15-LH-1002

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SSUED FOR

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7

MAR

94

17 JUN 94

-/-:

SSUED

AS KOC ENG.

GROUP

SPEC.

(éJ.

Ê.

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KUWAIT

OIL

COMPANY

(K.S.C.}

EngÍneerÍng

Group

SpecifícatÍon

Number

ot

6-LH-t

002

Píping Design

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L

o

o

N4

CONTENTS

1.0 scoPE

3

4

5

2.O

CODES,

STANDARDS

AND

SPECIFICATION

3.0

UNITS

OF

MEASURE

4.0 GENERALREOUIREMENTS

......

5

5.0

VALVES

6

7

I

9

6.0

P¡PING

.

7.O

FIANGES

8.O

FITTINGS

9.O GASKETS

9

10.o

BotTlNG

.9

11.O

SUMMARY

....10

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016-LH-1002

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1.0

SCOPE

1.1

This specification

covors

the

design,

manufacture,

inspection,

testing

and

supply

of

piping

mater¡als

for

installation

at the

Fac¡l¡ty

in

Kuwait.

1.2

The

piping

design

shall

fully comply

with

all

relevant

contractual

requiremeñts

speóitied

in

the

Scope

of

Work

and

Technical

Specification

of the

Contract.

1.g

The Contractor

shall

prepare

detailed

piping

material

classes

based

on

the

requirements

of this

speciflcatlon

and

the

requirement

of

the

Engineering

Group

Specificatlon

entitled

"Piping

Material

Classes"

(Number

OtS-Un-tOOtl.

The

Contractor's

specifications shall

require

CompanY

aPProval.

1,4

The

piping

class

shall consist

of four

characters:

ê.9.,

Cl5A'

1.4.1

The f¡rst

character

indicates

matsrial

type:

Plastic

Lined

Stainless

Steel

Reinforced

Thermosetting

Resin

Pipe

Carbon

Steel

1.4.2

The

second

character

indlcates

flange

rat¡ng:

Class

15O0LB

Class

9OOLB

Class

6OOLB

Class

300L8

Class

150L8

1.4.3

The

third

character

ind¡cates

corrosion

allowance:

4.5 mm

3.0

mm

1.5

mm

0.0

mm

1.4.4

The

fourth

character

indicates there

classes:

e.9.,

C15A

+ Cl58.

two

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1.5

This specification is

also appllcable

to

piping

of

packaged

units.

2.O CODES,

STANDARDS

AND

SPECIFICATION

2.1 Piping

materials shall conform

in

design,

materials

and

performance,

except

where

otherwise

specified,

with the

current

issue

and

amendments

of the

following

codes,

standards

and

specifications

prevailing

on

the effective

date of the

Contract:

2,1.1

lnternational

Standards

ASME

831.3

Chemical

Plant

and

Petroleum

Refinery

Piping

ASME

831.4

Liquld

Transmission Systems

f

or

Hydrocarbons,

Liquid

Petroleum

Gas,

Anhydrous

Ammonia and Alcohols

ASME

831.8 Gas

Transmission

and

D¡stribution

Piping

Systems

2.1.2

Company Standards

STD 381

lO21lO2

Supply

of Plug

Valves

for

Use

in

Moderate

or

Severe Corrosive Service

DES.L-o13

Supply

of

Ball Valves

for Use

in

Moderate or

Severe Corrosive Service

STD

381/027

Corrosion

Protection for

Piping

Systems

2.1

.3

Engineering Group Specifications

Piping design and materials covered

by

this

specification

shall

comply

w¡th all

relevant Engineering Group

specifications

of

which

the

following

are

specifically

referenced

in this

specification:

015-AH-1O02 lnternationalCodesand

Standards

01S-LH-1001

Piping

Material Classes

2,2

Gompliance

with this

specification

shall

not

relieve

the Contractor

of

its

responsibility to

supply

mater¡als

suited

to

meet

the

service

conditions

and applicable

regulations.

2.3

Where

conflicts exist

between

this

specificatlon

and

other

Drawings,

standards, codes

and

specifications, the

shall

be

applied.

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2,4

For

a

complete

list

of

all

standards

and

codes

to

be

used

on

this

Contract

refer

to

Engineering

Group

Specification

entitled lnternational

Codes

and Standards

(Number

015-AH-10021.

3.O

UNITS

OF

MEASURE

The metric

units

of

measure

shall be used

throughout

with the

following

exceptions:

3.1

Watl thicknesses

ars

oxpressed

as

a

schedule

number

or

where

no

schedule

number

exists,

in

inches.

3,2

Nominal pipe

size

(NPSI

expressed

in

inches.

3,3

Flange

bolt

diameters

and

length

expressed

in

inches.

3.4

Nominal

pressure

ratings for

flanges,

valves,

socket

weld

and

threaded

fittings, etc,

are

expressed

in

pounds

(e.9.,

Class

1sOLB, series 3O00LB,

etc.).

4.0

GENERATREOUIREMENTS

4.1 Minimum design

pr€ssure

for any

piping

system

will

be

50

psig.

4.2 For

purposes

of

design as

per

ASME

831.3,

this

Facility shall

be

considered

as a

cyclic

plant.

4.3

Formal

flexibility

analysis

of

all

piping

systems

shall be

carried

out

in

accordance

with

ASME

831.3, and

results

shall

be

made

available to the

Company

for

review

as

required.

Piping systems shall

be

adequately

supported/anchored/guided

to avoid undue

vibration, deflection

and

stresses on

piping

loads and equipment.

Process

piping

shall

not

be

used to

support equipment

or

place

undue stresses

on equipment

flanges,

etc.

Pipe

shall

not

be supported

through

flanges.

4.4

A minimum

corrosion

allowance

of

1.5

mm

or greater,

if

required

by

the

piping

material

classes, shall

be

provided

for

all

piping

components

for

process

systems

except

stainless

steel

piping.

For

stainless steel

piping

components,

no

corrosion

allowance

shall

be

provided.

4.5

The

pressure

and

temperature

limits shown

in

Company

piping

mater¡al

classes

are

based

on flange

design

conditions

per

ASME

816.5 or

as

noted

otherwise.

The

Contractor

may

rationalise

these

to suit

actual

maximum

design

conditions of

services.

4.6

All lines

connecting

to another

line

or

header,

including

instrument

connect¡ons,

vgnts

and drains,

are considered

connections.

Branch

connect¡ons

shall be specified

in

a

b

table that

accompanies

each

piping

class.

The ure

that

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propr¡ety branch

fittings,

e.9., weldolets,

shall

be in

fullcompliance

with

the

requirements of ASME

831.3.

4.7 Post

weld heat

treatment

{PWHT}

shall be

carried

out

as

required by

ASME

831.3.

4.8

Metall¡c

piping

up to

1Yz-ln.

nominal

bore

(NBl

will

be socket-welded

type

or screwed.

All

screwed

connections

in hydrocarbon

service

shall

be

seal welded up

to

the

upstream

side of

the

first

block

valve

or

¡nstrument root

valves.

When

used,

threaded

connections

shall

be

as

per

ASME

81.2O.1.

Screwed

steel

plpe

in

process

services

shall

be

minimum schedule

80.

The

first

instrument isolation

valve(s)

on

vessels/equipment shall

be

flanged

with

a

minimum

of

2-in.

NB.

4.9

Nominal

pipe

sizes

1Tt in.,2Yz in.,SYz

in.,5

in.

and

any

other

nominal

pipe

size not

shown

in ASME 836.1O,

shall

not

be

used

except to

match

the

Approved Manufacturer's

equipment

connections.

Where

a

non'

preferred

connoct¡on

is encountered, the

mating

pipework

shall be

increased immediately

to

the

next

acceptable

size.

Non-standard

classes,

e.9.,

40OLB,

shall not

be

utilized

in

the

Facility.

4.1O

Epoxy

lined

piping

shall

be

internally coated

with

tar

epoxy

to a

minimum

thickness

of

3O0 microns.

5.0 VALVES

5.f

All valves, wherever

applicable,

shall

bear

API or

BS monogram.

Cast

carbon steel/stainless

steel

gate

valves shall

conform to

the

requirement

of

either

API

6D,

BS

1414,

API

600,

and

forged carbon

steel/stainless

steel

gate

valves

shall

conform

with

API 602.

5.2

Globe

valves shall

conform

to

BS

1873,

check

valves to

BS

1868,

and

butterfly

valves to

AP¡

609/8S

5155.

Globe

and check

valves

1Yz

in.

and below shall

conform to

BS

5352 and

plug

valves

to

API

599/BS

5353

and

381

lO21lO2

Company

Standard.

5.3

Full-bore ball

valves

as

per

Company

Standard

DES-L'OI3

are

to be

used for

hydrocarbon

gas

service and

on crude oil

inlet

manifolds.

5.4

Block

valves

shall

be as

shown on

P lDs.

5.5 Globe

valves

shall be used

for

all

throttl¡ng service

and control

valve

bypasses.

5.6

Manual

gear

operators

shall be

provided

for

globe

valves

in

the

rat¡ngs and sizes

listed

opsrated

gate

and

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016.1H-1002

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4

in. and

larger

lass

15OO

4

in. and

larger

lass

900

6

in.

and

larger

lass

600

10

in. and

larger

lass

30O

12 in.

and

larger

lass

15O

Sizeating

5.7

Gear

operators

shall

be

provided

for

ball

valves

in

the

sizes

listed below:

4 in. and

larger

lass

15OO

4

in.

and

larger

lass

900

6

in. and

larger

lass

600

6

in.

and

larger

lass

300

6

in. and

larger

lass

150

Size

atlng

5.8

All

butterfly valves

I

in.

and

larger

shall

be

provided

with

a

gear

operator.

5.9

All butterfly

valves

with

soft

seat¡ng

utilized

ln the

Facility

shall

be

of

firesafe

design

and

certified as

per

API

607.

All

other

valves shall

be

tested as

per

API

598/BS

5146

and

BS

6755.

5.1O

Valves in

classes

150

LB

and

300

LB

16 in. and

larger,

and

in classes

600

LB

and

higher

I

in. and

larger

may be

motor

operated.

6.0

PIPING

6.1

All fire

water

and

foam

piping

shall be constructed

of

flanged

carbon

steel

components

internally

lined

with

epoxy

and

externally

coated

and

wrapped

for

underground

service.

ln sizes

1

in.

and

below,

for

drains,

etc.,

pipe

and

piping

components

shall

be carbon

steel

with

the

heavier

corrosion allowance

of 3.0

mm.

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6.2

Minimum

pipe

wall

thickness shall

be:

Above

2

in.

NB

chedule lOS

Up to 2

in.

NB

chedule

4OS

For

SS

Plper

Above 12 in.

NB

chedule

2O

3 in. to

12 in.

NB

tandard

Weight

(STD

WTI

up to

2 in. NB

xtra

Strong

(XS)

For

CS

Plper

6.3

Mlnimum

pipe

wall

thickness

of RTRP

shall

be

determined

per

the

Engineering

Group Specification

ent¡tled'Piping

Material Classes,"

Attachment |

(Number

015-LH-1001

).

6.4

Pipe schedules 5S,

60, 1OO and

14O

shall

not

be

used.

7.O

FTANGES

7.1

Flanges

24

in.

and smaller

shall be

ln

accordance

w¡th ASME

816.5.

Flanges

26 in.

and larger

shall conform

to

ASME

816.47

Series

A.

7.2 Flat-faced

flanges

shall

only be used

when

mating against

non-ductile

materials, e.9., bronze

or

RTRP.

7.3

Orifice

flanges shall be supplied

with

flange

taps

and

iackscrews

and

shall

have

tappings

in

accordance

with ASME

816.36 as

follows:

7.3.1

Yz

ln.

fo¡ flanges

up

to

Class 600.

7.3.2

lt

in, tor

flanges

above Class 600.

7.4

The gasket surface finish on all

raised-face

flanges

(weld

neck, socket

weld, blind

flanges, spectacle

blinds,

etc.)

shall

be dependant

on

the

gasket

type

as

follows:

7.4.1'For

CAF

gaskets,

finish

per

ASME 831.3 stock

finish with a

roughness ol

125

to 500

microinch.

7.4.2 For

spiral

wound,

gaskets

finish

per

ASME

831.3

with

a

roughness

o1

125 to

25O

microinch.

7.5

Permanent

blinds, spectacle

blinds, ring s

shall be

in

I

I

/-

irÌ

I

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accordance

with

API

590 for

sizes

be

determined by

the

Contractor.

nsions

shall

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7.6

Jack screws shall be

provided

at

blind

or

spacor locations

per

the

following:

7.6.1

150L8 and

30018

flanges:

6

in.

and

larger.

2 in.

and

larger.

.6.2

600L8,

90OLB

and

1500L8

flanges:

8.0

F¡TTINGS

8.1

Reducing

fittings,

e.g.,

reducers, swages,

tees-olets

etc.,

may

have

differing

wall thicknesses

at th€

ends

relating

to

the different

sizes.

Components

shall

be

specified

with

ends

to

match the

pipe

wall

thickness or

to

match

the

heavier

wall.

8.2

Butt-weld

elbows

shall

be

long-radius

type. Short-radius

elbows are

not

preferred

and

shall

only

be

used

where

space considerations

dictate,

and

only

with

CompanY

aPProval.

8.3

Welded

f¡tt¡ngs

in

accordance

with

ASTM

A234 shall be

subiect to

100016

radiography

of

welds.

8.4

Either ssamless

or

welded

pipe

may be

formed

into

pipe

bends,

excepting

that

furnace

butt-welded

type

shall

not

be

used.

lt ¡s

preferabló

to

use

pipe bends

for

sizes

1Yz

ln. and below

in

place

of

welding

elbows.

When

used,

bending

radius

shall

be a

minimum

of

five

times

the

nominal

PiPe

diameter.

9.0

GASKETS

9.1

Compressed

asbestos

gaskets

shall

be

used

for

all services

in

1

50LB

and

3O0LB

classes.

Spiral

wound

gaskets

with

asbestos

filler

shall

be

used

in 600L8

and

higher

classes.

9.2 Compressed

asbestos

gasket

shall

be

1/16-in.

thick-ring

type.

Spiral

wound

gaskets

shall

be 1/8

in.

thick

and

have

inner

rings

to

suit

service

conditions

and

outer

rings

of

carbon steel

mat€r¡al.

9.3

Gaskets

made

of

compressed

asbestos

shall

be

free

of

graphite.

10.0

BotTlNG

10.f

All bolting

for

fluid

design

temperature

from

-29oC

to

200oC

shall

be as

a minimum

ASTM

A193

Gr.B7

studs

with ASTM

A194

Gr.

2H nuts'

1O.2 ln

piping

classes

where bolts are

buried,

insulated,

under

flange

,ì

protectors,

or

otherwise

deprived

of

d

shall

be

to

ASTM

4193

Gr.B7M

with

10.3

All

bolting shall

be electro-zinc

plated

contact,

bolting

194

Gr.2M.

ASTM 8633.

@W[,' ffi:*'

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17-6-94

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1

1.0

SUMMARY

Except as

restr¡cted

or

amplified

in sections

I to

11

inclusive,

piping

material

specifications

sat¡sfying

service conditions

and code

requirements shall

be

developed

by

the Contractor and submitted

for

Company approval

prior

to

incorporation

into

the

Facillty.

The

Contractor

shall

comply

with the

Engineering Group

Specification entitled

Piping

Material

Classes

(Number

015-LH-10O1)

to develop

a

detailed

piping

material specification.

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Nî2.0088

Documents

15-LH-1002