F-201(Norma Pdvsa Tanques Atmosfericos)

8112019 F-201(Norma Pdvsa Tanques Atmosfericos)

httpslidepdfcomreaderfullf-201norma-pdvsa-tanques-atmosfericos 117

PDVSA Ndeg TITLE

REV DATE DESCRIPTION PAG REV APPD APPD

APPDBY DATEDATE

VOLUME 19

PDVSA 1983

Fndash201 ATMOSPHERIC STORAGE TANKS

FOR APPROVAL

Alexis Areacutevalo Enrique CarmonaDEC00 DEC00

ENGINEERING SPECIFICATION

DIC86

ABR94

DEC 00 Y K

L T

3

2

0

GENERAL REVISION

GENERAL REVISION 16

37

32

A A

E J

E C

A N

ENGINEERING DESIGN MANUAL

ESPECIALISTAS

APPDBY



REVISION FECHA


ATMOSPHERIC STORAGE TANKS DEC003

PDVSA Fndash201

Paacutegina 1

Menuacute Principal Indice manual Indice volumen Indice norma

Index

SECTION 1 ndash SCOPE 2

13 Referenced Publications 2

14 (Addition) Drawings 2

15 (Addition) Definitions 3

SECTION 2 ndash MATERIALS 4

SECTION 3 ndash DESIGN 4

34 Bottom Plates 4

35 Shell Design 5

36 Shell Openings 5 310 Roofs 7

312 (Addition) Floating Roof Design 7

313 (Addition) Floating Roof Seals 9

314 (Additions) Floating Roof Supports and Drains 9

315 (Addition) Design Additional Requirements 10

SECTION 5 ndash ERECTION 12

52 Detail of Welding 12

53 Inspection Testing and Repairs 12

SECTION 6 ndash METHODS OF INSPECTING JOINTS 13

SECTION 7 ndash WELDING PROCEDURE AND WELDERQUALIFICATIONS 13

74 Qualification of Welders 13



REVISION FECHA



PDVSA F ndash201

Paacutegina 2


FOREWORD

This specification covers minimum requirements for materials designfabrication erection and testing of welded steel storage tanks for above groundatmospheric liquid hydrocarbons and chemical storage This specification doesnot cover tanks for water storage

This specification is intended to supplement API Standard 650 Tenth EditionNovember 1998 Paragraph numbers figures and tables of this specificationcorrespond to those in API 650 Paragraph numbers not found in API 650 are newparagraphs

Paragraphs shall be highlighted as shown below to indicate the type of changefrom the API Standard

(Addition) New paragraph or supplemental requirementsclarifications to anexisting paragraph

(Deleted) Paragraph deleted

(Decision) A decision has been made as required

(Substitution) Paragraph supersedes API in its entirety

SECTION 1 ndash SCOPE

113 (Substitution) The SI measuring system shall be used in drawings Dimensions

of piping flanges nozzles and bolts shall be in English units

119 (Substitution) The seismic design of tanks shall meet the requirements of PDVSAFJ ndash 251 ldquoSeismic Design of Metallic Tanksrdquo

13 Referenced Publications

131 (Addition) In addition to API 650 tanks designed according to this specificationmust comply with applicable Venezuelan codes laws and standards

132 (Addition) Tanks designed according to this specification must comply therequirements of PDVSA ndash FJ ndash 251 ldquoSeismic Design of Metallic Tanksrdquo and of

PDVSA ndash FJ ndash 221 ldquoDisentildeo Antisiacutesmico de Instalaciones Industrialesrdquo

133 (Addition) PDVSA IR ndash M ndash 03 ldquoSistema de Agua Contra Incendiordquo

134 (Addition) PDVSA IR ndash M ndash 04 ldquoSistema de Espuma Contra Incendiordquo

14 (Addition) Drawings

The PDVSA representative shall supply data sheets and schematic drawings ofthe basic design indicating tank capacity properties of products to be stored



REVISION FECHA



PDVSA F ndash201

Paacutegina 3


nozzles orientation nozzles elevation site location and environmental conditions

Contractor shall design the tank and provide a complete set of detailedmechanical drawings for shop andor field fabrication and installation proceduresthat will guarantee correct construction within the tolerances indicated in codeAPI 650

15 (Addition) Definitions

151 Low strength tank steels

Steels having a specified minimum yield strength equal or lower than 43000 psiand a specified maximum tensile strength equal to or lower than 85000 psi

152 High strength tank steels

Steels having a specified minimum yield strength greater than 43000 psi and aspecified maximum tensile strength equal to or lower than 100000 psi

153 Peaking

Deviation of shell contour from a true circle at vertical joints It shall be determinedover a horizontal span of 900 mm centered on the weld

154 Banding

Deviation of the shell at horizontal joints from a vertical line It shall be determinedover a vertical span of 900 mm centered on the weld

155 Annular plates

Butt ndash welded bottom plates forming an annular ring upon which the shell isinstalled

156 Fully stiffened pontoons

Floating roof pontoons with top and bottom reinforced plates in order that theentire pontoon cross section is effective in carrying loads transmitted from thecenter deck

157 Partially stiffened pontoonsFloating roof pontoons having top and bottom plates reinforced in such a way thatonly part of the pontoon cross section is effective in carrying loads transmittedfrom the center deck

157 Production impact test plates

(As defined by ASME Code Section VIII Par UG84) Whenever the base materialrequires impact testing production weld test coupons shall be made tested andthe results shall be delivered to PDVSA prior to starting the tank erection



REVISION FECHA



PDVSA F ndash201

Paacutegina 4


The production test coupons shall be taken from the bottom middle and top

course longitudinal and circumferential weld seams A test coupon shall be takenfrom each heat number used in the tank construction The test coupon shall bewelded as an extension to the end of the production weld If it is not practical todo it the test plate will be made under the same production conditions as theactual tank welds using the same welding procedure joint details number ofpasses position and consumables required for the actual tank joint Inspectorrefers to the PDVSA representative

SECTION 2 ndash MATERIALS

214 (Addition) Material specifications for annular plates shall be the same of thecorresponding first course

215 (Addition) Cast fittings shall not be permitted

216 (Addition) No welded piping (API 5L or equivalent) is permitted for nozzle annozzle necks for tanks constructed with steels having a specified minimum Yieldstrength greater than 43000 psi and a specified maximum tensile strength equalto or lower than 100000 psi

SECTION 3 ndash DESIGN

332 Corrosion Allowances

(Addition) Corrosion allowance shall be considered as specified in the PDVSAdata sheet but never be less than 15 mm

34 Bottom Plates

344 (Addition) PDVSArsquos sketch shall specify the following requirements for bottomslope rdquoNonerdquo ldquoApex uprdquo or ldquoApex Downrdquo

35 Annular Bottom Plates

356 (Addition) The annular bottom plate width shall be in accordance with Table 1 oras calculated per 352 of API 650 whichever is greater

TABLE 34A CATEGORY OF BOTTOM REQUIRED

CategoryPredictedSettlement (2)

ANNULAR PLATE WIDTH

of BottomSpecified

Maximum atshell

Tank Diameter (1)

Over 15 m to 45 m

Tank Diameter

Over 45 m

1 le 50 mm Per API Standard 650

Annular plates with a minimumradial width of 600 mm between theinside of the shell and anylap ndash welded joint on the bottom



REVISION FECHA



PDVSA F ndash201

Paacutegina 5


2 le 150 mm

Annular plates with aminimum radial width of 600mm between the inside ofthe shell and anylap ndash welded joint on thebottom


3 le 300 mm (3)


Annular plates with a minimumradial width of 1800 mm betweenthe inside of the shell and anylap ndash welded joint on the bottom

NOTES

a No special requirements for tanks 15 meters or under in diameter

b Predicted settlements are based on the following conditions

ndash Settlements include the initial water loading of the tank

ndash Differential settlements of tank bottom are defined as the deviation with respectto uniform soil settlements

ndash The bidimensional tank inclination is not considered to be harmful for the tankbottom

c If the predicted tank settlement is excessive means of improving foundation

characteristics must be considered before tank construction

d Bottom plates shall have two pass welds

e The annular plate width shall not be less than calculated according to API 650

f Annular bottom plate thickness shall comply with requirements of PDVSA ndash FJ ndash 251

36 Shell Design

3613 (Addition) The specific gravity used for the design shall be 10 Use actual value

when the specific gravity of the fluid is greater than 10

3619 (Addition) The tank shell course thickness shall be designed according to the ldquo1 ndash foot method of API 650rdquo Calculation of the thickness by the ldquovariable design pointmethodrdquo requires PDVSA approval

36110 (Addition) All vertical and horizontal shell joints shall be designed and specifiedusing complete penetration and fusion welding procedures

36111 (Addition) Single butt welds are not permitted



REVISION FECHA



PDVSA F ndash201

Paacutegina 6


37 Shell Openings

371 General

3719 (Addition) The minimum number of shell and roof manholes shall be as follows

Nominal Tank RoofNominal TankDiameter ( meters)

ShellFixed Floating

Up to 6 m 1 1 1

From 6 to 20 m 2 2 1

From 20 to 30 m 2 2 2

Greater than 30 m 3 2 2

375 Shell Manholes

3751 (Substitution) Shell manholes shall conform to Figures3 ndash 4A and 3 ndash 4B and Tables3 ndash 3 through 3 ndash 5 except that the minimum size shall be equal or greater than 24in Other shapes are permitted by 3718 Manhole reinforcing plates or eachsegment of the plates if they are not made in once piece shall be provided witha 6 ndash mm (14 ndash in) diameter telltale hole (for detection of leakage through theinterior welds) Each hole shall be located on the horizontal position centerline andshall be open to the atmosphere All tanks shall have at least one manhole of 30in

378 Flush ndashType Shell Connections

37812 (Addition) Flush type shell connections shall be provided with a flow guide box

384 Roof Manholes

384 (Addition) Manual Gauging and Sampling for Fixed Roof Tanks A gauging hatchshall be installed on a roof manhole cover with a minimum diameter of 200 mmThe gauging hatch shall have a heavy stay ndash back cover and a seal with a corrosionresistant seat suitable for a pressure of 2 ozsq in or the design pressure of thetank whichever is greater

387 Water Draw ndashoff Sumps

(Substitution) Water draw ndash off sumps shall be as specified in Figure 3 ndash 16 andTable 3 ndash 18 with the exceptions indicated herein and according to PDVSAsketches Tanks for hydrocarbon service shall be provided with a minimum of onewater draw ndash off connection

For tanks of 6 m in diameter or less a water sump is not required

For apex down cone bottom tanks a sump is not required The draw ndash off lineshall be piped to the center of the tank turned down and terminated 100 mmabove bottom



REVISION FECHA



PDVSA F ndash201

Paacutegina 7


For tanks over 6 m in diameter a water sump is required The end of the

draw ndash

off pipe shall be 100 mm from the bottom of the sump394 Stiffening Rings As Walkways

(Substitution) A stiffening ring or any portion of it that is specified as a walkwayshall have a width not less than 760 mm clear of the projecting curb angle on thetop of the tank shell It shall be located 1050 mm below the top of the curb angleand shall be provided with a standard railing on the unprotected side and at theends of the sections used as a walkway

396 Top wind girder

3964 When a curb angle is required at the top of the shell of floating roof tanks the

horizontal leg shall extend outward (Figure 3 ndash 20 detail b API 650)

310 Roofs

3101 Definitions

3101b (Decision) Self ndash Supporting roofs are permitted only with PDVSA approval

31023 (Substitution) Roof plates of supported cone roof shall not be attached to thesupporting members For tanks to be operated at high temperatures the rafter toshell connection shall be designed to allow differential thermal expansionbetween the shell and the roof rafters

310253 (Addition) A frangible joint at the roof to shell junction shall be provided forsupported cone and self ndash supporting cone roof designs

31029 (Addition) The horizontal leg of the roof ndash supporting angle shall be turned inwardIf the shell top angle is butt ndash welded to the shell (API 650 Fig F ndash 2 (d) or (i) adouble side weld is required

312 (Addition) Floating Roof Design

3121 The design of floating roof tanks with specified flush type nozzles shall permit theouter pontoon to reach a point within 380 mm of the tank bottom unless limitedby obstructions such as mixers roof drains etc

3122 Tank roof design for tanks larger than 18 m in diameter shall be as follows

a Roofs shall be of the low deck (minimum vapor space) type

b Center decks greater than 45 m in diameter shall have channel stiffeners onthe under side of the deck Stiffeners shall be 6in 82 lbsft or 160 mm 133kgm minimum and shall be installed as concentric rings with a maximumradial spacing of 6m In addition the underside deck plates shall have



REVISION FECHA



PDVSA F ndash201

Paacutegina 8


continuously welded lap joints at a radial distance of 12 m from the center

of the roof3123 Roofs for tanks greater than 46 m in diameter shall be designed for elastic stability

against ldquogross out of planerdquo buckling and ldquolocalrdquo buckling of the outer pontoon dueto the radial load imposed by deflection of the center deck This radial load shallbe determined from the 250 mm of rainfall loading condition as defined in API 650Appendix C34 or punctured center deck loading condition whichever governs

For prevention of gross out of plane buckling the following relations shall besatisfied

a For ldquoFully stiffenedrdquo pontoons

Nlt 75 EIx R3

b For ldquoPartially Stiffenedrdquo pontoons

N lt 50 EIx R3

Where

N = Design radial inward load lbin

E = Modulus of elasticity psi

R = Mean radius of pontoon ring in

Ix = Moment of inertia of full pontoon cross section with respect to horizontal axis through its centroid in4

Or

a For ldquoFully Stiffenedrdquo pontoons

N lt 75 x 10 ndash 3 EIx R3



Where

N = Design radial inward load Newtons per millimeter

E = Modulus of elasticity KpaR = Mean radius of pontoon ring mm

Ix = Moment of inertia of full pontoon cross section with respect to horizontal axis through its centroid mm4

c The radial unsupported width of ldquoPartially Stiffenedrdquo plates shall not exceed3m

3124 The inner rim of ldquoPartiallyrdquo and ldquoFully Stiffenedrdquo pontoons shall have the followingminimum thickness



REVISION FECHA



PDVSA F ndash201

Paacutegina 9


TANK DIAMETER RIM THICKNESS60 to 75 m 16 mm

75 to 90 m 19 mm

3125 For tanks over 60 m in diameter the following calculations and tests are requiredto substantiate the elastic stability of the roof pontoon design

a Where the roof design has not been previously approved by PDVSA thevendor shall submit test data of a roof of similar diameter to validate thedesign

b Where validation has not been made the vendor shall conduct a proof teston the largest tank to be supplied The proof test shall be based on the mostcritical design load condition Calculations shall be submitted to PDVSA for

approval3126 Tanks greater than 90 m in diameter shall have the following roof construction

a The roof shall be double deck type

b The top edge of the inner rim plates in the first two central compartmentsshall be welded with continuous single fillet welds

c All circumferential compartments other than the outer compartments shallbe provided with a minimum of four radial partition plates

313 (Addition) Floating Roof Seals

3131 Roof seals shall contact the liquid level at the shell for at least 90 of thecircumference of the tank The maximum permissible gap between the primaryseal and the tank shell is 6 mm

3132 Toroidal type seals shall be equipped with a weather shield unless secondaryseals are specified Liquid mounted toroidal seals are preferred

3133 Floating roofs with a flexible steel shoe type primary seal shall be equipped withan abrasion resistant weather and product proof flexible seal in order to closethe space between the seating ring and the rim of the floating roof and shall bedesigned to avoid any jam between the shell and the shoe when the roof ismoving

3134 Secondary seals shall be installed if required by PDVSA in the inquiry documentsand the design shall be approved by PDVSA

3135 The design of primary seals secondary seals and weather shields shall permitinstallation and removal from the top of the roof

314 (Additions) Floating Roof Supports and Drains

3141 Supports shall be made of carbon steel pipe schedule 80 minimum thicknessThey shall be provided with a in hole at the bottom for drainage



REVISION FECHA



PDVSA F ndash201

Paacutegina 10


3142 The clearance between the support and the roof support sleeve shall be 3 mm

nominally at all points3143 Supports shall be adjustable to two positions

a The lower position shall permit the roof to reach 75 mm below the specifiedlowest operating position without interference with any internal accessoryor roof seal mechanism

b The upper position shall provide a clearance of 2 meters between the roofand the tank bottom for cleaning purposes

3144 Bearing plates shall be centered under each support welded to the shell bottom

by a 5 ndash

mm continuous fillet weld Plate dimension shall be 24 in square by 38 inthick

3145 The length of the leg support sleeves shall be such that any opening will be abovethe liquid level when the deck is deflected by the 250 ndash mm rainfall or by apunctured center deck loading condition The height of the support sleeves for asingle deck pontoon roof shall never be less than the tank diameter divided by 60

3146 Emergency drains shall not be provided when the pontoon area is less than 50of the roof area Only for double deck type roofs may credit is taken in the roofdesign when emergency drains are furnished

315 (Addition) Design Additional Requirements

3151 Level Gauge for Tanks

Gauge type and installation shall be specified or approved by PDVSArsquosrepresentative At least one level gauge per tank readable from grade shall beprovided

3152 Vertical tanks shall be gauged in accordance to API 2550

3153 Roof Vents

For fixed roof tanks design and installation of normal and emergency vents(including vacuum vents) shall be as specified in API STD 2000

Floating roof tanks shall be equipped with a bleeder vent designed to openautomatically when the roof lowers to a level of 75 mm

When flexible steel shoe ndash type seals are employed and the shoes extend into theliquid more than 100 mm the roof shall be equipped with a vent or vents betweenthe roof rim and the seal shoe These vents shall release excess air ornon ndash condensable vapors entering the tank through the filling line





REVISION FECHA



PDVSA F ndash201

Paacutegina 12


walkways and platforms posts will be installed on the base plates on all sides

except at the access31594 Dome roof tanks shall require walkways from the edge to the center of the roof

for maintenance of accessories These walkways will have handrails on bothsides and around working platforms A swinging door shall be installed at access

SECTION 5 ndashERECTION

52 Detail of Welding

525 Roofs

(Addition) Cone and dome roofs shall not have depressions that will allowaccumulation of water

53 Inspection Testing and Repairs

531 General

5315 (Addition) Hardness of hot ndash formed sections weld metal and the heat ndash affectedzone (HAZ) of all welds shall not exceed 200 Brinnell The tank erector shall checkthe weld hardness of the initial production weld for each welding process fillermetal and technique used If the clearances are such that it is not possible tocheck the production weld a mockup under identical conditions shall be used

534 (Substitution) Inspection of Tank Bottom Welds

a All bottom plate joints shall be vacuum tested using soapsuds solution at ndash 10 psig

b Annular plate butt joints shall be 100 radiographed or shall be magneticparticle inspected from the topside after completion of the root pass andagain after completion of the full weld

c Bottom to the shell joint shall be inspected as follows

bull The inner fillet weld shall be leak tested after depositing at least onelayer and prior to starting the outside fillet weld This leak testing shallbe performed with penetrating oil after slag removal All oil shall beremoved before welding the outside fillet and before completing anypartially filled inner fillet weld

bull Examination for inner fillet toe cracks shall be performed using eitherthe liquid penetrant or magnetic particle method

bull The gap between the bottom shell ring and the lap welded bottomplates at the radial weld locations shall be a maximum of 3 mm





REVISION FECHA



PDVSA F ndash201

Paacutegina 14


a Fillet weld geometry

b Using the same type of electrode (same manufacturerrsquos designation) plate(same material and thickness) and welding procedure as will be used forthe tank bottom 600 linear mm of lap weld shall be made

c 75 x 400mm tensile test strips shall be cut of this weld The minimumbreaking strength of the strips shall be at least 70 or 80 of the specifiedor guaranteed minimum tensile strength of the non ndash welded plate for a 70or 80 joint efficiency respectively Weld failure shall be at least 95 of theshear fracture

d From a separate test plate consisting of 300 mm of the first pass of thebottom plate fillet weld three cross sections of the weld shall be taken toshow the penetration into the base material The minimum penetration at theheel to be mm as shown in the above sketch and complete fusion shallexist throughout each cross section



REVISION FECHA



PDVSA F ndash201

Paacutegina 15


APPENDIX B ndash RECOMMENDATIONS FOR DESIGN AND

CONSTRUCTION OF FOUNDATIONS FOR ABOVEGROUND OILSTORAGE TANKS

B2 Subsurface Investigation and Construction

B26 (Addition) Settlement Measurements for tanks larger than 15 meters indiameter

a Shell settlement measurements shall be made after tank erection prior tohydrostatic testing and during water filling at the and full levelscorresponding to the maximum filling height of the tank Water shall be heldat the and levels for 24 hours and settlement data assessed for

unexpected soil behavior Shell settlement shall be taken at the beginningand end of each hold period Settlement measurements shall be taken atequally spaced intervals of approximately 10m around the tank shell onwell ndash marked locations on the annular plate or on clips welded to the shell

b Ten (10) bottom internal measurements shall be made after hydrostatictesting at 3m intervals (see Fig 1) and the following

Tank Diameter Meters Number ofDiameter Axes

Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10

Additional measurements shall be made in the annular plate region atapproximately 10 meters intervals around the tank shell At least 3 measurementsshall be made at each location commencing inward from the inside surface of thetank shell and equally spaced on a radial line A 100 visual examination shallbe made of the tank bottom to detect any localized depression





REVISION FECHA



PDVSA Fndash201

Paacutegina 1


Index

SECTION 1 ndash SCOPE 2

13 Referenced Publications 2

14 (Addition) Drawings 2

15 (Addition) Definitions 3

SECTION 2 ndash MATERIALS 4

SECTION 3 ndash DESIGN 4

34 Bottom Plates 4

35 Shell Design 5

36 Shell Openings 5 310 Roofs 7

312 (Addition) Floating Roof Design 7

313 (Addition) Floating Roof Seals 9

314 (Additions) Floating Roof Supports and Drains 9

315 (Addition) Design Additional Requirements 10

SECTION 5 ndash ERECTION 12

52 Detail of Welding 12

53 Inspection Testing and Repairs 12

SECTION 6 ndash METHODS OF INSPECTING JOINTS 13

SECTION 7 ndash WELDING PROCEDURE AND WELDERQUALIFICATIONS 13

74 Qualification of Welders 13



REVISION FECHA



PDVSA F ndash201

Paacutegina 2


FOREWORD






















REVISION FECHA



PDVSA F ndash201

Paacutegina 3









153 Peaking


154 Banding


155 Annular plates









REVISION FECHA



PDVSA F ndash201

Paacutegina 4











34 Bottom Plates






ANNULAR PLATE WIDTH

of BottomSpecified

Maximum atshell

Tank Diameter (1)

Over 15 m to 45 m

Tank Diameter

Over 45 m





REVISION FECHA



PDVSA F ndash201

Paacutegina 5


2 le 150 mm



3 le 300 mm (3)



NOTES











36 Shell Design








REVISION FECHA



PDVSA F ndash201

Paacutegina 6


37 Shell Openings

371 General



ShellFixed Floating

Up to 6 m 1 1 1

From 6 to 20 m 2 2 1

From 20 to 30 m 2 2 2


375 Shell Manholes




384 Roof Manholes








REVISION FECHA



PDVSA F ndash201

Paacutegina 7



draw ndash



396 Top wind girder



310 Roofs

3101 Definitions












REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 2


FOREWORD






















REVISION FECHA



PDVSA F ndash201

Paacutegina 3









153 Peaking


154 Banding


155 Annular plates









REVISION FECHA



PDVSA F ndash201

Paacutegina 4











34 Bottom Plates






ANNULAR PLATE WIDTH

of BottomSpecified

Maximum atshell

Tank Diameter (1)

Over 15 m to 45 m

Tank Diameter

Over 45 m





REVISION FECHA



PDVSA F ndash201

Paacutegina 5


2 le 150 mm



3 le 300 mm (3)



NOTES











36 Shell Design








REVISION FECHA



PDVSA F ndash201

Paacutegina 6


37 Shell Openings

371 General



ShellFixed Floating

Up to 6 m 1 1 1

From 6 to 20 m 2 2 1

From 20 to 30 m 2 2 2


375 Shell Manholes




384 Roof Manholes








REVISION FECHA



PDVSA F ndash201

Paacutegina 7



draw ndash



396 Top wind girder



310 Roofs

3101 Definitions












REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 3









153 Peaking


154 Banding


155 Annular plates









REVISION FECHA



PDVSA F ndash201

Paacutegina 4











34 Bottom Plates






ANNULAR PLATE WIDTH

of BottomSpecified

Maximum atshell

Tank Diameter (1)

Over 15 m to 45 m

Tank Diameter

Over 45 m





REVISION FECHA



PDVSA F ndash201

Paacutegina 5


2 le 150 mm



3 le 300 mm (3)



NOTES











36 Shell Design








REVISION FECHA



PDVSA F ndash201

Paacutegina 6


37 Shell Openings

371 General



ShellFixed Floating

Up to 6 m 1 1 1

From 6 to 20 m 2 2 1

From 20 to 30 m 2 2 2


375 Shell Manholes




384 Roof Manholes








REVISION FECHA



PDVSA F ndash201

Paacutegina 7



draw ndash



396 Top wind girder



310 Roofs

3101 Definitions












REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 4











34 Bottom Plates






ANNULAR PLATE WIDTH

of BottomSpecified

Maximum atshell

Tank Diameter (1)

Over 15 m to 45 m

Tank Diameter

Over 45 m





REVISION FECHA



PDVSA F ndash201

Paacutegina 5


2 le 150 mm



3 le 300 mm (3)



NOTES











36 Shell Design








REVISION FECHA



PDVSA F ndash201

Paacutegina 6


37 Shell Openings

371 General



ShellFixed Floating

Up to 6 m 1 1 1

From 6 to 20 m 2 2 1

From 20 to 30 m 2 2 2


375 Shell Manholes




384 Roof Manholes








REVISION FECHA



PDVSA F ndash201

Paacutegina 7



draw ndash



396 Top wind girder



310 Roofs

3101 Definitions












REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 5


2 le 150 mm



3 le 300 mm (3)



NOTES











36 Shell Design








REVISION FECHA



PDVSA F ndash201

Paacutegina 6


37 Shell Openings

371 General



ShellFixed Floating

Up to 6 m 1 1 1

From 6 to 20 m 2 2 1

From 20 to 30 m 2 2 2


375 Shell Manholes




384 Roof Manholes








REVISION FECHA



PDVSA F ndash201

Paacutegina 7



draw ndash



396 Top wind girder



310 Roofs

3101 Definitions












REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 6


37 Shell Openings

371 General



ShellFixed Floating

Up to 6 m 1 1 1

From 6 to 20 m 2 2 1

From 20 to 30 m 2 2 2


375 Shell Manholes




384 Roof Manholes








REVISION FECHA



PDVSA F ndash201

Paacutegina 7



draw ndash



396 Top wind girder



310 Roofs

3101 Definitions












REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 7



draw ndash



396 Top wind girder



310 Roofs

3101 Definitions












REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 8







Nlt 75 EIx R3


N lt 50 EIx R3

Where





Or





Where








REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 9



75 to 90 m 19 mm


















REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 10







by a 5 ndash








3153 Roof Vents








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10








REVISION FECHA



PDVSA F ndash201

Paacutegina 12







525 Roofs



531 General













REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10








REVISION FECHA



PDVSA F ndash201

Paacutegina 14








REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10






REVISION FECHA



PDVSA F ndash201

Paacutegina 15










Less or equal to 46

From 46 to 69

From 69 to 99

Greater than

4

6

8

10




F-201(Norma Pdvsa Tanques Atmosfericos)

Documents

Transcript of F-201(Norma Pdvsa Tanques Atmosfericos)