CHAPTER12iapmo.org/UPC Report On Comments/2012 Uniform... ·...

1201.0 Scope of Gas Piping.1201.1 (A) Coverage of Piping System. Coverageof piping systems shall extend from the point of deliv-ery to the appliance connections with each gas utiliza-tion device. For other than undiluted liquefied petroleumgas systems, the point of delivery shall be considered theoutlet of the service meter assembly, or the outlet of theservice regulator or service shutoff valve where no meteris provided. For undiluted liquefied petroleum gas sys-tems, the point of delivery shall be considered the outletof the final pressure regulator, exclusive of the line gas reg-ulators, in the system where no meter is installed. Wherea meter is installed the point of delivery shall be the out-let of the meter. [NFPA54-12:1.1.1.1(A)]1201.2 (B) Piping System Requirements. Pipingsystems requirements shall include design, materials,components, fabrications, assembly, installation, testing,inspection, operation, and maintenance. [NFPA54:1.1.1.1(C)]1201.3 (C) Application. This code shall not apply tothe following (reference standards for some of which ap-pear in Chapter 14 [NFPA 54-12:1.1.1.2]:(1) Portable LP-Gas appliances of all types that are not

connected to a fixed fuel piping system.(2) Installation of farm appliances and equipment such

as brooders, dehydrators, dryers, and irrigationequipment used for agricultural purposes.

(3) Raw material (feedstock) applications, except forpiping to special atmosphere generators.

(4) Oxygen-fuel gas cutting and welding systems.(5) Industrial gas applications using gases such as acety-

lene and acetylenic compounds, hydrogen, ammo-nia, carbon monoxide, oxygen, and nitrogen.

(6) Petroleum refineries, pipeline compressor or pump-ing stations, loading terminals, compounding plants,refinery tank farms, and natural gas processingplants.

(7) Large integrated chemical plants or portions of suchplants where flammable or combustible liquids orgases are produced by chemical reactions or used inchemical reactions.

(8) LP-Gas installations at utility gas plants.(9) Liquefied natural gas (LNG) installations.(10)Fuel gas piping in electric utility power plants.

[NFPA 54-09:1.1.1.2(10)](11) Proprietary items of equipment, apparatus, or in-

struments such as gas-generating sets, compressors,and calorimeters.

(12) LP-Gas appliances for vaporization, gas mixing, andgas manufacturing.

(13) LP-Gas piping for buildings under construction orrenovations that are not to become part of the per-manent building piping system—that is, temporaryfixed piping for building heat.

(14) Installation of LP-Gas systems for railroad switchheating.

(15) Installation of LP-Gas and compressed natural gassystems on vehicles.

(16) Gas piping, meters, gas-pressure regulators, and otherappurtenances used by the serving gas supplier in dis-tribution of gas, other than undiluted LP-Gas.

1202.0 General.The regulations of this chapter shall govern the installationof fuel gas piping in or in connection with any a building,structure or within the property lines of any premises up tofive (5) psi (34.5 kPa), other than service pipe. Fuel oil pip-ing systems shall be installed in accordance with NFPA 31.

1203.0 Definitions.For the purposes of this code, these definitions shall apply tothis chapter. Certain terms, phrases, words, and their deriva-tives shall be interpreted as set forth in this section, provided,however, that whenever the words “gas meters” appear, theyshall be construed to also mean valves and those devices re-quired for the regulation of pressure and the measurement ofnatural gas being dispensed for any building, structure, orpremises.1203.1 Appliance Fuel Connector – An assembly oflisted semi-rigid or flexible tubing and fittings to carry fuelbetween a fuel-piping outlet and a fuel-burning appliance.1203.2 Bonding Jumper –A reliable conductor to ensurethe required electrical conductivity between metal parts re-quired to be electrically connected. [NFPA 70:100.1]1203.3 Fuel Gas – Natural, manufactured, liquefied petro-leum, or a mixture of these.1203.4 Gas Piping – Any installation of pipe, valves, orfittings that is used to convey fuel gas, installed on any prem-ises or in any building, but shall not include:(1) Any portion of the service piping.(2) Any approved piping connection six (6) feet (1,829 mm)

or less in length between an existing gas outlet and a gasappliance in the same room with the outlet.

1203.5 Gas-Piping System –Any arrangement of gas pip-ing or regulators after the point of delivery and each arrange-ment of gas piping serving a building, structure, or premises,whether individually metered or not.1203.6 Grounding Electrode – A device that establishesan electrical connection to the earth.

CHAPTER 12FUEL PIPING

UNIFORM PLUMBING CODE 171

UNIFORM PLUMBING CODE172

1203.7 Liquefied Petroleum Gas (LPG) Facilities –Liquefied petroleum gas (LPG) facilities means tanks, con-tainers, container valves, regulating equipment, meters,and/or appurtenances for the storage and supply of liquefiedpetroleum gas for any building, structure, or premises.1203.8 Provision for Location of Point of Delivery –The location of the point of delivery shall be acceptable tothe serving gas supplier. [NFPA 54:5.2]1203.9 Quick-Disconnect Device –Ahand-operated de-vice that provides a means for connecting and disconnectingan appliance or an appliance connector to a gas supply andthat is equipped with an automatic means to shut off the gassupply when the device is disconnected.1203.10 Service Piping – The piping and equipment be-tween the street gas main and the gas piping system inlet thatis installed by, and is under the control and maintenance of,the serving gas supplier.1203.11 Transition Gas Riser – Any listed or approvedsection or sections of pipe and fittings used to convey fuelgas and installed in a gas piping system for the purpose ofproviding a transition from below ground to above ground.

12043.0 Inspection.12043.1 Inspection Notification.Upon completion of theinstallation, alteration, or repair of any gas piping, and priorto the use thereof, the Authority Having Jurisdiction shall benotified that such gas piping is ready for inspection.12043.2 Excavation. All eExcavations required for the in-stallation of underground piping shall be kept open until suchtime as the piping has been inspected and approved. If anyWhere such piping is covered or concealed before such ap-proval, it shall be exposed upon the direction of the Author-ity Having Jurisdiction.12043.3 Type of Inspections. The Authority Having Ju-risdiction shall make the following inspections and eithershall approve that portion of the work as completed or shallnotify the permit holder wherein the same fails to comply bein accordance with this code.

12043.3.1 Rough Piping Inspection. This inspec-tion shall be made after all gas piping authorized by thepermit has been installed and before any such piping hasbeen covered or concealed or any fixture or appliancehas been attached thereto. This inspection shall include adetermination that the gas-piping size, material, and in-stallation meet the requirements of this code.12043.3.2 Final Piping Inspection. This inspectionshall be made after all piping authorized by the permithas been installed and after all portions thereof that are tobe covered or concealed are so concealed and before anyfixtures, appliance, or shutoff valve has been attachedthereto. This inspection shall be in accordance with Sec-tion 12143.1. Test gauges used in conducting tests shallcomply be in accordance with Section 319.0, TestGauges.

12043.4 Inspection Waived In cases where the work au-thorized by the permit consists of a minor installation of ad-ditional piping to piping already connected to a gas meter, the

foregoing inspections shall be permitted to be waived at thediscretion of theAuthority Having Jurisdiction. In this event,theAuthority Having Jurisdiction shall make such inspectionas deemed advisable in order to be assured that the work hasbeen performed in accordance with the intent of this code.

12054.0 Certificate of Inspection.12054.1 Issuance. If, Where upon final piping inspection,the installation is found to comply be in accordance with theprovisions of this code, a certificate of inspection shall be per-mitted to be issued by the Authority Having Jurisdiction.12054.2 Gas Supplier. A copy of the certificate of suchfinal piping inspection shall be issued to the serving gas sup-plier supplying gas to the premises.12054.3 Unlawful. It shall be unlawful for any a servinggas supplier, or person furnishing gas, to turn on or cause tobe turned on, any a fuel gas or any a gas meter or meters, untilsuch certificate of final inspection, as herein provided, hasbeen issued.

12065.0 Authority to Render Gas Service.12065.1 Authorized Personnel. It shall be unlawful forany a person, firm, or corporation, excepting an authorizedagent or employee of a person, firm, or corporation engagedin the business of furnishing or supplying gas and whose serv-ice pipes supply or connect with the particular premises, toturn on or reconnect gas service in or on any a premises whereand when gas service is, at the time, not being rendered.12065.2 Outlets. It shall be unlawful to turn on or connectgas in or on any a premises unless all outlets are properly andsecurely connected to gas appliances or capped or pluggedwith screw joint fittings.

12076.0 Authority to Disconnect.12076.1 Disconnection. The Authority Having Jurisdic-tion or the serving gas supplier is hereby authorized to dis-connect any gas piping or appliance or both that shall befound not to conform to comply the requirements of this codeor that are found defective and in such condition as to en-danger life or property.12076.2 Notice.Where such disconnection has been made,a notice shall be attached to such gas piping or appliance orboth that shall state the same has been disconnected, togetherwith the reasons thereof.12076.3 Capped Outlets. It shall be unlawful to removeor disconnect any gas piping or gas appliance without cap-ping or plugging with a screw joint fitting, the outlet fromwhich said pipe or appliance was removed. Outlets to whichgas appliances are not connected shall be left capped, gas-tight on any a piping system that has been installed, altered,or repaired.Exception: When Where an approved listed quick- discon-nect device is used.

FUEL PIPING

12087.0 Temporary Use of Gas.1207.1 General.Where temporary use of gas is desired andtheAuthority Having Jurisdiction deems the use necessary, apermit shall be permitted to be issued for such use for a pe-riod of time not to exceed that designated by the AuthorityHaving Jurisdiction, provided that such gas-piping systemotherwise conforms to is in accordance with the requirementsof this code regarding material, sizing, and safety.

12098.0 Gas-Piping System Design, Materials, andComponents.12098.1 Piping Plan.

12098.1.1 Installation of Piping System. Whererequired by the Authority Having Jurisdiction, a pipingsketch or plan shall be prepared before proceeding withthe installation. This plan shall show the proposed loca-tion of piping, the size of different branches, the variousload demands, and the location of the point of delivery.[NFPA 54:5.1.1]12098.1.2 Addition to Existing System. WhenWhere an additional gas utilization appliance is being con-nected to a gas-piping system, the existing piping shall bechecked to determine whether it has adequate capacity (seeSection 1209.4.3). If Where inadequate, the existing sys-tem shall be enlarged as required, or separate gas piping ofadequate capacity shall be provided. [NFPA 54:5.1.2]

12098.2 Provision for Location of Point of Delivery.The location of the point of delivery shall be acceptable tothe serving gas supplier. [NFPA 54:5.2]12098.3 Interconnections Between Gas-Piping Sys-tems. [NFPA 54:5.3]

12098.3.1 Interconnections Supplying SeparateUsers.Where two (2) or more meters, or two (2) or moreservice regulators where meters are not provided, are lo-cated on the same premises and supply separate users, thegas-piping systems shall not be interconnected on the out-let side of themeters or service regulators. [NFPA54:5.3.1]12098.3.2 Interconnections for Standby Fuels.Where a supplementary gas for standby use is connecteddownstream from a meter or a service regulator where ameter is not provided, a device to prevent backflow shallbe installed. A three-way valve installed to admit thestandby supply and, at the same time, shut off the regu-lar supply, shall be permitted to be used for this purpose.[NFPA 54:5.3.2]

12098.4 Sizing of Gas-Piping Systems. [NFPA 54:5.4]12098.4.1 General Considerations. Gas-piping sys-tems shall be of such size and so installed as to providea supply of gas sufficient to meet the maximum demandand supply gas to each appliance inlet at not less than theminimum supply pressure required by the appliance.[NFPA 54-09:5.4.1]12098.4.2 MaximumGas Demand. The volume vol-umetric flow rate of gas to be provided (in cubic feet perhour) shall be determined directly from calculated usingthe manufacturer's input ratings of the gas utilization ap-pliance served. Where the input rating is not indicated,

the gas supplier, appliance manufacturer, or a qualifiedagency shall be contacted or the rating from Table 12-11208.4.2 shall be used for estimating the volume volu-metric flow rate of gas to be supplied. The total con-nected hourly load shall be used as the basis for pipingsizing, assuming the appliance is operating at full capac-ity simultaneously. [NFPA 54-12:5.4.2]Exception: Sizing shall be permitted to be based uponestablished load diversity factors. [NFPA 54:5.4.2.2]


FUEL PIPING

APPLIANCEINPUT Btu/h.(Approx.)

Space Heating UnitsWarm air furnaceSingle familyMultifamily, per unitHydronic boilerSingle familyMultifamily, per unit

100,00060,000

100,00060,000

Space-and Water-Heating UnitsHydronic boilerSingle familyMultifamily, per unit

120,00075,000

Water-Heating AppliancesWater heater, automatic storage30 to 40 gal. tankWater heater, automatic storage50 gal. tankWater heater, automatic instantaneousCapacity at 2 gal./minuteCapacity at 4 gal./minuteCapacity at 6 gal./minuteWater heater, domestic, circulating orside-arm

35,000

50,000

142,800285,000428,400

35,000Cooking AppliancesRange, freestanding, domesticBuilt-in oven or broiler unit, domesticBuilt-in top unit, domestic

65,00025,00040,000

OtherAppliancesRefrigeratorClothes dryer, Type 1 (domestic)Gas fireplace direct ventGas logBarbecueGaslight

3,00035,00040,00080,00040,0002,500

TABLE 12-1 1208.4.2APPROXIMATE GAS INPUT FOR

TYPICAL APPLIANCES[NFPA 54: TABLE 5.4.2.1]

For SI units: 1 Btu 1000 British thermal units per hour = 0.293 kW


12098.4.3 Sizing Methods.Gas piping shall be sizedin accordance with one of the following :(1) Pipe sizing tables or sizing equations in this chap-

ter.(2) Other approved engineering methods acceptable to

the Authority Having Jurisdiction.(3) Sizing tables included in a listed piping system man-

ufacturer's installation instructions. [NFPA54:5.4.3]12098.4.4 Allowable Pressure Drop. The designpressure loss in any a piping system under maximumprobable flow conditions, from the point of delivery tothe inlet connection of the appliance, shall be such thatthe supply pressure at the appliance exceeds is greaterthan or is equal to the minimum pressure required by theappliance. [NFPA 54-09:5.4.4]

12098.5 Acceptable Piping Materials and JoiningMethods.

12098.5.1 General.12098.5.1.1 Acceptable Materials. Materialsused for piping systems shall comply with the re-quirements of this chapter or shall be acceptable tothe Authority Having Jurisdiction. [NFPA54:5.6.1.1]12098.5.1.2 Used Materials. Pipe, fittings,valves, or other materials shall not be used again un-less they are free of foreign materials and have beenascertained to be adequate approved for the serviceintended. [NFPA 54:5.6.1.2]12098.5.1.3 Other Materials. Material not cov-ered by the standards specifications listed hereinshall be investigated and tested to determine that itis safe and suitable for the proposed service and, inaddition, shall be recommended for that service bythe manufacturer and shall be acceptable to the Au-thority Having Jurisdiction. [NFPA 54:5.6.1.3]

12098.5.2 Metallic Pipe.12098.5.2.1 Cast-Iron. Cast-iron pipe shall not beused. [NFPA 54:5.6.2.1]12098.5.2.2 Steel and Wrought-Iron. Steel andwrought-iron pipe shall be not less than standardweight (Schedule 40) and shall comply with one ofthe following standards(1) ASME B36.10,Welded and Seamless Wrought-

Steel Pipe.(2) ASTM A 53, Standard Specification for Pipe,

Steel, Black and Hot-Dipped, Zinc-CoatedWelded and Seamless.

(3) ASTMA106, Standard Specification for Seam-less Carbon Steel Pipe for High-TemperatureService [NFPA 54:5.6.2.2]:.

12098.5.2.3 Copper and Brass. Copper andbrass pipe shall not be used if the gas contains morethan an average of 0.3 grains of hydrogen sulfide perone-hundred (100) standard cubic feet (scf) of gas(0.7 mg/100 L). [NFPA 54:5.6.2.3]

Threaded copper, brass, or aluminum alloy pipeshall not be used with gases corrosive to such mate-rial. [NFPA 54:5.6.2.4]12098.5.2.4 Aluminum Alloy. Aluminum alloypipe shall comply with ASTM B 241, StandardSpecification for Aluminum-Alloy Seamless Pipeand Seamless Extruded Tube (except that the use ofalloy 5456 is prohibited) and shall be marked at eachend of each length indicating compliance. Alu-minum alloy pipe shall be coated to protect againstexternal corrosion where it is in contact with ma-sonry, plaster, insulation or is subject to repeatedwettings by such liquids as water, detergents, orsewage. [NFPA 54:5.6.2.5] Aluminum alloy pipeshall not be used in exterior locations or under-ground. [NFPA 54:5.6.2.6]

12098.5.3 Metallic Tubing. Seamless copper, alu-minum alloy, or steel tubing shall not be used with gasescorrosive to such material. [NFPA 54:5.6.3]

12098.5.3.1 Steel. Steel tubing shall comply withASTM A 254, Standard Specification for CopperBrazed Steel Tubing. [NFPA 54-09:5.6.3.1]12098.5.3.2 Copper and Brass. Copper andbrass tubing shall not be used if where the gas con-tains more than an average of 0.3 grains of hydrogensulfide per one-hundred (100) scf of gas (0.7 mg/100L). Copper tubing shall comply with standard TypeK or L of ASTM B 88, Standard Specification forSeamless Copper Water Tube, or ASTM B 280,Specification for Seamless Copper Tube for Air-Conditioning and Refrigeration Field Service.[NFPA 54:5.6.3.2]12098.5.3.3 Aluminum Alloy. Aluminum alloytubing shall comply with ASTM B 210, StandardSpecification for Aluminum-Alloy Drawn SeamlessTubes, or ASTM B 241, Standard Specification forAluminum Alloy Seamless Pipe and Seamless Ex-truded Tube.Aluminum alloy tubing shall be coated toprotect against external corrosionwhere it is in contactwith masonry, plaster, insulation or is subject to re-peated wettings by liquids such as water, detergent, orsewage. Aluminum alloy tubing shall not be used inexterior locations or underground. [NFPA54:5.6.3.3]12098.5.3.4 Corrugated Stainless Steel. Cor-rugated stainless steel tubing shall be tested andlisted in compliance accordance with the construc-tion, installation, and performance requirements ofCSA LC-1, Standard for Fuel Gas Piping SystemsUsing Corrugated Stainless Steel Tubing. [NFPA54:5.6.3.4]

12098.5.4 Plastic Pipe, Tubing, and Fittings. Plas-tic pipe, tubing, and fittings used to supply fuel gas shallconform be in accordance withASTMD 2513, StandardSpecification for Thermoplastic Gas Pressure Pipe, Tub-ing, and Fittings. Pipe to be used shall be marked "gas"and "ASTM D 2513.” [NFPA 54:5.6.4.1]

Anodeless risers shall comply with the followingsections. [NFPA 54:5.6.4.3]:

FUEL PIPING

12098.5.4.1 Regulator Vent Piping. Plasticpipe, tubing, and fittings used to connect regulatorvents to remote vent terminations shall be PVC con-forming to in accordance withANSI/UL 651, Sched-ule 40 and 80 Rigid PVC Conduit and Fittings. PVCvent piping shall not be installed indoors. [NFPA54-1209:5.6.4.2]12098.5.4.2 Factory-Assembled AnodelessRisers. Factory-assembled anodeless risers shall berecommended by the manufacturer for the gas usedand shall be leak-tested by the manufacturer in ac-cordance with written procedures. [NFPA54:5.6.4.3(1)]12098.5.4.3 Service Head Adapters andField-Assembled Anodeless Risers. Servicehead adapters and field-assembled anodeless risersincorporating service head adapters shall be recom-mended by the manufacturer for the gas used by themanufacturer and shall be design-certified to meetbe in accordance with the requirements of CategoryI of ASTM D 2513, Standard Specification for Ther-mostatic Gas Pressure Pipe, Tubing, and Fittings andthe code of Federal Regulations, Title 49, Part192.281(e). The manufacturer shall provide the userwith qualified installation instructions. as prescribedby the code of Federal Regulations, Title 49, Part192.283(b). [NFPA 54:5.6.4.3(2)]12098.5.4.4 Undiluted Liquefied PetroleumGas Piping. The use of plastic pipe, tubing, and fit-tings in undiluted liquefied petroleum gas-piping sys-tems shall be in accordance comply with NFPA 58,Liquefied Petroleum Gas Code. [NFPA54:5.6.4.3(3)]

12098.5.5 Workmanship and Defects. Gas pipe ortubing and fittings shall be clear and free from cuttingburrs and defects in structure or threading, and shall bethoroughly brushed and chip and scale blown. Defects inpipe, tubing, and fittings shall not be repaired. Defectivepipe, tubing, and fittings shall be replaced. [NFPA54:5.6.5]12098.5.6 Protective Coating.Where in contact withmaterial or atmosphere exerting a corrosive action,metallic piping and fittings coated with a corrosion-re-sistant material shall be used. External or internal coat-ings or linings used on piping or components shall notbe considered as adding strength. [NFPA 54:5.6.6]12098.5.7 Metallic Pipe Threads.

1208.5.7.1 (A) Specifications for PipeThreads.Metallic pipe and fitting threads shall betaper pipe threads and shall comply with ASMEB1.20.1, Standard for Pipe Threads, General Pur-pose (Inch). [NFPA 54:5.6.7.1]1208.5.7.2 (B) Damaged Threads. Pipe withthreads that are stripped, chipped, corroded, or oth-erwise damaged shall not be used. Where a weldopens during the operation of cutting or threading,that portion of the pipe shall not be used. [NFPA54:5.6.7.2]

1208.5.7.3 (C) Number of Threads. Fieldthreading of metallic pipe shall be in accordancecomply with Table 12-2 1208.5.7.3. [NFPA54:5.6.7.3]

1208.5.7.4 (D) Thread Joint Compounds.Thread (joint) compounds (pipe dope) shall be re-sistant to the action of liquefied petroleum gas or toany other chemical constituents of the gases to beconducted through the piping. [NFPA54-12:5.6.7.4]

12098.5.8 Metallic Piping Joints and Fittings. Thetype of piping joint used shall be suitable approved forthe pressure-temperature conditions and shall be selectedgiving consideration to joint tightness and mechanicalstrength under the service conditions. The joint shall beable to sustain the maximum end force due to the inter-nal pressure and any additional forces due to tempera-ture expansion or contraction, vibration, fatigue, or to theweight of the pipe and its contents. [NFPA 54:5.6.8]

12098.5.8.1 Pipe Joints. Pipe joints shall bethreaded, flanged, brazed, or welded. Where non-ferrous pipe is brazed, the brazing materials shallhave a melting point in excess of 1,000°F (538°C).Brazing alloys shall not contain more than 0.05 per-cent phosphorus. [NFPA 54:5.6.8.1]12098.5.8.2 Tubing Joints. Tubing joints shalleither be made with approved gas tubing fittings, bebrazed with a material having a melting point in ex-cess of 1,000°F (538°C), or made by press-connectfittings complying in accordance with CSA ANSILC-4. Brazing alloys shall not contain more than0.05 percent phosphorus. [NFPA 54:5.6.8.2]12098.5.8.3 Flared Joints. Flared joints shall beused only in systems constructed from nonferrouspipe and tubing where experience or tests havedemonstrated that the joint is suitable approved forthe conditions and where provisions are made in thedesign to prevent separation of the joints. [NFPA54:5.6.8.3]


FUEL PIPING

NOMINAL IRONPIPE SIZE(inches)

APPROXIMATE LENGTH OFTHREADED PORTION

(inches)APPROXIMATE NO. OFTHREADS TO BE CUT

1⁄2 3⁄4 103⁄4 3⁄4 101 7⁄8 1011⁄4 1 1111⁄2 1 112 1 1121⁄2 11⁄2 123 11⁄2 124 15⁄8 13

TABLE 12-2 1208.5.7.3SPECIFICATIONS FOR THREADING METALLIC PIPE

[NFPA 54: TABLE 5.6.7.3]

For SI units, 1 inch = 25.4 mm


12098.5.8.4 Metallic Fittings (IncludingValves, Strainers, Filters).Metallic fittings shallcomply with the following:(1) Threaded fittings in sizes exceeding four (4)

inches (100 mm) shall not be used unless ac-ceptable to the Authority Having Jurisdiction.

(2) Fittings used with steel or wrought-iron pipeshall be steel, brass, bronze, malleable iron, orcast-iron.

(3) Fittings used with copper or brass pipe shall becopper, brass, or bronze.

(4) Fittings used with aluminum alloy pipe shall beof aluminum alloy.

(5) Cast-Iron Fittings.(a) Flanges shall be permitted.(b) Bushings shall not be used.(c) Fittings shall not be used in systems con-

taining flammable gas-air mixtures.(d) Fittings in sizes four (4) inches (100 mm)

and larger shall not be used indoors unlessapproved by the Authority Having Juris-diction.

(e) Fittings in sizes six (6) inches (150 mm)and larger shall not be used unless ap-proved by the Authority Having Jurisdic-tion.

(6) Aluminum Alloy Fittings. Threads shall notform the joint seal.

(7) Zinc-Aluminum Alloy Fittings. Fittings shallnot be used in systems containing flammablegas-air mixtures.

(8) Special Fittings. Fittings such as couplings; pro-prietary-type joints; saddle tees; gland-typecompression fittings; and flared, flareless, orcompression-type tubing fittings shall be:(1a) uUsed within the fitting manufacturers'

pressure-temperature recommendations;.(2b) uUsed within the service conditions antic-

ipated with respect to vibration, fatigue,thermal expansion, or contraction;.

(3c) iInstalled or braced to prevent separationof the joint by gas pressure or externalphysical damage;. and

(4d) aAcceptable to the Authority Having Ju-risdiction. [NFPA 54:5.6.8.4]

12098.5.9 Plastic Piping, Joints, and Fittings.Plastic pipe, tubing, and fittings shall be joined in accor-dance with the manufacturers' instructions. The follow-ing sections shall be observed when where making suchjoints. [NFPA 54:5.6.9]:

1208.5.9.1 Joint Design (A) The joint shall bedesigned and installed so that the longitudinal pull-out resistance of the joint shall be equal to the ten-sile strength of the plastic piping material. [NFPA54:5.6.9(1)]

1208.5.9.2 Heat-Fusion Joint (B) Heat-fusionjoints shall be made in accordance with AWS B2.4Specification for Welding Procedure and Perform-ance Qualification for Thermoplastics. Joints shallbe made with the joining method recommended bythe pipe manufacturer. Heat-fusion fittings shall bemarked "ASTM D 2513." [NFPA 54:5.6.9(2)]1208.5.9.3 Compression Type MechanicalJoints. (C) Where compression-type mechanicaljoints are used, the gasket material in the fitting shallbe compatible with the plastic piping and with thegas distributed by the system. An internal tubularrigid stiffener shall be used in conjunction with thefitting. The stiffener shall be flush with the end ofthe pipe or tubing, shall extend not less than the out-side end of the pipe or tubing and shall extend notless than to the outside end of the compression fit-ting when where installed. The stiffener shall be freeof rough or sharp edges and shall not be a forced fitin the plastic. Split tubular stiffeners shall not beused. [NFPA 54:5.6.9(3)]1208.5.9.4 (D) Liquefied Petroleum Gas Pip-ing Systems. Plastic piping joints and fittings foruse in liquefied petroleum gas-piping systems shallbe in accordance with NFPA 58, Liquefied Petro-leum Gas Code. [NFPA 54:5.6.9(4)]

12098.5.10 Flanges. Flanges shall comply withASME B16.1, Standard for Cast-Iron Pipe Flanges andFlanged Fittings; ASME B16.20, Standard for Ring-Joint Gaskets and Grooves for Steel Pipe Flanges; orMSS SP-6, Standard Finishes for Contact Faces of PipeFlanges and Connecting-End Flanges of Valves and Fit-tings. The pressure-temperature ratings shall equal or ex-ceed that required by the application. [NFPA 54:5.6.10]

1208.5.10.1 (A) Flange Facings. Standard fac-ings shall be permitted for use under this code.Where one-hundred and fifty (150) psi (1,090 1034kPa) steel flanges are bolted to Class 125 cast-ironflanges, the raised face on the steel flange shall beremoved. [NFPA54:5.6.10.1]1208.5.10.2 (B) Lapped Flanges.Lapped flangesshall be used only above ground or in exposed loca-tions accessible for inspection. [NFPA54:5.6.10.2]

12098.5.11 Flange Gaskets. The material for gasketsshall be capable of withstanding the design temperatureand pressure of the piping system and the chemical con-stituents of the gas being conducted without change toits chemical and physical properties. The effects of fireexposure to the joint shall be considered in choosing thematerial. [NFPA 54:5.6.11] Flange gaskets shall complywith the following requirements:(1) Acceptable materials include the following [NFPA

54-12:5.6.11.1]:(a) Metal or metal-jacketed asbestos (plain or corru-

gated).(b) Asbestos Composition.(c) Aluminum "O" rings and spiral-wound metal

gaskets.

FUEL PIPING

(2) When Where a flanged joint is opened, the gasketshall be replaced. [NFPA54:5.6.11.2]

(3) Full-face gaskets shall be used with all bronze andcast-iron flanges. [NFPA 54:5.6.11.3]

12098.6 Gas Meters.12098.6.1 Capacity. Gas meters shall be selected forthe maximum expected pressure and permissible pres-sure drop. [NFPA54:5.7.1]12098.6.2 Location.

1208.6.2.1 Ventilated Spaces. (A) Gas metersshall be located in ventilated spaces readily accessi-ble for examination, reading, replacement, or neces-sary maintenance. [NFPA 54:5.7.2.1]1208.6.2.2 Subject to Damage. (B) Gas metersshall not be placed where they will be subjected todamage, such as adjacent to a driveway; under a fireescape; in public passages, halls, or coal bins; orwhere they will be subject to excessive corrosion orvibration. [NFPA54:5.7.2.2]1208.6.2.3 Extreme Temperatures. (C) Gasmeters shall not be located where they will be sub-jected to extreme temperatures or sudden extremechanges in temperature. Meters shall not be locatedin areas where they are subjected to temperatures be-yond those recommended by the manufacturer.[NFPA 54:5.7.2.4]

12098.6.3 Supports. Gas meters shall be supported orconnected to rigid piping so as not to exert a strain on themeters. Where flexible connectors are used to connect agas meter to downstream piping at mobile homes in mo-bile home parks, the meter shall be supported by a post orbracket placed in a firm footing or by other means pro-viding equivalent support. [NFPA 54:5.7.3]12098.6.4 Meter Protection.Meters shall be protectedagainst overpressure, back-pressure, and vacuum wheresuch conditions are anticipated. [NFPA 54-12:5.7.4]12098.6.5 Identification. Gas piping at multiple meterinstallations shall be marked by a metal tag or other per-manent means attached by the installing agency, desig-nating the building or the part of the building beingsupplied. [NFPA 54:5.7.5]

12098.7 Gas Pressure Regulators.12098.7.1 Where Required. A line gas pressure reg-ulator or gas appliance pressure regulator, as applicable,shall be installed where the gas supply pressure exceedsthat at which the branch supply line or gas utilization ap-pliance is designed to operate or varies beyond designpressure limits. [NFPA 54-12:5.8.1]

1208.7.1.1Where the gas supply pressure in pipingsystems located indoors exceeds 2 psi (14 kPa) andline pressure regulators are installed to reduce thesupply pressure to 14 inches water column (3.5 kPa)or less, the following shall apply:(1) Regulators shall be provided with factory in-

stalled overpressure protection devices.

(2) Overpressure protection devices shall limit thepressure downstream of the line pressure regu-lator to 2 psi (14 kPa) in the event of failure ofthe line pressure regulator.

12098.7.2 Listing. The line gas pressure regulator shallbe listed in accordance with CSA Z21.80. [NFPA54:5.8.2]12098.7.3 Location. The gas pressure regulator shallbe accessible for servicing. [NFPA 54:5.8.3]12098.7.4 Regulator Protection. Pressure regulatorsshall be protected against physical damage. [NFPA54:5.8.4]12098.7.5 Venting.

1208.7.5.1 (A) Line Gas Pressure Regula-tors. Line gas pressure regulators shall be installedin accordance with the following requirements:(1) An independent vent to the outside exterior of

the building, sized in accordance with the regu-lator manufacturer's instructions, shall be pro-vided where the location of a regulator is suchthat a ruptured diaphragm will cause a hazard.Where there is more than one (1) regulator is ata location, each regulator shall have a separatevent to the outside outdoors, or, if where ap-proved by the Authority Having Jurisdiction,the vent lines shall be permitted to be mani-folded in accordance with accepted engineeringpractices to minimize back-pressure in the eventof diaphragm failure. (See NFPA 54:5.9.7 forinformation on properly locating the vent.) Ma-terials for vent piping shall be in accordancecomply with Section 12098.5.Exception:Aregulator and vent limiting meanscombination listed as complying in accordancewith CSAZ21.80, Standard for Line Pressure Reg-ulators, shall be permitted to be used without avent to the outdoors.

(2) The vent shall be designed to prevent the entryof water, insects, or other foreign materials thatcould cause blockage.

(3) The regulator vent shall terminate not less than3 feet (914 mm) from a source of ignition.

(34)At locations where regulators might be will sub-merged during floods, a special antiflood-typebreather vent fitting shall be installed, or thevent line shall be extended above the height ofthe expected flood waters.

(45)A regulator shall not be vented to the gas appli-ance flue or exhaust system. [NFPA54:5.8.5.1]

1208.7.5.2 (B) Venting of Gas AppliancePressure Regulators. Venting of gas appliancepressure regulators shall comply with the followingrequirements:(1) Gas aAppliance pressure regulators requiring

access to the atmosphere for successful opera-tion shall be equipped with vent piping leading


FUEL PIPING


outdoors, or, if where the regulator vent is anintegral part of the appliance, into the combus-tion chamber adjacent to a continuous pilot, un-less constructed or equipped with avent-limiting means to limit the escape of gasfrom the vent opening in the event of diaphragmfailure.

(2) Vent-limiting means shall be employed on listedgas appliance pressure regulators only.

(3) In the case of vents leading outdoors, means shallbe employed to prevent water from entering thispiping and also to prevent blockage of vents byinsects and foreign matter.

(4) Under no circumstances shall a regulator bevented to the gas utilization appliance flue orexhaust system.

(5) In the case of vents entering the combustionchamber, the vent shall be located so the escap-ing gas will be readily ignited by the pilot andthe heat liberated thereby will not adversely af-fect the normal operation of the safety shutoffsystem. The terminus of the vent shall be se-curely held in a fixed position relative to thepilot. For manufactured gas, the need for aflame arrester in the vent piping shall be deter-mined.

(6) Vent lines from a gas appliance pressure regu-lator and bleed lines from a diaphragm-typevalve shall not be connected to a common man-ifold terminating in a combustion chamber. Ventlines shall not terminate in positive-pressure-type combustion chambers. [NFPA 54:9.1.19]

1208.7.5.3 (C) Discharge of Vents. Dischargeof vents shall be in accordance with the followingrequirements:(1) The discharge stacks, vents, or outlet parts of all

pressure-relieving and pressure-limiting devicesshall be located so that gas is safely dischargedinto the outside atmosphere outdoors.

(2) Discharge stacks or vents shall be designed toprevent the entry of water, insects, or any otherforeign material that could cause blockage. Thedischarge stack or vent line shall be not less thanthe same size as the outlet of the pressure-re-lieving device. [NFPA 54:5.9.7]

12098.7.6 Bypass Piping. Valved and regulated by-passes shall be permitted to be placed around gas linepressure regulators where continuity of service is imper-ative. [NFPA 54:5.8.6]12098.7.7 Identification. Line pressure regulators atmultiple regulator installations shall be marked by ametal tag or other permanent means designating thebuilding or the part of the building being supplied.[NFPA 54:5.8.7]

12098.8 Back-Pressure Protection.12098.8.1 Where to Install. Protective devices shallbe installed as close to the utilization appliance as prac-

tical, where the design of utilization appliances con-nected are such that air, oxygen, or standby gases couldbe are capable of being forced into the gas supply sys-tem. [NFPA 54:5.10.1.1] Gas and air combustion mixersincorporating double diaphragm "zero" or "atmosphere"governors or regulators shall require no further protectionunless connected directly to compressed air or oxygen atpressures of five (5) psi (34 kPa) or more. [NFPA54:5.10.1.2]12098.8.2 Protective Devices. Protective devicesshall include but not be limited to the following:(1) Check valves.(2) Three-way valves (of the type that completely closes

one side before starting to open the other side).(3) Reverse flow indicators controlling positive shutoff

valves.(4) Normally closed air-actuated positive shutoff pres-

sure regulators. [NFPA 54:5.10.2]12098.9 Low-Pressure Protection. A protective deviceshall be installed between the meter and the gas utilizationappliance or equipment if where the operation of the appli-ance or equipment (i.e., gas compressors) is such that it couldproduce is capable of producing a vacuum or a dangerous re-duction in gas pressure at the meter. Such protective devicesinclude, but are not limited to, mechanical, diaphragm-oper-ated, or electrically operated low-pressure shutoff valves.[NFPA 54-12:5.11]12098.10 Shutoff Valves. Shutoff valves shall be approvedand shall be selected giving consideration to pressure drop,service involved, emergency use, and reliability of operation.Shutoff valves of size one (1) inch (25 mm) National PipeThread and smaller shall be listed. [NFPA 54:5.12]12098.11 Expansion and Flexibility.

12098.11.1 Design. Piping systems shall be designedto have sufficient flexibility to prevent failure from ther-mal expansion or contraction. from causing excessivestresses in the piping material, excessive bending orloads at joints, or undesirable forces or moments at pointsof connections to equipment and at anchorage or guidepoints. Formal calculations or model tests shall be re-quired only where reasonable doubt exists as to the ade-quate flexibility of the system. [NFPA 54-12:5.134.1]

Flexibility shall be provided by the use of bends,loops, offsets, or couplings of the slip type. Provisionshall be made to absorb thermal changes by the use ofexpansion joints of the bellows type, or by the use of"ball" or "swivel" joints. Expansion joints of the slip typeshall not be used inside buildings or for thermal expan-sion. Where expansion joints are used, anchors or ties ofsufficient strength and rigidity shall be installed to providefor end forces due to fluid pressure and other causes.[NFPA 54:5.13.1.1]

Pipe alignment guides shall be used with expansionjoints according to the recommended practice of the jointmanufacturer. [NFPA 54:5.13.1.2]

FUEL PIPING


12098.11.2 Special Local Conditions.Where localconditions include earthquake, tornado, unstable ground,or flood hazards, special consideration shall be given toincreased strength and flexibility of piping supports andconnections. [NFPA 54:5.13.2]

12109.0 Excess Flow Valve.1209.1 General. Where automatic excess flow gas valvesare installed, they shall be listed, sized, and installed in ac-cordance with the manufacturer’s instructions. [NFPA 54-09:5.13]

12110.0 Gas Piping Installation.12110.1 Piping Underground.

12110.1.1 Clearances. Underground gas piping shallbe installed with sufficient approved clearance from anyother underground structures to avoid contact therewith,to allow maintenance, and to protect against damagefrom proximity to other structures. In addition, under-ground plastic piping shall be installed with sufficientapproved clearance or shall be insulated from any asources of heat so as to prevent the heat from impairingthe serviceability of the pipe. [NFPA 54:7.1.1]12110.1.2 Protection Against Damage.

1210.1.2.1 (A) Cover Requirements. Under-ground piping systems shall be installed with a min-imum cover not less than of eighteen (18) inches (460457mm) of cover.Where external damage to the pipeis not likely to result, the cover shall be a minimumnot less than of twelve (12) inches (3005 mm).Where a minimum of cover not less than twelve (12)inches (3005 mm) of cover cannot be provided, thepipe shall be installed in conduit or bridged(shielded). [NFPA 54:7.1.2.1]1210.1.2.2 (B) Trenches. The trench shall begraded so that the pipe has a firm, substantially con-tinuous bearing on the bottom of the trench. [NFPA54:7.1.2.2]1210.1.2.3 (C) Backfilling.Where flooding of thetrench is done to consolidate the backfill, care shallbe exercised to see that the pipe is not floated from itsfirm bearing on the trench bottom. [NFPA54:7.1.2.3]

12110.1.3 Protection Against Corrosion.Gas pip-ing in contact with earth or other material that could cor-rode is capable of corroding the piping shall be protectedagainst corrosion in an approved manner. When Wheredissimilar metals are joined underground, an insulatingcoupling or fitting shall be used. Piping shall not be laidin contact with cinders. Uncoated threaded or socket-welded joints shall not be used in piping in contact withsoil or where internal or external crevice corrosion isknown to occur. [NFPA 54:7.1.3]12110.1.4 Protection Against Freezing.Where theformation of hydrates or ice is known to occur, pipingshall be protected against freezing. [NFPA 54:7.1.4]

12110.1.5 Piping Through FoundationWall.Under-ground piping, where installed through the outer foundationor basement wall of a building, shall be encased in a pro-tective sleeve or protected by an approved device ormethod. The space between the gas piping and the buildingor sleeve and between the sleeve and thewall shall be sealedto prevent entry of gas and water. [NFPA54-12:7.1.5]12110.1.6 PipingUndergroundBeneath Buildings.Where the installation of gas piping is installed under-ground beneath buildings is unavoidable, the piping shallbe either:(1) eEncased in an approved conduit designed to with-

stand the superimposed loads and installed in accor-dance with Section 1210.1.6.1 or Section 1210.1.6.2,or. [NFPA 54:7.1.6]

(2) Apiping or encasement system listed for installationbeneath buildings.12110.1.6.1 Conduit with One End Terminat-ing Outdoors. The conduit shall extend into a nor-mally usable and accessible portion of the buildingand, at the point where the conduit terminates in thebuilding, the space between the conduit and the gaspiping shall be sealed to prevent the possible entranceof any a gas leakage.Where the end sealing is of a typethat will retain the full pressure of the pipe, the conduitshall be designed for the same pressure as the pipe.The conduit shall extend not less than (4) inches (1002mm) outside the building, be vented outdoors abovefinished ground level grade to the outside, and be in-stalled so as to prevent the entrance of water and in-sects. [NFPA 54:7.1.6.1]12110.1.6.2 Conduit with Both Ends Termi-nating Indoors.Where the conduit originates andterminates within the same building, the conduitshall originate and terminate in an accessible por-tion of the building and shall not be sealed. [NFPA54:7.1.6.2]

12110.1.7 Plastic Pipe.1210.1.7.1 (A) Connection of Plastic Piping.Plastic pipe shall be installed outside, undergroundonly. [NFPA 54:7.1.7.1]Exceptions:(1) Exception No. 1: Plastic pipe shall be permit-

ted to terminate above ground where an anode-less riser is used.

(2) Exception No. 2: Plastic pipe shall be permittedto terminate with a wall head adapter aboveground in buildings, including basements, wherethe plastic pipe is inserted in a piping materialpermitted for use in buildings.

1210.1.7.2 (B) Connections Between Metallicand Plastic Piping. Connections made betweenmetallic and plastic piping shall be made only withfittings conforming to that are in accordance withone of the following:

FUEL PIPING


(1) ASTMD2513, Standard Specification for Ther-moplastic Gas Pressure Pipe, Tubing, and Fit-tings, Category I transition fittings.

(2) ASTM F1973, Standard Specification for Fac-tory Assembled Anodeless Risers and TransitionFittings in Polyethylene (PE) and Polyamide 11(PA11) Fuel Gas Distribution Systems.

(3) ASTM F2509, Standard Specification for Field-Assembled Anodeless Riser Kits for Use on Out-side Diameter Controlled Polyethylene GasDistribution Pipe and Tubing. [NFPA 54-09:7.1.7.2]

1210.1.7.3 (C) Tracer Wire.An electrically con-tinuous corrosion-resistant tracer wire (minimumnot less than AWG 14) or tape shall be buried withthe plastic pipe to facilitate locating. One (1) endshall be brought above ground at a building wall orriser. [NFPA 54:7.1.7.3]

12110.2 Installation of Piping.12110.2.1 Protection. Piping installed above groundshall be securely supported and located where it will beprotected from physical damage (also see 1211.1.4).Where passing through an outside wall, the piping shallalso be protected against corrosion by coating or wrap-ping with an inert material approved for such applica-tions. The piping shall be sealed around its circumferenceat the point of the exterior penetration to prevent theentry of water, insects, and rodents. Where piping is en-cased in a protective pipe sleeve, the annular spaces be-tween the gas piping and the sleeve and between thesleeve and the wall opening shall be sealed at the exteriorwall to prevent the entry of water, insects, or rodents.[NFPA 54-12:7.2.1]12110.2.2 Building Structure.

1210.2.2.1 Installation. (1) The installation of gaspiping shall not cause structural stresses withinbuilding components to exceed allowable designlimits. [NFPA 54:7.2.2.1]1210.2.2.2 Approval. (2) Approval shall be ob-tained before any beams or joists are cut or notched.[NFPA 54:7.2.2.2] Permission shall be obtainedfrom the Authority Having Jurisdiction.

1211.2.3 Other than Dry Gas. Drips, sloping, pro-tection from freezing, and branch pipe connections, asprovided for in Section 1211.1.4, 1211.8.1, and Section1211.10, shall be provided when other than dry gas isdistributed and climactic conditions make such provi-sions necessary. [NFPA 54:7.2.3]12110.2.43 Gas Piping to be Sloped. Piping forother than dry gas conditions shall be sloped not less thanone-fourth (1⁄4) inch in fifteen (15) feet (8 mm in 4,572mm) (1.4 mm/m) to prevent traps. [NFPA 54:7.2.4]

12110.2.43.1 Ceiling Locations. Gas pipingshall be permitted to be installed in accessible spaces

between a fixed ceiling and a dropped ceiling,whether or not such spaces are used as a plenum.Valves shall not be located in such spaces.Exception: Appliance shutoff valves required bythis code shall be permitted to be installed in acces-sible spaces containing vented gas utilization appli-ances.

12110.2.54 Prohibited Locations. Gas piping insideany a building shall not be installed in or through a cir-culating air duct, clothes chute, chimney or gas vent, ven-tilating duct, dumbwaiter, or elevator shaft, or air duct,other than combustion air ducts. [NFPA 54:7.2.5]Exception: This provision shall not apply to dDucts usedto provide combustion and ventilation air in accordancewith Section 5076.0 or to above-ceiling spaces as cov-ered in Section 121110.2.4.1.12110.2.65 Hangers, Supports, and Anchors.

1210.2.5.1 General Requirements. (A) Pipingshall be supported with metal pipe hooks, metal pipestraps, metal bands, metal brackets, metal hangers,or building structural components, suitable approvedfor the size of piping, of adequate strength and qual-ity; and located at intervals so as to prevent or dampout excessive vibration. Piping shall be anchored toprevent undue strains on connected appliances andequipment and shall not be supported by other pip-ing. Pipe hangers and supports shall conform tocomply with the requirements of MSS SP-58, PipeHangers and Supports Materials, Design and Man-ufacture. [NFPA 54:7.2.6.1]1210.2.5.2 Spacing. (B) Spacings of supports ingas-piping installations shall not exceed as the dis-tance shown in Table 12-3 1210.2.5.2. Spacing ofsupports for CSST shall be in accordance with theCSSTmanufacturer's instruction. [NFPA54:7.2.6.2]1210.2.5.3 Expansion and Contraction. (C)Supports, hangers, and anchors shall be installed soas not to interfere with the free expansion and con-traction of the piping between anchors. All pParts ofthe supporting equipment system shall be designedand installed so they will are not be disengaged bymovement of the supported piping. [NFPA54:7.2.6.3]

FUEL PIPING

STEEL PIPE,NOMINAL SIZE

OF PIPE(inches.)

SPACING OFSUPPORTS

(feet.)

NOMINAL SIZE OFTUBING SMOOTH-

WALL(Iinches. O.D.)

SPACING OFSUPPORTS

(feet.)

1⁄2 6 1⁄2 43⁄4 or 1 8 5⁄8 or 3⁄4 6

11⁄4 or larger(horizontal)

10 7⁄8 or 1(horizontal)

8

11⁄4 or larger(vertical)

every floorlevel

1 or larger(vertical)

every floorlevel

TABLE 12-3 1210.2.5.2SUPPORT OF PIPING[NFPA 54: Table 7.2.6.2]

For SI units: 1 inch = 25 mm, 1 foot. = 0.305 m 304.8 mm.


12110.2.76 Removal of Pipe Piping.Where pipingcontaining gas is to be removed, the line shall be firstdisconnected from sources of gas and then thoroughlypurged with air, water, or inert gas before any cutting orwelding is done. (See Section 1214.6.) [NFPA 54:7.2.7]

12110.3 Concealed Piping in Buildings.12110.3.1 General. Gas piping in concealed locationsshall be installed in accordance with this section. [NFPA54:7.3.1]12110.3.2 Connections. Where gas piping is to beconcealed, unions, tubing fittings, right and left cou-plings, bushings, swing joints, and compression cou-plings made by combinations of fittings shall not be used.Cconnections shall be of the following type:(1) Pipe fittings such as elbows, tees, and couplings, and

right/left nipple/couplings.(2) Joining tubing by brazing (See Section 12098.5.8.2).(3) Fittings listed for use in concealed spaces or that

have been demonstrated to sustain, without leakage,any forces due to temperature expansion or contrac-tion, vibration, or fatigue based on their geographiclocation, application, or operation.

(4) Where necessary to insert fittings in gas pipe thathas been installed in a concealed location, the pipeshall be reconnected by welding, flanges, or the useof a ground joint union with the nut center-punchedto prevent loosening by vibration right/left nip-ple/coupling. [NFPA 54:7.3.2]

12110.3.3 Piping in Partitions. Concealed gas pipingshall not be located in solid partitions. [NFPA 54:7.3.3]12110.3.4 Tubing in Partitions. This provision shallnot apply to tubing that pierces walls, floors, or partitionsor to tubing installed vertically and horizontally insidehollow walls or partitions without protection along itsentire concealed length where both of the following re-quirements are met:(1) A steel striker barrier not less than 0.0508 inches

(1.3 mm) thick, or equivalent, is installed betweenthe tubing, the finished wall and extends at least notless than 4 inches (1002 mm) beyond concealed pen-etrations of plates, fire stops, wall studs, and so on.

(2) The tubing is installed in single runs and is notrigidly secured. [NFPA 54:7.3.4]

12110.3.5 Piping in Floors. In industrial occupan-cies, gas piping in solid floors such as concrete shall belaid in channels in the floor and covered to permit accessto the piping with minimum damage to the building.Where piping in floor channels could be is capable ofbeing exposed to excessive moisture or corrosive sub-stances, the piping shall be protected in an approvedmanner. [NFPA 54:7.3.5.1]Exception: In other than industrial occupancies andwhere approved by the Authority Having Jurisdiction,gas piping embedded in concrete floor slabs constructedwith portland cement shall be surrounded with a mini-

mum not less than of one and one half (11⁄2) inches (38mm) of concrete and shall not be in physical contact withother metallic structures such as reinforcing rods or elec-trically neutral conductors. Piping, fittings, and risersshall be protected against corrosion in accordance withSection 12098.5.6. Piping shall not be embedded in con-crete slabs containing quick-set additives or cinder ag-gregate. [NFPA 54:7.3.5.2]

12110.4 Piping in Vertical Chases. (See Section 1202.0.)Where gas piping exceeding five (5) psi (34 kPa) is locatedwithin vertical chases in accordance with Section 12110.5,the requirements of Sections 12110.5.1 through Section12110.5.3 shall apply. [NFPA 54:7.4]12110.5 Maximum Design Operating Pressure. Themaximum design operating pressure for piping systems lo-cated inside buildings shall not exceed five (5) psi (34 kPa)unless one (1) or more of the following conditions are met:(1) The piping system is welded.(2) The piping is located in a ventilated chase or otherwise

enclosed for protection against accidental gas accumula-tion.

(3) The piping is located inside buildings or separate areas ofbuildings used exclusively for one of the following:(a) Industrial processing or heating.(b) Research.(c) Warehousing.(d) Boiler or mechanical equipment rooms.

(4) The piping is a temporary installation for buildings underconstruction.

(5) The piping serves appliances or equipment used for agri-cultural purposes.

(6) The piping system is an LP-Gas piping system with a de-sign operating pressure greater than exceeding 20 psi(138 kPa) and complies in accordance with NFPA 5854:5.5.2. Liquefied Petroleum Gas Systems LP-Gas sys-tems designed to operate below -5ºF (-21ºC) or with bu-tane or a propane-butane mix shall be designed to eitheraccommodate liquid LP-Gas or to prevent LP-Gas vaporfrom condensing back into liquid. [NFPA 54-09:5.5.1and 5.5.2]12110.5.1 Pressure Reduction. (See Section1202.0.) Where pressure reduction is required in branchconnections for compliance in accordance with Section12110.5, such reduction shall take place either inside thechase or immediately adjacent to the outside wall of thechase. Regulator venting and downstream overpressureprotection shall comply with Section 12098.7.5 and NFPASection 5.9. The regulator shall be accessible for serviceand repair, and vented in accordance with one (1) of thefollowing:(1) Where the fuel gas is lighter than air, regulators

equipped with a vent-limiting means shall be per-mitted to be vented into the chase. Regulators notequipped with a vent-limiting means shall be per-

FUEL PIPING

mitted to be vented either directly to the outdoors orto a point within the top one (1) foot (0.305mm) of thechase.

(2) Where the fuel gas is heavier than air, the regulatorvent shall be vented only directly to the outdoors.[NFPA 54:7.4.1]

12110.5.2 Liquefied Petroleum Gas Systems. Themaximum operating pressure of LP-Gas piping systemsshall be:(1) In accordance with Section 12110.5.1;(2) In accordance with NFPA58, where the pressure ex-

ceeds twenty (20) psi (138 kPa) and;(3) Designed to either accommodate liquid LP-Gas or

prevent LP-Gas vapor from condensing back into a liq-uid in buildings having systems designed to operatebelow -5ºF (-21ºC) or with butane or a propane–butanemix.

12110.5.3 Construction. Chase construction shallcomply with local building codes with respect to fire re-sistance and protection of horizontal and vertical open-ings. [NFPA 54:7.4.2]12110.5.4 Ventilation. A chase shall be ventilated tothe outdoors and only at the top. The openings shall havea minimum free area (in square inches) equal to the prod-uct of one-half (1⁄2) of the maximum pressure in the pip-ing (in psi) times the largest nominal diameter of thatpiping (in inches), or the cross-sectional area of thechase, whichever is smaller. Where more than one (1)fuel gas piping system is present, the free area for eachsystem shall be calculated and the largest area used.[NFPA 54:7.4.3]

12110.6 Appliance Over Pressure Protection. Themaximum operating pressure for piping systems serving ap-pliances designed to operate at fourteen (14) inches w.c. watercolumn (3.5 kPa) inlet pressure or less shall be two (2) psig 14kPa) unless an over-pressure protection device designed tolimit pressure at the appliance to two (2) psig (14 kPa) uponfailure of the line gas pressure regulator is installed.12110.7 Gas Pipe Turns. Changes in direction of gas pipeshall be made by the use of fittings, or factory bends, or fieldbends. [NFPA 54:7.5]

12110.7.1 Metallic Pipe. Metallic pipe bends shallcomply with the following:(1) Bends shall be made only with bending equipment

and procedures intended for that purpose.(2) Bends shall be smooth and free from buckling,

cracks, or other evidence of mechanical damage.(3) The longitudinal weld of the pipe shall be near the

neutral axis of the bend.(4) The pipe shall not be bent through an arc of more

than 90 degrees (1.57 rad).(5) The inside radius of a bend shall be not less than six

(6) times the outside diameter of the pipe. [NFPA54:7.5.1]

12110.7.2 Plastic Pipe. Plastic pipe bends shall com-ply with the following:(1) The pipe shall not be damaged and the internal di-

ameter of the pipe shall not be effectively reduced.(2) Joints shall not be located in pipe bends.(3) The radius of the inner curve of such bends shall be

not less than twenty-five (25) times the inside di-ameter of the pipe.

(4) Where the piping manufacturer specifies the use ofspecial bending equipment or procedures, suchequipment or procedures shall be used. [NFPA54:7.5.2]

12110.7.3 Elbows. Factory-made welding elbows ortransverse segments cut therefrom shall have an arclength measured along the crotch of at least not less thanone (1) inch (25.4 mm) for pipe sizes two (2) inches (50mm) and larger. [NFPA 54:7.5.3]

12110.8 Drips and Sediment Traps.12110.8.1 Provide Drips Where Necessary. Forother than dry gas conditions, a drip shall be provided atany a point in the line of pipe where condensate is capa-ble of collecting could collect.Where required by theAu-thority Having Jurisdiction or the serving gas supplier, adrip shall also be provided at the outlet of the meter. Thisdrip shall be so installed as to constitute a trap wherein anaccumulation of condensate will shut off the flow of gasbefore it will run back into the meter. [NFPA 54:7.6.1]12110.8.2 Location of Drips. Drips shall be installedonly in such locations that they will be readily accessibleto permit cleaning or emptying. A drip shall not be lo-cated where the condensate is likely to freeze. [NFPA54:7.6.2]12110.8.3 Sediment Traps. (See Section 1212.7.)The installation of sediment traps shall comply with Sec-tion 1211.7.

12110.9 Outlets.12110.9.1 Location and Installation. Outlets shallbe located and installed in accordance with the follow-ing requirements:(1) The outlet fittings or piping shall be securely fas-

tened in place. [NFPA 54:7.7.1.1](2) Outlets shall not be located behind doors. [NFPA

54:7.7.1.2](3) Outlets shall be located far enough from floors,

walls, patios, slabs, and ceilings to permit the use ofwrenches without straining, bending, or damagingthe piping. [NFPA 54:7.7.1.3]

(4) The unthreaded portion of gas piping outlets shallextend not less than one (1) inch (25.4 mm) throughfinished ceilings or indoor or outdoor walls. [NFPA54:7.7.1.4]

(5) The unthreaded portion of gas piping outlets shallextend not less than two (2) inches (501 mm) abovethe surface of floors or outdoor patios or slabs.[NFPA 54:7.7.1.5]


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(6) The provisions of Sections 12110.79.1(4) and Sec-tion 1210.9.1(5) shall not apply to listed quick-dis-connect devices of the flush-mounted type or listedgas convenience outlets. Such devices shall be in-stalled in accordance with the manufacturer’s in-stallation instructions. [NFPA 54:7.7.1.6]

12110.9.2 Cap Outlets.1210.9.2.1 Gas-Tight. (A) Each outlet, includinga valve, shall be closed gas-tight with a threadedplug or cap immediately after installation and shallbe left closed until the gas utilization appliance isconnected thereto. WhenWhere an appliance is dis-connected from an outlet and the outlet is not to beused again immediately, it shall be closed gas-tight.[NFPA 54:7.7.2.1]Exceptions:(1) Exception No. 1: Laboratory equipment in-

stalled in accordance with Section 12121.2(A1)shall be permitted.

(2) Exception No. 2: The use of a listed quick-dis-connect device with integral shutoff or listedgas convenience outlet shall be permitted.

1210.9.2.2 Appliance Shutoff Valves (B) Ap-pliance shutoff valves installed in fireplaces shall beremoved and the piping capped gas-tight where thefireplace is used for solid-fuel burning. [NFPA54:7.7.2.2]

12110.10 Branch Pipe Connection. When Where abranch outlet is placed on a main supply line before it isknown what size pipe will be connected to it, the outlet shallbe of the same size as the line that supplies it. [NFPA 54:7.8]12110.11 Manual Gas Shutoff Valves. (Also see Sec-tion 1212.5)

12110.11.1 Valves at Regulators. An accessible gasshutoff valve shall be provided upstream of each gaspressure regulator. Where two (2) gas pressure regula-tors are installed in series in a single gas line, a manualvalve shall not be required at the second regulator. [NFPA54:7.9.1]12110.11.2 Valves Controlling Multiple Systems.

1210.11.2.1 (A) Accessibility of Gas Valves.Main gas shutoff valves controlling several gas pip-ing systems shall be readily accessible for operationand installed so as to be protected from physicaldamage. They shall be marked with a metal tag orother permanent means attached by the installingagency so that the gas piping systems suppliedthrough them can be are readily identified. [NFPA54:7.9.2.1]1210.11.2.2 (B) Shutoff Valves for MultipleHouse Lines. In multiple-tenant buildings sup-plied through a master meter, or through one (1)service regulator where a meter is not provided, orwhere meters or service regulators are not readily

accessible from the equipment location, an individ-ual shutoff valve for each apartment or tenant lineshall be provided at a convenient point of generalaccessibility.

In a common system serving a number of indi-vidual buildings, shutoff valves shall be installed ateach building. [NFPA 54:7.9.2.2]

12110.11.3 Emergency Shutoff Valves. An exte-rior shutoff valve to permit turning off the gas supply toeach building in an emergency shall be provided. Theemergency shutoff valves shall be plainly marked as suchand their locations posted as required by the AuthorityHaving Jurisdiction. [NFPA 54:7.9.2.3]12110.11.4 Shutoff Valve For Laboratories. Eachlaboratory space containing two (2) or more gas outletsinstalled on tables, benches, or in hoods in educational,research, commercial and industrial occupancies shallhave a single shutoff valve through which such gas out-lets are supplied. The shutoff valve shall be accessibleand shall be located within the laboratory or located ad-jacent to the laboratory’s egress door and shall be iden-tified. [NFPA 54-09:7.9.2.4]

12110.12 Prohibited Devices. No device shall be placedinside the gas piping or fittings that will reduce the cross-sec-tional area or otherwise obstruct the free flow of gas, exceptwhere proper an allowance in the piping system design hasbeen made for such a device and where approved by the Au-thority Having Jurisdiction. [NFPA 54:7.10]12110.13 Systems Containing Gas-Air Mixtures Out-side the Flammable Range. Where gas-air mixing ma-chines are employed to produce mixtures above or below theflammable range, they shall be provided with stops to pre-vent adjustment of the mixture to within or approaching theflammable range. [NFPA 54:7.11]12110.14 Systems Containing Flammable Gas-AirMixtures. Systems containing flammable gas-air mixturesshall be in accordance with NFPA 54.12110.15 Electrical Bonding and Grounding.

12110.15.1 Pipe and Tubing other than CSST.Each above ground portion of a gas piping system otherthan CSST that is likely to become energized shall beelectrically continuous and bonded to an effectiveground-fault current path. Gas piping, other than CSSTshall be considered to be bonded when where it is con-nected to appliances that are connected to the appliancegrounding conductor of the circuit supplying that appli-ance. [NFPA 54-09:7.13.1]12110.15.2 Bonding of CSST Gas Piping. CSSTgas piping systems shall be bonded to the electrical serv-ice grounding electrode system at the point where the gasservice enters the building. The bonding jumper shallconnect to a metallic pipe or fitting between the point ofdelivery and the first downstream CSST fitting. Thebonding jumper shall be not smaller than six (6) AWGcopper wire or equivalent. Gas piping systems that con-tain one or more segments of CSST shall be bonded inaccordance with this section. [NFPA 54-0912:7.13.2]

FUEL PIPING


12110.15.3 Grounding Conductor or Electrode.Gas piping shall not be used as a grounding conductoror electrode. This does not preclude the bonding ofmetallic piping to a grounding system. [NFPA 54-0912:7.13.3]12110.15.4 Lighting Protection System. Where alightning protection system is installed, the bonding ofthe gas piping system shall be in accordance with NFPA780, Standard for Installation of Lightning ProtectionSystems. [NFPA 54-09:7.13.4]

12110.16 Electrical Circuits. Electrical circuits shall notutilize gas piping or components as conductors. [NFPA54:7.14]Exception: Low-voltage (50V or less) control circuits, igni-tion circuits, and electronic flame detection device circuitsshall be permitted to make use of piping or components as apart of an electric circuit.12110.17 Electrical Connections.

1210.17.1 Connections. (A) Electrical connectionsbetween wiring and electrically operated control devicesin a piping system shall conform to comply with the re-quirements of NFPA 70, National Electrical Code. (SeeSection 1211.14) [NFPA 54:7.15.1]1210.17.2 Safety Control. (B) Any An essentialsafety control depending on electric current as the oper-ating medium shall be of a type that will shut off (failsafe) the flow of gas in the event of current failure.[NFPA 54:7.15.2]

12121.0 Appliance Connections to Building Piping.12121.1 Connecting Gas Appliances. Gas utilizationaAppliances shall be connected to the building piping in com-pliance accordance with Sections 12121.5 and Section12121.6 by one of the following [NFPA 54:9.6.1]:(1) Rigid metallic pipe and fittings. [NFPA 54:9.6.1(1)](2) Semirigid metallic tubing and metallic fittings. Alu-

minum alloy tubing shall not be used in exterior loca-tions. [NFPA 54:9.6.1(2)]

(3) ALlisted flexible gas connectors installed in complianceaccordance with CSAANSI Z21.24/CSA6.10, Standardfor Connectors for Gas Appliances. The connector shallbe used in accordance with the terms of their listing thatare completely manufacturer’s installation instructionsand shall be in the same room as the appliance. One con-nector shall be used per appliance. [NFPA 54:9.6.1(3)]

(4) CSST where installed in accordance with the manufac-turer's installation instructions. [NFPA 54:9.6.1(5)]

(5) Listed nonmetallic gas hose connectors installed in ac-cordance with Section 12121.3. [NFPA 54:9.6.1(6)]

(6) Gas-fired food service (cCommercial cooking) applianceslisted for use with casters or otherwise subject to move-ment that are moved for cleaning and sanitation purposes,and other large and heavy gas utilization appliances thatcan be moved, shall be connected in accordance with the

connector manufacturer's installation instructions using alisted appliance connector complying that is in accor-dance with CSAANSI Z21.69/CSA 6.22, Standard forConnectors for Movable Gas Appliances. The commer-cial cooking appliance connector installation shall be con-figured in accordance with the manufacturer’s installationinstructions. (NFPA 54:9.6.1.1)

(7) Movement of appliances with casters shall be limited bya restraining device installed in accordance with the con-nector and appliance manufacturer's installation instruc-tions. [NFPA 54-09:9.6.1.2]

(8) In Sections 12121.1(2), 1211.1(3), and 1211.1(5), theconnector or tubing shall be installed so as to be pro-tected against physical and thermal damage. Aluminumalloy tubing and connectors shall be coated to protectagainst external corrosion where they are in contact withmasonry, plaster, insulation, or are subject to repeatedwettings by such liquids as water (except rainwater), de-tergents, or sewage.[NFPA 54:9.6.1(7)]

12121.2 Suspended Low-Intensity Infrared TubeHeaters. Suspended low-intensity infrared tube heaters shallbe connected to the building piping system with a connectorlisted for the application in accordance with CSA ANSIZ21.24/CGA 6.10, Connectors for Gas Appliances and thefollowing requirements. [NFPA 54-09:9.6.1.3](A1) The connector shall be installed in accordance with the

tube heater installation instructions, and shall be in thesame room as the appliance.

(B2) Only oOne connector shall be used per appliance.12121.3 Use of Nonmetallic Gas Hose Connectors.Listed nonmetallic gas hose connectors shall be used in ac-cordance with the terms of their listing manufacturer’s in-stallation instructions and as follows indicated in thefollowing sections. [NFPA 54:9.6.2]:

1211.3.1 (A) Indoor. Indoor gas hose connectors shallbe used only to connect laboratory, shop, and ironingequipment requiring mobility during operation. Anequipment appliance shutoff valve shall be installedwhere the connector is attached to the building piping.The connector shall be of minimum length and shall notexceed six (6) feet (1,829 mm). The connector shall notbe concealed and shall not extend from one (1) room toanother or pass through wall partitions, ceilings, orfloors.1211.3.2 (B) Outdoor.Where Ooutdoor gas hose con-nectors are permitted used to connect portable outdoorgas-fired appliances, the connector shall be listed in ac-cordance with CSAZ21.54b.An appliance shutoff valve,a listed quick-disconnect device, or a listed gas conven-ience outlet shall be installed where the connector is at-tached to the supply piping and in such a manner toprevent the accumulation of water or foreign matter. Thisconnection shall be made only in the outdoor area wherethe appliance is to be used. The connector length shallnot exceed fifteen (15) feet (4,572 mm).

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12121.4 Connection of Portable and Mobile Indus-trial Gas Appliance.

1211.4.1 Flexible Hose (A)Where portable industrialgas utilization appliances, or appliances requiring mo-bility or subject to vibration, are connected to the build-ing gas piping system by the use of a flexible hose, thehose shall be suitable approved and safe for the condi-tions under which it can be is used. [NFPA 54:9.6.3.1]1211.4.2 Swivel Joints or Couplings. (B) Whereindustrial gas utilization appliances requiring mobility areconnected to the rigid piping by the use of swivel joints orcouplings, the swivel joints or couplings shall be suitableapproved for the service required, and only the minimumnumber required shall be installed. [NFPA 54:9.6.3.2]1211.4.3 All-Metal Flexible Connectors. (C)Whereindustrial gas utilization appliances subject to vibrationare connected to the building piping system by the useof all-metal flexible connectors, the connectors shall besuitable approved for the service required. [NFPA54:9.6.3.3]1211.4.4 Flexible Connectors. (D) Where flexibleconnections are used, they shall be of the minimum prac-tical length and shall not extend from one (1) room to an-other or pass through any walls, partitions, ceilings, orfloors. Flexible connections shall not be used in any a con-cealed location. They shall be protected against physical orthermal damage and shall be provided with gas shutoffvalves in readily accessible locations in rigid piping up-stream from the flexible connections. [NFPA 54:9.6.3.4]

12121.5 Appliance Shutoff Valves and Connections.Gas utilization aAppliance connected to a piping system shallhave an accessible, approved manual shutoff valve with anondisplaceable valve member, or a listed gas convenienceoutlet installed within six (6) feet (1.8 1829 mm) of the ap-pliance it serves. Where a connector is used, the valve shallbe installed upstream of the connector. A union or flangedconnection shall be provided downstream from this valve topermit removal of controls. Shutoff valves serving decorativegas appliances shall be permitted to be installed in fireplacesif where listed for such use. [NFPA 54:9.6.4]12121.6 Quick-Disconnect Devices. Quick-disconnectdevices used to connect appliances to the building piping shallbe listed.Where they are installed indoors, an approved man-ual shutoff valve with a nondisplaceable valve member shallbe installed upstream of the quick-disconnect device. [NFPA54:9.6.5]12121.7 Sediment Trap.Where a sediment trap is not in-corporated as a part of the gas utilization appliance, a sedi-ment trap shall be installed downstream of the applianceshutoff valve as close to the inlet of the appliance as practi-cal at the time of appliance installation. The sediment trapshall be either a tee fitting with a capped nipple in the bottomoutlet, as illustrated in Figure 12-1 1211.7, or other devicerecognized as an effective sediment trap. Illuminating appli-ances, ranges, clothes dryers, decorative vented appliancesfor installation in vented fireplaces, gas fireplaces, and out-door grills shall not be required to be so equipped. [NFPA54-09:9.6.7]

12121.8 Installation of Piping. Piping shall be installedin a manner not to interfere with inspection, maintenance, orservicing of the gas utilization equipment appliance. [NFPA54:9.6.8]

12132.0 Liquefied Petroleum Gas Facilities and Pip-ing.1212.1 General. Liquefied petroleum gas facilities shallcomply with NFPA 58, Liquefied Petroleum Gas Code.

12143.0 Pressure Testing and Inspection.12143.1 General.

12143.1.1 Inspection and Testing. Prior to accept-ance and initial operation, piping installations shall bevisually inspected and pressure-tested to determine thatthe materials, design, fabrication, and installation prac-tices comply are in accordance with the requirements ofthis code. [NFPA 54-12:8.1.1.1]12143.1.2 Inspection Requirements. Inspectionshall consist of visual examination during or after man-ufacture, fabrication, assembly, or pressure tests., as ap-propriate. Supplementary types of non-destructiveinspection techniques, such as magnetic-particle, radi-ographic, and ultrasonic, shall not be required unlessspecifically listed herein or in the engineering design.[NFPA 54-12:8.1.1.2]12143.1.3 Repairs and Additions.Where repairs oradditions are made following the pressure test, the af-fected piping shall be tested. Minor repairs and additionsare not required to be pressure-tested provided that thework is inspected and connections are tested with a non-corrosive leak-detecting fluid or other leak-detectingmethods approved by theAuthority Having Jurisdiction.[NFPA 54:8.1.1.3]12143.1.4 New Branches. Where new branches areinstalled from the point of delivery to new appliances,only the newly installed branches shall be required to bepressure-tested. Connections between the new piping and

FUEL PIPING

For SI units: 1 inch = 25.4 mm

FIGURE 12-1 1211.7 METHOD OF INSTALLING ATEE FITTING SEDIMENT TRAP.

the existing piping shall be tested with a noncorrosiveleak-detecting fluid or approved leak-detecting methods.[NFPA 54:8.1.1.4]12143.1.5 Testing. A piping system shall be tested asa complete unit or in sections. Under no circumstancesshall a valve in a line be used as a bulkhead between gasin one (1) section of the piping system and test mediumin an adjacent section, unless two (2) valves are installedin series with a valved "telltale" located between thesevalves.A valve shall not be subjected to the test pressureunless it can be is determined that the valve, includingthe valve-closing mechanism, is designed to safely with-stand the pressure. [NFPA 54:8.1.1.5]12143.1.6 Regulators and Valves. Regulator andvalve assemblies fabricated independently of the pipingsystem in which they are to be installed shall be permit-ted to be tested with inert gas or air at the time of fabri-cation. [NFPA 54:8.1.1.6]12143.1.7 Test Medium. The test medium shall be air,nitrogen, carbon dioxide, or an inert gas. OXYGENSHALL NEVER BE USED. [NFPA 54:8.1.2]

12143.2 Test Preparation.12143.2.1 Pipe Joints. Pipe joints, including welds,shall be left exposed for examination during the test.[NFPA 54:8.1.3.1]Exception: Covered or concealed pipe end joints thathave been previously tested in accordance with this code.12143.2.2 Expansion Joints. Expansion joints shallbe provided with temporary restraints, if where requiredfor the additional thrust load under test. [NFPA54:8.1.3.2]12143.2.3 Appliances and Equipment. Appliancesand equipment that are not to be included in the test shallbe either disconnected from the piping or isolated byblanks, blind flanges, or caps. Flanged joints at whichblinds are inserted to blank off other equipment duringthe test shall not be required to be tested. [NFPA54:8.1.3.3]12143.2.4 Designed for (less than) OperatingPressures. Where the piping system is connected toappliances, equipment, or equipment components de-signed for operating pressures of less than the test pres-sure, such appliances, equipment, or equipmentcomponents shall be isolated from the piping system bydisconnecting them and capping the outlets. [NFPA54:8.1.3.4]12143.2.5 Designed for (equal to or more than)Operating Pressures. Where the piping system isconnected to appliances, equipment, or equipment com-ponents designed for operating pressures equal to orgreater than exceeding the test pressure, such appliancesand equipment shall be isolated from the piping systemby closing the individual appliance or equipment shutoffvalve(s). [NFPA 54:8.1.3.5]12143.2.6 Safety. Testing of piping systems shall bedone with due regard for the safety of employees and thepublic during the test. Bulkheads, anchorage, and bracing

suitably designed to resist test pressures shall be installedif where necessary. Prior to testing, the interior of the pipeshall be cleared of foreign material. [NFPA 54:8.1.3.6]

12143.3 Test Pressure.12143.3.1 General. Test pressure shall be measuredwith a manometer or with a pressure-measuring devicedesigned and calibrated to read, record, or indicate apressure loss due to leakage during the pressure test pe-riod. The source of pressure shall be isolated before thepressure tests are made. Mechanical gauges used tomeasure test pressures shall have a range such that thehighest end of the scale does not exceed five (5) timesthe test pressure. [NFPA 54:8.1.4.1]1214.3.2 The test pressure to be used shall be not lessthan one and one half (1-1⁄2) times the proposed maxi-mum working pressure, but not less than three (3) psi (20kPa), irrespective of design pressure. [NFPA 54:8.1.4.2]1214.3.3 Test duration shall be not less than one-half(1⁄2) hour for each five-hundred (500) cubic feet (14 m3)of pipe volume or fraction thereof.When testing a systemhaving a volume less than ten (10) cubic feet (0.28 m3)or a system in a single-family dwelling, the test durationshall be not less than ten (10) minutes. The duration ofthe test shall not be required to exceed twenty-four (24)hours. [NFPA 54:8.1.4.3] This inspection shall includean air, CO2, or nitrogen pressure test, at which time thegas piping shall stand a pressure of not less than 10 psi(69 kPa) gauge pressure. Test pressures shall be held fora length of time satisfactory to the Authority Having Ju-risdiction, but in no case less than 15 minutes with noperceptible drop in pressure. For welded piping, and forpiping carrying gas at pressures in excess of 14 incheswater column pressure (3.5 kPa), the test pressure shallbe not less than 60 psi (414 kPa) and shall be continuedfor a length of time satisfactory to the Authority HavingJurisdiction, but in no case for less than 30 minutes.These tests shall be made using air, CO2, or nitrogenpressure and shall be made in the presence of the Au-thority Having Jurisdiction. Necessary apparatus for con-ducting tests shall be furnished by the permit holder. Testgauges used in conducting tests shall be in accordancewith Section 317.0.

12143.4 Detection of Leaks and Defects.12143.4.1 Indication of Leaks. The piping systemshall withstand the test pressure specified without show-ing any evidence of leakage or other defects. Any rRe-duction of test pressures as indicated by pressure gaugesshall be deemed to indicate the presence of a leak unlesssuch reduction can be is readily attributed to some othercause. [NFPA 54:8.1.5.1]12143.4.2 Detecting Leaks. The leakage shall be lo-cated by means of an approved gas detector, a noncorro-sive leak detection fluid, or other approved leak detectionmethods. Matches, candles, open flames, or other meth-ods that provide a source of ignition shall not be used.[NFPA 54:8.1.5.2]


FUEL PIPING


12143.4.3 Repair or Replace. Where leakage orother defects are located, the affected portion of the pip-ing system shall be repaired or replaced and retested.[(See Section 1214.1.3).] [NFPA 54:8.1.5.3]

12143.5 Piping Systems Leak Check.12143.5.1 Test Gases. Leak checks using fuel gasshall be permitted in piping systems that have been pres-sure-tested in accordance with Section 12143.0. [NFPA54:8.2.1]12143.5.2 Turning Gas On. During the process ofturning gas on into a system of new gas piping, the entiresystem shall be inspected to determine that there are noopen fittings or ends and that valves at unused outlets areclosed and plugged or capped. [NFPA 54-09:8.2.2]12143.5.3 Leak Check. Immediately after the gas isturned on into a new system or into a system that hasbeen initially restored after an interruption of service, thepiping system shall be checked for leakage. Where leak-age is indicated, the gas supply shall be shut off until thenecessary repairs have been made. [NFPA 54:8.2.3]12143.5.4 Placing Appliances and Equipment inOperation. Gas utilization aAppliances and equipmentshall not be placed in operation until after the piping sys-tem has been tested checked in accordance with Section12143.5.3, connections to the appliance are checked forleakage, and purged in accordance with Section 12143.6.2.[NFPA54-12:8.2.4]

1214.6 Purging.1214.6.1 Removal From Service.When gas pipingis to be opened for servicing, addition, or modification,the section to be worked on shall be turned off from thegas supply at the nearest convenient point and the linepressure vented to the outdoors or to ventilated areas ofsufficient size to prevent accumulation of flammablemixtures. The remaining gas in this section of pipe shallbe displaced with an inert gas as required by Table 12-5.[NFPA 54:8.3.1]1214.6.2 Placing in Operation.When piping full ofair is placed in operation, the air in the piping shall be dis-placed with fuel gas, except where such piping is requiredby Table 12-6 to be purged with an inert gas prior to in-troduction of fuel gas. The air can be safely displaced withfuel gas provided that a moderately rapid and continuousflow of fuel gas is introduced at one (1) end of the lineand air is vented out at the other end. The fuel gas flowshall be continued without interruption until the ventedgas is free of air. The point of discharge shall not be leftunattended during purging. After purging, the vent shallthen be closed. Where required by Table 12-6, the air inthe piping shall first be displaced with an inert gas, andthe inert gas shall then be displaced with fuel gas. [NFPA54:8.3.2]1214.6.3 Discharge of Purged Gases. The openend of piping systems being purged shall not dischargeinto confined spaces or areas where there are sources ofignition unless precautions are taken to perform this op-

eration in a safe manner by ventilation of the space, con-trol of purging rate, and elimination of hazardous condi-tions. [NFPA 54:8.3.3]1214.6.4 Placing Appliances in Operation. Afterthe piping has been placed in operation, appliances shallbe purged and then placed in operation, as necessary.[NFPA 54:8.3.4]

1213.6 Purging. Purging shall comply with Section1213.6.1 and Section 1213.6.4.

1213.6.1 Where Required.1213.6.1.1 Conditions. The purging of pipingsystems shall be in accordance with Section1213.6.2 through Section 1213.6.4 where the pipingsystem meets either of the following:(1) The designed operating gas pressure is greater

than 2 psig (14 kPa).(2) The piping being purged contains pipe sizes

greater than 2 inches (50 mm).1213.6.1.2 Monitored.Where piping systems notcovered under Section 1213.6.1.1 are purged withfuel gas the discharge point, whether indoor or out-door, shall be attended and monitored with a com-bustible gas indicator and purging stopped wherefuel gas is indicated at the discharge point.

1213.6.2 Removal From Service. Where existinggas piping meeting Section 1213.6.1 is to be opened foran addition, or modification, or service, the section to beworked on shall be isolated from the gas supply and theline pressure vented in accordance with Section 1213.6.4.Where gas piping meeting the criteria of Table 1213.6.2is removed from service the residual fuel gas in the pip-ing shall be displaced with an inert gas.

1213.6.3 Placing in Operation. Where gas pipingmeeting the criteria of Table 1213.6.2, containing air, isplaced in operation the air in the piping shall first be dis-placed with an inert gas. The inert gas shall then be dis-placed with fuel gas in accordance with Section 1213.6.4.1213.6.4 Outdoor Discharge of Purged Gases.The open end of piping systems being pressure ventedor purged shall discharge directly to an outdoor locationin accordance with the following requirements:

FUEL PIPING

NOMINAL PIPE SIZE(inch.)

LENGTH OF PIPINGREQUIRING PURGING

(feet.)21⁄2 > 503 > 304 > 156 > 10

8 or larger Any length

TABLE 12-5 1213.6.2LENGTH OF PIPING REQUIRING PURGING WITH INERT GAS

FOR SERVICING OR MODIFICATION[NFPA 54: TABLE 8.3.1]

For SI units: 1 inch = 25 mm, 1 foot. = 0.305 304.8 mm.

(1) The point of discharge shall be controlled with ashutoff valve.

(2) The discharge point shall be not less than 10 feet(3048 mm) from sources of ignition, located not lessthan 10 feet (3048 mm) from building openings, andnot less than 25 feet (7620 mm) from mechanical airintake openings.

(3) During discharge, the open discharge point shall becontinuously attended and monitored with a com-bustible gas indicator.

12154.0 Interconnections Between Gas Piping Sys-tems. [NFPA 54:5.3]12154.1 Interconnections Supplying SeparateUsers. Where two (2) or more meters, or two (2) or moreservice regulators where meters are not provided, are locatedon the same premises and supply separate users, the gas-pip-ing systems shall not be interconnected on the outlet side ofthe meters or service regulators. [NFPA 54:5.3.1]12154.2 Interconnections for Standby Fuels. Wheresupplementary gas for standby use is connected downstreamfrom a meter or a service regulator where a meter is not pro-vided, a device to prevent backflow shall be installed. [NFPA54:5.3.2.1] A three-way valve installed to admit the standbysupply and at the same time shut off the regular supply shallbe permitted to be used for this purpose. [NFPA 54:5.3.2.2]

12165.0 Required Gas Supply.12165.1 General. The following regulations, as set forth inthis section and in Section 12176.0, Required Gas PipingSize, shall be the standard for the installation of gas piping.Natural gas regulations and tables are based on the use of gashaving a specific gravity of sixty-hundredths (0.60), suppliedat six (6) to eight (8) inches (152 to 203 mm) water column(1.5 kPa to 1.9 kPa) pressure at the outlet of the meter or reg-ulator. For undiluted liquefied petroleum gas, gas piping shallbe permitted to be sized at eleven (11) inches (279 mm) watercolumn (2.7 kPa) pressure at the outlet of the meter or regu-lator and specific gravity of one and fifty-hundredths (1.50).Note:Where gas of a different specific gravity is to be deliv-ered, the serving gas supplier should be contacted for specificgravity conversion factors to use provided by the serving gassupplier shall be used in sizing piping systems from the pipesizing tables in this chapter.12165.2 Volume. The hourly volume of gas required ateach piping outlet shall be taken as not less than the maxi-

mum hourly rating as specified by the manufacturer of theappliance or appliances to be connected to each such outlet.12165.3 Gas Appliances.Where the gas appliances to beinstalled have not been definitely specified, Table 12-11208.4.2 shall be permitted to be used as a reference to esti-mate requirements of typical appliances.

To obtain the cubic feet per hour (L/sec.) of gas required,divide input of appliances by the average Btu (Watt-hour kW)heating value per cubic foot (L) of the gas. The average Btu(Watt-hour kW) per cubic foot (L) of the gas in the area ofthe installation shall be permitted to be obtained from theserving gas supplier.12165.4 Size of Piping Outlets. The size of the supplypiping outlet for any a gas appliance shall not be less thanone-half (1⁄2) of an inch (15 mm).

Theminimum size of any a piping outlet for amobile homeshall be not less than three-quarters (3⁄4) of an inch (20 mm).

12176.0 Required Gas Piping Size.12176.1 Pipe Sizing Methods. Where the pipe size is tobe determined using any a of the methods in Sections12176.1.1 through Section 12176.1.3, the diameter of eachpipe segment shall be obtained from the pipe-sizing tables inSection 12176.2 or from the sizing equations in Section12176.3. [NFPA 54:6.1]

12176.1.1 Longest Length Method. The pipe size ofeach section of gas piping shall be determined using thelongest length of piping from the point of delivery to themost remote outlet and the load of the section (sSee calcu-lation example in Figure 12-2 1216.1.1). [NFPA54:6.1.1]12176.1.2 Branch Length Method. Pipe shall besized as follows [NFPA 54:6.1.2]:(1) (A) Pipe size of each section of the longest pipe run

from the point of delivery to the most remote outletshall be determined using the longest run of pipingand the load of the section.

(2) (B)The pipe size of each section of branch piping notpreviously sized shall be determined using the lengthof piping from the point of delivery to the most re-mote outlet in each branch and the load of the section.

12176.1.3 Hybrid Pressure.The pipe size for each sec-tion of higher-pressure gas piping shall be determined usingthe longest length of piping from the point of delivery to themost remote line pressure regulator. The pipe size from theline pressure regulator to each outlet shall be determinedusing the length of piping from the regulator to the mostremote outlet served by the regulator. [NFPA54:6.1.3]

12176.2 Tables for Sizing Gas-Piping Systems. Ta-bles 12-8 1216.2(1) through Table 12-41 1216.2(36) shall beused to size gas piping in conjunction with one (1) of themethods described in Sections 12176.1.1 through Section12176.1.3. [NFPA 54:6.2]12176.3 Sizing Equations. The inside diameter ofsmooth-wall pipe or tubing shall be determined by the sizingeEquations 12-1 1216.3(1) or Equation 12-2 1216.3(2), usingthe equivalent pipe length determined by Sections 12176.1.1through Section 12176.1.3. [NFPA 54:6.4]


FUEL PIPING

NOMINAL PIPE SIZE (in.) LENGTH OF PIPING REQUIRINGPURGING (ft.)

3 > 304 > 156 > 10

8 or larger Any length

TABLE 12-6Length of Piping Requiring Purging with Inert Gas Before

Placing in Operation[NFPA 54: Table 8.3.2]

For SI units: 1 ft. = 0.305 m.

Equation 12-1 1216.3(1) Low-Pressure Gas Formula (Lessthan 1.5 psi [10.3 kPa]): [NFPA 54:6.4.1]

where:D = inside diameter of pipe, inchesQ = input rate appliance(s), cubic feet per hour at 60˚F

(16ºC) and 30 inch (759 mm) mercury columnP1 = upstream pressure, psia (P1 + 14.7)P2 = downstream pressure, psia (P2 + 14.7)L = equivalent length of pipe, feet∆H =pressure drop, inches water column (27.7 in. H2O=1 psi)Cr and Y in accordance with with Table 1216.3For SI units: 1 inch = 25 mm, 1 pound-force per square inch = 6.894 kPa, t/°C= (t/°F-32)/1.8, 1 inch mercury column = 3.39 kPa, 1 inch water column =0.249 kPa.

Equation 12-2 1216.3(2) High-Pressure Gas Formula (1.5psi [10.3 kPa] and above): [NFPA 54:6.4.2]

where:D = inside diameter of pipe, inchesQ = input rate appliance(s), cubic feet per hour at 60ºF

(16ºC) and 30 inch (759 mm) mercury columnP1 = upstream pressure, psia (P1 + 14.7)P2 = downstream pressure, psia (P2 + 14.7)L = equivalent length of pipe, feet.∆H= pressure drop, inches water column (27.7 in. H2O=1 psi)Cr and Y in accordance with with Table 1216.3For SI units: 1 inch = 25 mm, 1 pound-force per square inch = 6.894 kPa, t/°C= (t/°F-32)/1.8, 1 inch mercury column = 3.39 kPa, 1 inch water column =0.249 kPa.

12176.4 Sizing of Piping Sections. To determine the sizeof each section of pipe in any a system within the range ofthe Table 1216.2(1) through Table 1216.2(36), proceed as fol-lows:(1) (A) Measure the length of the pipe from the gas

meter location to the most remote outlet on the system.(2) (B) Select the length in feet column and row showing the

distance, or the next longer distance if where the tabledoes not give the exact length.

(3) (C) Starting at the most remote outlet, find in the rowjust selected the gas demand for that outlet. If Where theexact figure of demand is not shown, choose the nextlarger figure in the row.

(4) (D) At the top of this column will be found the correctsize of pipe.

(5) (E) Using this same row, proceed in a similar manner foreach section of pipe serving this outlet. For each sectionof pipe, determine the total gas demand supplied by thatsection. Where gas piping sections serve both heatingand cooling appliances and the installation prevents bothunits from operating simultaneously, only the larger ofthe two (2) demand loads needs be used in sizing thesesections.

(6) (F) Size each section of branch piping not previouslysized by measuring the distance from the gas meter lo-cation to the most remote outlet in that branch and followthe procedures of steps B, C, D, and E 2, 3, 4, and 5above.Note: Size branch piping in the order of their dis-tance from the meter location, beginning with the mostdistant outlet not previously sized.

12176.5 Engineering Methods. For conditions other thanthose covered by Section 12176.1, such as longer runs orgreater gas demands, the size of each gas piping system shallbe determined by standard engineering methods acceptableto the Authority Having Jurisdiction, and each such systemshall be so designed that the total pressure drop between themeter or other point of supply and any an outlet when wherefull demand is being supplied to all outlets, shall comply bein accordance with the requirements of Section 12098.4.12176.6 Variable Gas Pressure.Where the gas pressureexceeds fourteen (14) inches (356 mm 3.5 kPa) or less thansix (6) inches (152 mm 1.5 kPa) of water column, or whenwhere diversity demand factors are used, the design, pipe, siz-ing, materials, location, and use of such systems first shall beapproved by the Authority Having Jurisdiction. Piping sys-tems designed for pressures exceeding the serving gas sup-plier's standard delivery pressure shall have prior verificationfrom the gas supplier of the availability of the design pressure.


FUEL PIPING

D =( )∆H

Cr x L

Q0.381

0.20619.17

D = Q0.381

0.20618.93[ ](P1

2 – P22) • Y

Cr x L

FORMULA FACTORS GAS Cr YNatural Gas 0.6094 0.9992Undiluted Propane 1.2462 0.9910

TABLE 12-4 1216.3Cr AND Y FOR NATURAL GAS AND UNDILUTED PROPANE AT

STANDARD CONDITIONS [NFPA 54: TABLE 6.4.2]

For SI units: 1 ft.3 cubic foot = 0.0283 m3, 1 foot = 0.3054.8mm, 1 inch watercolumn = 0.249 kPa, 1 psi pound-force per square inch = 6.894 kPa, 1,000Btu/h British thermal units per hour = 0.293 kW.

190 UNIFORM PLUMBING CODE

FUEL PIPING

FIGURE 12-2 1216.1.1 EXAMPLE ILLUSTRATING USE OF TABLES 12-1 1208.4.2 AND 12-8 1216.2(1)Problem: Determine the required pipe size of each section and outlet of the piping system shown in Figure 12-2 1216.1.1. Gasto be used has a specific gravity of sixty-hundredths (0.60) and eleven-hundred (1,100) British thermal units (Btu) per cubicfoot (11.4 0.0114 Watt-hour/L kW/L), delivered at eight (8) inch (203 mm 1.9 kPa) water column pressure.

Solution:(1) Maximum gas demand of outlet A—

32 cubic feet per hour (0.215 L/sec.) (from Table 12-1 1208.4.2).Maximum gas demand of outlet B —3 cubic feet per hour (0.02 L/sec.) (from Table 12-1 1208.4.2).

Maximum gas demand of outlet C —59 cubic feet per hour (0.46 L/sec.) (from Table 12-1 1208.4.2).

Maximum gas demand of outlet D —136 cubic feet per hour (1.1 L/sec.) (150,000 Btu/hour [43,950 kW])divided by 1,100 Btu per cubic foot (11.4 Watt-hour/L 0.0114 kW/L)

(2) The length of pipe from the gas meter to the most remote outlet (outlet A) is 60 feet (18,288 mm).(3) Using the length in feet column row marked 60 feet (18,288 mm) in Table 12-8 1216.2(1):OutletA, supplying 32 cubic feet per hour (0.215 L/sec.), requires one-half (1⁄2) of an inch (15 mm) pipe. Section 1, supplyingoutlets A and B, or 35 cubic feet per hour (ft3/h)(0.27 L/s) (0.24 L/sec.) requires one-half (1⁄2) of an inch (15 mm) pipe.Section 2, supplying outlets A, B, and C, or 94 cubic feet per hour (0.74 L/sec.) requires three-quarters (3⁄4) of an inch (20mm) pipe.Section 3, supplying outlets A, B, C, and D, or 230 cubic feet per hour (1.809 L/sec.), requires one (1) inch (25 mm) pipe.

(4) Using the column marked 60 feet (18,288 mm) in Table 12-8 1216.2(1) (no column for actual length of 55 feet [16,764mm]:Outlet B supplying 3 cubic feet per hour (0.02 L/sec.), requires one-half (1⁄2) of an inch (15 mm) pipe.Outlet C, supplying 59 cubic feet per hour (0.46 L/sec.), requires one-half (1⁄2) of an inch (15 mm) pipe.

(5) Using the column marked 60 feet (18,288 mm) in Table 12-8 1216.2(1):Outlet D, supplying 136 cubic feet per hour (1.107 L/sec.), requires (3⁄4) of an inch (20 mm) pipe.

For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 cubic foot per hour = 0.00787 L/s

191UNIFORM PLUMBING CODE

FUEL PIPING

TABLE 12-8 1216.2(1)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(b)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column =0.249 kPaNotes:(1) All tTable entries are rounded to 3 significant digits.(2) NAmeans a flow of less than 10 cfh ft3/h (0.08 L/s).

GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.5 in w.c.

SPECIFIC GRAVITY: 0.60

PIPE SIZE (inch)NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4 5 6 8 10 12

ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938

LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

1020304050

172118958172

360247199170151

678466374320284

1390957768657583

209014301150985873

40202760222019001680

64004400353030202680

11 3007780625053504740

23 10015 90012 70010 9009660

41 80028 70023 00019 70017 500

67 60046 50037 30031 90028 300

139 00095 50076 70065 60058 200

252 000173 000139 000119 000106 000

399 000275 000220 000189 000167 000

60708090100

6560565250

137126117110104

257237220207195

528486452424400

791728677635600

15201400130012201160

24302230208019501840

42903950367034503260

87608050749070306640

15 80014 60013 60012 70012 000

25 60023 60022 00020 60019 500

52 70048 50045 10042 30040 000

95 70088 10081 90076 90072 600

152 000139 000130 000122 000115 000

125150175200250

4440373430

9283777163

173157144134119

355322296275244

532482443412366

1020928854794704

16301480136012701120

28902610241022401980

58905330491045604050

10 6009650888082607320

17 20015 60014 40013 40011 900

35 40032 10029 50027 50024 300

64 30058 30053 60049 90044 200

102 00092 30084 90079 00070 000

300350400450500

2725232221

5753494643

10899928682

221203189177168

331305283266251

638587546512484

1020935870816771

18001650154014401360

36703370314029402780

66306100568053305030

10 7009880919086208150

22 10020 30018 90017 70016 700

40 10036 90034 30032 20030 400

63 40058 40054 30050 90048 100

550600650700750

2019181717

4139383635

7874716866

159152145140135

239228218209202

459438420403389

732699669643619

12901240118011401090

26402520241023202230

47804560436041904040

77407380707067906540

15 90015 20014 50014 00013 400

28 90027 50026 40025 30024 400

45 70043 60041 80040 10038 600

8008509009501000

1616151514

3433323130

6361595856

130126122118115

195189183178173

375363352342333

598579561545530

10601020992963937

21602090202019601910

39003780366035503460

63206110593057605600

13 00012 60012 20011 80011 500

23 60022 80022 10021 50020 900

37 30036 10035 00034 00033 100

11001200130014001500

1413121211

2827262524

5351494745

1091041009693

164156150144139

316301289277267

503480460442426

890849813781752

18101730166015901530

32803130300028802780

53205070486046704500

10 90010 400998095909240

19 80018 90018 10017 40016 800

31 40030 00028 70027 60026 600

16001700180019002000

11111010NA

2322222120

4442414039

8986848179

134130126122119

258250242235229

411398386375364

727703682662644

14801430139013501310

26802590252024402380

43404200407039603850

89208630837081307910

16 20015 70015 20014 80014 400

25 60024 80024 10023 40022 700


FUEL PIPING

TABLE 1216.2(2)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(c)]

GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 3.0 in. w.c.SPECIFIC GRAVITY: 0.60

INTENDED USE: INITIAL SUPPLY PRESSURE OF 8.0 IN. W.C. OR GREATERPIPE SIZE (inch)

NOMINAL 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4ACTUAL ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

10 454 949 1787 3669 5497 10 588 16 875 29 832 43 67820 312 652 1228 2522 3778 7277 11 598 20 503 30 02030 250 524 986 2025 3034 5844 9314 16 465 24 10740 214 448 844 1733 2597 5001 7971 14 092 20 63250 190 397 748 1536 2302 4433 7065 12 489 18 28660 172 360 678 1392 2085 4016 6401 11 316 16 56970 158 331 624 1280 1919 3695 5889 10 411 15 24380 147 308 580 1191 1785 3437 5479 9685 14 18190 138 289 544 1118 1675 3225 5140 9087 13 305100 131 273 514 1056 1582 3046 4856 8584 12 568125 116 242 456 936 1402 2700 4303 7608 11 139150 105 219 413 848 1270 2446 3899 6893 10 093175 96 202 380 780 1169 2251 3587 6342 9285200 90 188 353 726 1087 2094 3337 5900 8638250 80 166 313 643 964 1856 2958 5229 7656300 72 151 284 583 873 1681 2680 4738 6937350 66 139 261 536 803 1547 2465 4359 6382400 62 129 243 499 747 1439 2294 4055 5937450 58 121 228 468 701 1350 2152 3804 5570500 55 114 215 442 662 1275 2033 3594 5262550 52 109 204 420 629 1211 1931 3413 4997600 50 104 195 400 600 1156 1842 3256 4767650 47 99 187 384 575 1107 1764 3118 4565700 46 95 179 368 552 1063 1695 2996 4386750 44 92 173 355 532 1024 1632 2886 4225800 42 89 167 343 514 989 1576 2787 4080850 41 86 162 332 497 957 1526 2697 3949900 40 83 157 322 482 928 1479 2615 3828950 39 81 152 312 468 901 1436 2539 37181000 38 79 148 304 455 877 1397 2470 36161100 36 75 141 289 432 833 1327 2346 34351200 34 71 134 275 412 794 1266 2238 32771300 33 68 128 264 395 761 1212 2143 31381400 31 65 123 253 379 731 1165 2059 30141500 30 63 119 244 366 704 1122 1983 29041600 29 61 115 236 353 680 1083 1915 28041700 28 59 111 228 342 658 1048 1854 27141800 27 57 108 221 331 638 1017 1797 26311900 27 56 105 215 322 619 987 1745 25552000 26 54 102 209 313 602 960 1698 2485

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column = 0.249kPaNote: Table entries are rounded to 3 significant digits.


FUEL PIPING


INTENDED USE: INITIAL SUPPLY PRESSURE OF 8.0 IN. W.C. OR GREATERPIPE SIZE (inch)

NOMINAL 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4ACTUAL ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

10 660 1380 2600 5338 7999 15 405 24 553 43 405 63 55120 454 949 1787 3669 5497 10 588 16 875 29 832 43 67830 364 762 1435 2946 4415 8502 13 551 23 956 35 07540 312 652 1228 2522 3778 7277 11 598 20 503 30 02050 276 578 1089 2235 3349 6449 10 279 18 172 26 60660 250 524 986 2025 3034 5844 9314 16 465 24 10770 230 482 907 1863 2791 5376 8568 15 147 22 17880 214 448 844 1733 2597 5001 7971 14 092 20 63290 201 420 792 1626 2437 4693 7479 13 222 19 359100 190 397 748 1536 2302 4433 7065 12 489 18 286125 168 352 663 1361 2040 3928 6261 11 069 16 207150 153 319 601 1234 1848 3559 5673 10 029 14 684175 140 293 553 1135 1700 3275 5219 9227 13 509200 131 273 514 1056 1582 3046 4856 8584 12 568250 116 242 456 936 1402 2700 4303 7608 11 139300 105 219 413 848 1270 2446 3899 6893 10 093350 96 202 380 780 1169 2251 3587 6342 9285400 90 188 353 726 1087 2094 3337 5900 8638450 84 176 332 681 1020 1965 3131 5535 8105500 80 166 313 643 964 1856 2958 5229 7656550 76 158 297 611 915 1762 2809 4966 7271600 72 151 284 583 873 1681 2680 4738 6937650 69 144 272 558 836 1610 2566 4537 6643700 66 139 261 536 803 1547 2465 4359 6382750 64 134 252 516 774 1490 2375 4199 6148800 62 129 243 499 747 1439 2294 4055 5937850 60 125 235 483 723 1393 2220 3924 5745900 58 121 228 468 701 1350 2152 3804 5570950 56 118 221 454 681 1311 2090 3695 54101000 55 114 215 442 662 1275 2033 3594 52621100 52 109 204 420 629 1211 1931 3413 49971200 50 104 195 400 600 1156 1842 3256 47671300 47 99 187 384 575 1107 1764 3118 45651400 46 95 179 368 552 1063 1695 2996 43861500 44 92 173 355 532 1024 1632 2886 42251600 42 89 167 343 514 989 1576 2787 40801700 41 86 162 332 497 957 1526 2697 39491800 40 83 157 322 482 928 1479 2615 38281900 39 81 152 312 468 901 1436 2539 37182000 38 79 148 304 455 877 1 397 2 470 3616

TABLE 1216.2(3)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(d)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column =0.249 kPaNote: Table entries are rounded to 3 significant digits.


FUEL PIPING

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPaNote: All tTable entries are rounded to 3 significant digits.

TABLE 12-9 1216.2(4)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(ce)]

GAS: NATURALINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 0.60

PIPE SIZE (inch)NOMINAL: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH(feet.) CAPACITY IN CUBIC FEET OF GAS PER HOUR

1020304050

15101070869753673

30402150176015201360

55603930321027802490

11 4008070659057105110

17 10012 100988085507650

32 90023 30019 00016 50014 700

52 50037 10030 30026 30023 500

92 80065 60053 60046 40041 500

189 000134 000109 00094 70084 700

60708090100

615569532502462

1240115010801010934

22702100197018501710

46604320404038103510

69806470605057005260

13 50012 50011 70011 00010 100

21 40019 90018 60017 50016 100

37 90035 10032 80030 90028 500

77 30071 60067 00063 10058,200

125150175200250

414372344318279

836751695642583

15301370127011701040

31402820260124102140

47004220391036103210

90608130753069606180

14 40013 00012 00011 1009850

25 50022 90021 20019 60017 400

52 10046 70043 30040 00035 500

300350400450500

253232216203192

528486452424401

945869809759717

19401790166015601470

29102670249023302210

56005150479045004250

89208210764071706770

15 80014 50013 50012 70012 000

32 20029 60027 50025 80024 400

550600650700750

182174166160154

381363348334322

681650622598576

14001330128012301180

20902000191018401770

40303850368035403410

64306130587056405440

11 40010 80010 40099709610

23 20022 10021 20020 30019 600

8008509009501000

149144139135132

311301292283275

556538522507493

11401100107010401010

17101650160015601520

32903190309030002920

52505080493047804650

92808980871084608220

18 90018 30017 80017 20016 800

11001200130014001500

125119114110106

262250239230221

468446427411396

960917878843812

14401370132012601220

27702640253024302340

44204220404038803740

78107450714068606600

15 90015 20014 60014 00013 500

16001700180019002000

10299969391

214207200195189

382370358348339

784759736715695

11801140110010701040

22602190212020602010

36103490339032903200

63806170598058105650

13 00012 60012 20011 90011 500


FUEL PIPING

TABLE 12-10 1216.2(5)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(df)]




1020304050

2350162013001110985

49203380272023202060

92706370511043803880

19 00013 10010 50089907970

28 50019 60015 70013 50011 900

54 90037 70030 30025 90023 000

87 50060 10048 30041 30036 600

155 000106 00085 40073 10064 800

316 000217 000174 000149 000132 000

60708090100

892821764717677

18701720160015001420

35203230301028202670

72206640618058005470

10 8009950926086808200

20 80019 20017 80016 70015 800

33 20030 50028 40026 70025 200

58 70054 00050 20047 10044 500

120 000110 00010200096 10090 800

125150175200250

600544500465412

125011401050973862

23602140197018301620

48504400404037603330

72706590606056405000

14 00012 70011 70010 9009620

22 30020 20018 60017 30015 300

39 50035 70032 90030 60027 100

80 50072 90067 10062 40055 300

300350400450500

374344320300283

781719669627593

14701350126011801120

30202780259024302290

45304170387036403430

87208020746070006610

13 90012 80011 90011 20010 500

24 60022 60021 00019 70018 600

50 10046 10042 90040 20038 000

550600650700750

269257246236228

563537514494476

10601010969931897

21802080199019101840

32603110298028602760

62805990574055105310

10 0009550915087908470

17 70016 90016 20015 50015 000

36 10034 40033 00031 70030 500

8008509009501000

220213206200195

460445431419407

866838812789767

17801720167016201580

26602580250024302360

51304960481046704550

81807910767074507240

14 50014 00013 60013 20012 800

29 50028 50027 70026 90026 100

11001200130014001500

185177169162156

387369353340327

729695666640616

15001430137013101270

22402140205019701900

43204120394037903650

68906570629060405820

12 20011 60011 10010 70010 300

24 80023 70022 70021 80021 000

16001700180019002000

151146142138134

316306296288280

595576558542527

12201180115011101080

18301770172016701620

35303410331032103120

56205440527051204980

10 0009610932090508800

20 30019 60019 00018 40018 000


FUEL PIPING

TABLE 12-11 1216.2(6)SCHEDULE 40 METALLIC PIPE [NFPA 54-12: TABLE 6.2(eg)]




1020304050

31902250184015901430

64304550372032202880

11 8008320679058805260

24 20017 10014 00012 10010 800

36 20025 60020 90018 10016 200

69 70049 30040 30034 90031 200

111 00078 60064 20055 60049 700

196 000139 000113 00098 20087 900

401 000283 000231 000200 000179 000

60708090100

1300120011501060979

26302430233021501980

48004450426039203620

98609130854080507430

14 80013 70012 80012 10011 100

28 50026 40024 70023 20021 400

45 40042 00039 30037 00034 200

80 20074 30069 50065 50060 400

164 000151 000142 000134 000123 000

125150175200250

876786728673558

17701590147013601170

32402910269024902200

66405960552051004510

99508940827076506760

19 20017 20015 90014 70013 000

30 60027 40025 40023 50020 800

54 00048 50044 90041 50036 700

110 00098 90091 60084 70074 900

300350400450500

506465433406384

1060973905849802

19901830171016001510

40903760350032903100

61305640525049204650

11 80010 90010 10094808950

18 80017 30016 10015 10014 300

33 30030 60028 50026 70025 200

67 80062 40058 10054 50051 500

550600650700750

364348333320308

762727696669644

14401370131012601210

29502810269025902490

44204210403038803730

85008110777074607190

13 60012 90012 40011 90011 500

24 00022 90021 90021 00020 300

48 90046 60044 60042 90041 300

8008509009501000

298288279271264

622602584567551

11701130110010701040

24102330226021902130

36103490338032903200

69406720652063306150

11 10010 70010 40010 1009810

19 60018 90018 40017 80017 300

39 90038 60037 40036 40035 400

11001200130014001500

250239229220212

524500478460443

987941901866834

20301930185017801710

30302900277026602570

58405580534051304940

93208890851081807880

16 50015 70015 00014 50013 900

33 60032 00030 70029 50028 400

16001700180019002000

205198192186181

428414401390379

806780756734714

16501600155015101470

24802400233022602200

47704620448043504230

76107360714069306740

13 40013 00012 60012 30011 900

27 40026 50025 70025 00024 300


FUEL PIPING

TABLE 12-12 1216.2(7)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(fh)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column =0.249 kPa*Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.Notes:(1) All tTable entries are rounded to 3 significant digits.(2) NAmeans a flow of less than 10 cfh ft3/h (0.08 L/s).


TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959

LENGTH (feet.) CAPACITY IN CUBIC FEET OF GAS PER HOUR1020304050

20141110NA

4229232017

8558474035

148102827062

2101441169988

448308247211187

806554445381337

1270873701600532

26501820146012501110

60708090100

NANANANANA

1614131312

3229272624

5652484543

7973686460

170156145136129

306281262245232

482443413387366

1000924859806761

125150175200250

NANANANANA

1110NANANA

2220181715

3834312926

5348454137

114103958978

206186171159141

324294270251223

675612563523464

300350400450500

NANANANANA

NANANANANA

1312111110

2322201918

3331282725

7165615754

12811811010397

202186173162153

420387360338319

550600650700750

NANANANANA

NANANANANA

NANANANANA

1716151514

2423222120

5149474543

9288848178

145139133128123

303289277266256

8008509009501000

NANANANANA

NANANANANA

NANANANANA

1413131312

2019181817

4240393837

7573716967

119115111108105

247239232225219

11001200130014001500

NANANANANA

NANANANANA

NANANANANA

12111110NA

1616151414

3534323130

6360585654

10095918884

208199190183176

16001700180019002000

NANANANANA

NANANANANA

NANANANANA

NANANANANA

1313131212

2928272625

5250494746

8279777472

170164159155151


FUEL PIPING

TABLE 12-13 1216.2(8)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(gi)]


TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959


2718151311

5538302623

11177615347

1951341079282

276190152131116

590406326279247

1060730586502445

16801150925791701

34902400193016501460

60708090100

10NANANANA

2119181716

4239363432

7468635956

10596908479

224206192180170

403371345324306

635585544510482

13201220113010601000

125150175200250

NANANANANA

14131211NA

2826242220

5045413934

7064595548

151136125117103

271245226210186

427387356331294

890806742690612

300350400450500

NANANANANA

NANANANANA

1816151413

3128262523

4440383533

9486807571

169155144135128

266245228214202

554510474445420

550600650700750

NANANANANA

NANANANANA

1312121111

2221202019

3230292827

6864625957

122116111107103

192183175168162

399381365350338

8008509009501000

NANANANANA

NANANANANA

1010NANANA

1818171716

2625242423

5553525049

9996939088

156151147143139

326315306297289

11001200130014001500

NANANANANA

NANANANANA

NANANANANA

1515141313

2221201918

4644424139

8480767371

132126120116111

274262251241232

16001700180019002000

NANANANANA

NANANANANA

NANANANANA

1312121111

1817171616

3837363534

6866646260

1081041019895

224217210204199



FUEL PIPING

TABLE 12-14 1216.2(9)SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(hj)]



INTENDED USE: TUBE SIZING BETWEEN HOUSE LINE REGULATOR AND THE APPLIANCE.TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959


3927211816

8055443833

162111897768

283195156134119

402276222190168

859590474406359

15501060853730647

24401680135011501020

50803490280024002130

60708090100

1513131211

3028262423

6157534947

10799928682

152140131122116

326300279262247

586539502471445

925851791742701

19301770165015501460

125150175200250

NANANANANA

2018171614

4137343228

7265605650

10393857970

219198183170151

394357329306271

622563518482427

1290117010801000890

300350400450500

NANANANANA

13121110NA

2624222120

4541393634

6459555148

136125117110103

245226210197186

387356331311294

806742690647612

550600650700750

NANANANANA

NANANANANA

1918171616

3231302827

4644424039

9894908683

177169162155150

279266255245236

581554531510491

8008509009501000

NANANANANA

NANANANANA

1515141413

2626252423

3836353433

8078757371

144140135132128

228220214207202

474459445432420

11001200130014001500

NANANANANA

NANANANANA

1312121111

2221202019

3230292827

6864625957

122116111107103

192183175168162

399381365350338

16001700180019002000

NANANANANA

NANANANANA

1010NANANA

1818171716

2625242423

5553525049

9996939088

156151147143139

326315306297289


FUEL PIPING


TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959


1901301059079

391269216185164

796547439376333

1390956768657582

197013601090932826

42202900233019901770

75905220419035903180

12 0008230661056505010

24 90017 10013 80011 80010 400

60708090100

7266625855

148137127119113

302278258243229

528486452424400

749689641601568

16001470137012801210

28802650246023102180

45404180389036503440

94608700809075907170

125150175200250

4844403833

10090837769

203184169157140

355321296275244

503456420390346

1080974896834739

19401750161015001330

30502770254023702100

63605760530049304370

300350400450500

3028262423

6257535047

12611610810296

221203189177168

313288268252238

670616573538508

121011101030968914

19001750163015301440

39603640339031803000

550600650700750

2221201918

4543413938

9187838077

159152145140135

226215206198191

482460441423408

868829793762734

13701310125012001160

28502720261025002410

8008509009501000

1817171616

3735343332

7472706866

130126122118115

184178173168163

394381370359349

709686665646628

1120108010501020991

23302250218021202060

11001200130014001500

1514141313

3129282726

6360575553

1091041009693

155148142136131

332316303291280

597569545524505

941898860826796

19601870179017201660

16001700180019002000

1212111111

2524242322

5149484745

8986848179

127123119115112

271262254247240

487472457444432

768744721700681

16001550150014601420

TABLE 12-15 1216.2(10)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(ik)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column =0.249 kPa*Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.Note:All tTable entries are rounded to 3 significant digits.


FUEL PIPING

TABLE 12-16 1216.2(11)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(jl)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa*Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.Note:All tTable entries are rounded to 3 significant digits.


TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959


245169135116103

506348279239212

1030708568486431

18001240993850754

25501760141012101070

54503750301025802280

98206750542046404110

15 50010 600855073106480

32 20022 20017 80015 20013 500

60708090100

9386807571

192177164154146

391359334314296

683628584548518

969891829778735

20701900177016601570

37303430319029902830

58705400503047204450

12 20011 30010 50098209280

125150175200250

6357524943

12911710810089

263238219204181

459416383356315

651590543505448

1390126011601080956

25002270209019401720

39503580329030602710

82207450685063805650

300350400450500

3936333130

8074696561

164150140131124

286263245230217

406373347326308

866797741696657

15601430133012501180

24602260210019701870

51204710438041103880

550600650700750

2827262524

5855535149

118112108103100

206196188181174

292279267256247

624595570548528

112010701030986950

17701690162015501500

36903520337032403120

8008509009501000

2322222120

4746444342

9693908885

168163158153149

239231224217211

510493478464452

917888861836813

14501400136013201280

30102920283027402670

11001200130014001500

1918181716

4038363534

8177747168

142135129124120

201192183176170

429409392376363

772737705678653

12201160111010701030

25402420232022302140

16001700180019002000

1615151414

3331303029

6664626059

116112108105102

164159154149145

350339329319310

630610592575559

994962933906881

20702000194018901830


FUEL PIPING

TABLE 12-17 1216.2(12)SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(km)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa*1 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.†2 WhenWhere this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall besized using a pressure drop no greater than 1 in. w.c. inch water column (0.249 kPa)

Note: All tTable entries are rounded to 3 significant digits.


INTENDED USE: PIPE SIZING BETWEEN POINT OF DELIVERY AND THE HOUSE LINE REGULATOR. TOTAL LOAD SUPPLIED BY ASINGLE HOUSE LINE REGULATOR NOT EXCEEDING 150 CUBIC FEET PER HOUR.†2

TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125

INSIDE:*1 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959LENGTH (feet.) CAPACITY IN CUBIC FEET OF GAS PER HOUR

1020304050

303208167143127

625430345295262

1270874702601532

2220153012301050931

31502170174014901320

67404630372031802820

12 1008330669057305080

19 10013 10010 60090308000

39 80027 40022 00018 80016 700

60708090100

115106989287

237218203190180

482444413387366

843776722677640

120011001020961907

25602350219020501940

46004230394036903490

72506670621058205500

15 10013 90012 90012 10011 500

125150175200250

7770646053

159144133124110

324294270252223

567514472440390

804729670624553

17201560143013301180

30902800258024002130

48804420406037803350

10 2009200846078706980

300350400450500

4844413936

9991858075

202186173162153

353325302283268

501461429402380

1070984916859811

19301770165015501460

30402790260024402300

63205820541050804800

550600650700750

3533323029

7268656360

146139133128123

254243232223215

361344330317305

771735704676652

13901320127012201170

21902090200019201850

45604350416040003850

8008509009501000

2827272625

5857555352

119115111108105

208201195189184

295285276268261

629609590573558

11301100106010301000

17901730168016301580

37203600349033903300

11001200130014001500

2423222120

4947454342

10095918885

175167160153148

248237227218210

530505484465448

954910871837806

15001430137013201270

31302990286027502650

16001700180019002000

1919181817

4039383736

8279777472

143138134130126

202196190184179

432419406394383

779753731709690

12301190115011201090

25602470240023302270


FUEL PIPING


TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959


511351282241214

1050724582498441

2140147011801010898

37502580207017701570

53203650293025102230

11 4007800627053604750

20 40014 00011 30096608560

32 20022 20017 80015 20013 500

67 10046 10037 00031 70028 100

60708090100

194178166156147

400368342321303

813748696653617

14201310122011401080

20201860173016201530

43103960369034603270

77507130664062305880

12 20011 20010 50098209270

25 50023 40021 80020 40019 300

125150175200250

13011810910190

269243224208185

547495456424376

955866796741657

1360123011301050932

29002620241022501990

52104720435040403580

82207450685063705650

17 10015 50014 30013 30011 800

300350400450500

8175696562

167154143134127

340313291273258

595547509478451

844777722678640

18001660154014501370

32502990278026102460

51204710438041103880

10 7009810912085608090

550600650700750

5856535149

121115110106102

245234224215207

429409392376362

608580556534514

13001240119011401100

23402230214020501980

36903520337032403120

76807330702067406490

8008509009501000

4846454342

9895929087

200194188182177

350339328319310

497481466452440

106010301000967940

19101850179017401690

30102910282027402670

62706070588057105560

11001200130014001500

4038373534

8379767370

169161154148143

295281269259249

418399382367353

893852816784755

16101530147014101360

25302420232022202140

52805040482046304460

16001700180019002000

3332313029

6865636260

138133129125122

241233226219213

341330320311302

729705684664646

13101270123012001160

20702000194018901830

43104170404039303820

TABLE 12-18 1216.2(13)SEMI-RIGID COPPER TUBING [NFPA 54-12: TABLE 6.2(ln)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa*Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.Note: All tTable entries are rounded to 3 significant digits.


FUEL PIPING

TABLE 12-19 1216.2(14)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(mo)]

For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column = 0.249 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, thegreater the gas capacity of the tubing.Notes:(1) Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, and/or fittings, or both shall be in-creased by an equivalent length of tubing to the following equation: L = 1.3n, where L is additional length (ft) of tubing and n is the number of additional fit-tings, and/or bends, or both.

(2) All tTable entries are rounded to 3 significant digits.


TUBE SIZE (EHD)*FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62

LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR510152025

4632252219

6344353127

11582665852

13495776760

225161132116104

270192157137122

471330267231206

546383310269240

895639524456409

1037746615536482

179012601030888793

2070147012001050936

36602600214018501660

41402930240020801860

30405060

18151312

25211917

47413734

55474238

96837568

112978780

188162144131

218188168153

374325292267

442386347318

723625559509

856742665608

1520132011801080

1700147013201200

708090100

1110109

16151413

31292826

36333230

63605754

74696562

121113107101

141132125118

248232219208

295277262249

471440415393

563527498472

1000940887843

11101040983933

150200250300

7655

10987

20181615

23211917

42383432

48443936

78716357

91827467

17114813395

205179161148

320277247226

387336301275

691600538492

762661591540


FUEL PIPING

For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column = 0.249 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, thegreater the gas capacity of the tubing.Notes:(1) Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, and/or fittings, or both shall be in-creased by an equivalent length of tubing to the following equation: L = 1.3n, where L is additional length (ft) of tubing and n is the number of additional fit-tings, and/or bends, or both.


TABLE 12-20 1216.2(15)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(np)]


INTENDED USE: INITIAL SUPPLY PRESSURE OF 8.0 INCH WATER COLUMN OR GREATER.TUBE SIZE (EHD)*

FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 46 48 60 62LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

510152025

12083675751

160112907869

277197161140125

327231189164147

529380313273245

649462379329295

1180828673580518

1370958778672599

2140153012501090978

44303200254022001960

50103560291025302270

88006270514044604000

10 1007160585050704540

30405060

46393532

63544844

1151008982

13411610495

225196176161

270234210192

471407363330

546471421383

895778698639

1790155013801260

2070180016101470

3660318028502600

4140359032102930

708090100

29272624

41383634

76716763

88827773

150141133126

178167157149

306285268254

355331311295

593555524498

117010901030974

1360128012001140

2420226021402030

2720254024002280

150200250300

19171513

27232119

52454037

60524642

104918275

1221069587

206178159144

240207184168

409355319234

793686613559

936812728665

1660144012901180

1860161014401320


FUEL PIPING

TABLE 12-21 1216.2(16)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(oq)]

For SI units: 1 foot = 304.8 mm 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column = 0.249 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD,the greater the gas capacity of the tubing.Notes:(1) Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, and/or fittings, or both shall be in-

creased by an equivalent length of tubing to the following equation: L = 1.3n, where L is additional length (ft) of tubing and n is the number of additionalfittings, and/or bends, or both.



INTENDED USE: INITIAL SUPPLY PRESSURE OF 11.0 INCH WATER COLUMN OR GREATER.TUBE SIZE (EHD)*

FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 46 48 60 62LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

510152025

173120968374

22916013011299

389277227197176

461327267231207

737529436380342

911649532462414

16901180960828739

195013701110958855

30002140176015301370

62804430361031202790

70505010410035603190

12 4008800721062705620

14 26010 100826071606400

30405060

67575146

90786963

161140125115

189164147134

313273245225

379329295270

673580518471

778672599546

12501090978895

2540220019601790

2910253022702070

5140446040003660

5850507045404140

708090100

42393735

58545148

1061009489

124116109104

209196185176

250234221210

435407383363

505471444421

830778735698

1660155014601380

1920180017001610

3390318030002850

3840359033903210

150200250300

28242119

39343027

73635752

85736660

145126114104

172149134122

294254226206

342295263240

573498447409

1130974870793

132011401020936

2340203018201660

2630228020401860


FUEL PIPING

For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, thegreater the gas capacity of the tubing.Notes:(1) Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 3⁄4 0.75 psi (5.17 kPa), do not use this table. Consult with

regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary are capable of varying with flow rate.(2) CAUTION: Capacities shown in table may exceed are capable of exceeding the maximum capacity for a selected regulator. Consult with regulator or tubing

manufacturer for guidance.(3) Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, and/or fittings, or both shall be increased

by an equivalent length of tubing according to the following equation: L = 1.3n, where L is additional length (ft) of tubing and n is the number of additional fit-tings, and/or bends, or both.


TABLE 12-22 1216.2(17)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(pr)]




270166151129115

353220200172154

587374342297266

700444405351314

1100709650567510

1370876801696624

25901620148012701140

29901870170014701310

45102890264023002060

50373258298726052343

96006040551047604260

10 7006780620053804820

18 60011 90010 90094408470

21 60013 70012 50010 9009720

7580100150200

9389796455

1241201078775

218211189155135

257249222182157

420407366302263

512496445364317

922892795646557

10701030920748645

16901640147012101050

19321874168513891212

34703360300024402110

39503820342028002430

69406730603049404290

79407690688056204870

250300400500

49443834

67615246

1211109686

141129111100

236217189170

284260225202

497453390348

576525453404

941862749552

1090999871783

1890172014901330

2180199017301550

3850352030602740

4360398034503090


FUEL PIPING




523322292251223

674420382329293

1080691632549492

1300827755654586

2000129011801030926

25301620148012801150

49203080280024202160

56603540323027902490

83005310486042303790

91405911542047274251

18 10011 4001040089708020

19 80012 60011 50010 0008930

34 40022 00020 10017 40015 600

40 40025 60023 40020 20018 100

7580100150200

180174154124107

238230205166143

403391350287249

479463415339294

763740665548478

944915820672584

17501690151012301060

20201960174014201220

31103020271022201930

35063400305725212199

65306320565046003980

73207090635052004510

12 80012 40011 10091307930

14 80014 30012 80010 5009090

250300400500

95867466

12811610089

223204177159

263240208186

430394343309

524479416373

945860742662

1090995858766

1730159013801040

1977181315811422

3550324028002500

4040369032102870

7110650056505060

8140743064405760

For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, thegreater the gas capacity of the tubing.Notes:(1) Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 1 psi (6.89 kPa), do not use this table. Consult with regu-lator manufacturer for pressure drops and capacity factors. Pressure drops across regulator may vary are capable of varying with the flow rate.

(2) CAUTION: Capacities shown in table may exceed are capable of exceeding the maximum capacity of selected regulator. Consult tubing manufacturer for guid-ance.

(3) Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, and/or fittings, or both shall be increasedby an equivalent length of tubing to the following equation: L = 1.3n, where L is additional length (ft) of tubing and n is the number of additional fittings, and/orbends, or both.


TABLE 12-23 1216.2(18)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-12: TABLE 6.2(qs)]


FUEL PIPING


PIPE SIZE (inch)NOMINAL OD: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 3 4DESIGNATION: SDR 9.33 SDR 11.00 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

1020304050

153105847264

305210169144128

551379304260231

955656527451400

1440991796681604

25901780143012201080

71704920395033803000

13 9009520764065405800

60708090100

5853504644

116107999388

209192179168159

362333310291275

547503468439415

983904841789745

27202500233021802060

52504830450042203990

125150175200250

3935323027

7871656054

14112711710997

243221203189167

368333306285253

661598551512454

18301660152014201260

35303200294027402430

300350400450500

2422211918

4845423937

8881757066

152139130122115

229211196184174

411378352330312

11401050974914863

22002020188017701670

TABLE 12-24 1216.2(19)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.2(rt)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column = 0.249 kPaNote: All tTable entries are rounded to 3 significant digits.


FUEL PIPING

TABLE 12-25 1216.2(20)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.2(su)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water column = 0.249 kPaNote: All tTable entries are rounded to 3 significant digits.

GAS: NATURALINLET PRESSURE: LESS THAN 2 psiPRESSURE DROP: 0.5 in. w.c.SPECIFICGRAVITY: 0.60


1020304050

2011381119584

403277222190169

726499401343304

1260865695594527

190013101050898796

34102350188016101430

94506490521044603950

18 26012 55010 08086307640

60708090100

7670656158

153140131123116

276254236221209

477439409383362

721663617579547

1300119011101040983

35803300307028802720

69306370593055605250

125150175200250

5146434035

10393868071

185168154144127

321291268249221

485439404376333

871789726675598

24102180201018701660

46604220388036103200

300350400450500

3229272624

6459555148

115106999388

200184171160152

302278258242229

542499464435411

15001380128012001140

29002670248023302200


FUEL PIPING

GAS: NATURALINLET PRESSURE: 2.0 psiPRESSURE DROP: 1.0 psiSPECIFICGRAVITY: 0.60


1020304050

186012801030878778

37202560205017601560

67104610371031702810

11 6007990642054904870

17 60012 100969083007350

31 60021 70017 40014 90013 200

87 30060 00048 20041 20036 600

169 000116 00093 20079 70070 700

60708090100

705649603566535

4101300121011301070

25502340218020501930

44104060378035403350

66606130570053505050

12 00011 00010 20096109080

33 10030 50028 30026 60025 100

64 00058 90054 80051 40048 600

125150175200250

474429395368326

949860791736652

17101550143013301180

29702690247023002040

44804060373034703080

80507290671062405530

22 30020 20018 60017 30015 300

43 00039 00035 90033 40029 600

300350400450500

295272253237224

591544506475448

1070981913856809

18501700158014801400

27902570239022402120

50104610429040203800

13 90012 80011 90011 10010 500

26 80024 70022 90021 50020 300

550600650700750

213203194187180

426406389374360

768733702674649

13301270122011701130

20101920184017601700

36103440330031703050

99909530913087708450

19 30018 40017 60016 90016 300

8008509009501000

174168163158154

348336326317308

627607588572556

109010501020990963

16401590154015001450

29502850277026902610

81607890765074307230

15 80015 30014 80014 40014 000

11001200130014001500

146139134128124

293279267257247

528504482463446

915873836803773

13801320126012101170

24802370227021802100

68706550627060305810

13 30012 70012 10011 60011 200

16001700180019002000

119115112109106

239231224218212

431417404393382

747723701680662

11301090106010301000

20301960190018501800

56105430526051104970

10 80010 50010 20099009600

TABLE 12-26 1216.2(21)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.2(tv)]



FUEL PIPING

GAS: NATURALINLET PRESSURE: LESS THAN 2.0 psiPRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 0.60PLASTIC TUBING SIZE (CTS)* (inch)

NOMINAL OD: 1⁄2 3⁄4DESIGNATION: SDR 7.00 SDR 11.00ACTUAL ID: 0.445 0.927LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

1020304050

7249393430

490337271232205

60708090100

2725232221

186171159149141

125150175200

18171514

12511310497

225250275300

13121111

91868278

350400450500

10NANANA

72676359

TABLE 12-27 1216.2(22)POLYETHYLENE PLASTIC TUBING [NFPA 54-12: TABLE 6.2(uw)]

TABLE 12-28 1216.2(23)POLYETHYLENE PLASTIC TUBING [NFPA 54-12: TABLE 6.2(vx)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour =0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water col-umn = 0.249 kPa* CTS = Copper tube size.Notes:(1) All tTable entries are rounded to 3 significant digits.(2) NAmeans a flow of less than 10 cfh ft3/h (0.08 L/s).

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour =0.00787 L/s, 1 pound-force per square inch = 6.894 kPa, 1 inch water col-umn = 0.249 kPa* CTS = Copper tube size.Notes:(1) All tTable entries are rounded to 3 significant digits.(2) NAmeans a flow of less than 10 cfh ft3/h (0.08 L/s).

GAS: NATURALINLET PRESSURE: LESS THAN 2.0 psiPRESSURE DROP: 0.3 in. w.c.SPECIFIC GRAVITY: 0.60PLASTIC TUBING SIZE (CTS)* (inch)

NOMINAL OD: 1⁄2 3⁄4DESIGNATION: SDR 7.00 SDR 11.00ACTUAL ID: 0.445 0.927LENGTH (feet) CAPACITY IN CUBIC FEET OF GAS PER HOUR

1020304050

5437302623

372256205176156

60708090100

2119181716

141130121113107

125150175200

14131211

95867974

225250275300

10NANANA

69656259

350400450500

NANANANA

54514745


FUEL PIPING

TABLE 12-29 1216.2(24)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(a)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPaNote: All tTable entries are rounded to 3 significant digits.

GAS: UNDILUTED PROPANEINLET PRESSURE: 10.0 psiPRESSURE DROP: 1.0 psiSPECIFIC GRAVITY: 1.50

INTENDED USE: PIPE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE REGULATOR) AND SECOND STAGE (LOW PRESSURE REGULATOR).PIPE SIZE (inch)

NOMINALINSIDE:

1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4

ACTUAL: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH (feet.) CAPACITY IN THOUSANDS OF BTU PER HOUR

1020304050

33202280183015701390

69504780384032802910

13 1009000722061805480

26 90018 50014 80012 70011 300

40 30027 70022 20019 00016 900

77 60053 30042 80036 60032 500

124 00085 00068 20058 40051 700

219 000150 000121 000103 00091 500

446 000306 000246 000211 000187 000

60708090100

1260116010801010956

26402430226021202000

49704570425039903770

10 2009380873081907730

15 30014 10013 10012 30011 600

29 40027 10025 20023 60022 300

46 90043 10040 10037 70035 600

82 90076 30070 90066 60062 900

169 000156 000145 000136 000128 000

125150175200250

848768706657582

17701610148013701220

33403020278025902290

68506210571053204710

10 3009300856079607060

19 80017 90016 50015 30013 600

31 50028 60026 30024 40021 700

55 70050 50046 50043 20038 300

114 000103 00094 70088 10078 100

300350400450500

528486452424400

11001020945886837

20801910178016701580

42703930365034303240

64005880547051404850

12 30011 30010 50098909340

19 60018 10016 80015 80014 900

34 70031 90029 70027 90026 300

70 80065 10060 60056 80053 700

550600650700750

380363347334321

795759726698672

15001430137013101270

30702930281027002600

46104400421040403900

88708460811077907500

14 10013 50012 90012 40012 000

25 00023 90022 80021 90021 100

51 00048 60046 60044 80043 100

8008509009501000

310300291283275

649628609592575

12201180115011101080

25102430236022902230

37603640353034303330

72407010680066006420

11 50011 20010 80010 50010 200

20 40019 80019 20018 60018 100

41 60040 30039 10037 90036 900

11001200130014001500

261249239229221

546521499480462

1030982940903870

21102020193018501790

31703020289027802680

61005820557053505160

97209270888085308220

17 20016 40015 70015 10014 500

35 00033 40032 00030 80029 600

16001700180019002000

213206200194189

446432419407395

840813789766745

17301670162015701530

25902500243023602290

49804820467045404410

79407680745072307030

14 00013 60013 20012 80012 400

28 60027 70026 90026 10025 400


FUEL PIPING


INTENDED USE: PIPE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE REGULATOR) AND SECOND STAGE (LOW PRESSURE REGULATOR).PIPE SIZE (inch)

NOMINALINSIDE:

1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4

ACTUAL: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH (feet.) CAPACITY IN THOUSANDS OF BTU PER HOUR

1020304050

58904050325027802460

12 3008460679058105150

23 20015 90012 80011 0009710

47 60032 70026 30022 50019 900

71 30049 00039 40033 70029 900

137 00094 40075 80064 90057 500

219 000150 000121 000103 00091 600

387 000266 000214 000183 000162 000

789 000543 000436 000373 000330 000

60708090100

22302050191017901690

46704300400037503540

87908090753070606670

18 10016 60015 50014 50013 700

27 10024 90023 20021 70020 500

52 10047 90044 60041 80039 500

83 00076 40071 10066 70063 000

147 000135 000126 000118 000111 000

299 000275 000256 000240 000227 000

125150175200250

15001360125011601030

31402840262024302160

59105360493045804060

12 10011 00010 10094108340

18 20016 50015 20014 10012 500

35 00031 70029 20027 20024 100

55 80050 60046 50043 30038 400

98 70089 40082 30076 50067 800

201 000182 000167 800156 100138 400

300350400450500

935860800751709

19501800167015701480

36803390315029602790

75606950647060705730

11 30010 400969090908590

21 80020 10018 70017 50016 500

34 80032 00029 80027 90026 400

61 50056 50052 60049 40046 600

125 400115 300107 300100 70095 100

550600650700750

673642615591569

14101340129012401190

26502530242023302240

54505200498047804600

81607780745071606900

15 70015 00014 40013 80013 300

25 00023 90022 90022 00021 200

44 30042 20040 50038 90037 400

90 30086 20082 50079 30076 400

8008509009501000

550532516501487

11501110108010501020

21702100203019701920

44504300417040503940

66606450625060705900

12 80012 40012 00011 70011 400

20 50019 80019 20018 60018 100

36 20035 00033 90032 90032 000

73 70071 40069 20067 20065 400

11001200130014001500

463442423406391

968923884849818

18201740167016001540

37403570342032803160

56105350512049204740

10 80010 300987094809130

17 20016 40015 70015 10014 600

30 40029 00027 80026 70025 700

62 10059 20056 70054 50052 500

16001700180019002000

378366355344335

790765741720700

14901440140013601320

30602960287027802710

45804430430041704060

88208530827080407820

14 10013 60013 20012 80012 500

24 80024 00023 30022 60022 000

50 70049 00047 60046 20044 900

TABLE 12-30 1216.2(25)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(b)]

For SI units:1 inch = 25 mm 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPaNote: All tTable entries are rounded to 3 significant digits.


FUEL PIPING

TABLE 12-31 1216.2(26)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(c)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPaNote: All tTable entries are rounded to 3 significant digits.


INTENDED USE: PIPE SIZING BETWEEN 2 PSI SERVICE AND LINE PRESSURE REGULATORPIPE SIZE (inch)

NOMINAL 1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4

ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH (feet.) CAPACITY IN THOUSANDS OF BTU PER HOUR

1020304050

26801840148012601120

55903850309026402340

10 5007240582049804410

21 60014 90011 90010 2009060

32 40022 30017 90015 30013 600

62 40042 90034 50029 50026 100

99 50068 40054 90047 00041 700

176 000121 00097 10083 10073 700

359 000247 000198 000170 000150 000

60708090100

1010934869815770

21201950182017001610

40003680342032103030

82107550702065906230

12 30011 30010 50098809330

23 70021 80020 30019 00018 000

37 70034 70032 30030 30028 600

66 70061 40057 10053 60050 600

136 000125 000116 000109 000103 000

125150175200250

682618569529469

1430129011901110981

26902440224020801850

55205000460042803790

82707490689064105680

15 90014 40013 30012 30010 900

25 40023 00021 20019 70017 400

44 90040 70037 40034 80030 800

91 50082 90076 30071 00062 900

300350400450500

425391364341322

889817760714674

16701540143013401270

34403160294027602610

51504740441041303910

99209120849079607520

15 80014 50013 50012 70012 000

27 90025 70023 90022 40021 200

57 00052 40048 80045 80043 200

550600650700750

306292280269259

640611585562541

12101150110010601020

24802360226021702090

37103540339032603140

71406820653062706040

11 40010 90010 40099909630

20 10019 20018 40017 70017 000

41 10039 20037 50036 00034 700

8008509009501000

250242235228222

523506490476463

985953924897873

20201960190018401790

30302930284027602680

58305640547053105170

93009000872084708240

16 40015 90015 40015 00014 600

33 50032 40031 50030 50029 700

11001200130014001500

210201192185178

440420402386372

829791757727701

17001620155014901440

25502430233022402160

49104680449043104150

78307470715068706620

13 80013 20012 60012 10011 700

28 20026 90025 80024 80023 900

16001700180019002000

172166161157152

359348337327318

677655635617600

13901340130012701230

20802010195019001840

40103880376036503550

63906180600058205660

11 30010 90010 60010 30010 000

23 00022 30021 60021 00020 400


FUEL PIPING

TABLE 12-32 1216.2(27)SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(d)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPaNote: All tTable entries are rounded to 3 significant digits.

GAS: UNDILUTED PROPANEINLET PRESSURE: 11.0 in. w.c.PRESSURE DROP: 0.5 in. w.c.SPECIFIC GRAVITY: 1.50

INTENDED USE: PIPE SIZING BETWEEN SINGLE OR SECOND STAGE (LOW PRESSURE REGULATOR) AND APPLIANCEPIPE SIZE (inch)

NOMINALINSIDE:

1⁄2 3⁄4 1 11⁄4 11⁄2 2 21⁄2 3 4

ACTUAL ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026LENGTH (feet.) CAPACITY IN THOUSANDS OF BTU PER HOUR

1020304050

291200160137122

608418336287255

1150787632541480

2350162013001110985

35202420194016601480

67904660375032102840

10 8007430597051104530

19 1001310010 60090308000

39 00026 80021 50018 40016 300

6080100125150

110101948984

231212197185175

434400372349330

892821763716677

13401230114010701010

25702370220020701950

41003770351032903110

72506670621058205500

14 80013 60012 70011 90011 200

175200250300350

7467625851

155140129120107

292265243227201

600543500465412

899814749697618

17301570144013401190

27602500230021401900

48804420406037803350

99509010829077106840

400450500550600

4642403735

9789837873

182167156146138

373344320300283

560515479449424

1080991922865817

17201580147013801300

30402790260024402300

61905700530049704700

650700750800850

3332302928

7066646159

131125120115111

269257246236227

403385368354341

776741709681656

12401180113010901050

21902090200019201850

44604260408039203770

900950100011001200

2726252524

5755535250

1071041009795

220213206200195

329319309300292

634613595578562

1010978948921895

17901730168016301580

36403530342033203230

13001400150016001700

2322212019

4846444240

9086827976

185176169162156

277264253243234

534509487468451

850811777746719

15001430137013201270

30702930280026902590

180019002000

191818

393837

747169

151146142

226219212

436422409

694672652

123011901150

250024202350


FUEL PIPING

TABLE 12-33 1216.2(28)SEMI-RIGID COPPER TUBING [NFPA 54-09: TABLE 6.3(e)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPa*Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.Note: All tTable entries are rounded to 3 significant digits.


INTENDED USE: TUBE SIZING BETWEEN FIRST STAGE (HIGH PRESSURE) REGULATORAND SECOND STAGE (LOW PRESSURE) REGULATOR.TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959

LENGTH (feet.) CAPACITY IN THOUSANDS OF BTU PER HOUR1020304050

513352283242215

1060727584500443

2150148011901020901

37602580208017801570

53303670294025202230

11 4007830629053804770

20 50014 10011 30096908590

32 30022 20017 90015 30013 500

67 40046 30037 20031 80028 200

60708090100

194179166156147

401369343322304

816751699655619

14301310122011501080

20201860173016301540

43203980370034703280

77807160666062505900

12 30011 30010 50098509310

25 60023 50021 90020 50019 400

125150175200250

13111810910190

270244225209185

549497457426377

959869799744659

1360123011301060935

29102630242022502000

52304740436040603600

82507470688064005670

17 20015 60014 30013 30011 800

300350400450500

8175706562

168155144135127

342314292274259

597549511480453

847779725680643

18101660155014501370

32603000279026202470

51404730440041303900

10 7009840916085908120

550600650700750

5956545150

121115111106102

246235225216208

430410393378364

610582558536516

13001240119011401100

23502240214020601980

37003530338032503130

77107350704067706520

8008509009501000

4846454442

9996939088

201195189183178

351340330320311

498482468454442

106010301000970944

19201850180017501700

30202920284027502680

62906090591057305580

11001200130014001500

4038373534

8379767370

169161155148143

296282270260250

420400383368355

896855819787758

16101540147014201360

25402430232022302150

53005050484046504480

16001700180019002000

3332313029

6866646260

138134130126122

241234227220214

343331321312304

732708687667648

13201270124012001170

20802010195018901840

43304190406039403830


FUEL PIPING

TABLE 12-34 1216.2(29)SEMI-RIGID COPPER TUBING [NFPA 54-09: TABLE 6.3(f)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa*Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.Note:(1) All tTable entries are rounded to 3 significant digits.(2) NAmeans a flow of less than 10,000 Btu/hr. (2.90 kW)


INTENDED USE: TUBE SIZING BETWEEN SINGLE OR SECOND STAGE (LOW PRESSURE REGULATOR) AND APPLIANCE.TUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959


4531252119

9364514439

1881291048979

329226182155138

467321258220195

997685550471417

18001230991848752

28301950156013401180

58904050325027802470

60708090100

1716151413

3532302827

7166615754

12511510710095

177163152142134

378348324304287

681626583547517

1070988919862814

22402060191018001700

125150175200250

1110NANANA

2421201816

4844403733

8476706558

119108999282

254230212197175

458415382355315

722654602560496

15001360125011701030

300350400450500

NANANANANA

1514131211

3028262423

5248454240

7468636056

158146136127120

285262244229216

449414385361341

936861801752710

550600650700750

NANANANANA

1110NANANA

2221201918

3836343332

5351494745

11410910410096

205196188180174

324309296284274

674643616592570

8008509009501000

NANANANANA

NANANANANA

1817171616

3130292827

4442414039

9390878583

168162157153149

264256248241234

551533517502488

11001200130014001500

NANANANANA

NANANANANA

1514141313

2625242322

3735343231

7875726966

141135129124119

223212203195188

464442423407392

16001700180019002000

NANANANANA

NANANANANA

1212111111

2120201919

3029282727

6462605857

115112108105102

182176170166161

378366355345335


FUEL PIPING

TABLE 12-35 1216.2(30)SEMI-RIGID COPPER TUBING [NFPA 54-09: TABLE 6.3(g)]

For SI units:1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPa*Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.Note: All tTable entries are rounded to 3 significant digits.


INTENDED USE: TUBE SIZING BETWEEN 2 PSIG SERVICE AND LINE PRESSURE REGULATORTUBE SIZE (inch)

NOMINAL:K & L: 1⁄4 3⁄8 1⁄2 5⁄8 3⁄4 1 11⁄4 11⁄2 2ACR: 3⁄8 1⁄2 5⁄8 3⁄4 7⁄8 11⁄8 13⁄8 – –

OUTSIDE: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125INSIDE:* 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959


413284228195173

852585470402356

17301190956818725

30302080167014301270

43002950237020301800

91706310506043303840

16 50011 400912078006920

26 00017 90014 40012 30010 900

54 20037 30029 90025 60022 700

60708090100

157144134126119

323297276259245

657605562528498

11501060983922871

16301500139013101240

34803200298027902640

62705760536050304750

98809090845079307490

20 60018 90017 60016 50015 600

125150175200250

10595888272

217197181168149

442400368343304

772700644599531

1100992913849753

23402120195018101610

42103820351032702900

66406020554051504560

13 80012 50011 50010 7009510

300350400450500

6660565350

135124116109103

275253235221209

481442411386365

682628584548517

14601340125011701110

26202410225021101990

41403800354033203140

86107920737069206530

550600650700750

4745434140

9793898682

198189181174168

346330316304293

491469449431415

10501000959921888

18901800173016601600

29802840272026202520

62105920567054505250

8008509009501000

3937363534

8077757271

162157152147143

283274265258251

401388376366356

857829804781760

15401490145014101370

24302350228022202160

50704900475046204490

11001200130014001500

3231302827

6764615957

136130124120115

238227217209201

338322309296286

721688659633610

13001240119011401100

20501950187018001730

42704070390037403610

16001700180019002000

2626252423

5553515048

11110810410199

194188182177172

276267259251244

589570553537522

106010301000966940

16701620157015201480

34803370327031703090


FUEL PIPING

TABLE 12-36 1216.2(31)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-09: TABLE 6.3(h)]

For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, thegreater the gas capacity of the tubing.Notes:(1) Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, and/or fittings, or both shall be increasedby an equivalent length of tubing to the following equation: L = 1.3n, where L is additional length (ft) of tubing and n is the number of additional fittings, and/orbends, or both.



INTENDED USE: CSST SIZING BETWEEN SINGLE OR SECOND STAGE (LOW PRESSURE) REGULATOR AND APPLIANCE SHUTOFF VALVETUBE SIZE (EHD)*

FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR

5101520

72503934

99695549

18112910491

211150121106

355254208183

426303248216

744521422365

863605490425

1420971775661

16381179972847

2830199016201400

3270232019001650

5780411033702930

6550464037903290

25304050

30282320

42393330

82746458

94877466

164151131118

192177153137

325297256227

379344297265

583528449397

762698610548

12501140988884

1480135011701050

2630240020901870

2940268023302080

60708090

19171515

26252322

53494544

60575250

107999490

126117109102

207191178169

241222208197

359330307286

502466438414

805745696656

961890833787

1710159014901400

1900176016501550

100150200250300

1411988

2015141211

4131282523

4736333026

8566605350

9875696157

1591231129990

186143129117107

270217183163147

393324283254234

621506438390357

746611531476434

13301090948850777

148012101050934854


FUEL PIPING

TABLE 12-37 1216.2(32)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-09: TABLE 6.3(i)]


INTENDED USE: CSST SIZING BETWEEN 2 PSI SERVICE AND LINE PRESSURE REGULATORTUBE SIZE (EHD)*

FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR

1025304050

426262238203181

558347316271243

927591540469420

1110701640554496

174011201030896806

2170138012701100986

41002560233020101790

47202950269023202070

71304560418036303260

79585147471941163702

15 2009550871075306730

16 80010 700979085007610

29 40018 80017 20014 90013 400

34 20021 70019 80017 20015 400

7580100150200

14714012410186

196189169137118

344333298245213

406393350287248

663643578477415

809768703575501

1460141012601020880

16901630145011801020

26802590233019101660

30532961266221951915

54805300474038603340

62306040541044303840

11 00010 600953078106780

12 60012 20010 90088907710

250300400500

77696053

105968272

191173151135

222203175158

373343298268

448411355319

785716616550

910829716638

1490136011601030

1722157813761237

2980272023502100

3440315027302450

6080556048304330

6900630054604880

For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, thegreater the gas capacity of the tubing.Notes:(1) Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 1 psi (6.89 kPa), do not use this table. Consult with regu-lator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary are capable of varying with flow rate.

(2) CAUTION: Capacities shown in table may exceed are capable of exceeding the maximum capacity for a selected regulator. Consult with regulator or tubingmanufacturer for guidance.




FUEL PIPING

TABLE 12-38 1216.2(33)CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54-09: TABLE 6.3(j)]



LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR1025304050

826509461396352

1070664603520463

17101090999867777

2060131011901030926

31502040187016301460

40002550234020301820

78304860443038203410

89505600510044003930

131008400768066805990

14 4449339856474696717

28 60018 00016 40014 20012 700

31 20019 90018 20015 80014 100

54 40034 70031 70027 60024 700

6380040 40036 90032 00028 600

7580100150200

284275243196169

376363324262226

637618553453393

757731656535464

121011701050866755

1490145013001060923

27702680239019401680

31903090276022401930

49204770428035103050

55395372483039833474

103009990893072706290

11 60011 20010 00082107130

20 30019 60017 60014 40012 500

2340022 70020 30016 60014 400

250300400500

150136117104

202183158140

352322279251

415379328294

679622542488

828757657589

1490136011701050

1730157013601210

2740251021801950

3124286524982247

5620512044303960

6390584050704540

11 20010 30089208000

12 90011 70010 2009110

For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPa*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, thegreater the gas capacity of the tubing.Notes:(1) Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 1 psi (6.89 kPa), do not use this table. Consult with regu-lator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary are capable of varying with flow rate.

(2) CAUTION: Capacities shown in table may exceed are capable of exceeding the maximum capacity for a selected regulator. Consult with regulator or tubingmanufacturer for guidance.




FUEL PIPING


INTENDED USE: PE SIZING BETWEEN INTEGRAL 2-STAGE REGULATOR AT TANK OR 2ND STAGE (LOW PRESSURE REGULATOR) AND BUILDINGPIPE SIZE (inch)

NOMINAL OD: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 3 4DESIGNATION: SDR 9.33 SDR 11.00 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR

1020304050

340233187160142

680468375321285

1230844677580514

2130146011701000890

32102210177015201340

57703970318027302420

16 00011 000881075406680

30 90021 20017 00014 60012 900

60708090100

12911911010398

258237221207196

466428398374353

807742690648612

122011201040978924

21902010187017601660

60505570518048604590

11 70010 80010 00094008900

125150175200250

8778726760

173157145135119

313284261243215

542491452420373

819742683635563

14701330123011401010

40703690339031602800

79007130656061005410

300350400450500

5450464341

10899928782

195179167157148

338311289271256

510469436409387

916843784736695

25302330217020401920

49004510419039303720

TABLE 12-39 1216.2(34)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.3(k)]

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPaNote: All tTable entries are rounded to 3 significant digits.


FUEL PIPING


INTENDED USE: PE PIPE SIZING BETWEEN 2 PSI SERVICE REGULATOR AND LINE PRESSURE REGULATORPIPE SIZE (inch)

NOMINAL OD: 1⁄2 3⁄4 1 11⁄4 11⁄2 2 3 4DESIGNATION: SDR 9.33 SDR 11.00 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00 SDR 11 SDR 11ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR

1020304050

31302150173014801310

62604300345029602620

11 3007760623053304730

19 60013 40010 80092408190

29 50020 30016 30014 00012 400

5310036 50029 30025 10022 200

147 000101 00081 10069 40061 500

284 000195 000157 000134 100119 000

60708090100

119010901010952899

23702180203019101800

42803940367034403250

74206830635059605630

11 20010 300959090008500

20 10018 50017 20016 20015 300

55 70051 30047 70044 70042 300

108 00099 10092 20086 50081 700

125150175200250

797722664618548

16001450133012401100

28802610240022301980

49904520416038703430

75306830628058405180

13 50012 30011 30010 5009300

37 50033 90031 20029 00025 700

72 40065 60060 30056 10049 800

300350400450500

496457425399377

994914851798754

17901650153014401360

31102860266025002360

46904320402037703560

84307760722067706390

23 30021 50012 00018 70017 700

45100415003860036 20034 200

550600650700750

358341327314302

716683654628605

12901230118011301090

22402140204019601890

33803220309029702860

60705790555053305140

16 80016 00015 40014 70014 200

32 50031 00029 70028 50027 500

8008509009501000

292283274266259

585566549533518

10501020990961935

18301770171016701620

27602670259025202450

49604800465045204400

13 70013 30012 90012 50012 200

26 50025 70024 90024 20023 500

11001200130014001500

246234225216208

492470450432416

888847811779751

15401470141013501300

23202220212020401960

41703980381036603530

11 50011 00010 60010 1009760

22 30021 30020 40019 60018 900

16001700180019002000

201194188183178

402389377366356

725702680661643

12601220118011401110

19001840178017301680

34103300320031103020

94309130885085908360

18 20017 60017 10016 60016 200

TABLE 12-40 1216.2(35)POLYETHYLENE PLASTIC PIPE [NFPA 54-12: TABLE 6.3(l)]

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.894 kPaNote: All tTable entries are rounded to 3 significant digits.


FUEL PIPING


INTENDED USE: PE TUBE SIZING BETWEEN INTEGRAL2-STAGE REGULATOR AT TANK OR SECOND STAGE (LOW PRESSURE

REGULATOR) AND BUILDING.PLASTIC TUBING SIZE (CTS) (inch)

NOMINAL OD: 1⁄2 3⁄4DESIGNATION: SDR 7.00 SDR 11.00ACTUAL ID: 0.445 0.927LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR

1020304050

12183675751

828569457391347

60708090100

4642393735

314289269252238

125150175200

31282624

211191176164

225250275300

22212019

154145138132

350400450500

18161515

121113106100

TABLE 12-41 1216.2(36)POLYETHYLENE PLASTIC TUBING [NFPA 54-12: TABLE 6.3(m)]

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal unitsper hour = 0.293kW, 1 inch water column = 0.249 kPaNote: All tTable entries are rounded to 3 significant digits.

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