23627208 piping stress specification (1)
TRANSCRIPT
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PTTEP ARTHIT FIELD DEVELOPMENT
CENTRAL FACILITIES
PIPING STRESS ANALYSIS SPECIFICATIONA-1-PP-PI-SP-0003
CONTRACT NO .A-TPD 03-0043
This cover page is a record of all revisions of the standard/specification identified above by number and title.
All previous cover pages are hereby superseded and are to be destroyed.
B1 13.08.04 A!"#$% &"! %$'()* %! B+ A!( B+, '"+-A(
A1 1.0.04 (''$% &"! A!"#A2 %! B+ A!( B+,
!1 .0.04 (*T$!5%(-(2(*$ -$-, %! B# A!(
Rev.
No.
Date Puro!e o" I!!ue Preare#
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TA$LE OF CONTENTS
1.0 INTRODCTION 3
/.0 REFERNCE DOCMENTS CODES AND STANDARDS 3
3.0 O$2ECTIVES
4.0 DEFINITION OF CRITICAL STRESS CATEGORIES 5
.0 STRESS ANALYSIS DESIGN CONSIDERATIONS 6
5.0 STRESS DOCMENTATION 10
7.0 PIPE SPPORT DESIGN 1/
6.0 NO88LE ALLO9A$LE LOAD CRITERIA 1/
APPENDI:-1 ; CAESAR LOAD CASES 17
APPENDI:-/ ; E:TERNAL FORCES AND MOMENTS ON NO88LES 16
APPENDI:-3 ; 9IND LOADING DATA /1
APPENDI:-4 ; TYPICAL RESTRAINT SYM$OLS SED IN STRESS ISOMETRICS //
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1.0 INTRODCTION
1.1 S'oe
a6 This document defines the method by 7hich piping systems are selectedand defined as -ritical by the $ngineering -ontractor9s :,B!6 iping'tress $ngineer. -ritical lines are those to be stress analysed/revie7edby the iping 'tress $ngineer.
The term ;piping; referred to in this document is applicable to all of theplatform topsides pipe 7or< up to and including the riser $'%#;s:$mergency 'hutdo7n #alves6 e=tending up to the hanger flange. Thee=tent of analysis for the topside piping :4> si?e6 riser under TT scopeshall be mutually discussed and agreed.
b6 -alculation methods and application of code based procedures forpiping stress analysis are defined in this document.
c6 This document also defines the permissible values of no??le loads imposedby piping on connected mechanical e@uipment such as e=changerpressure vessels and rotating e@uipment as 7ell as e@uipment s
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.1.3 A5155(5'%5000 F ipe 'upport 'tandard
.1.4 A5155(5'5000 F ipe 'upport %esign 'pecification
.1. A5155(52250001 F -ritical 2ine 2ist
/./ Re"ere+'e Coa+% Do'ue+t!
..1 A)'503 F nfired ressure #essels.. A)'50 F 'teel iping %esign &abrication and (nstallation
..3 A)'508 F iping +aterials
..4 A)'518 F 'ite -ondition and -limate
.. A)'50 F 'hell and Tube eat $=changer
.. A)'51 F Air -ooled eat $=changer
/.3 Co#e! a+# Sta+#ar#!
%esign and analysis of the piping shall be in accordance 7ith follo7ing codes.
A'+$ B31.3 rocess iping
A'+$ B31.4 ipeline Transportation 'ystems for 2i@uid ydrocarbons and"ther 2i@uids
A'+$ B31.8 )as Transmission and %istribution iping 'ystems
A( ! 14$ !ecommended ractice for %esign and (nstallation of "ffshore roduction latform iping 'ystems
(n addition to A'+$ B31.3 B31.4 B31.8 E A( ! 14$ and its sub5referencesfollo7ing codes shall also govern the design and installation of some parts of apiping system and the connected e@uipment.
A'+$ B1. ipe &langes and &langed &ittings
A'+$ B1.4 2arge %iameter 'teel &langesA( ! 0 'i?ing 'election and (nstallation of ressure !elieving %evices
in !efineries art (( 5 (nstallation
A( ! 1 )uide for ressure !elieving and %epressurising 'ystems
A( ! 8 !ecommended ractices for +achinery (nstallation and(nstallation %esign :-hapter F iping6
A( 10 -entrifugal umps for etroleum etrochemical and *atural)as (ndustries
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A( 1 A=ial and -entrifugal -ompressors and $=pander -ompressorsfor etroleum -hemical and )as (ndustry 'ervices
A( 18 !eciprocating -ompressors for etroleum -hemical and )as
(ndustry 'ervices.
A( 0 Celded 'teel Tan
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f6 To chec< the lea and above connected to !otating machinery such aspumps centrifugal compressors gas turbines fans and blo7ers
g6 All process lines connected to !eciprocating compressors and pumps
h6 All lines process connected to 'pecial items of e@uipment 7hich have lo7allo7able loads specified by the e@uipment #endor
i6 All process lines connected to Air5cooled e=changers :fin fans6
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H6 All process lines connected to 'hell and Tube eat $=changers late eat$=changers rinted -ircuit eat $=changers and Caste heat !ecoverynits :C!6
E above only
n6 Thin 7all large bore pipe i.e. schedule 10 and belo7 and 18 and above.
o6 2ines containing e=pansion devices such as bello7s :only if applicable6
p6 )as or vapour lines including the flare system in 7hich li@uid slugs mayform and cause high impact loads at valves bends tees or vessels.
@6 2ines liable to e=treme terminal and support deflections and rotationscaused by dec< movement
r6 #acuum and e=ternally pressurised lines including those liable to transiente=ternal pressure conditions.
s6 2i@uid blo7 do7n piping not including drain lines.
t6 2ines 7hich the stress engineer considers re@uire special attention but7hich are not critical by the above definitions.
u6 !iser lines and process lines connected to 2aunchers / !eceivers
v6 All lines running on the platforms lin
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.0 STRESS ANALYSIS DESIGN CONSIDERATIONS
.1 Analysis shall be carried out at the design : ma= and/or min6 temperatures andcoincident %esign pressure conditions of the selected lines. Chere this 7ill lead toan over5conservative design operating conditions :operating temperature andpressure6 of the system shall be used in the analysis. The ambient temperatureshall be 3I- ma=imum and I- minimum as per section 4.0 of A)'518 and solarradiation metal temperature shall be 80I-.
./ 'upport friction shall be considered for the analysis and the coefficient of frictionshall be ta
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.7 $r)#e ))+
Three bridges are lin
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unless specified other7ise 7hich is dependent on velocity and pipingcomponent type. This case is re@uired to be done mainly to design the pipesupport structure for slug load and to chec< the stress in the piping systemdue to slug load.
f6 ydrostatic test caseDThis is to verify the stress occurring during testing as7ell as to establish the ma=imum loads that need to be supported by thedesigned pipe support/structure.
g6 'urge case analysisD'urge analysis as applicable and as re@uired 7ill becarried out by the third party agency. The unbalanced forces as provided bythe surge specialist 7ill be used in the -A$'A! analysis to calculate thestress and support loads.
h6 Blast load caseD Analysis shall be carried out as applicable. The drag forces as provided by the 'afety group 7ill be used in the -A$'A! analysis to asses the stress and support loads.
Transportation -aseD 'eparate transportation analyses shall be carried outta
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300 to 3== -" !emoval 'ystem iping
400 to 4== *)2 $=traction iping
00 to == 'ales )as -ompression iping
500 to 5== -ondensate 'tabili?ation iping
700 to 7== #! -ompression iping
600 to 6== &ire Cater iping
=00 to === tility and other iping
NAN$ etc. *ormal case -alculation se@uence
$A$$ etc. Blast case -alculation se@uence
TAT$ etc. Transportation case -alculation se@uence
R1 D1 D/etc.!evision number
5.1 Prearat)o+ o" Stre!! I!oetr)'!
'tress isometrics 7ill be e=tracted from %+' and they shall be numbered asfollo7s.
ACF-STISO-1101
The four digit number sho7n as a last entry in the above numbering shall be sameas the four digit number used for the stress calculation file.
All restraints acting on the piping shall be clearly indicated using standard legendsfound in Appendi=54.
'ufficient nodes must be sho7n to allo7 a third party to navigate around thesystem 7hen reading the dra7ing in conHunction 7ith a -A$'A! (( input listing.
5./ Ma!ter Stre!! I!oetr)'!
A master file of stress isometrics shall be maintained and agreed changes signed
and dated.
5.3 I+ut ")*e Ha+#*)+
(nput files shall be electronically archived on completion of each calculation. "nly the files 7ith a KA and KL trailer need to be
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The preferred format of stress analysis report is as follo7sD
-ontents 'ummary and calculations system and analysis description -ritical linelist and stress isometric inde= stress iso data and calculations )eneral andcalculations.
The preferred format is to e=clude computer output from -A$'A! (( and to supply7ith disc copies of all input files from 7hich output can be generated if re@uired.
7.0 PIPE SPPORT DESIGN
'tress engineer shall revie7 in5line support details. The revie7 must ensure thatthe supports and restraints are fit for purpose for e=ample 7hether restrainedalong the correct a=es support re@uirement for concentrated loads
'tandard support details shall be used 7herever possible to suit the dec< steel7or
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*o??le loads on ori?ontal $nd 'uction -entrifugal umps and #ertical (n52ine-entrifugal umps in accordance 7ith A'+$ B3.1 and B3. shall also be tBot)e!the values given in table54 of A( 10 Gth $dition.
'hould there be a re@uirement for increased no??le allo7able forces or moments inany one or more directions at the detailed engineering stage the same shall bemutually discussed and agreed bet7een the #endor and -ompany.
&or pump no??le si?es above 1> -ompany 7ill provide the forces and momentsat the pump no??les based on the stress analysis of the system for revie7 andacceptance by the vendor.
6./ Ce+tr)"ua* Core!!or! Tur@o Ea+#er Core!!or!
The loads on -entrifugal -ompressor and Turbo $=pander -ompressor no??lesshall be in accordance 7ith *$+A '+3 'ection 8.4. formulaeO ho7ever the
constants in formulae shall be increased by a minimum factor of 4
'hould there be a re@uirement for increased no??le allo7able forces or moments inany one or more directions at the detailed engineering stage the same shall bemutually discussed and agreed bet7een the #endor and -ompany. *et resultantsof combined forces and moments shall be resolved at the suction :larger6 no??le inthe case of a t7o5no??le machine. The e@uivalent no??le diameter %c shall bebased on the nominal no??le outside diameters.
6.3 VR S%!te Re')ro'at)+ Core!!or Pa'(ae
#endor shall inform the desired minimum mechanical natural fre@uency to be
established for the entire #! piping system starting from suction scrubber inletlines up to the discharge scrubber outlet lines.
The piping 7ithin #! compressor pac
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not achievable by the -ompany the loads 7ill be provided to the vendor. #endorshall re5analyse the vessel for ne7 loads to verify and ensure that all stresses are
still 7ithin the allo7able limits 7ith suitable modification if any on the vessel.
8.4.3 (f component and resultant e=ceed the allo7able loads piping and / or restraints 7ill be modified to comply 7ith values given in Appendi=5 of A)'503. (f this proves to be impractical -ompany 7ill provide the loads for revie7 and acceptance by the vendor for suitable modification if any on the vessel.
8.4.4 The locations and loading for pipe support clips on the vessel and/or serviceplatform 7ill be furnished separately during the detailed engineering stage7hich shall be verified by the #endor for the stresses and other aspects of vesseland service platform design.
6. S&e** Tu@e Heat E'&a+er! Dou@*e P)e T%e Heat E'&a+er! P*ateT%e Heat E'&a+er! Pr)+te# C)r'u)t Heat E'&a+er
$=ternal loads applied to no??les of shell E tube heat e=changers %oublepipe type heat e=changers late type heat e=changers and rinted circuit heate=changers shall normally be limited to the values given in Appendi=5.$=ternal &orces and +oments given in Appendi=5 are to be applied atno??le / shell intersection simultaneously. 'ections 8.4. 8.4.3 E 8.4.4 areapplicable here also.
6.5 A)r Coo*e# Heat E'&a+er!
Allo7able loads shall be three times the values given in A( 1 Table 4. 'houldthere be a re@uirement for increased no??le allo7able forces and moments in anyone or more directions at the detailed engineering stage the same shall be
mutually discussed and agreed bet7een the vendor and -ompany.
(f pipe support clips are re@uired on the cooler service platforms locations andloadings for the clips 7ill be furnished separately during the detailed engineeringstage 7hich shall be verified by the #endor for the stresses and other aspects ofplatform design.
6.7 Ta+(!
nless agreed 7ith -ompany the allo7able no??le loads for flat Fsided storagetan Metr)' +)t! ?
*o??le'i?e
%irect 2oads :*6 +oment 2oads :*5m6
& A=ial & 'hear + Torsion + Bending
1 P> 0 0 10 10
> 0 0 10 10
3> 100 000 0 40
4> 000 3000 1400 0
> 3000 000 3000 000
8> 300 000 400 3000
*otesD
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16 All loads stated above act at the tan< plate / no??le intersection and are to beassumed to act simultaneously.
6 The #endor shall provide sufficient local reinforcement to ensure that the stressdue to pressure head radial load and applied moment does not e=ceed 1. timesthe allo7able design stress for the plate.
36 &or no??les e=ceeding 8> *.B allo7able loads shall be agreed 7ith the -ompany.
6.6 9a!te Heat Re'over% +)t
Based on the analysis$ngineering -ontractor 7ill provide loads :forces andmoments6 imposed by piping at eating +edium inlet and outlet no??les of Casteeat !ecovery nit :C!6 for revie7 and acceptance by the #endor.
6.= Pa'(ae# +)t!
8.G.1 ac
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'upports are to be provided close of flange Hoints 7here heavy concentrated loadsoccur. A revie7 7ill be done by the stress engineer for these types of supports.
ressure design of flanges shall generally be in accordance 7ith section 304. ofA'+$ B31.3. "perating pressure shall be considered for the purpose of flange lea)+?
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APPENDI:-/ ; E:TERNAL FORCES AND MOMENTS ON NO88LES >Co+t#?
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APPENDI:-/ ; E:TERNAL FORCES AND MOMENTS ON NO88LES >Co+t#?
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*o??le 2oads for si?es above 30> shall be mutually agreed bet7een -ompany and #endor.
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PTTEP Art&)t F)e*# Deve*oe+t Do'. No. A-1-PP-PI-SP-0003 Rev. $1Ce+tra* Fa')*)t)e!P))+ Stre!! A+a*%!)! Se')")'at)o+ Pae /1 o" /3
APPENDI:- 3 ; 9IND LOADING DATA
As per Arthit )eneral 'pecification A)'518 :'ite -onditions and -limate6 the 100 year return
Cind speed :3 second )ust6 at 10m above 2AT :2o7est Astronomical Tide6 is m/sec.
The corresponding 7ind speed at other elevations :Q6 are estimated using theformula #QR#10:Q/106
0.1
Cind load is applied as uniform force along the pipe
Cind force per unit length & R - f@% */mm
Chere
% R "utside diameter of the pipe mm
@ R %ynamic pressure of the 7ind R S#/ */m
-fR 'hape factor or $ffective force co5efficient
# R Cind 'peed m/sec
S R %ensity of air R /!T ,g/mU
R Atmospheric pressure R 1013G.1 */m
T R Average air temperature R GI- as per Table 4.1 of A)'518
! R )as constant for air R 8.138 *5m/,g5I,
Air %ensity at GI- R 1013G.1/V8.138=:GW36X R 1.1G3 ,g/ mU
9)+# Pro")*e @a!e# o+ 100 %ear retur+ )+terva* 3 !e'o+# Gu!t
E*evat)o+
9)+#
See#!e'
9)+#
Pre!!ureN
. 111.4
10 .0 18GG.
1 G.8 0G0.
0 1.G 40.1
3. 34.G
30 .0 40.1
3 . .
40 .3 48.0
4 8.3 .3
0 G.1 G1.
As per B' -3 -hapter # art values of shape factor -ffor pipe sections are as follo7s.
F*oB Re)e DV Va*ue C"
'ubcritical flo7 %# Y m/sec 1.
'upercritical flo7
Z %# Y 1 m/sec 0.
1 Z %# Y 33 m/sec 0.
%# [ 33m/sec 0.8
The above 7ind profile and shape factor values shall be used in -A$'A! (( ipe 'tress
analysis. The M\9 co5ordinate to be
-
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PTTEP Art&)t F)e*# Deve*oe+t Do'. No. A-1-PP-PI-SP-0003 Rev. $1Ce+tra* Fa')*)t)e!P))+ Stre!! A+a*%!)! Se')")'at)o+ Pae // o" /3
APPENDI:- 4 ; TYPICAL RESTRAINT SYM$OLS SED IN STRESS ISOMETRICS
anger 'upport !est 'upport !est 'upport 7ith old %o7n
anger 'upport 7ith ipe)uide
!est 'upport 7ith ipe)uide
!est support 7ith old %o7nE ipe )uide
anger 'upport 7ith ipe
A=ial 'top
!est 'upport 7ith ipe
A=ial 'top
!est 'upport 7ith old
%o7n E ipe A=ial 'top
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PTTEP Art&)t F)e*# Deve*oe+t Do'. No. A-1-PP-PI-SP-0003 Rev. $1Ce+tra* Fa')*)t)e!P))+ Stre!! A+a*%!)! Se')")'at)o+ Pae /3 o" /3
APPENDI:- 4 >Co+t#.?
TYPICAL RESTRAINT SYM$OLS SED IN STRESS ISOMETRICS
ipe )uide E A=ial 'top !est support 7ith ipe )uideE A=ial 'top
!est support 7ith old %o7n ipe )uide E A=ial 'top
'pring 'upport
:edestal type6
'pring 'upport 7ith
ipe )uide
'pring 'upport
Cith A=ial 'top
'pring 'upport Cith
ipe )uide EA=ial'top
'pring hangersupport
:anger type6
'pring hangersupport 7ithipe )uide
'pring hangersupport 7ithA=ial 'top
'pring hangersupport 7ith ipe
)uide E A=ial 'top