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Scope of ASME B31.4
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Scope of ASME B31.4
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Scope-Piping
Includes
Pipe
Flange
Bolting
Gasket
al!es
"elief de!ices Fittings
#angers and supports
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$oesnt include
Fra%es of &uildings
Stanc'ions Foundations
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Includes
Pri%ar( and associated au)iliar( li*uid petroleu% andan'(drous li*uid a%%onia piping at pipeline ter%inals+%arine,rail, truck, tank far%s, pup% stations and
%etering stations including scrper traps, strainers andpro!er loops
Storage and orking tanks including pipe t(pe storagesfa&ricated fro% pipes and /ttings and pipenginterconnecting t'ese facilities
0i*id petroleu% and li*uid an'(drous a%%onia pipinglocated on propert( 'ic' 'as &een reser!ed for pipingit'in t'e re/ner(,gas processing, natural gasoline,a%%onia and &ulk plants
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$oesnt appl( to
Au)iliar( pipings suc' as ater, stea%,fuel, air, lu&icating oil, and gas
Pressure !essels, 'eat e)c'angers, pu%ps, %eters and ot'er suc' e*uip%entsincluding onternal piping and connections for pipings e)cept as li%ited &( para423.2.4 +&
Piping designed for internal pressures or 15 psig
Piping designed for internal pressures 6 15 psig and and design te%perature -37 8 or 6127 8
8asting, tu&ing and pipes used in oil ells, ell'ead asse%&lies oil and gasseparators, crude oil production tanks and ot'er production facilities
Petroleu% re/ner(, natural gasoline, gas processing, a%%onia, and car&ondio)ide processing and &ulk plant piping e)cept as co!ered in 477.1.1 +c
Gas trans%ission and distri&ution pipings $esign and fa&rication of proprietar( ite%s of e*uip%ent, apparatus or
instru%ents,e)cept as li%ited &( para. 423.2.4+&
A%%onia refrigeration piping
8ar&on dio)ide gat'ering and /eld distri&ution s(ste%s
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8'apter II 9 $esignPart-I: 8onditions and criteria
8onditions
Pressure:
Internal design pressure- s'all not &e less t'an %a)i%u% stad( stateoperating pressure
%a)i%u% stad( state operating pressure static 'ead;pressure re*uired
to o!erco%e frictional losses;an( re*uired &ack pressure E)ternal design pressure- designed to it'stand %a) possi&le diuences,>uid e)pansion e
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$esign criteria
Pressure te%perature criteria-for piping co%ponents'a!ing speci/c ratings, it'in t'e %etal te%peratureli%its of -378 and 127 8 t'e %etal s'all confor% to
t'ose stated for 47 8 in ta&le 423.1 Alloa&le stress, S 7.@2 ) E ) speci/ed %ini%u%
strengt' of t'e pipe+Mpa
E eld oint factor
Alloances for corrosion,t'reading and groo!ing, eld
oint factors and all t'ickness and defect tolerences
Fracture propagation in 8ar&on dio)ide lines
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For straig't pipe under internal pressure, t Pi ) $ 27S
8ur!ed seg%ent of pipes
Intersections
Attac'%ents
Flanges
"educers
al!es
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Part 4: Selection and li%itation ofpiping oints
Part 5: E)pansion,>e)i&ilit(,structural attac'%ents,supports and restraints
Part C: Au)iliar( and ot'er speci/c
piping
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8'apter-3Materials
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8'apter 4- di%ensional re*uire%ents
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8'apter 5: construction, elding andasse%&l(
8'apter C: Inspection and testing
8'apter @: Dperation and%aintenance procedures
8'apter : 8orrosion control
8'apter : o