02 Samss 001
02 Samss 001
02 Samss 001
1 Scope............................................................. 2
2 Conflicts and Deviations................................. 2
3 References..................................................... 2
4 General........................................................... 3
5 Materials......................................................... 3
6 Inspection and Testing................................... 5
7 Documentation............................................... 5
8 Product Marking............................................. 5
9 Export Packing, Marking and Shipping.......... 5
10 Material Selection and
Testing Subcommittee............................ 6
1 Scope
1.1 This specification prescribes the requirements that apply to carbon steel and low
alloy steel piping components for use in services with design minimum
temperatures within the range of -18°C to -45°C.
1.2 Components included are butt welding pipe fittings such as elbows, tees,
welding outlets, reducers, caps, and lap joint stub ends < NPS 24, as well as
blind flanges, spectacle plates, spacers and slip blinds. Pipe is not included as a
piping component and is not addressed in this specification.
1.4 Socket-welding and threaded fittings less than 2-inch NPS are excluded from
this specification.
2.1 Any conflicts between this specification and other applicable Saudi Aramco
Materials System Specifications (SAMSSs), Engineering Standards (SAESs),
Standard Drawings (SASDs), or industry standards, codes, and forms shall be
resolved in writing by the Company or Buyer Representative through the
Manager, Consulting Services Department of Saudi Aramco, Dhahran.
2.2 Direct all requests to deviate from this specification in writing to the Company or
Buyer Representative, who shall follow internal company procedure SAEP-302
and forward such requests to the Manager, Consulting Services Department of
Saudi Aramco, Dhahran.
3 References
The design of the piping components shall be in accordance with the following
standards, Saudi Aramco Specifications and Standard Drawings.
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Document Responsibility: Materials and Corrosion Control 02-SAMSS-001
Issue Date: 29 June 2005
Next Planned Update: 1 July 2010 Piping Components for Low Temperature Service
4 General
4.1 Purchase Order Information shall indicate the following: type of pipe
component, grade, nominal size, wall thickness of matching pipe for butt
welding fittings; bore and flange rating in addition to nominal size for flanges.
Requirement for SAES-A-301 shall be indicated if applicable.
4.2 All components shall be seamless, unless otherwise approved by the Company
or Buyer representative.
5 Materials
5.1 Acceptable materials are ASTM A420 Grade WPL 3, ASTM A420 Grade WPL
6, and ASTM A350 Grade LF2 when they are tested and inspected in
accordance with this specification. ASTM A516 plate may be used for blind
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Document Responsibility: Materials and Corrosion Control 02-SAMSS-001
Issue Date: 29 June 2005
Next Planned Update: 1 July 2010 Piping Components for Low Temperature Service
flanges, spectacle plates, spacers and slip blinds when tested and inspected in
accordance with this specification.
In the notation of required Charpy Values such as 25/20, the first number
is the average energy of three specimens while the second number is the
minimum for any one specimen.
The provisions in ASTM A350 Para. 7.2.4 for subsize specimens and test
temperature reduction are the same as in ASME B31.3 Para. 323.3.
5.2.3 Grade LF2 materials shall be tested as specified in ASTM A350 except
that the required Charpy V-notch impact values shall be 34/27 J (25/20
ft-lbs) for standard 10 mm by 10 mm specimens.
5.2.4 ASTM A516 plate, used for blind flanges, spectacle plates, blinds, and
spacers, shall be tested as specified in ASTM A516 S2, S5, S12 and the
required longitudinal Charpy V-notch impact values shall be 34/27 J
(25/20 ft-lbs) for standard 10 mm by 10 mm specimens. For subsize
specimens the provisions of ASME B31.3 Para. 323.3 shall apply.
5.3 Butt welding pipe fittings shall also comply with 02-SAMSS-005.
5.4 Piping components shall comply with the requirements of SAES-A-301 when
specified in the Purchase Order.
Commentary Note:
SAES-A-301 is not normally specified for butt-welding pipe fittings per 02-
SAMSS-005 because 02-SAMSS-005 requirements are consistent with
SAES-A-301 and are considered by Saudi Aramco to be adequate for sour
service.
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Document Responsibility: Materials and Corrosion Control 02-SAMSS-001
Issue Date: 29 June 2005
Next Planned Update: 1 July 2010 Piping Components for Low Temperature Service
6.1 General
6.3 Tests
7 Documentation
Three (3) copies of all mill certificates and all other test results required by this
specification shall be supplied in the English language.
8 Product Marking
Piping components shall be marked in accordance with ASTM A420 or ASTM A350 as
appropriate. For easy identification all components shall have an approximately 25 mm
wide orange stripe painted over the longitudinal axis. Components that cannot be
painted as such, shall be painted completely orange. Flanges shall have the rim painted
orange. All other required markings shall remain legible or be restored after the orange
paint is applied. The paint shall be lead free.
Export packing, marking and shipping shall be in accordance with the Purchase
Requisition/Purchase Order.
Page 5 of 6
Document Responsibility: Materials and Corrosion Control 02-SAMSS-001
Issue Date: 29 June 2005
Next Planned Update: 1 July 2010 Piping Components for Low Temperature Service
Revision Summary
29 June 2005 Revised the "Next Planned Update". Reaffirmed the contents of the document, and reissued
with editorial changes.
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