Piping material specification

[reni_shin2]

PIPING
MATERIAL SPECIFICATION












J-Gulf JOB CODE : G-K024-00-0000
J-Gulf DOC No : S-000-1360-076
PCWBS : 0000


















TABLE OF CONTENTS

1.1 SCOPE 4
1.2 DEFINITIONS 4
1.3 CONFLICTS AND DEVIATIONS 4
1.4 UNITS 4
1.5 PIPING LINE CLASS DESIGNATOR SYSTEM 4
2 GENERAL NOTES 5
2.1 GENERAL 5
2.2 SERVICE LIMITS AND PIPE WALL THICKNESS 5
2.3 THREADS 5
2.4 THREADED PIPING SYSTEMS 5
2.5 JOINTING OF SMALL BORE PIPES 6
2.6 BENDS AND ELBOWS IN SMALL BORE PIPING 6
2.7 PRESSURE 6
2.8 PIPE 6
2.9 FITTINGS / FLANGES 7
2.9.1 Swaged Nipples 8
2.9.2 Nipples 8
2.9.3 Unions 8
2.9.4 Flanges 8
2.9.5 Spectacle Plates, Blind and Spacers 10
2.10 GASKETS 10
2.11 BOLTS 10
2.12 FABRICATION 11
2.13 PWHT 11
2.14 BRANCH REINFORCEMENT 11
2.15 BURIED PIPING 11
2.16 VALVES 11
2.17 DISSIMILAR METAL CONNECTIONS 13
2.18 AUXILIARY PIPING FOR MECHANICAL EQUIPMENT 13
2.19 VENTS AND DRAINS 13
2.20 VALVE TRIM NUMBER 14
2.21 PAINTING & INSULATION FOR PIPING 14
3 LIST OF PROJECT & REFERENCE STANDARDS 14
3.1 REGULATIONS, CODES & STANDARDS 14
4 Abbreviations 16
5 GENERAL REQUIREMENTS 21
5.1 DESIGN LIFE 21
6 TECHNICAL REQUIREMENTS 21
6.1 MATERIALS 21
6.2 PIPING CLASSES 21
7 HOLD ITEMS 22




ATTACHMENTS


ATTACHMENT - 1: PIPING CLASS SUMMARY………………………………………..24

ATTACHMENT - 2: WALL THICKNESS TABLE…………………………………………26

ATTACHMENT - 3: SERVICE LIMIT SUMMARY………………………………………..27

Appendix 1…………………………………………………………………………………….28


1. INTRODUCTION

1.1 Scope

This specification describes the general and technical requirements for the piping, including valves, for the development of “Construction of WTF-3 and Khafji Ratawi WIF projects” for Al Khafji Joint operations (KJO). The project piping classes utilize the Saudi Aramco Desktop standards, the Saudi Aramco Engineering Standards (SAES) and the Saudi Aramco Material System Specifications (SAMSS).

The following systems are excluded from the scope of this document:

• Instrumentation and tubing downstream of the last piping isolating valve
• Sub-sea pipelines and valves. Refer to P & ID’s for boundaries
• Wellhead valves and equipment
• All flexible hoses
• Scraper stations and related appurtenances
• Any specialty items marked on P & IDs

1.2 Definitions

The following definitions are used for the purpose of this specification:

Company Al Khafji Joint Operations (KJO)
Company Representative Any agency, consultant or contractor acting on behalf of KJO
Inspector KJO Approved Third Party Inspection Agency
Project Data Sheets Governing technical documents for the specific item(s) for purchase
Project Drawings Reference drawings for the specific item(s) for purchase
Purchaser Not applicable
Vendor Vendor of Equipment, including Sub-Vendor(s) appointed by the Vendor to carry out part or all the work

1.3 Conflicts and Deviations

Any conflicts or deviations between the specifications and other documents listed herein, or industry standards, codes, and forms shall be resolved in writing with the Company.

1.4 Units

The Units of Measurement shall be in accordance with SAEP-103 Metric Units of Weights and Measures.

1.5 Piping Line Class Designator System

Line class designation shall be as per SAES-L-105 Piping Material Specifications.

2 GENERAL NOTES

2.1 General

• This standard has been produced using the American National Standard Code for Pressure Piping – Process Piping, ASME B31.3.

• Charpy impact testing shall be carried out on all carbon steel pipes and wrought piping components, irrespective of material grade, with a wall thickness greater than 25mm (Min. temp for carbon steel piping class set at 0 deg. C). Testing shall be in accordance with ASME B31.3 with impact values being 34J min average and 27J min individual for a standard 10mm x 10mm specimen. Impact testing shall be carried out on base material, weld deposit and HAZ.

• The use of any piping materials containing asbestos is prohibited. Asbestos free substitutes shall be specified for all valve stem packing and gaskets.

2.2 Service Limits and Pipe Wall Thickness

• The pressure and temperature limitations specified in ATTACHMENT -3: SERVICE LIMIT SUMMARY are the maximum design conditions of the piping components in individual piping classes.

• Pipe wall thicknesses of all piping components specified in individual piping class are calculated in accordance with ASME B31.3 based on the internal design pressure and design temperature as the service limit specified in ATTACHMENT -3: SERVICE LIMIT SUMMARY and corrosion allowance specified in ATTACHMENT -1: PIPING CLASS SUMMARY for the individual piping class incorporating the requirements specified in Para.10 of SAES-L-310.

• The wall thickness calculation does not account for any additional loadings imposed such as thermal loads due to restraints, live loads and other loadings than those provided in ASME B31.3.

2.3 Threads

All threaded connections shall have taper threads in accordance with ASME B1.20.1 (NPT), and shall be limited to services and sizes specified in Para.7 of SAES-L-110.

2.4 Threaded Piping Systems

• As a general design policy to reduce the incidence of leakage, the use of threaded joints and unions (where permitted by the Piping Class) shall be kept to a minimum consistent with ease of pipe work fabrication, installation and maintenance.

• All threaded connections that require seal welding, shall meet the requirements specified in Para.8 of SAES-L-110.

• Threaded plugs on hydrostatic vents, not provided with a valve, shall be seal welded after testing has been carried out.

Threaded connections, not requiring seal welding, shall be sealed as follows:

400 deg. F (204 deg. C) & below - use PTFE Jointing Tape, or approved jointing compound.
Above 400 deg. F (204 deg. C) - Seal weld wherever possible, otherwise seek clarification from COMPANY to use pipe jointing compound to manufacturer's standards.

2.5 Jointing Of Small Bore Pipes

With the exception of galvanized & non-metallic piping, straight lengths of small bore piping NPS 2 and smaller shall be joined together by butt welding.

2.6 Bends and Elbows in Small Bore Piping

In small bore welded piping NPS 2 and smaller, hot or cold formed bends with a radius of 5D minimum are preferred to elbows unless otherwise stated. The maximum permissible ovality after bending is 5% on outside diameter. The maximum permissible thinning on the back of the bend shall be 12.5 % of nominal wall thickness.

2.7 Pressure

All pressures given in this standard are gauge pressure, unless otherwise stated. Unit of Pressure shall be psig. However, unit of barg may be used together with psig provided that psig values are shown as primary value.

2.8 Pipe

All pipes shall comply with COMPANY technical requirements in accordance with SAES-L-105, all appropriate listed specifications and standard drawings, including Project specific amendments.

• Where API 5L material is specified, PSL 2 (Product Specification Level) shall be used unless otherwise specified.

• For nominal pipe sizes greater than NPS 24, pipe sizes shall, wherever possible, increase in increments of 6 inches up to and including NPS 48. Above NPS 48, shall increase in increment of 4 inches.

• Pipe sizes not included in ASME B36.10 / B36.19 shall not be used.

• Carbon steel pipe NPS 3 and larger specified to API 5L shall be purchased in accordance with 01-SAMSS-035.

• API 5L pipe shall have a joint efficiency factor of 0.95. All other welded carbon steel pipe shall be 100% radiographed and have a joint factor of 1.

Non-standard pipe sizes NPS 1/8”, 1/4”, 3/8”, 1-1/4", 2-1/2", 3-1/2”, 5”, 7” & 9” and 22” shall not be used in any piping class, except where specifically shown on P&IDs.

Note:
Where equipment is supplied with non-standard nozzle sizes, these shall be adjusted to a standard size by means of a reducing fitting immediately adjacent to the equipment. The non-standard adaptor component shall be supplied by the Equipment manufacturer. Wall thicknesses of such fittings shall be as per the next standard size up.

End preparation of metallic pipes shall be as follows, unless otherwise specified:
 NPS 1-1/2 and smaller : Plain end (square cut)
 NPS 2 and larger : Bevel end in accordance with Fig.2 (a) of ASME B16.25 regardless of the wall thickness.

• All buried steel pipe shall be externally protected against corrosion per SAES-H-002.

• Non metallic piping used above ground shall have external UV protection according to SAES-L-610, Nonmetallic Piping.

2.9 Fittings / Flanges

• All pipe fittings shall comply with COMPANY technical requirements in accordance with Para.5 of SAES-L-105, all appropriate listed specifications and standard drawings, including Project specific amendments.

• Forged fittings shall comply with Para.10 of SAES-L-110. Class 3000, Class 6000 and Class 9000 threaded and socket-welding fittings shall conform to ASME B16.11

• Forged welding outlets conforming to ASME B16.11 fitting pressure class 3000 or 6000 may be used in lieu of SASD’s AE-036175 and AE-036643.

• Butt-weld elbows shall be long radius.

Unless otherwise stated, the wall thickness of butt welded fittings shall be equal to the thickness of the connected pipe.
Mitered elbows are not to be used except in non-metallic piping, unless specified in line class.

2.9.1 Swaged Nipples

All swaged nipples shall conform to MSS SP-95 and end connections shall be in accordance with Piping Class.

2.9.2 Nipples

The minimum wall thickness for Nipples to allow for increased mechanical strength shall be:

 Carbon steels : Schedule 80
 Stainless steels : Schedule 40S
 Galvanised steel (threaded) : Same as pipe schedule

In vibrating service where bracing cannot be effectively provided, schedule 160 close nipples shall be installed with reinforcing pad as required by the code or integrally reinforced outlets of approval design.
Note: For vibration consideration in RTR piping, reinforced tee or saddles shall be used.

2.9.3 Unions

Unions may only be used where indicated on Piping Classes, they shall not be used in:-
 Hydrogen service
 Steam service
 Systems Class 400 and above
 Where design temperatures are above 446 deg. F (230 deg. C)
 Toxic and highly corrosive fluids (including sour process)
 Low temperature service
 Unions shall comply with MSS SP-83, Class 3000 threaded or socket-welding forged steel unions as specified in Para.10.2 of SAES-L-110.

2.9.4 Flanges

All pipe flanges shall comply with COMPANY technical requirements in accordance with SAES-L-109, all listed specifications and standard drawings, including any Project specific amendments covering flanges, lap joints, blinds & spacers and spectacle plates.
Flanges up to and including NPS 24 shall be in accordance with ASME B16.5. Flanges NPS 26 and larger shall be in accordance with ASME B16.47, series A (MSS SP-44) unless otherwise stated.

Care shall be exercised where mating to, or replacing, existing installations. In these cases the Flange standard and rating shall be ascertained from Site supplied data and/ or field verification.

The thickness of CS or SS Blind Flanges to NPS 26 & larger shall conform to ASME B16.47, series A.
Slip-on flanges may be used in utility services and as out-of-spec flanges with COMPANY approval provided that the following limitations are met:
 Shall not be used for temperatures above 752 deg. F (400 deg. C).
 Shall not be used when the corrosion allowance is above 3.0 mm.
 Shall not be used in cases where large temperature cycles can occur.
 Shall not be used in Classes 600 and higher.
 Shall not be attached directly to pipe fittings.
 Shall not be used in areas subject to vibration.
 Refer to SAES-L-109 for any other limitations on the use of Slip on flanges.

Flange facing finish shall be per S-000-1360-062 “Project Specification of Flange Facing Finish”, unless otherwise stated.
Ring joint flanges shall be used in all classes rated 900 and above.
Unless specified in individual piping classes, flat faced flanges shall only be used when mating to cast iron or non metallic flanges or to flat face flanges on equipment. Flat face finish shall be in accordance with MSS SP-6.
Galvanised flanges shall be supplied galvanised in accordance with ASTM Specification A53, with threads and gasket contact area free of galvanising.
Weld neck type orifice flanges with raised face and ring joint shall be in accordance with AC-036413 and AB-036414, respectively.
Orifice flanges of NPS 1-1/2 and smaller and of threaded end type shall conform to ASME B16.36.
Orifice flanges for non-metallic piping shall be as per vendor manufacturing standard however flange drilling dimensions shall match respective mating pipe flange dimension.
Jack screws are not required for flange joints which require frequent separation (e.g., spectacle blanks, paddle blanks & paddle spacers, screens, and drop-out spools) because flange separators are used. Metallic Orifice flanges shall be furnished with jack screws.
2.9.5 Spectacle Plates, Blind and Spacers

Spectacle plates, blinds and spacers for Class 150, 600 & Class 1500 raised face and flat face flanges shall conform to the JGC Standard drawings.

For NPS 3/4 to 1-1/2, spectacle plates (Figure 8 blank) shall be in accordance with ASME B16.48 unless otherwise specified.

2.10 Gaskets

All gaskets shall comply with COMPANY technical requirements in accordance with Para.11 of SAES-L-109, all listed specifications and standard drawings, including any Project specific amendments.
”Flexible Graphite” compounds shall contain min. 95% pure Carbon grade, except where specific Service requirement is determined otherwise.
Gasket inside diameters for piping class in sulphuric acid shall match with the bore of the pipes.
Insulating gasket and kit such as Pikotek, or approved equal, in accordance with AA-036865 shall be installed at dissimilar metal connections in accordance with Para.5.7 of SAES-L-105 and Para.11.5 of SAES-L-109, unless otherwise specified.
Spiral wound gasket shall be with inner rings for vacuum and catalyst services.
2.11 Bolts

All bolting shall comply with COMPANY technical requirements in accordance with Para.12 of SAES-L-109, all listed specifications and standard drawings, including any Project specific amendments.
Threads of bolts and nuts shall be unified course thread series (UNC) in nominal diameter 1 inch and smaller and unified 8-thread series (8 UN) in nominal diameter 1-1/8 inch and larger conforming to ASME B1.1, Class 2A for bolts and Class 2B for nuts.
Machine bolts shall be heavy hex type conforming to ASME B18.2.1. Nuts shall be semi-finished heavy hex type conforming to ASME/ ANSI B18.2.2.
The specified length of stud bolts is the effective thread length. Ineffective thread portions shall not be counted for length of bolts. Specified length of machine bolts is measured from bearing of head, including end point.
Bolting used in underground piping shall be ceramic fluoropolymer coated as per 09-SAMSS-107 in accordance with Para.5.6 of SAES-L-105.
Where flange insulation assembly is required, bolt lengths shall be calculated to suit the application in accordance with AA-036865.
All jackscrews and hexagonal head bolt shall have threads extended to underside of the head.

2.12 Fabrication
Fabrication of piping shall incorporate the requirements of SAES-W-011 and within K06-MC-RP-001

PWHT requirements shall be in accordance with SAES-W-011, Project specific amendment, any relevant project specification and applicable codes.

2.13 PWHT

PWHT requirements shall be in accordance with SAES-W-011, Project specific amendment, any relevant project specification and applicable codes.

2.14 Branch Reinforcement

Branch reinforcement shall be in accordance with Para. 12 of SAES-L-110 and standard drawings. Welded branch connections shall be verified in accordance with Para.304.3 of ASME B31.3.

On Piping Class specifications prohibiting screwed connections, screwed branch connections may be used for non-valved hydrostatic test vents only with seal welding of the plug after testing as per SAES-L-110.

2.15 Buried Piping

All buried carbon steel piping shall be externally protected in accordance with SAES-H-002 and any Project specific amendments. Cathodic protection shall be applied in accordance with the project methodology.

2.16 Valves

1) All valves shall comply with COMPANY technical requirements in accordance with SAES-L-108 and all listed specifications and standard drawings, including any Project specific amendments. These shall include, but not limited to the following:

SAES-L-108 : Selection of Valves
04-SAMSS-001 : Gate Valves
04-SAMSS-002 : Globe Valves
04-SAMSS-005 : Check Valves, Swing Type
04-SAMSS-035 : General requirements for Valves
04-SAMSS-048 : Valve Inspection and Testing Requirements
04-SAMSS-051 : Ball Valves, API Spec 6D

2) Types of valves and trim shall be in accordance with the individual piping classes, based upon service conditions.

3) All socket-welding/ threaded-end gate, globe and check valves except bronze or non-metallic valves shall conform to API Standard 602.

4) Face to face and end to end dimensions shall be in accordance with ASME B16.10/ API 6D whichever is applicable and Para.5.3.1.2 of 04-SAMSS-001.

5) Gear operator for gate, globe, ball and butterfly valves shall be provided for size & rating as tabulated below. Bevel gear operators are to be used in preference to spur gear operators. Where frequency of operation or high operating torque dictates, valves of other sizes may be equipped with gear operators, and the Valve Data Sheet shall indicate such requirements.

Class Valve Type and NPS
Gate Globe Ball/Plug Butterfly (*)
150 20 & larger 10 & larger 6 & larger 8 & larger
300 16 & larger 8 & larger 4 & larger 8 & larger
600 8 & larger 6 & larger 3 & larger
1500 6 & larger 4 & larger 3 & larger

(*) The above is for API Standard 609 Category-A and gear operator shall be provided for all sizes of high-performance type butterfly valves which are torque seated.

6) Valve trim numbers for gate, globe and check valves are as tabulated in Para.2.21.

7) The use of clamp-on type chain wheels for valves larger than NPS 2 shall require COMPANY approval.

8) All wrench operated ball valves in insulated lines shall have 6 inch extended spindle (measured from the valve bonnet) to ensure that the wrench clears valve insulation. The spindle shall have an outer stationary tube welded to the valve bonnet and having a weather seal at the wrench end. The stationary tube enables the insulation to be properly sealed around it.
9) Gate and check valve bore dimension shall be supplied in accordance with the specified standard.

10) The maximum design temperature of soft-seated ball, butterfly and plug valves shall be governed by the manufacturer valve seat pressure/ temperature ratings, but shall not exceed 400 deg. F (204 deg. C). Above 400 deg. F, metal seated valves shall be used.

11) All high-performance butterfly valves in process service shall be lug-type per API 609 category B design with tapped bolt holes for NPS 24 and smaller or shall be flanged. Butterfly valves are not to be bolted directly against check valves.

12) All butterfly valves in utility service shall be of wafer type or lug-type with through bolt holes per API Standard 609 category A design for NPS 24 and smaller and shall be of double flanged type for NPS 26 and larger, unless otherwise specified. Butterfly valves are not to be
Bolted directly against check valves.

13) Lug type design butterfly valves shall be drilled and tapped for machine screws or cap screws. Double flanged type butterfly valves shall be drilled only.

14) Bronze valves shall conform to MSS SP-80.

15) Plug valves shall conform to the applicable requirements of API 599.

16) Check valves for NPS 1-1/2 and smaller shall be of piston-lift type with spring except that bronze check valves are of swing type.

17) Check valves shall be of swing type for NPS 2 through 16 inclusive and shall be of dual-plate type for NPS 18 and larger unless otherwise specified.

18) All NPS 3 & above swing check and dual plate check valves shall be installed in horizontal lines.

2.17 Dissimilar Metal Connections
Dissimilar metal welds shall be in accordance with SAES-W-011.

2.18 Auxiliary Piping for Mechanical Equipment

01-SAMSS-017 references minimum requirements for auxiliary piping for mechanical equipment.

2.19 Vents and Drains
Vent and drain size shall be as per P& ID.






2.20 Valve Trim Number

Trim No. Body Seat Surface Disc Seat Surface
01 13 Cr 13 Cr
05 HF HF
08 HF 13 Cr
10 SS316 SS316
12 SS316 HF
9 NiCu NiCu
13 Alloy 20 Alloy 20

HF – Hard Faced (Stellite No.6)

2.21 Painting & Insulation for Piping

External painting shall be as per SAES-H-001, SAES-H-002 & supplementary specification Q42-H-RE-856724.

Piping insulation shall be as per SAES-N-001 & JGC doc. S-000-1390-001 (General Specification for Insulation).

3 LIST OF PROJECT & REFERENCE STANDARDS

The following documents shall form a part of this specification to the extent specified.

3.1 REGULATIONS, CODES & STANDARDS

Project Specifications and Standards

K06-PM-GS-001 Site Data and Utilities Specification
K06-PR-BD-001 Process Basis of Design
K06-PI-BD-001 Piping Basis of Design
K06-PI-TC-001 Piping Wall thickness Calculation
K06-MC-RP-001 Material Selection and Corrosion Management Philosophy

Saudi Aramco Engineering Standards

SAES-H-002 Internal and External coatings for Carbon steel pipelines.
SAES-L-100 Applicable Codes and Standards for Pressure Piping systems
SAES-L-105 Piping Material Specifications
SAES-L-108 Selection of Valves
SAES-L-110 Limitations on Pipe Joints and Components
SAES-L-125 Safety Instruction Sheet for Piping and Pipelines
SAES-L-132 Corrosion Protection Requirements for Pipelines, Piping and Process Equipment
SAES-L-150 Pressure testing of Plant Piping and Pipelines
SAES-L-310 Design of Plant Piping
SAES-L-350 Construction of Plant Piping
SAES-L-610 Non metallic Piping
SAES-L-810 Design of Piping on Offshore structures

Saudi Aramco Material Specifications

01-SAMSS-005 Shop Applied, Internal Cement Mortar Lining of Steel Pipe
01-SAMSS-029 RTR (Fiberglass) Sewer Pipe and Fittings for Gravity Flow
01-SAMSS-034 RTR (Fiberglass) Pressure Pipe and Fittings
01-SAMSS-035 API Line pipe
01-SAMSS-0332 High frequency welded line pipe, Class B
01-SAMSS-0333 High frequency welded line pipe, Class C
02-SAMSS-001 Piping components for Low temperature service
02-SAMSS-005 Butt welding pipe fittings
02-SAMSS-011 Forged steel weld neck flanges for low and intermediate temperature Service
04-SAMSS-001 Gate Valves
04-SAMSS-002 Globe Valves
04-SAMSS-003 Additional requirements for Low Temp. Valves
04-SAMSS-005 Check Valves, Swing type
04-SAMSS-035 General requirements for Valves
04-SAMSS-041 Expanding Plug valves
04-SAMSS-050 Gate Valves, Through Conduit type, API 6D
04-SAMSS-051 Ball Valves, API 6D
09-SAMSS-091 Internal FBE coating specification
09-SAMSS-107 Application of Fluoropolymer coatings to fasteners Saudi Aramco Standard Drawings







4 Abbreviations
The following abbreviations are used in this specification;

ABBREVIATION DESCRIPTION
ANSI AMERICAN NATIONAL STANDARDS INSTITUTE
API AMERICAN PETROLEUM INSTITUTE
ASME AMERICAN SOCIETY OF MECHANICAL ENGINEERS
ASTM AMERICAN SOCIETY FOR TESTING AND MATERIALS
BB BOLTED BONNET
BC BOLTED COVER
BE BEVELED END
BG BOLTED GLAND
BS BRITISH STANDARDS
BW BUTTWELD
CPVC CHLORINATED POLYVINYL CHLORIDE
CR CHROMIUM
CS CARBON STEEL
EFW ELECTRIC FUSION WELD
EPDM ETHYLENE-PROPYLENE
F FEMALE
FBE FUSION BONDED EPOXY
ENP ELECTROLESS NICKEL PLATING
FF FLAT FACE OR FULL FACE
HEX HEXAGONAL
HF HARD FACED (Stellite No. 6)
HP Butterfly HIGH PERFORMANCE BUTTTERFLY
ID INSIDE DIAMETER
ISNRS INSIDE SCREW NON-RISING STEM
ISRS INSIDE SCREW RISING STEM
ISS INSIDE SCREW STEM
L LENGTH
(L) LARGE
LR LONG RADIUS
M MALE
MM MILLIMETER
MSS MANUFACTURERS STANDARDIZATION SOCIETY
NPS NOMINAL PIPE SIZE
NPT NATIONAL TAPER PIPE THREAD
OS&Y OUTSIDE SCREW AND YOKE
PCS PIECES
PE PLAIN END
PTFE POLY-TETRAFLUORO-ETHYLENE
PWHT POSTWELD HEAT TREATMENT
RF RAISED FACE
RJ RING TYPE JOINT
R-PTFE REINFORCED POLY-TETRAFLUORO-ETHYLENE
RT RADIOGRAPHIC TEST
RTRP REINFORCED THERMOSETTING RESIN PIPE
(S) SMALL
SAW SUBMERGED ARC WELD
SB SCREWED BONNET
SCH SCHEDULE
SG SCREWED GLAND
SS STAINLESS STEEL
STD STANDARD or STANDARD WEIGHT
SW SOCKET WELD
T THICKNESS
TFE TETRAFLUOROETHYLENE
TSO TIGHT SHUT OFF
UB UNION BONNET
UNC UNIFIED COURSE THREADS
UNS UNIFIED NUMBERING SYSTEM
WB WELDED BONNET
WN WELD NECK
XS EXTRA STRONG

Saudi Aramco Standard Drawings

AA-036865 Isolating Assemblies for Carbon steel Raised Face flanges.
AB-036414 Orifice Flange Assembly –Ring Joint
AC-036413 Orifice Flange Assembly
AC-036484 Carbon steel WN & Blind flanges, Large sizes-Class 300 RJ.
AC-036630 Installation of Jack screws for flanged joints
AD-036631 Spectacle plates, Blinds and spacers for Class 125 Cast Iron flanges
AD-036633 Spectacle plates, Blinds and spacers for carbon steel Class 150 Raised face flanges
AD-036636 Spectacle plates, Blinds and spacers for carbon steel Class 600 Raised face flanges
AD-036643 Boss Heavy Welding (Socket Welding Connections)
AD-036731 Spectacle plates, Blinds and spacers for carbon steel Class 250 Raised face C/I and Carbon steel class 300 RF flanges
AD-036735 Spectacle plates, Blinds and spacers for carbon steel Class 900 Octagonal ring joint flanges
AD-036736 Spectacle plates, Blinds and spacers for carbon steel Class 1500 Octagonal ring joint flanges
AE-036175 Details of carbon steel welding boss, threaded connections
AD-036643 Details of carbon steel welding boss, socket-weld connections
AE-036768 External welding sleeve for Cement lined pipe
AB-036719 Reinforcement of welded branch connections

Industry Codes and Standards

American Petroleum Institute (API)

API 5L Specification for Line pipe.
API 6A Specification for Wellhead equipment
API 6D Pipeline Valves
API 590 Steel Line blanks
API 599 Steel and Ductile iron plug valves
API 600 Steel Gate Valves- Flanged and Butt welding ends
API 602 Compact Steel Gate Valves- Flanged, Threaded, Welding and Extended- body ends
API 607 Fire Test for Soft-Seated Quarter-Turn Valves
API 941 Steels for Hydrogen service at Elevated temperatures and Pressures in Petroleum Refineries and Petrochemical Plants.

American Society of Mechanical Engineers (ASME)

ASME B31.3 Process Piping.
ASME B16.1 Cast Iron pipe flanges and Flanged fittings
ASME B16.3 Malleable Iron Threaded Fittings
ASME B16.5 Pipe flanges and Flanged fittings
ASME B16.9 Factory Made Wrought Steel Butt Welding Fittings
ASME B16.11 Forged Steel Fittings, Socket-Welding and Threaded
ASME B16.12 Cast Iron Threaded Drainage Fittings
ASME B16.20 Metallic Gaskets for Pipe Flanges
ASME B16.21 Non-metallic Gaskets for Pipe Flanges
ASME B16.28 Wrought Steel Butt welding Short Radius Elbows and Returns.
ASME B16.34 Steel Valves
ASME B16.39 Malleable Iron Threaded Pipe Unions.
ASME B16.42 Ductile Iron Pipe Flanges and Flanged Fittings.
ASME B16.47 Large Diameter Flanges

American Society for Testing and Materials (ASTM)

ASTM A36 Structural Steel
ASTM A53 Pipe, Steel, Black and Hot-Dipped, Zinc Coated, Welded and Seamless
ASTM A105 Forgings, Carbon Steel for Piping Components
ASTM A74 Cast Iron Soil Pipe and Fittings
ASTM A106 Seamless Carbon Steel Pipe for High Temperature Service
ASTM A182 Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves, and Parts for High Temperature Service
ASTM A193 Alloy-Steel and Stainless Steel Bolting Materials for High Temperature Service
ASTM A194 Carbon and Alloy Steel Nuts for Bolts for High-Pressure and High Temperature Service
ASTM A216 Steel Casting, Carbon, Suitable for Fusion Welding for High Temperature Service
ASTM A217 Steel Casting, Martensitic Stainless and Alloy, for Pressure-Containing Parts Suitable for High Temperature Service
ASTM A234 Pipe Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and Elevated Temperatures
ASTM A240 Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels
ASTM A269 Seamless and Welded Austenitic Stainless Steel Tubing for General Service
ASTM A307 Carbon Steel Bolts and Studs, 60,000 psi Tensile
ASTM A312 Seamless and Welded Austenitic Stainless Steel Pipe
ASTM A335 Seamless Ferritic Alloy Steel for High-Temperature Service
ASTM A350 Forgings, Carbon and Low-Alloy Steel Requiring Notch Toughness Testing for Piping Components
ASTM A351 Steel Castings, Austenitic, for High-Temperature Service
ASTM A395 Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures
ASTM A403 Wrought Austenitic Stainless Steel Piping Fittings
ASTM A494 Castings, Nickel and Nickel Alloy
ASTM A563 Carbon and Alloy Steel Nuts
ASTM A789/A789M Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASTM A790/A790M Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
ASTM B61 Steam or Valve Bronze Castings
ASTM B62 Composition Bronze or Ounce Metal Castings
ASTM B88 Seamless Copper Water Tube
ASTM B165 Nickel-Copper Alloy Seamless Pipe and Tube
ASTM B169 Aluminium-Bronze Plate, Sheet, Strip, and Rolled Bar (UNS C61400)
ASTM B366 Factory-Made Wrought Nickel-Alloy Welding Fittings
ASTM B407 Nickel-Iron-Chromium Alloy Seamless Pipe and Tube
ASTM B409 Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip
ASTM B462 Forged or Rolled UNS N08020, UNS N08024, UNS N08026, and UNS N08367 Alloy Pipe Fittings, and Valves and Parts for Corrosive High- Temperature Service
ASTM B463 Forged or Rolled UNS N08020, UNS N08024,UNS N08026 Alloy Plate, Sheet, and Strip
ASTM B464 Welded Chromium-Nickel-Iron-Molybdenum-Copper-Columbium Stabilized Alloy (UNSN08020)Pipe
ASTM B466 Seamless Copper-Nickel Pipe and Tube (UNSC70610)
ASTM B467 Welded Copper-Nickel Pipe (UNS C71500)
ASTM B474 Electric Fusion Welded UNS N08020, UNS N08024, and UNS N08026 Nickel Alloy Pipe
ASTM B530 Method for Measurement of Coating Thicknesses by Magnetic Method, Electrodeposited Nickel Coatings on Magnetic and Non-Magnetic Substrates
ASTM B564 Nickel Alloy Forgings
Manufacturers Standardization Society

MSS SP-25 Standard Marking System for Valve, Fittings, Flanges and Unions
MSS SP-44 Steel Pipe Line Flanges
MSS-SP-67 Butterfly Valves
MSS SP-70 Cast Iron Gate Valves, Flanged and Threaded Ends
MSS SP-71 Gray Iron Swing Check Valves, Flanged and Threaded Ends
MSS SP-80 Bronze Gate, Globe, Angle and Check Valves
MSS SP-83 Steel Pipe Unions, Socket-Welding and Threaded
MSS SP-85 Gray Iron Globe and Angle Valves, Flanged and Threaded Ends
MSS SP-95 Swage (d) Nipples and Bull Plugs
MSS SP-97 Integrally Reinforced Forged Branch Outlet Fittings — Socket Welding, Threaded, and Butt-welding Ends.


5 GENERAL REQUIREMENTS

5.1 Design Life

The project facilities shall be designed for continuous service at the conditions specified in the data sheets for the minimum design life of 20 years


6 TECHNICAL REQUIREMENTS

6.1 Materials

Piping Materials shall be in full accordance with all applicable Industry codes and standards, Government regulations, Saudi Aramco Standards and KJO’s requirements as a minimum.


6.2 Piping Classes

The piping class sheets used on the FEED phase of the project are detailed in Appendix 1 of this document. New piping classes have been developed to address the project specific requirements.
Some of the existing pipe classes defined in SAES-L-105 have been used.


































7 HOLD ITEMS


 Piping Items of 6LE2W & 15LE2W

 Corrossion Allowance under Hold for 15LE2W & 6LE2W

 Valve material for 1FEW,1FE0P,1FE0D,6LE2W & 15LE2W

















































ATTACHMENT - 2: PIPING CLASS SUMMARY


Refer to the next sheets.




























































ATTACHMENT - 2: WALL THICKNESS TABLE


Refer to the next sheets.











































































































ATTACHMENT - 3: SERVICE LIMIT SUMMARY

PIPING
CLASS DESIGN TEMP.
SIZE RANGE SERVICE LIMIT (deg C / bar) REMARKS
12LC0U deg C -29 to 38 95 　 　
NPS 4 – 24 19.6 17.85 　
15LE2W deg C -29 to 38 95 　 　
NPS 2 - 26 255.3 234.76 　
15SV0C deg C -29 to 38 95 　 　
NPS 0.5 - 4 258.6 253.83 　
15SX0W deg C -29 to 38 95 　 　
NPS 0.5 - 24 258.6 253.83 　
1CG1U deg C -29 to 38 95
NPS 0.5 – 24 19.6 17.85
1CS1U deg C -29 to 38 95 　 　
NPS 0.5 – 24 19.6 17.85
1CS2U
deg C -29 to 38 95 　 　
NPS 0.5 – 24 19.6 17.85
1CS2W deg C -29 to 38 95 　 　
NPS 0.5 – 24 19.6 17.85 　
1CS2Y deg C -29 to 38 95 　 　
NPS 0.5 – 24 19.6 17.85 　

1CS9P
deg C -29 to 38 95 　 　
NPS 0.5 – 24 19.6 17.85 　
1FE0D deg C -29 to 38 95 　 　
NPS 2 - 30 10 10 　
1FE0P deg C -29 to 38 95
NPS 2 - 30 10 10
1FE0W deg C -29 to 38 95
NPS 2 - 30 10 10
1SD0C deg C -29 to 38 95
NPS 0.5 - 24 15.9 13.5
1SV0C deg C -29 to 38 95
NPS 0.5 - 4 20 17.88
1SV0D deg C -29 to 38 95
NPS 0.5 - 4 20 17.88
1SV0U
deg C -29 to 38 95
NPS 0.5 - 4 20 17.88
1SX0W deg C -29 to 38 95
NPS 0.5 - 24 20 17.88
6LE2W deg C -29 to 38 95
NPS 2 - 24 102.1 93.9
6SX0W
deg C -29 to 38 95
NPS 0.5 - 24 103.4 101.51





























Appendix 1

Piping Classes

PIPING
MATERIAL SPECIFICATION












J-Gulf JOB CODE	:	G-K024-00-0000
J-Gulf DOC No	:	S-000-1360-076
PCWBS	: 	0000


















TABLE OF CONTENTS

1.1	SCOPE	4
1.2	DEFINITIONS	4
1.3	CONFLICTS AND DEVIATIONS	4
1.4	UNITS	4
1.5	PIPING LINE CLASS DESIGNATOR SYSTEM	4
2	GENERAL NOTES	5
2.1	GENERAL	5
2.2	SERVICE LIMITS AND PIPE WALL THICKNESS	5
2.3	THREADS	5
2.4	THREADED PIPING SYSTEMS	5
2.5	JOINTING OF SMALL BORE PIPES	6
2.6	BENDS AND ELBOWS IN SMALL BORE PIPING	6
2.7	PRESSURE	6
2.8	PIPE	6
2.9	FITTINGS / FLANGES	7
2.9.1	Swaged Nipples	8
2.9.2	Nipples	8
2.9.3	Unions	8
2.9.4	Flanges	8
2.9.5	Spectacle Plates, Blind and Spacers	10
2.10	GASKETS	10
2.11	BOLTS	10
2.12	FABRICATION	11
2.13	PWHT	11
2.14	BRANCH REINFORCEMENT	11
2.15	BURIED PIPING	11
2.16	VALVES	11
2.17	DISSIMILAR METAL CONNECTIONS	13
2.18	AUXILIARY PIPING FOR MECHANICAL EQUIPMENT	13
2.19	VENTS AND DRAINS	13
2.20	VALVE TRIM NUMBER	14
2.21	PAINTING & INSULATION FOR PIPING	14
3	LIST OF PROJECT & REFERENCE STANDARDS	14
3.1	REGULATIONS, CODES & STANDARDS	14
4	Abbreviations	16
5	GENERAL REQUIREMENTS	21
5.1	DESIGN LIFE	21
6	TECHNICAL REQUIREMENTS	21
6.1	MATERIALS	21
6.2	PIPING CLASSES	21
7	HOLD ITEMS	22




ATTACHMENTS


 ATTACHMENT - 1:  PIPING CLASS SUMMARY………………………………………..24

ATTACHMENT - 2:  WALL THICKNESS TABLE…………………………………………26

ATTACHMENT - 3:  SERVICE LIMIT SUMMARY………………………………………..27

Appendix 1…………………………………………………………………………………….28

 
1.        INTRODUCTION 

1.1	Scope 

This specification describes the general and technical requirements for the piping, including valves, for the development of “Construction of WTF-3 and Khafji Ratawi WIF projects” for Al Khafji Joint operations (KJO). The project piping classes utilize the Saudi Aramco Desktop standards, the Saudi Aramco Engineering Standards (SAES) and the Saudi Aramco Material System Specifications (SAMSS). 

The following systems are excluded from the scope of this document: 

•	Instrumentation and tubing downstream of the last piping isolating valve 
•	Sub-sea pipelines and valves. Refer to P & ID’s for boundaries 
•	Wellhead valves and equipment 
•	All flexible hoses 
•	Scraper stations and related appurtenances 
•	Any specialty items marked on P & IDs 

1.2	Definitions 

The following definitions are used for the purpose of this specification: 

Company	Al Khafji Joint Operations (KJO)
Company Representative	Any agency, consultant or contractor acting on behalf of KJO
Inspector	KJO Approved Third Party Inspection Agency
Project Data Sheets	Governing technical documents for the specific item(s) for purchase
Project Drawings	Reference drawings for the specific item(s) for purchase
Purchaser	Not applicable
Vendor 	Vendor of Equipment, including Sub-Vendor(s) appointed by the Vendor to carry out part or all the work 

1.3	Conflicts and Deviations 

Any conflicts or deviations between the specifications and other documents listed herein, or industry standards, codes, and forms shall be resolved in writing with the Company. 

1.4	Units 

The Units of Measurement shall be in accordance with SAEP-103 Metric Units of Weights and Measures. 

1.5	Piping Line Class Designator System 

Line class designation shall be as per SAES-L-105 Piping Material Specifications. 

2	    GENERAL NOTES

2.1	 General

•	This standard has been produced using the American National Standard Code for Pressure Piping – Process Piping, ASME B31.3.

•	Charpy impact testing shall be carried out on all carbon steel pipes and wrought piping components, irrespective of material grade, with a wall thickness greater than 25mm (Min. temp for carbon steel piping class set at 0 deg. C).  Testing shall be in accordance with ASME B31.3 with impact values being 34J min average and 27J min individual for a standard 10mm x 10mm specimen.  Impact testing shall be carried out on base material, weld deposit and HAZ.

•	The use of any piping materials containing asbestos is prohibited.  Asbestos free substitutes shall be specified for all valve stem packing and gaskets.

2.2	 Service Limits and Pipe Wall Thickness

•	The pressure and temperature limitations specified in ATTACHMENT -3: SERVICE LIMIT SUMMARY are the maximum design conditions of the piping components in individual piping classes.

•	Pipe wall thicknesses of all piping components specified in individual piping class are calculated in accordance with ASME B31.3 based on the internal design pressure and design temperature as the service limit specified in ATTACHMENT -3: SERVICE LIMIT SUMMARY and corrosion allowance specified in ATTACHMENT -1: PIPING CLASS SUMMARY for the individual piping class incorporating the requirements specified in Para.10 of SAES-L-310.

•	The wall thickness calculation does not account for any additional loadings imposed such as thermal loads due to restraints, live loads and other loadings than those provided in ASME B31.3.

2.3	 Threads

All threaded connections shall have taper threads in accordance with ASME B1.20.1 (NPT), and shall be limited to services and sizes specified in Para.7 of SAES-L-110.

2.4	Threaded Piping Systems

•	As a general design policy to reduce the incidence of leakage, the use of threaded joints and unions (where permitted by the Piping Class) shall be kept to a minimum consistent with ease of pipe work fabrication, installation and maintenance.

•	All threaded connections that require seal welding, shall meet the requirements specified in Para.8 of SAES-L-110.

•	Threaded plugs on hydrostatic vents, not provided with a valve, shall be seal welded after testing has been carried out. 

Threaded connections, not requiring seal welding, shall be sealed as follows:

400 deg. F (204 deg. C) & below - use PTFE Jointing Tape, or approved jointing compound. 
Above 400 deg. F (204 deg. C) - Seal weld wherever possible, otherwise seek clarification from COMPANY to use pipe jointing compound to manufacturer's standards.

2.5	Jointing Of Small Bore Pipes

With the exception of galvanized & non-metallic piping, straight lengths of small bore piping NPS 2 and smaller shall be joined together by butt welding.

2.6	  Bends and Elbows in Small Bore Piping

In small bore welded piping NPS 2 and smaller, hot or cold formed bends with a radius of 5D minimum are preferred to elbows unless otherwise stated.  The maximum permissible ovality after bending is 5% on outside diameter.  The maximum permissible thinning on the back of the bend shall be 12.5 % of nominal wall thickness.

2.7	  Pressure

All pressures given in this standard are gauge pressure, unless otherwise stated.  Unit of Pressure shall be psig.  However, unit of barg may be used together with psig provided that psig values are shown as primary value.

2.8	  Pipe

All pipes shall comply with COMPANY technical requirements in accordance with SAES-L-105, all appropriate listed specifications and standard drawings, including Project specific amendments.

•	Where API 5L material is specified, PSL 2 (Product Specification Level) shall be used unless otherwise specified.

•	For nominal pipe sizes greater than NPS 24, pipe sizes shall, wherever possible, increase in increments of 6 inches up to and including NPS 48.  Above NPS 48, shall increase in increment of 4 inches.

•	Pipe sizes not included in ASME B36.10 / B36.19 shall not be used.

•	Carbon steel pipe NPS 3 and larger specified to API 5L shall be purchased in accordance with 01-SAMSS-035.

•	API 5L pipe shall have a joint efficiency factor of 0.95.  All other welded carbon steel pipe shall be 100% radiographed and have a joint factor of 1.

Non-standard pipe sizes NPS 1/8”, 1/4”, 3/8”, 1-1/4", 2-1/2", 3-1/2”, 5”, 7” & 9” and 22” shall not be used in any piping class, except where specifically shown on P&IDs.

Note:
Where equipment is supplied with non-standard nozzle sizes, these shall be adjusted to a standard size by means of a reducing fitting immediately adjacent to the equipment.  The non-standard adaptor component shall be supplied by the Equipment manufacturer.  Wall thicknesses of such fittings shall be as per the next standard size up.

End preparation of metallic pipes shall be as follows, unless otherwise specified:
	NPS 1-1/2 and smaller	:	Plain end (square cut)
	NPS 2 and larger 	:	Bevel end in accordance with Fig.2 (a) of ASME B16.25 regardless of the wall thickness. 

•	All buried steel pipe shall be externally protected against corrosion per SAES-H-002.

•	Non metallic piping used above ground shall have external UV protection according to SAES-L-610, Nonmetallic Piping.

2.9	  Fittings / Flanges

•	All pipe fittings shall comply with COMPANY technical requirements in accordance with Para.5 of SAES-L-105, all appropriate listed specifications and standard drawings, including Project specific amendments.

•	Forged fittings shall comply with Para.10 of SAES-L-110.  Class 3000, Class 6000 and Class 9000 threaded and socket-welding fittings shall conform to ASME B16.11

•	Forged welding outlets conforming to ASME B16.11 fitting pressure class 3000 or 6000 may be used in lieu of SASD’s AE-036175 and AE-036643.

•	Butt-weld elbows shall be long radius.

Unless otherwise stated, the wall thickness of butt welded fittings shall be equal to the thickness of the connected pipe.
Mitered elbows are not to be used except in non-metallic piping, unless specified in line class.

2.9.1	Swaged Nipples

All swaged nipples shall conform to MSS SP-95 and end connections shall be in accordance with Piping Class.

2.9.2	Nipples

The minimum wall thickness for Nipples to allow for increased mechanical strength shall be:

	Carbon steels	: Schedule 80
	Stainless steels	: Schedule 40S
	Galvanised steel (threaded) 	: Same as pipe schedule

In vibrating service where bracing cannot be effectively provided, schedule 160 close nipples shall be installed with reinforcing pad as required by the code or integrally reinforced outlets of approval design.
Note: For vibration consideration in RTR piping, reinforced tee or saddles shall be used. 

2.9.3	Unions

Unions may only be used where indicated on Piping Classes, they shall not be used in:-
	Hydrogen service
	Steam service
	Systems Class 400 and above
	Where design temperatures are above 446 deg. F (230 deg. C)
	Toxic and highly corrosive fluids (including sour process)
	Low temperature service
	Unions shall comply with MSS SP-83, Class 3000 threaded or socket-welding forged steel unions as specified in Para.10.2 of SAES-L-110.

2.9.4	Flanges

All pipe flanges shall comply with COMPANY technical requirements in accordance with SAES-L-109, all listed specifications and standard drawings, including any Project specific amendments covering flanges, lap joints, blinds & spacers and spectacle plates.
Flanges up to and including NPS 24 shall be in accordance with ASME B16.5.  Flanges NPS 26 and larger shall be in accordance with ASME B16.47, series A (MSS SP-44) unless otherwise stated.

Care shall be exercised where mating to, or replacing, existing installations.  In these cases the Flange standard and rating shall be ascertained from Site supplied data and/ or field verification. 

The thickness of CS or SS Blind Flanges to NPS 26 & larger shall conform to ASME B16.47, series A.
Slip-on flanges may be used in utility services and as out-of-spec flanges with COMPANY approval provided that the following limitations are met: 
	Shall not be used for temperatures above 752 deg. F (400 deg. C).
	Shall not be used when the corrosion allowance is above 3.0 mm.
	Shall not be used in cases where large temperature cycles can occur.
	Shall not be used in Classes 600 and higher.
	Shall not be attached directly to pipe fittings.
	Shall not be used in areas subject to vibration.
	Refer to SAES-L-109 for any other limitations on the use of Slip on flanges.

Flange facing finish shall be per S-000-1360-062 “Project Specification of Flange Facing Finish”, unless otherwise stated.
Ring joint flanges shall be used in all classes rated 900 and above.
Unless specified in individual piping classes, flat faced flanges shall only be used when mating to cast iron or non metallic flanges or to flat face flanges on equipment.  Flat face finish shall be in accordance with MSS SP-6.
Galvanised flanges shall be supplied galvanised in accordance with ASTM Specification A53, with threads and gasket contact area free of galvanising.
Weld neck type orifice flanges with raised face and ring joint shall be in accordance with AC-036413 and AB-036414, respectively.
Orifice flanges of NPS 1-1/2 and smaller and of threaded end type shall conform to ASME B16.36.
Orifice flanges for non-metallic piping shall be as per vendor manufacturing standard however flange drilling dimensions shall match respective mating pipe flange dimension.
Jack screws are not required for flange joints which require frequent separation (e.g., spectacle blanks, paddle blanks & paddle spacers, screens, and drop-out spools) because flange separators are used. Metallic Orifice flanges shall be furnished with jack screws.
2.9.5	Spectacle Plates, Blind and Spacers

Spectacle plates, blinds and spacers for Class 150, 600 & Class 1500 raised face and flat face flanges shall conform to the JGC Standard drawings.

For NPS 3/4 to 1-1/2, spectacle plates (Figure 8 blank) shall be in accordance with ASME B16.48 unless otherwise specified.  

2.10	Gaskets

All gaskets shall comply with COMPANY technical requirements in accordance with Para.11 of SAES-L-109, all listed specifications and standard drawings, including any Project specific amendments. 
”Flexible Graphite” compounds shall contain min. 95% pure Carbon grade, except where specific Service requirement is determined otherwise.
Gasket inside diameters for piping class in sulphuric acid shall match with the bore of the pipes.
Insulating gasket and kit such as Pikotek, or approved equal, in accordance with AA-036865 shall be installed at dissimilar metal connections in accordance with Para.5.7 of SAES-L-105 and Para.11.5 of SAES-L-109, unless otherwise specified.
Spiral wound gasket shall be with inner rings for vacuum and catalyst services.
2.11	Bolts

All bolting shall comply with COMPANY technical requirements in accordance with Para.12 of SAES-L-109, all listed specifications and standard drawings, including any Project specific amendments. 
Threads of bolts and nuts shall be unified course thread series (UNC) in nominal diameter 1 inch and smaller and unified 8-thread series (8 UN) in nominal diameter 1-1/8 inch and larger conforming to ASME B1.1, Class 2A for bolts and Class 2B for nuts.
Machine bolts shall be heavy hex type conforming to ASME B18.2.1. Nuts shall be semi-finished heavy hex type conforming to ASME/ ANSI B18.2.2.
The specified length of stud bolts is the effective thread length.  Ineffective thread portions shall not be counted for length of bolts.  Specified length of machine bolts is measured from bearing of head, including end point.
Bolting used in underground piping shall be ceramic fluoropolymer coated as per 09-SAMSS-107 in accordance with Para.5.6 of SAES-L-105.
Where flange insulation assembly is required, bolt lengths shall be calculated to suit the application in accordance with AA-036865. 
All jackscrews and hexagonal head bolt shall have threads extended to underside of the head.

2.12	Fabrication
Fabrication of piping shall incorporate the requirements of SAES-W-011 and within K06-MC-RP-001

PWHT requirements shall be in accordance with SAES-W-011, Project specific amendment, any relevant project specification and applicable codes.

2.13	PWHT

PWHT requirements shall be in accordance with SAES-W-011, Project specific amendment, any relevant project specification and applicable codes.

2.14	Branch Reinforcement

Branch reinforcement shall be in accordance with Para. 12 of SAES-L-110 and standard drawings.  Welded branch connections shall be verified in accordance with Para.304.3 of ASME B31.3.

On Piping Class specifications prohibiting screwed connections, screwed branch connections may be used for non-valved hydrostatic test vents only with seal welding of the plug after testing as per SAES-L-110.

2.15	Buried Piping

All buried carbon steel piping shall be externally protected in accordance with SAES-H-002 and any Project specific amendments.  Cathodic protection shall be applied in accordance with the project methodology.

2.16	Valves

1)	All valves shall comply with COMPANY technical requirements in accordance with SAES-L-108 and all listed specifications and standard drawings, including any Project specific amendments. These shall include, but not limited to the following:

SAES-L-108	             :	Selection of Valves
04-SAMSS-001	:	Gate Valves
04-SAMSS-002	:	Globe Valves
04-SAMSS-005	:	Check Valves, Swing Type
04-SAMSS-035	:	General requirements for Valves
04-SAMSS-048	:	Valve Inspection and Testing Requirements
04-SAMSS-051	:	Ball Valves, API Spec 6D

2)	Types of valves and trim shall be in accordance with the individual piping classes, based upon service conditions.

3)	All socket-welding/ threaded-end gate, globe and check valves except bronze or non-metallic valves shall conform to API Standard 602.

4)	Face to face and end to end dimensions shall be in accordance with ASME B16.10/ API 6D whichever is applicable and Para.5.3.1.2 of 04-SAMSS-001.

5)	Gear operator for gate, globe, ball and butterfly valves shall be provided for size & rating as tabulated below.  Bevel gear operators are to be used in preference to spur gear operators.  Where frequency of operation or high operating torque dictates, valves of other sizes may be equipped with gear operators, and the Valve Data Sheet shall indicate such requirements.

Class	Valve Type and NPS
	Gate	Globe	Ball/Plug	Butterfly (*)
150	20 & larger	10 & larger	6 & larger	8 & larger
300	16 & larger	8 & larger	4 & larger	8 & larger
600	8 & larger	6 & larger	3 & larger	
1500	6 & larger	4 & larger	3 & larger	

(*)	The above is for API Standard 609 Category-A and gear operator shall be provided for all sizes of high-performance type butterfly valves which are torque seated.

6)	Valve trim numbers for gate, globe and check valves are as tabulated in Para.2.21.

7)	The use of clamp-on type chain wheels for valves larger than NPS 2 shall require COMPANY approval.

8)	All wrench operated ball valves in insulated lines shall have 6 inch extended spindle (measured from the valve bonnet) to ensure that the wrench clears valve insulation.  The spindle shall have an outer stationary tube welded to the valve bonnet and having a weather seal at the wrench end.  The stationary tube enables the insulation to be properly sealed around it.
9)	Gate and check valve bore dimension shall be supplied in accordance with the specified standard.

10)	The maximum design temperature of soft-seated ball, butterfly and plug valves shall be governed by the manufacturer valve seat pressure/ temperature ratings, but shall not exceed 400 deg. F (204 deg. C).  Above 400 deg. F, metal seated valves shall be used.

11)	All high-performance butterfly valves in process service shall be lug-type per API 609 category B design with tapped bolt holes for NPS 24 and smaller or shall be flanged. Butterfly valves are not to be bolted directly against check valves.

12)	All butterfly valves in utility service shall be of wafer type or lug-type with through bolt holes per API Standard 609 category A design for NPS 24 and smaller and shall be of double flanged type for NPS 26 and larger, unless otherwise specified. Butterfly valves are not to be
Bolted directly against check valves.

13)	 Lug type design butterfly valves shall be drilled and tapped for machine screws or cap screws.  Double flanged type butterfly valves shall be drilled only.

14)	Bronze valves shall conform to MSS SP-80.

15)	Plug valves shall conform to the applicable requirements of API 599. 

16)	Check valves for NPS 1-1/2 and smaller shall be of piston-lift type with spring except that bronze check valves are of swing type.

17)	Check valves shall be of swing type for NPS 2 through 16 inclusive and shall be of dual-plate type for NPS 18 and larger unless otherwise specified.

18)	All NPS 3 & above swing check and dual plate check valves shall be installed in horizontal lines.

2.17	Dissimilar Metal Connections
Dissimilar metal welds shall be in accordance with SAES-W-011.

2.18	Auxiliary Piping for Mechanical Equipment

01-SAMSS-017 references minimum requirements for auxiliary piping for mechanical equipment.  

2.19	Vents and Drains
Vent and drain size shall be as per P& ID.






2.20	Valve Trim Number

Trim No.	Body Seat Surface	Disc Seat Surface
01	13 Cr	13 Cr
05	HF	HF
08	HF	13 Cr
10	SS316	SS316
12	SS316	HF
9	NiCu	NiCu
13	Alloy 20	Alloy 20

HF – Hard Faced (Stellite No.6)

2.21	Painting & Insulation for Piping

External painting shall be as per SAES-H-001, SAES-H-002 & supplementary specification Q42-H-RE-856724.

Piping insulation shall be as per SAES-N-001 & JGC doc. S-000-1390-001 (General Specification for Insulation). 

3	 LIST OF PROJECT & REFERENCE STANDARDS

The following documents shall form a part of this specification to the extent specified.

3.1	REGULATIONS, CODES & STANDARDS 

Project Specifications and Standards 

K06-PM-GS-001 	Site Data and Utilities Specification 
K06-PR-BD-001 	Process Basis of Design 
K06-PI-BD-001	Piping Basis of Design 
K06-PI-TC-001 	Piping Wall thickness Calculation 
K06-MC-RP-001 	Material Selection and Corrosion Management Philosophy 

Saudi Aramco Engineering Standards 

SAES-H-002 		Internal and External coatings for Carbon steel pipelines. 
SAES-L-100 		Applicable Codes and Standards for Pressure Piping systems 
SAES-L-105 		Piping Material Specifications 
SAES-L-108 		Selection of Valves 
SAES-L-110 		Limitations on Pipe Joints and Components 
SAES-L-125 		Safety Instruction Sheet for Piping and Pipelines
SAES-L-132 	Corrosion Protection Requirements for Pipelines, Piping and Process   Equipment
SAES-L-150 		Pressure testing of Plant Piping and Pipelines 
SAES-L-310 		Design of Plant Piping 
SAES-L-350 		Construction of Plant Piping 
SAES-L-610 		Non metallic Piping 
SAES-L-810 		Design of Piping on Offshore structures 

Saudi Aramco Material Specifications 

01-SAMSS-005 	Shop Applied, Internal Cement Mortar Lining of Steel Pipe 
01-SAMSS-029 	RTR (Fiberglass) Sewer Pipe and Fittings for Gravity Flow 
01-SAMSS-034 	RTR (Fiberglass) Pressure Pipe and Fittings 
01-SAMSS-035 	API Line pipe 
01-SAMSS-0332 	High frequency welded line pipe, Class B 
01-SAMSS-0333 	High frequency welded line pipe, Class C 
02-SAMSS-001 	Piping components for Low temperature service 
02-SAMSS-005 	Butt welding pipe fittings 
02-SAMSS-011 	Forged steel weld neck flanges for low and intermediate temperature Service 
04-SAMSS-001 	Gate Valves 
04-SAMSS-002 	Globe Valves 
04-SAMSS-003 	Additional requirements for Low Temp. Valves 
04-SAMSS-005 	Check Valves, Swing type 
04-SAMSS-035 	General requirements for Valves 
04-SAMSS-041 	Expanding Plug valves 
04-SAMSS-050 	Gate Valves, Through Conduit type, API 6D 
04-SAMSS-051 	Ball Valves, API 6D 
09-SAMSS-091 	Internal FBE coating specification 
09-SAMSS-107 	Application of Fluoropolymer coatings to fasteners Saudi Aramco Standard Drawings







4	Abbreviations
The following abbreviations are used in this specification; 

ABBREVIATION	DESCRIPTION
ANSI	AMERICAN NATIONAL STANDARDS INSTITUTE
API	AMERICAN PETROLEUM INSTITUTE
ASME	AMERICAN SOCIETY OF MECHANICAL ENGINEERS
ASTM	AMERICAN SOCIETY FOR TESTING AND MATERIALS
BB	BOLTED BONNET
BC	BOLTED COVER
BE	BEVELED END
BG	BOLTED GLAND
BS	BRITISH STANDARDS
BW	BUTTWELD
CPVC	CHLORINATED POLYVINYL CHLORIDE
CR	CHROMIUM
CS	CARBON STEEL
EFW	ELECTRIC FUSION WELD
EPDM	ETHYLENE-PROPYLENE
F	FEMALE
FBE	FUSION BONDED EPOXY
ENP	ELECTROLESS NICKEL PLATING
FF	FLAT FACE OR FULL FACE
HEX	HEXAGONAL
HF	HARD FACED (Stellite No. 6)
HP Butterfly	HIGH PERFORMANCE BUTTTERFLY
ID	INSIDE DIAMETER
ISNRS	INSIDE SCREW NON-RISING STEM
ISRS	INSIDE SCREW RISING STEM
ISS	INSIDE SCREW STEM
L	LENGTH
(L)	LARGE
LR	LONG RADIUS
M	MALE
MM	MILLIMETER
MSS	MANUFACTURERS STANDARDIZATION SOCIETY
NPS	NOMINAL PIPE SIZE
NPT	NATIONAL TAPER PIPE THREAD
OS&Y	OUTSIDE SCREW AND YOKE
PCS	PIECES
PE	PLAIN END
PTFE	POLY-TETRAFLUORO-ETHYLENE
PWHT	POSTWELD HEAT TREATMENT
RF	RAISED FACE
RJ	RING TYPE JOINT
R-PTFE	REINFORCED POLY-TETRAFLUORO-ETHYLENE
RT	RADIOGRAPHIC TEST
RTRP	REINFORCED THERMOSETTING RESIN PIPE
(S)	SMALL
SAW	SUBMERGED ARC WELD
SB	SCREWED BONNET
SCH	SCHEDULE
SG	SCREWED GLAND
SS	STAINLESS STEEL
STD	STANDARD or STANDARD WEIGHT
SW	SOCKET WELD
T	THICKNESS
TFE	TETRAFLUOROETHYLENE
TSO	TIGHT SHUT OFF
UB	UNION BONNET
UNC	UNIFIED COURSE THREADS
UNS	UNIFIED NUMBERING SYSTEM
WB	WELDED BONNET
WN	WELD NECK
XS	EXTRA STRONG

Saudi Aramco Standard Drawings 

AA-036865 	Isolating Assemblies for Carbon steel Raised Face flanges. 
AB-036414 	Orifice Flange Assembly –Ring Joint 
AC-036413 	Orifice Flange Assembly 
AC-036484	Carbon steel WN & Blind flanges, Large sizes-Class 300 RJ.
AC-036630 	Installation of Jack screws for flanged joints
AD-036631 	Spectacle plates, Blinds and spacers for Class 125 Cast Iron flanges
AD-036633 	Spectacle plates, Blinds and spacers for carbon steel Class 150 Raised face flanges
AD-036636 	Spectacle plates, Blinds and spacers for carbon steel Class 600 Raised face flanges
AD-036643 	Boss Heavy Welding (Socket Welding Connections)
AD-036731 	Spectacle plates, Blinds and spacers for carbon steel Class 250 Raised face C/I and Carbon steel class 300 RF flanges
AD-036735 	Spectacle plates, Blinds and spacers for carbon steel Class 900 Octagonal ring joint flanges
AD-036736 	Spectacle plates, Blinds and spacers for carbon steel Class 1500 Octagonal ring joint flanges
AE-036175 	Details of carbon steel welding boss, threaded connections
AD-036643	Details of carbon steel welding boss, socket-weld connections 
AE-036768 	External welding sleeve for Cement lined pipe
AB-036719 	Reinforcement of welded branch connections

Industry Codes and Standards 

American Petroleum Institute (API) 

API 5L 			Specification for Line pipe. 
API 6A 			Specification for Wellhead equipment 
API 6D 			Pipeline Valves 
API 590 			Steel Line blanks 
API 599 			Steel and Ductile iron plug valves 
API 600 			Steel Gate Valves- Flanged and Butt welding ends 
API 602 	Compact Steel Gate Valves- Flanged, Threaded, Welding and Extended- body ends 
API 607 			Fire Test for Soft-Seated Quarter-Turn Valves 
API 941 	Steels for Hydrogen service at Elevated temperatures and Pressures in Petroleum Refineries and Petrochemical Plants. 

American Society of Mechanical Engineers (ASME) 

ASME B31.3 		Process Piping. 
ASME B16.1 		Cast Iron pipe flanges and Flanged fittings 
ASME B16.3 		Malleable Iron Threaded Fittings 
ASME B16.5 		Pipe flanges and Flanged fittings 
ASME B16.9 		Factory Made Wrought Steel Butt Welding Fittings 
ASME B16.11 		Forged Steel Fittings, Socket-Welding and Threaded 
ASME B16.12 		Cast Iron Threaded Drainage Fittings 
ASME B16.20 		Metallic Gaskets for Pipe Flanges 
ASME B16.21 		Non-metallic Gaskets for Pipe Flanges 
ASME B16.28 		Wrought Steel Butt welding Short Radius Elbows and Returns. 
ASME B16.34 		Steel Valves 
ASME B16.39 		Malleable Iron Threaded Pipe Unions. 
ASME B16.42 		Ductile Iron Pipe Flanges and Flanged Fittings. 
ASME B16.47 		Large Diameter Flanges 

American Society for Testing and Materials (ASTM)
 
ASTM A36 		Structural Steel  
ASTM A53 	Pipe, Steel, Black and Hot-Dipped, Zinc Coated, Welded and Seamless 
ASTM A105 		Forgings, Carbon Steel for Piping Components
ASTM A74 		Cast Iron Soil Pipe and Fittings
ASTM A106 		Seamless Carbon Steel Pipe for High Temperature Service
ASTM A182 	Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves, and Parts for High Temperature Service
ASTM A193 	Alloy-Steel and Stainless Steel Bolting Materials for High Temperature Service
ASTM A194 	Carbon and Alloy Steel Nuts for Bolts for High-Pressure and High Temperature Service 
ASTM A216 	Steel Casting, Carbon, Suitable for Fusion Welding for High Temperature Service
ASTM A217 	Steel Casting, Martensitic Stainless and Alloy, for Pressure-Containing Parts Suitable for High Temperature Service
ASTM A234 	Pipe Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and Elevated Temperatures
ASTM A240 	Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels
ASTM A269 	Seamless and Welded Austenitic Stainless Steel Tubing for General Service
ASTM A307 		Carbon Steel Bolts and Studs, 60,000 psi Tensile
ASTM A312 		Seamless and Welded Austenitic Stainless Steel Pipe
ASTM A335  		Seamless Ferritic Alloy Steel for High-Temperature Service
ASTM A350 	Forgings, Carbon and Low-Alloy Steel Requiring Notch Toughness Testing for Piping Components
ASTM A351 		Steel Castings, Austenitic, for High-Temperature Service
ASTM A395 	Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures
ASTM A403 		Wrought Austenitic Stainless Steel Piping Fittings
ASTM A494 		Castings, Nickel and Nickel Alloy
ASTM A563 		Carbon and Alloy Steel Nuts
ASTM A789/A789M 	Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASTM A790/A790M 	Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
ASTM B61 		Steam or Valve Bronze Castings
ASTM B62 		Composition Bronze or Ounce Metal Castings
ASTM B88 		Seamless Copper Water Tube
ASTM B165 		Nickel-Copper Alloy Seamless Pipe and Tube
ASTM B169 	Aluminium-Bronze Plate, Sheet, Strip, and Rolled Bar (UNS C61400)
ASTM B366 		Factory-Made Wrought Nickel-Alloy Welding Fittings
ASTM B407 		Nickel-Iron-Chromium Alloy Seamless Pipe and Tube
ASTM B409 		Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip
ASTM B462 	Forged or Rolled UNS N08020, UNS N08024, UNS N08026, and UNS N08367 Alloy Pipe Fittings, and Valves and Parts for Corrosive High- Temperature Service
ASTM B463 	Forged or Rolled UNS N08020, UNS N08024,UNS N08026 Alloy Plate, Sheet, and Strip
ASTM B464 	Welded Chromium-Nickel-Iron-Molybdenum-Copper-Columbium Stabilized Alloy (UNSN08020)Pipe
ASTM B466 		Seamless Copper-Nickel Pipe and Tube (UNSC70610)
ASTM B467 		Welded Copper-Nickel Pipe (UNS C71500)
ASTM B474 	Electric Fusion Welded UNS N08020, UNS N08024, and UNS N08026 Nickel Alloy Pipe
ASTM B530	Method for Measurement of Coating Thicknesses by Magnetic Method, Electrodeposited Nickel Coatings on Magnetic and Non-Magnetic Substrates
ASTM B564 		Nickel Alloy Forgings
Manufacturers Standardization Society 

MSS SP-25 		Standard Marking System for Valve, Fittings, Flanges and Unions
MSS SP-44 		Steel Pipe Line Flanges
MSS-SP-67 		Butterfly Valves
MSS SP-70 		Cast Iron Gate Valves, Flanged and Threaded Ends  
MSS SP-71 		Gray Iron Swing Check Valves, Flanged and Threaded Ends
MSS SP-80 		Bronze Gate, Globe, Angle and Check Valves
MSS SP-83 		Steel Pipe Unions, Socket-Welding and Threaded
MSS SP-85 		Gray Iron Globe and Angle Valves, Flanged and Threaded Ends  
MSS SP-95 		Swage (d) Nipples and Bull Plugs
MSS SP-97 	Integrally Reinforced Forged Branch Outlet Fittings — Socket Welding, Threaded, and Butt-welding Ends.


5	 GENERAL REQUIREMENTS
 
5.1	 Design Life 

The project facilities shall be designed for continuous service at the conditions specified in the data sheets for the minimum design life of 20 years


6	 TECHNICAL REQUIREMENTS
 
6.1	 Materials 

Piping Materials shall be in full accordance with all applicable Industry codes and standards, Government regulations, Saudi Aramco Standards and KJO’s requirements as a minimum.


6.2	Piping Classes 

The piping class sheets used on the FEED phase of the project are detailed in Appendix 1 of this document. New piping classes have been developed to address the project specific requirements. 
Some of the existing pipe classes defined in SAES-L-105 have been used.


































7	HOLD ITEMS


	Piping Items of 6LE2W & 15LE2W 

	Corrossion Allowance under Hold for 15LE2W & 6LE2W

	Valve material for 1FEW,1FE0P,1FE0D,6LE2W & 15LE2W

















































ATTACHMENT - 2:  PIPING CLASS SUMMARY


Refer to the next sheets.

 


























































ATTACHMENT - 2:  WALL THICKNESS TABLE


Refer to the next sheets.











































































































ATTACHMENT - 3:  SERVICE LIMIT SUMMARY

PIPING
CLASS	DESIGN TEMP.
SIZE RANGE	SERVICE LIMIT (deg C /  bar)	REMARKS
12LC0U	deg C	-29 to 38	95								　	　
	NPS 4 – 24	19.6	17.85								　	
15LE2W	deg C	-29 to 38	95								　	　
	NPS 2 - 26	255.3	234.76								　	
15SV0C	deg C	-29 to 38	95								　	　
	NPS 0.5 - 4	258.6	253.83								　	
15SX0W	deg C	-29 to 38	95								　	　
	NPS 0.5 - 24	258.6	253.83								　	
1CG1U	deg C	-29 to 38	95									
	NPS 0.5 – 24	19.6	17.85									
1CS1U	deg C	-29 to 38	95								　	　
	NPS 0.5 – 24	19.6	17.85									
   1CS2U
	deg C	-29 to 38	95								　	　
	NPS 0.5 – 24	19.6	17.85									
1CS2W	deg C	-29 to 38	95								　	　
	NPS 0.5 – 24	19.6	17.85								　	
1CS2Y	deg C	-29 to 38	95								　	　
	NPS 0.5 – 24	19.6	17.85								　	

1CS9P
	deg C	-29 to 38	95								　	　
	NPS 0.5 – 24	19.6	17.85								　	
   1FE0D	deg C	-29 to 38	95								　	　
	NPS 2 - 30	10	10								　	
  1FE0P	deg C	-29 to 38	95									
	NPS 2 - 30	10	10									
1FE0W	deg C	-29 to 38	95									
	NPS 2 - 30	10	10									
1SD0C	deg C	-29 to 38	95									
	NPS 0.5 - 24	15.9	13.5									
1SV0C	deg C	-29 to 38	95									
	NPS 0.5 - 4	20	17.88									
1SV0D	deg C	-29 to 38	95									
	NPS 0.5 - 4	20	17.88									
1SV0U
	deg C	-29 to 38	95									
	NPS 0.5 - 4	20	17.88									
1SX0W	deg C	-29 to 38	95									
	NPS 0.5 - 24	20	17.88									
6LE2W	deg C	-29 to 38	95									
	NPS 2 - 24	102.1	93.9									
6SX0W
	deg C	-29 to 38	95									
	NPS 0.5 - 24	103.4	101.51									





























Appendix 1

Piping Classes