Piping Codes.ppt
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Transcript of Piping Codes.ppt
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PIPING CODE
PRESENTED BY : MUHAMMAD NASIRJuly 30, 2009
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Definitions:
piping: assemblies of piping components used for fluid flows. Piping also includes piping supporting element, but does not include support structures…or equipment..
piping components: mechanical element suitable for joining or assembly into pressure–tight fluid–containing piping systems…pipe, tubing, fittings, flanges, gasket, bolting, valves and devices such as expansion joints, traps, strainers etc.
piping system: interconnected piping subject to the same design conditions
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Code: set forth minimum requirements for design, material, fabrication, erection, testing, and inspection.
• Provide a set of requirements for obtaining a safe, reliable and economical installation.
• For example: ASME B31- Code for Pressure Piping
Definitions:
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Piping Development Process
1. Establish applicable system Code2. Establish design conditions3. Make piping material decisions
• Material of construction• Determine wall thickness• Valves
4. Establish preliminary piping system layout and support configuration
5. Perform flexibility analysis6. Finalize layout and bill of material7. Fabricate and install8. Examine and test
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PRESSURE PIPING CODES
ASME B 31 (earlier known as ANSI B 31) B31 Code for pressure piping, developed by ASME
B31.1 Power Piping Electric power generating stations, geothermal heating
system, and central and direct heating and cooling system
B31.3 Process Piping Petroleum refineries, chemical, pharmaceutical, textile,
paper, and cryogenic plants; and related processing plants
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PRESSURE PIPING CODES (Cont’d)
B31.4 Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids
B31.5 Refrigeration Piping and Heat Transfer Components
Refrigerants and secondary coolants
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PRESSURE PIPING CODES (Cont’d)
B31.8 Gas Transmission and Distribution Piping Systems
Gas between sources and terminals, including compressor, regulating and metering stations, gas gathering pipelines
B31.9 Building Services Piping
Industrial, institutional, commercial, and public buildings, and in multi-unit residencies, which does not require the range of sizes, pressures, and temperature covered in B31.1
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PRESSURE PIPING CODES (Cont’d)
B31.11 Slurry Transportation Piping Systems
Aqueous slurries between plants, and terminals and within terminals, pumping and regulating stations
ANSI Z223.1 National fuel gas code (earlier known as B31.2)
Fuel gas from the point of delivery to the connection of each fuel utilization device
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ASME B31.3 Scope
Rules for the Process Piping Code Section B31.3 have been developed considering piping typically found in petroleum refineries; chemical, pharmaceutical, textile, paper, and cryogenic plants; and related processing plants and terminals.
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ASME B31.3 Scope
This Code prescribes requirements for:• Materials and components• Design• Fabrication• Assembly• Erection• Examination• Inspection• Testing
of piping
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ASME B31.3 Scope
This Code applies for all fluids, including:• Raw, intermediate, and finished chemicals• Petroleum products• Gas, steam, air, water• Refrigerants; and
• Cryogenic fluids
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Exclusions
- Piping system designed for • internal gauge pressure > 0 and < 15psi• nonflammable, • non toxic, • not damaging to human tissue• design temperature -290C through 1860C
Boilers and piping required to conform to B31.1 Tubes and manifolds of fired heaters Pressure equipment such as pressure vessels and
pumps, including internal piping
ASME B31.3 Scope
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SCOPE OF B31.3 PIPING
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DESIGN
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DESIGN (Cont’d)
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DESIGN (Cont’d)
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DESIGN (Cont’d)
Straight pipe under internal pressureFor t<D/6
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DESIGN (Cont’d)
Straight pipe under internal pressureFor t<D/6
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DESIGN (Cont’d)
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FFC PIPING SYSTEM
Based on Snamprogetti’s piping specification
Separate specification for Plant-I & Plant-II
Comprises of three letters XYZ, for e.g. 11A, 13B, 33A, 88D etc.
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53A
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DECODING OF SP’s PIPING SPECS.
X Y Z
X -- Numerical, piping material
1,2 = Carbon Steel 3 = Stainless Steel 5 = Killed Carbon Steel, Low Alloy 7 = Carbon Steel, Low Alloy 9 = Special alloys, steel
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DECODING OF SP’s PIPING SPECS. (Cont’d)
Y -- Numerical, rating 1 = 150 LB 3 = 300 LB 4 = 400 LB 5 = 600 LB 6 = 900 LB 7 = 1500 LB 8 = 2500 LB 9 = Special
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DECODING OF SP’s PIPING SPECS. (Cont’d)
Z -- Alphabetic Depends on service condition and fluids handled
Example: 11A means
1 -- Carbon Steel
1 -- 150 LB rating
Service -- Raw water, clarified water,
Utility air, CO2 Compressor suction
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INFORMATION AVAILABLE
Pipe material & manufacture • API 5 L Gr B seamless/ ERW / SAW, ASTM A-333
Gr. 1, ASTM A- 312 TP 304L, etc.
Valves types and specification according to line size
• VS 215 A01 SW, VD 311 A01 RF, etc.
Piping fitting & components with their material• Elbow 3000# SW 0380.00 ASTM A-105
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INFORMATION AVAILABLE (Cont’d)
Pipe size and thickness• 10” 6.35 mm
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INFORMATION AVAILABLE (Cont’d) Pressure-Temperature rating
• 1000C 18 kg/cm2
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INFORMATION AVAILABLE (Cont’d)
Corrosion allowance
Welding specification • W310
Piping class• 1, 2, 3 or 4
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INFORMATION AVAILABLE (Cont’d)
Special note• Heat treatment,