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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