EES103 Submerged-Arc Welded Steel Pipe

ENGINEERING EQUIPMENT SPECIFICATION

COPYRIGHT 2010 ENBRIDGE PIPELINES INC. ALL RIGHTS RESERVED

Submerged-Arc-Welded Steel Pipe Specification

Supplementary to API 5L EES103 (2010)

Revision: 1.0 Approval Date: April 26, 2010

Enbridge Pipelines Inc.

Enbridge Energy Partners L.P.

SUBMERGED-ARC-WELDED STEEL PIPE SPECIFICATION ENGINEERING EQUIPMENT SPECIFICATION EES103 - 2010

REVISION 1.0, APRIL 26, 2010 PAGE i COPYRIGHT 2010 ENBRIDGE PIPELINES INC. ALL RIGHTS RESERVED

Table of Contents 1 Scope .......................................................................................................................... 12 Conformity ................................................................................................................. 13 Normative References .............................................................................................. 14 Terms and Definitions ............................................................................................... 25 Symbols and Abbreviated Terms ............................................................................ 36 Pipe Grade, Steel Grade and Delivery Condition ................................................... 37 Information to be Supplied by the Company .......................................................... 38 Manufacturing ............................................................................................................ 49 Acceptance Criteria ................................................................................................... 810 Inspection ................................................................................................................ 1511 Marking ..................................................................................................................... 1912 Coatings ................................................................................................................... 2013 Retention of Records .............................................................................................. 2014 Pipe Loading and Shipping .................................................................................... 2015 Reporting.................................................................................................................. 21Annex A Specification for Welded Jointers ..................................................................... 23Annex B Manufacturing Procedure Qualification for Pipe ............................................. 25Annex C Treatment of Surface Imperfections and Defects ............................................ 27Annex D Repair Welding Procedure ................................................................................. 29Annex E Nondestructive Inspection for Other than Sour Service or Offshore Service31Annex F Materials Testing Frequency Table ................................................................ 37Annex G Submerged-Arc-Welded Pipe Specification Datasheet ................................... 39


REVISION 1.0, APRIL 26, 2010 PAGE 1 COPYRIGHT 2010 ENBRIDGE PIPELINES INC. ALL RIGHTS RESERVED

1 Scope: Replace

This Specification covers requirements for the manufacture, qualification, inspection and testing of submerged arc-welded steel pipe for transportation of hydrocarbon fluids. This Specification supplements the requirements of API 5L, Forty Fourth Edition Specification for Line Pipe and is to be used in conjunction with that standard. For continuity, clause numbers in this Specification follow the same sequence and primary headings as API 5L. Clauses in this Specification may either add to or replace requirements of API 5L, and are identified as such. Additional clauses covering subjects not addressed by API 5L have been inserted in sequence. Clauses specified in API 5L that are not applicable to this Specification have been left out.

The requirements of the Appendices to this Specification shall also be met when applicable.

Specific agreements with individual Manufacturers shall be attached as addenda to this Specification and are only applicable to that Manufacturer. Pipe shall be supplied to meet this Specification, the requirements specified on the Specification Datasheet and the purchase order applicable to each order.

Any and all deviations from this Specification shall be brought to the attention of the Company in writing for resolution prior to final acceptance.

1.1 Product Specification Level (PSL): Additional Clause

Pipe shall meet the level of technical requirements designated as Product Specification Level PSL 2.

2 Conformity

2.1- 2.3: Applicable

3 Normative References

Additional References: API RP 5L1 Recommended Practice for Railroad Transportation of Line Pipe

API 1104 Welding of Pipelines and Related Facilities

AAR Section 2 Rules Governing the Loading of Steel Products Including Pipe on Open Top Cars

ASTM A 435 Straight-Beam Ultrasonic Examination of Steel Plates

ASTM E23 Notched Bar Impact Testing of Metallic Materials

ASTM E45 Practice for Determining the Inclusion Content of Steel

ASTM E112 Test Methods for Determining Grain Size



NACE SSPC-SP-10 Near-White Blast Cleaning

3.1 Minimum Federal Safety Standards: Additional Clause

Pipe supplied to this Specification is intended for installation in a pipeline constructed as specified by Part 192, Title 49, Code of Federal Regulations, Transportation of Natural and Other Gas by Pipeline and Part 195, Transportation of Hazardous Liquids by Pipeline. Pipe shall meet the applicable requirements of those Regulations, API Specification 5L, Forty Fourth Edition and this Specification.

4 Terms and Definitions: Applicable

4.29 Manufacturer: Additional

A pipe manufacturer who proposes to, or has been contracted to provide to the Company, pipe manufactured to this Specification.

4.38 Purchaser (Company): Additional

That Company, which is stated on the Specification Datasheet as Purchasing Company, shall include any so designated authorized representatives.

Additional Definitions:

4.55 Crack

A fracture type discontinuity characterized by a sharp tip and high ratio of length and width to opening displacement.

4.56 Single-jointer

Two pieces of pipe welded together to make a length shorter than 50 ft. (15.2 m).

4.57 Double-jointer

Two pieces of pipe welded together to make a length 50 ft. (15.2 m) or longer.

4.58 Triple-jointer

Three pieces of pipe welded together to make a length 50 ft. (15.2 m) or longer.

4.59 Specification Datasheet(s)

Information issued to the prospective Manufacturer in a format as outlined in Annex G of this Specification, including information issued to the Manufacturer on purchase order documentation or on any request-for-quotation documentation associated with a specific project.



5 Symbols and Abbreviated Terms

5.1- 5.2: Applicable

6 Pipe Grade, Steel Grade and Delivery Condition

6.1 Pipe Grade and Steel Grade

6.1.2 Applicable

6.2 Delivery Condition

6.2.2 Replace

For PSL 2 pipe, the delivery condition shall be thermo mechanical rolled or thermo mechanical formed. Refer to Table 1 of API 5L.

7 Information to be Supplied by the Company

7.1 General Information: Applicable

7.2 Additional Information: Replace

a) Items that are subject to mandatory agreement:

4) carbon equivalent limits for PSL 2 pipe

b) Items that apply as prescribed:

4) chemical composition limits for PSL 2 pipe

c) Items that apply, if agreed:

9) CVN impact test of the pipe body of PSL 2 welded pipe with D > 508 mm (20.000 in)

10) CVN impact test of the seam weld of PSL 2 SAW pipe

16) weldability data or tests for PSL 2 pipe

23) hardness test during production of SAW pipe

35) color identification for pipe

39) non-destructive inspection records

40) manufacturing procedure qualification for PSL 2 pipe, Annex B of this Specification shall apply

42) ultrasonic inspection of welded pipe for laminar imperfections at pipe ends

46) ultrasonic inspection for laminar imperfections in the pipe body of SAW pipe

47) ultrasonic inspection for laminar imperfections along the strip/plate edges or the weld seam of SAW pipe.

55) Specification Datasheet.



8 Manufacturing

8.1 Process of Manufacture: Replace

Pipe furnished to this Specification shall be submerged-arc welded, PSL 2, pipe grades L245 (B) to L555 (X80). Refer to Table 2 in API 5L.

Additional Clauses:

8.1.1 Manufacturing Procedure

Prior to the Manufacturer becoming qualified to provide pipe to this Specification, a typical manufacturing procedure shall be submitted as specified by Annex B of this Specification.

Manufacturers shall submit, with their quotations, the details of proposed manufacturing procedure for the item being quoted.

Conditional to the issuance of a pipe purchase order, the Manufacturer shall promptly submit, for approval to the Company, any proposed deviations from the procedures submitted. Failure to submit such deviations in a timely manner shall constitute grounds for cancellation or rejection of part, or all, of the order.

8.1.2 Manufacturing Route

PSL 2 pipe manufacturing route for SAW pipe shall be thermo mechanical rolled strip or plate, cold forming, delivery condition M.

8.2 Processes Requiring Validation: Replace

Final operations performed during pipe manufacturing that affect attribute compliance as required shall have their processes validated.

Those processes requiring validation are the following:

- for submerged-arc-welded, as rolled pipe: weld and full body non-destructive inspection.

8.3 Starting Material

8.3.1 Applicable

8.3.2 Additional

The Manufacturer shall have a documented and operating process for controlling slab internal quality requirements. Slab quality specification requirements are subject to review by Company.

8.3.3 - 8.3.5: Applicable

Additional Clauses:

8.3.6

Pipe material furnished to the Specification shall be in the as-rolled condition.



8.3.7

The Manufacturer shall maintain sufficient surface cleanliness for inspection purposes, as directed by the Company. Where necessary, plate, skelp or pipe may be cleaned by either shotblasting or sandblasting.

8.4 Tack Welds


8.4.3 Additional Clause

All evidence of tack welds shall be removed by the submerged arc weld or by repair welding.

8.6 Weld Seams in SAW Pipe: Applicable

Additional Clauses:

8.6.1 Welding Processes

8.6.1.1.

Welding procedures for the longitudinal, helical and circumferential jointer welds, whichever are applicable, shall be qualified as specified by ASME Boiler and Pressure Vessel Code, Section IX for each welding process, and for each flux trade name/designation and electrode designation combination employed.

8.6.1.2.

Material grade shall be included as an essential variable for qualification of welding procedures as specified by ASME Boiler and Pressure Vessel Code, Section IX.

8.6.1.3.

For pipe ordered with proven notch toughness properties, procedure qualification testing shall include Charpy V-notch impact tests of the weld and heat-affected zone. The absorbed energy requirements shall be as outlined on Specification Datasheet.

8.6.1.4.

Where specified, weld hardness traverse qualification tests are required for the pipe weld metal, parent metal and heat affected zone of longitudinal, helical and circumferential jointer welds.

Such tests shall include three microhardness traverses across the weld, heat-affected zones, and parent material. One traverse shall be within 3 mm (1/8 in) of the outside surface, one traverse shall be at the mid-wall point, and one traverse shall be within 3 mm (1/8 in) of the inside surface. All readings in each zone shall be performed on the hardest-appearing structure. All hardness tests shall meet requirements outlined in Clause 9.10.6 of this Specification. The hardness in the weld, heat-affected zone and base metal shall not exceed 250 HV500 when tested as specified by ASTM E384. Frequency for hardness testing shall be as follows:



a) for longitudinal and helical welds, one test per welding day per O.D. welder and not less than once for each heat of steel supplied; and

b) for circumferential mill welds, one test per lot of 100 welds.

The results of all hardness tests shall be reported.

8.6.1.5.

Utilization of pre-qualified welding procedures may be permitted, if qualification documentation meets requirements of this Specification, and is submitted to the Company and approved prior to the start of the production. Welding procedures qualified as part of production shall be documented and submitted to the Company one month prior to the start of the production.

Pipe shall be capable of being welded in the field using conventional welding procedures qualified as specified by ASME Boiler and Pressure Vessel Code, Section IX and API 1104.

8.6.2 Repair Welding

Defects in the longitudinal, helical, or circumferential seams of submerged-arc welded pipe shall be subjected to weld repair as specified by Annex D of this Specification.

8.9 Cold Sizing and Cold Expansion



Suitable previsions shall be incorporated to protect welds from contact with the expander when mechanical expansion is used.

8.10 Strip/Plate End Welds: Replace

Strip/plate end welds shall not be present in finished longitudinal and helical seam welds.

8.11 Jointers

8.11.1-8.11.3: Applicable

8.12 Heat Treatment: Applicable

8.13 Traceability

8.13.2 Applicable

Additional Clauses:

8.13.3 Traceability Materials Records

The material and process history of each pipe as delivered to Company will be traceable from the steel mill, through rolling and plate or coil production, the pipe mill, any jointing processes and the coating mill. Provisions for traceability will be described in the Manufacturing Procedure



Specification (MPS). The final report provided to the Company by the Manufacturer will include confirmation that key process steps as defined by the MPS were preformed on the product and include detailed data and information as required by this Specification. Any breaks in the traceability chain caused by unusual circumstances such as equipment breakdown or rework which is not part of the normal manufacturing process as described in the MPS will be documented by the Manufacturer, along with a description of measures taken to preserve traceability, and appropriate documentation to support the preservation of material traceability.

8.13.4 Traceability Welding Records

For all welds, including jointer and repair welds, the Manufacturer shall maintain detailed written records respecting the use of welding consumables (electrode batches, wire heats, flux batches) and periodic measurement of welding parameters. Records shall be sufficient to permit tracing of consumables and welding process parameters to the individual pipes produced and shall be available to the Company for review upon request.

8.14 Non-destructive Examination

The Manufacturer shall submit, coincident with submission of quotation, the details of procedures to be utilized for the ultrasonic inspection of skelp and pipe for the detection of laminar discontinuities in the steel. Acceptance criteria relating to defect size shall be included with the procedure and shall be approved by the Company prior to commencement of production.

8.15 Internal Coating

Pipe ordered to this Specification may be internally coated. Where internal coating is specified, the coating contractor and the Manufacturer shall cooperate to produce a finished product that complies with this Specification and the Companys specification for the Internal Coating of Line Pipe.

8.16 External Coating

Pipe ordered to this Specification may be externally coated. Where external coating is specified, the coating contractor and the Manufacturer shall cooperate to produce a finished product that complies with this Specification and the Companys specification for External Coating for Line Pipe. Where the Manufacturers pipe mill is not responsible for the external coating and suitability for fusion bond epoxy (FBE) and other coatings is specified on the purchase order, the Manufacturer shall be responsible for ensuring the surface quality is adequate for such coating.



9 Acceptance Criteria

9.1 General

9.1.1-9.1.2: Applicable

9.2 Chemical Composition

9.2.2 Replace

The composition of steel for the pipe furnished to this Specification is subject to agreement between the Company and the Manufacturer. As determined by both, the heat and product analysis, the chemical composition shall conform to the requirements of the following:

Factor Symbol Maximum %

Carbon Equivalent CEPCM 0.25

Element Symbol Maximum % Elementby Weight Carbon C 0.12 Manganese Mn 2.00 Phosphorus P 0.015 Sulphur S 0.006 Silicon Si 0.35 Copper Cu 0.30 Nickel Ni 0.30 Chromium Cr 0.20 Molybdenum Mo 0.30 Niobium Nb 0.060 Titanium Ti 0.020 Vanadium V 0.060 Boron B 0.001 Nitrogen N 90 ppm (Niobium + Vanadium ) +Ti (Nb + V) + Ti 0.12

Table 5 (modified) Note:

1. No deliberate additions of boron are permitted.

2. Compositions outside the above limit but within the limits of API Spec 5L may be acceptable at the sole discretion of the Company.

9.2.4 Additional

The carbon equivalent shall be determined as specified by equation CEPCM. The carbon equivalent shall not exceed 0.25% for both the heat and product analysis.



30 20

20

60

20

15

10 5

Additional Clauses:

9.2.6

The Manufacturer shall furnish a certified report showing the heat analysis for each heat of steel, which shall include all of the elements listed in Clause 9.2.2 of this Specification as well as any other added intentionally.

If any product value does not comply with the values in Clause 9.2.2, all pipe and remaining plate or skelp made from that heat shall be rejected or the remaining pipe lengths processed from the remaining plate or skelp from that heat shall be individually checked for conformance to Table 5 (modified) of 9.2.2.

9.2.7

The Manufacturer shall furnish a certified report showing the heat and product analysis for each heat of steel.

Each required analysis shall include all agreed elements, all elements in the carbon equivalent formula and all other elements added for any reason including deoxidation, inclusion shape control and/or transformation control.

9.3 Tensile Properties

9.3.2 and Table 7: Applicable

Additional Clauses:

9.3.3 General

9.3.3.1.

Test specimens shall not be heat tested but shall be taken from pipe in the same condition as the finished bare metal or coated pipe and shall be representative of the pipe in the plain end condition.

The Manufacturer shall report and receive approval from Company prior to production for the method to be used.

9.3.3.2.

For mechanical tests required under this Specification, lot size testing frequency shall be as specified by Annex F of this Specification.

9.3.3.3.

Samples for all mechanical tests shall be taken from the first length of pipe processed for each lot.



9.3.4 Tensile Properties

9.3.4.1. Body Tensile Range

The range of actual yield strengths based on laboratory qualification testing shall not exceed 104 MPa (15,000 psi) for each pipe order of a specific diameter, wall thickness and grade.

9.3.4.2. Yield Ratio

The ratio of yield strength to ultimate tensile strength shall not exceed 0.85 except for grade X60 for wall thickness greater than 0.375 in. and for grades with minimum specified yield strength greater than X60 in all wall thicknesses. For grades higher than grade X70, the ratio shall not exceed 0.92.

9.3.5 Transverse Weld Tension Tests

For submerged-arc-welded pipe, transverse weld tension tests shall include determination of tensile strength and elongation for longitudinal, helical and circumferential mill jointer welds and shall meet the ultimate tensile strength requirements of Table 7 in API 5L for PSL 2 pipe.

9.4 Hydrostatic Test

9.4.1 Applicable

9.4.2 Additional

Acceptance of jointers not hydrostatically tested shall be subject to Company approval.

9.7 Guided Bend Test



For circumferential mill jointer welds, face and root guided bend tests shall be conducted at a frequency of one test per lot of 100 welds.

9.8 CVN Impact Test for PSL 2 Pipe

9.8.1 General

9.8.1.1 - 9.8.1.3: Applicable

9.8.2 Pipe Body Tests

9.8.2.1. Replace

The minimum average (of a set of three test piece) absorbed energy for each pipe body test shall be as given on the Specification Datasheet.



9.8.3 Pipe Weld and HAZ Tests: Replace

When specified, Charpy V-notch impact tests on the weld metal and heat-affected zone shall be carried out on samples from longitudinal, helical and circumferential welds at a test frequency the same as that specified for weld tensile tests. Test temperature and absorbed energy requirements shall be specified on the Specification Datasheet.

9.9 DWT Test for PSL 2 Welded Pipe


9.10 Surface Conditions, Imperfections and Defects

9.10.1 General

9.10.1.1. - 9.10.1.2.: Applicable

9.10.1.3. Replace

The acceptance criteria for imperfections found by non-destructive inspection shall be as specified by Annex E of this Specification.

9.10.2 Undercuts: Applicable

9.10.3 Arc Burns

9.10.3.1. - 9.10.3.2.: Applicable

9.10.4 Laminations: Applicable

9.10.5 Geometric Deviations

9.10.5.1. - 9.10.5.2.: Applicable

9.10.5.3. Additional Clause:

Dents on welds shall not be permitted and shall be cut out as a cylinder.

9.10.6 Hard Spots: Applicable

9.10.7 Other Surface Imperfections: Replace

Other surface imperfections found by visual inspection shall be investigated, classified and treated as follows:

a) Any imperfections on either of the external wall or internal wall surfaces of the pipe, and having a depth that results in a remaining wall thickness at any point of less than 95 percent of the specified nominal wall thickness, shall be considered to be a defect.

b) Surface scores (sharp notches, gouges, scores, slivers, etc.) and all stress raising imperfections shall be removed by grinding even though they may be less than the maximum depth permissible for imperfections.



c) Pipe ordered to this Specification may be externally coated utilizing fusion bond epoxy or similar methods. Slivers, scabs, bristles or other surface imperfections that could result in an unacceptable applied coating shall be considered to be surface defects, and shall be removed by grinding or by other means acceptable to the Company.

d) The minimum remaining wall thickness at any point after grinding shall not be less than 95 percent of the specified nominal wall thickness.

9.10.8 Disposition of Defects: Additional Clause

Imperfections that have a depth less than 5 percent of the specified wall thickness shall be given one of the following two dispositions:

a) All stress rising imperfections such as sharp notches, gouges, scores, slivers, etc., shall be ground to vanishing. The ground areas shall not exceed 75 mm (3 in) diameter circle and the remaining wall thickness shall not be less than 95 percent of the specified wall thickness, or the affected area shall be cut out as a cylinder.

b) Isolated non stress rising imperfections such as round bottomed pits are acceptable without grinding.

9.11 Dimensions, Mass and Tolerance

9.11.1 Dimensions

9.11.1.1. - 9.11.1.2.: Applicable

9.11.1.3. Replace

The pipe shall be delivered in lengths as specified by the Specification Datasheet.

9.11.2 Mass per Unit Length: Applicable

9.11.3 Tolerance for Diameter, Wall Thickness, Length and Straightness

9.11.3.1. Replace

The outside diameter tolerance of the pipe body shall be +0.50 percent, -0.15 percent for both non-expanded and cold-expanded steel pipe.

The out-of-roundness tolerance shall be that no two internal diameter measurements shall differ by more than 0.75 percent of the specified outside diameter.

9.11.3.2. Replace

The tolerance for wall thickness shall be -5 percent, +10 percent of the specified nominal wall thickness.



9.11.3.3. Applicable


9.12 Finish of Pipe Ends

9.12.1 General

9.12.1.2. - 9.12.1.4.: Applicable

9.12.5 Plain Ends:


9.12.5.2. Replace

Plain end pipe shall be furnished with a bevel angle of 30 (+5 and -0) and a root of 1/16 in., (+1/32 in. and -0) for 95 percent of the circumference. The root face tolerance on the remaining 5 percent of the circumference, in the vicinity of the weld, shall be +1/32 in.

Bevels that do not meet the requirements shall be fully re-machined. Local grinding or filing on the bevels to meet these requirements is not permitted. Inside burrs shall be removed without forming an internal taper.

9.13 Tolerance for the Weld Seam SAW

9.13.1 Radial Offset of Strip/Plate Edges: Replace

The radial offset (refer Figure 4b) shall not exceed the applicable value in Table 14 in API 5L.

9.13.2 Height of the Weld Bead SAW

9.13.2.2. SAW Pipe

a) - b) Applicable

c) Replace

Both ends of submerged-arc-welded pipe shall have the inside weld reinforcement removed for a minimum distance of 75 mm (3 in) from the end of the pipe, such that the inside weld bead does not extend above the inside surface of the pipe by more than 0.5 mm (0.020 in).

d) Replace

Both ends of submerged-arc-welded pipe shall have the outside weld reinforcement removed for a distance of 125 mm (5 in) from the end of the pipe, such that the outside weld bead does not extend above the outside surface of the pipe by more than 0.25 mm (0.010 in).

9.13.2.3. Height of Inside and Outside Weld Beads SAW: Additional Clause

The maximum height of the internal and external weld bead shall be 3.5 mm (0.138 in) for all wall thicknesses. The weld shall exhibit a smooth transition in contour from the pipe to the weld crown. Weld caps shall exhibit a width to height ratio of at least 5:1. The wetting angle shall be maintained at more than 120 (refer to Figure 9 below).



Note: a) The height of the weld bead shall not be below the prolongation of the surface of the

pipe (outside or inside);

b) The Manufacturer shall have the option of grinding or machining the weld bead to the specified height.

Figure 9

9.13.3 Misalignment of Weld Beads of SAW Pipe: Applicable

9.14 Tolerance for Mass

9.14.1 - 9.14.3: Applicable

9.15 Weldability of PSL 2 Pipe: Applicable


The requirements of Clause 8.6.1 of this Specification are applicable.



10 Inspection

10.1 Types of Inspection and Inspection Documents

10.1.1 General

10.1.1.1. - 10.1.1.2.: Applicable

10.1.3 Inspection Documents for PSL 2 Pipe

10.1.3.1. - 10.1.3.2.: Applicable

10.2 Specific Inspection

10.2.1 Inspection Frequency

10.2.1.2 Replace

For PSL 2 pipe, the inspection frequency shall be as given in Table 18 of API 5L and Annex F of this Specification. The more stringent requirement is to apply.

10.2.2 Samples and Test Pieces for Product Analysis: Replace

Samples for product analysis shall be taken only from the pipe.

10.2.3 Samples and Test Pieces for Mechanical Tests

10.2.3.1. - 10.2.3.4 & 10.2.3.6: Applicable

10.2.4 Test Methods

10.2.4.1. - 10.2.4.6.: Applicable

10.2.4.8. Hardness Test: Additional

The requirements shall apply to all sizes of SAW pipe. Any localized work-hardening areas resulting from cold deformation shall be considered defects regardless of depth and shall be given one or more of the dispositions stated in Clauses 9.10.6, 10.2.7.4 and Annex C of this Specification.

10.2.5 Macrographic and Metallographic Tests

10.2.5.1. - 10.2.5.2.: Applicable

10.2.5.4 Additional Clause

a) The hardness in the weld, heat affected zone and base metal shall not exceed 250 HV500, as determined using test methods in accordance with ASTM E384.



b) Examinations shall be performed at a minimum of once every 4 hours and whenever changes of grade, diameter or wall thickness are made and whenever significant excursions from agreed operating conditions are encountered.

c) Microhardness testing shall be performed at applicable frequencies as follows:

i. For longitudinal and helical welds: one test per welding day per O.D. welder, and at least once for each heat of material supplied for an order;

ii. For circumferential mill welds: one test per lot of 100 welds.

10.2.6 Hydrostatic Test: Replace

10.2.6.1.

Each pipe shall withstand, without leakage, a mill hydrostatic test to at least the pressure necessary to stress the pipe wall to 95 percent of the specified minimum yield strength (SMYS), based upon the specified outside diameter and nominal wall thickness. This hydrostatic test pressure will be calculated based on hoop stress only, without taking into consideration end loading. After testing, the pipe outside diameter shall be measured at the pipe ends and in three additional location equidistance along the pipe. The pipe shall meet the outside diameter requirements of API 5L. Test pressure shall be held constant for not less than 10 seconds.

10.2.6.2.

Subject to submission of calculations and prior agreement with the Company, contribution to hoop stress caused by end fixtures may be taken into account in test pressure when the stress due to the hydrostatic test pressure exceeds 90 percent SMYS of the pipe.

10.2.6.3.

The first pipe presented from each heat shall withstand, without leakage, a mill hydrostatic test pressure corresponding to 100 percent SMYS. After testing, the pipe shall meet the outside diameter requirements of API 5L.

10.2.6.4.

If the first pipe (test) fails to meet the dimensional requirements, then two additional test pipes from the same lot shall be tested at 100 percent SMYS. The additional two test pipes are required to meet the hydrostatic test requirements at 100 percent SMYS, including the dimensional requirements; or the lot shall be rejected or individual pipe subjected to 100 percent SMYS for acceptance.

10.2.6.5.

The Manufacturer shall immediately determine the cause of a hydrostatic test leak or burst and will provide a written report to the Companys representative stating corrective actions to be implemented, if applicable.

10.2.6.6.

Individual pressure chart recordings shall be traceable to each pipe number and heat number. Hydrostatic test pressure gauges shall be calibrated with a deadweight tester prior to



commencement of production, at least daily thereafter, and after each expander failure and hydrostatic test failure in the presence of the Company representative. In addition, the tester shall be equipped with positive and automatic or interlocking device to prevent pipe from being classified as tested until the test requirements (pressure and time) have been met. The associated records or charts shall be available for examination.

10.2.6.7.

The Manufacturer shall provide the formal test reports, complete with pressure charts, to the Company representative.

10.2.7 Visual Inspection

10.2.7.1. - 10.2.7.4.: Applicable

Additional Clauses:

10.2.7.5.

The Manufacturer shall inspect pipe by a combination of visual and non-destructive methods to detect defects and to determine compliance with the dimensional and work quality requirements of this Specification. Manufacturer inspection and test plans (or equivalent), including referenced procedures and practices, shall have been provided to the Company, reviewed and accepted by the Company for production to start.

10.2.7.6.

Company quality assurance personnel may be assigned to monitor all aspects of pipe production, testing and shipping and act as Companys representative in all matters pertaining to inspection and acceptance of pipe. Company quality assurance personnel may also be assigned to monitor steel making, casting and/or rolling operations.

10.2.7.7.

All pipe shall be visually inspected. A visual inspection shall include, but not limited to, examination of:

a) the entire external surface including the weld zone, by the inspector walking the full length of the pipe;

b) the internal surface, end to end, by crawling the pipe. For pipe 508 mm (20 in) O.D. and smaller, the pipe internal inspection may be carried out visually at each end using suitable inspection lamps; and

c) the pipe ends.

10.2.7.8.

The inside and outside surfaces of pipe presented for inspection shall be clean and free of unacceptable metallic or non-metallic contaminants including oil, grease, dirt, rust scale, grinding residue and welding flux. If the Company representative determines that pipe has an unacceptable level of cleanliness, it shall be returned to the Manufacturer for cleaning by methods acceptable to the Company. Heat and pipe number identification shall be maintained.



10.2.7.9.

Slivers, scabs, bristles or other surface imperfections that could result in an unacceptable applied coating shall be considered as defects and removed by grinding or by other means acceptable to the Company.

10.2.7.10.

Excessive reject rates or chronic causes of rejection as determined by the Company shall be cause for refusal to accept pipe for final Company inspection until the cause is rectified. Where more than 50 percent of the pipe from a heat is rejected for mechanical test failures or where more than 50 percent of the pipe from a heat or coil is rejected for welding and/or workmanship defects, the Company reserves the right to reject all pipe from the affected heat or coil. The Manufacturer is responsible for obtaining the written authorization of the Company prior to acceptance of any pipe from rejected heat or coil.

10.2.7.11.

Company pipe inspection representatives or third parties designated by the Company shall have the authority to reject any pipe that does not comply with this Specification.

10.2.7.12.

Manufacturer shall provide Company with a current manufacturing and testing schedule (or equivalent) at least one week in advance of the start of any such activities, to permit mobilization of Company representative.

10.2.8 Dimensional Testing

10.2.8.1. - 10.2.8.6.: Applicable

10.2.9 Weighing: Applicable

10.2.10 Non-destructive Inspection: Replace

Non-destructive inspection shall be in accordance with Annex E of this Specification.

10.2.11 Sorting and Reprocessing: Applicable

10.2.12 Retesting

10.2.12.1. - 10.2.12.2.: Applicable

10.2.13 Rejection: Additional Clause

If, in the judgment of the Company, the testing, examination or testing reject rate becomes excessive, the Company shall have the right to refuse to accept pipe for the Companys final inspection until the cause is rectified. Where less than 50 percent of the pipe length formed from any heat or coil complies with all other requirements of the Specification, the Company reserves the right to reject all pipe from the affected heat. The Manufacturer shall advise the Company of such occurrences and shall obtain the Companys written decision.



Pipe shall not be accepted for inspection by the Company unless it is free both inside and outside, from all oil, grease, excessive rust, flux, or caustic substances. Pipe that is not free of rust, flux, etc., shall be shotblasted, sandblasted or otherwise cleaned in a manner acceptable to the Company to enable an adequate inspection. Heat and pipe number identification shall be maintained.

The Companys authorized inspection representatives have the authority to reject any pipe that does not comply with the Specification.

10.2.14 Equipment Calibration: Additional Clause

All measuring devices, for all inspection and testing, shall be checked with standards traceable to the United States Bureau of Standards, or equivalent. Mechanical testing machines shall be calibrated as specified by ASTM E4. Impact testing equipment shall be calibrated as specified by ASTM E23.

11 Marking

11.1 General

11.1.1 Applicable

11.1.3 Replace

Additional marking requirements shall be outlined on the Specification Datasheet.


The pipe Manufacturer shall assign a unique traceability number to each length of pipe to facilitate tracking through the production and finishing and shall ensure that each section of pipe and jointer pipe are identifiable during each stage of the manufacturing process.

11.2 Pipe Markings

11.2.1 Applicable

11.2.2 Additional

c)

3) the pipe number, length, and heat number (or code traceable to the heat number) shall be legibly stenciled on the inside of both ends of each pipe.

4) each jointer pipe shall also be identified with this Specification number and a unique pipe number that is fully traceable through the Manufacturers quality system to the coils, plates, slabs, ingots, strands, ladles or heats used to make each pipe of the finished jointer pipe, such as a triple jointer.



11.2.4 - 11.2.7: Applicable

12 Coatings

12.1 Coatings and Linings

12.1.1 - 12.1.4: Applicable

13 Retention of Records: Replace

The Manufacturer shall, within two weeks of manufacturing completion of each order, supply a certificate of compliance in a format acceptable to the Company. Supply of material test certificates shall be a condition of acceptance and payment for pipe.

a) l) Applicable

Additional: m) certification correlating qualification pipe number to plate, coil and heat as applicable.

n) certification that the pipe has been manufactured as specified by the Manufacturing Procedure Specification (MPS).

14 Pipe Loading and Shipping: Replace

14.1

With the pipe bid, Manufacturer shall submit for the Company acceptance, procedures with necessary drawings and supporting calculations that detail methods of handling, stacking, protecting and securing pipe for mill storage and shipment. Procedures shall indicate the location of bunks, bearing strips, spacers and tie-down straps. Procedure revisions shall require acceptance by Company before implementation.

14.2

As a minimum, rail transportation shall be as specified by API RP 5LI and marine transportation shall be specified by API RP 5LW.

14.3

Pipe shall be handled, stored, loaded and transported in such a manner as to avoid damage, corrosion and induction of additional residual magnetism. Nylon slings, padded forks or special end hooks with soft non-metallic inserts shall be used for handling. The occurrence of critical stresses and the possibility of excessive cold work or fatigue cracking of the pipe in transit shall be avoided.

14.4

Weld seams of submerged-arc-welded pipe, including jointer welds, shall not contact separator blocks or any part of a truck, rail car, ship or other transportation device.



14.5

No direct contact shall be permitted between adjacent pipe, pipe and metallic tie-down devices or pipe and bulkheads. Minimum separation between pipe and bulkheads shall be at least 305 mm (1 ft). Suitable non-metallic materials such as rope encirclements shall be used to prevent metal-to-metal contact.

14.6

Rail cars, truck trailers, ship holds and any other transportation devices shall be adequately cleaned before loading for shipment.

15 Reporting: Additional Clause

15.1 General

The Manufacturer shall perform the following functions once an order has been placed.

15.2 Pipe Production Schedule

Prior to the commencement of an order, the Manufacturer shall list the start and finish dates for each diameter/wall thickness combination for the following stages of production:

a) steelmaking;

b) plate/skelp production;

c) pipe production;

d) internal coating;

e) external coating;

f) shipping from coating location; and

g) arrival at destination.

15.3 Daily Progress Report

Upon commencement of pipe making, the Manufacturer shall communicate to the Company scheduled and actual accumulated totals information for each diameter/wall thickness combination:

a) finished pipe;

b) internally coated pipe;

c) externally coated pipe; and

d) shipped pipe.

15.4 Post Production Review

During completion of the order, the Manufacturer shall provide the Company with the following information for every diameter/wall thickness combination produced.

a) Total pipe length produced and the number of pipe length produced daily.



b) Listing of all heats cast for the order, complete with chemical analysis and mechanical properties, as required by this Specification.

c) Listing of all pipe (Pipe No. and Heat No.) supplied for the order, complete with chemical analysis and mechanical properties as required by this Specification.

d) Certificates to be provided every 3 weeks following commencement of pipe manufacture.

15.5 Non-Conformance Procedures

Non-conformance to this Specification may or may not be accepted, purely at the discretion of the Company.

15.6 Non-Conformance with Respect to Chemical Analysis or Mechanical Properties

Any proposal for non-conformance to the requirements for chemical analysis or mechanical properties must be made when the Manufacturer is responding to a purchase inquiry. Such proposals shall not be entertained subsequent to a bid award being made.

15.6.1 Reporting Non-Conformance

A non-conformance shall be detailed on a sequentially numbered non-conformance form.

15.7 Electronic Reporting

15.7.1 Shipping Reports

The Manufacturer shall report pipe shipments on the shipping day by email to the Company as a spreadsheet or other format acceptable to the Company.



Annex A Specification for Welded Jointers



Specification for Welded Jointers

G.1 General: Additional Clause

Where given in the purchase order, mill-jointers may be furnished within the limits of requirements on length. No length used in making a mill-jointer shall be less than 3 m (10 ft) and the total length of any mill-jointer shall not be less than 9 m (30 ft) after the joining operation. This requirement does not supersede minimum and average length requirements set in the Specification Datasheet. Mill-jointers shall comply with the requirements of this Specification.

G.1.1

Manufacturer shall monitor, record and report jointer production welding variables.

G.1.2

Welding records shall be fully traceable to jointer welds produced and provided to Company in approved format.

G.1.3

Weld procedure and welder qualifications shall be submitted for Company approval prior to the start of production welding.

A.1 Method: Applicable

A.2 Workmanship: Applicable

A.3 Marking: Applicable

A.4 Non-destructive Inspection: Replace

Circumferential jointer welds shall be inspected for longitudinal and transverse imperfections by radiological methods, ultrasonic methods or both; except that fluoroscopic inspection shall not be accepted for Specification compliance. The junctions of circumferential jointer welds and other submerged arc welds shall be inspected by film radiography or non-film radiography imaging techniques.

A.5 Mechanical Tests: Additional Clause

A.5.1 Transverse Weld Tensile Test Jointer Welds

For circumferential mill jointer welds, tests shall be conducted at a frequency of one test per lot of 100 welds, and shall meet the ultimate tensile strength requirements of this Specification for the applicable grade of pipe.

A.5.2 Guided Bend Tests Jointer Welds

For circumferential mill jointer welds, face and root guided-bend tests shall be conducted as specified by this Specification, at a frequency of one test per lot of 100 welds.



Annex B Manufacturing Procedure Qualification for Pipe



Manufacturing Procedure Qualification for Pipe

B.1 Introduction: Applicable

B.2 Additional Information to be Supplied by the Company: Applicable

B.3 Characteristics of the Manufacturing Procedure: Replace

The Manufacturing Procedure Specification submitted shall include, as a minimum, the following detailed information:

i) steel source, including steelmaking method, heat size, deoxidation practice, inclusion shape control practices, and casting method;

ii) aim chemistries and chemical limits for all elements referenced in Clause 9.2.2 of this Specification, and as applicable to pipe of each diameter, wall thickness and material grade to be made for the order;

iii) skelp rolling source, specific rolling and forming practices, including where applicable, typical reduction schedules, final finishing temperatures, and facilities for thermo-mechanical controlled rolling and on-line accelerated cooling;

iv) skelp inspection procedures;

v) details of forming procedures;

vi) pipe manufacturing location, and any plant limitations on wall thickness, diameter, and material grade;

vii) typical welding parameters and consumable combinations applicable to longitudinal, helical, repairs, and circumferential jointer welds;

viii) a description of the quality organization applicable to steelmaking, casting, skelp rolling and pipe manufacturing facilities, including identification of reporting practices, verification mechanisms to assure specified product traceability and responsibility for customer contact related to commercial and quality matters;

ix) a flow chart for pipe manufacturing, finishing, and qualification processes;

x) normal mill control tolerances on all specification dimensions for pipe;

xi) laboratory test equipment present at the manufacturing plant for testing of material properties for the order;

xii) all non-destructive inspection procedures utilized for specification compliance and for production control, as applicable to skelp, pipe body, and welds

xiii) method and typical amount of cold expansion as applicable;

xiv) facilities available for external or internal coating in-house or by a third party;

xv) yard handling, storage, and shipping procedures, including drawings of proposed methods of stacking and securing pipe for shipment and method of end protection; and,

xvi) facilities available for the Company or his representative.

B.4 Manufacturing Procedure Qualification Tests: Applicable



Annex C Treatment of Surface Imperfections and Defects



Treatment of Surface Imperfections and Defects

C.1 Treatment of Surface Imperfections: Applicable

C.2 Treatment of Dressable Surface Defects: Applicable

C.3 Treatment of Non-Dressable Surface Defects: Applicable

C.4 Repair of Defects by Welding: Applicable



Annex D Repair Welding Procedure



Repair Welding Procedure

D.1 General: Applicable

D.2 Repair Welding Procedure Qualification

D.2.1 General

D.2.1.1. - D.2.1.3.: Applicable

Additional Clauses:

D.2.1.4.

For pipe ordered with proven notch toughness properties, repair welding procedure qualification tests shall include Charpy V-notch tests of the weld and heat affected zone. Energy absorption requirements and test temperature for notch toughness test shall be specified for pipe welds.

D.2.1.5.

Defects in the longitudinal, helical and circumferential weld seams shall be subjected to weld repair as specified by ASME Section IX Appendix D, API 5L, and this Specification.

D.2.2 Essential Variables: Applicable

D.2.3 Mechanical Testing

D.2.3.1. - D.2.3.4.: Applicable

D.2.3.5. Hardness Test: Additional Clause

Hardness tests shall be performed as specified by Clause 9.10.6 of this Specification.

D.3 Welding Personnel Performance Qualification: Applicable

D.4 Repair: Additional Clause

a) Back-to-back repairs shall not be permitted

b) Additional repair to a previously repaired area shall not be permitted

c) The maximum length of any repair shall be 250 mm (10 in)

d) The minimum distance of a repair weld from the pipe end shall be 300 mm (12 in)

e) The minimum distance between any two repaired weld locations shall be 300 mm (12 in)

f) There shall not be more than 2 repairs in any 6 m (20 ft) of weld.



Annex E Non-destructive Inspection for Other than Sour Service or Offshore

Service



Non-destructive Inspection for other than Sour Service or Offshore Service

E.1 Qualification of Personnel: Applicable

E.2 Standard Practices for Inspection

a) g) Applicable

Additional:

h) Manufacturer

The Manufacturer shall submit for acceptance by Company prior to the start of a specific order production, detailed written procedures for all non-destructive examination methods, including visual examination. Written procedures shall include a description of reference standards, calibration methods, sensitivity assessment, physical arrangement of test equipment, alignment of test equipment with test item, methods of accurately locating and assessing imperfections, acceptance criteria, technical qualification requirements and recording and reporting requirements, for both dynamic and static modes of inspection, as applicable.

All pipe or all skelp/plate body and edges used in the manufacture of pipe shall be inspected for laminar-type imperfections by an ultrasonic procedure submitted to and accepted by the Company in writing prior to commencement of production.

i) SAW Pipe In Process

Longitudinal and helical welds seams shall be inspected for longitudinal and transverse imperfections by ultrasonic methods, or by a combination of ultrasonic and radiological methods specified, except that fluoroscopic inspection shall not be accepted for Specification compliance.

j) SAW Pipe Final

The full length of every pipe weld seam and jointer weld shall be ultrasonically inspected by the Manufacturer after their final hydrostatic testing. This ultrasonic examination shall be the primary basis for acceptance of the entire lengths of all weld seams of every length of pipe and jointer weld.

E.3 Methods of Inspection

E.3.1 General

E.3.1.2. Replace

a) Longitudinal and helical weld seams shall be inspected for internal and external longitudinal and transverse imperfections by ultrasonic methods as specified by this Specification.

b) Repair welds shall be inspected by radiological methods except that fluoroscopic inspection shall not be accepted for Specification compliance.

c) Circumferential jointer welds produced by double submerged arc welding shall be inspected for longitudinal and transverse imperfections by radiological methods, by ultrasonic methods or by a combination of radiological and ultrasonic methods, except that fluoroscopic inspection shall not be accepted for Specification compliance. Standards of acceptability for circumferential jointer welds shall be as specified by the requirements of this Specification.



d) The junctions of jointer welds and other submerged-arc-welds shall be inspected by film radiography or non-film radiological imaging techniques, or by ultrasonic inspection methods. Fluoroscopic inspection shall not be accepted for Specification compliance. Standards of acceptability for the junctions of jointer welds and other submerged arc welds shall be as specified by this Specification.

E.3.1.3. Replace

The location of equipment in the Manufacturers facility shall be such that all non-destructive inspection for compliance to Specification requirements shall be performed after final hydrostatic testing.

E.3.2 Pipe End Inspection Welded Pipe: Applicable

E.3.3 Pipe End Inspection

E 3.3.1. - E.3.3.2.: Applicable

E.3.3.3. Additional Clause

The finished bevel of all pipe ends shall be inspected for seams and laminations using an ultrasonic, liquid penetrant or magnetic particle method. Acceptance criteria shall be as specified by this Specification.

E.4 Radiographic Inspection of Weld Seams

E.4.1 Radiographic Technique: Applicable

E.4.2 Radiographic Inspection Equipment: Replace

E.4.2.1.

Unexposed base density of film shall not exceed 0.30 and, as a minimum, shall be measured and recorded for each new roll or box of film.

E.4.2.2.

Film density determinations shall be made using a photoelectric densitometer.

E.4.2.3.

Radiographs and their reports shall together be clearly and permanently identified and traceable with respect to pipe number, pipe position, date of examination, examination results, repair location (if applicable), Company name, inspection company name, project name and technician name.



E.4.3 Image Quality Indicators (IQIs): Applicable

E.4.4 Verification of Instrument Standardization: Applicable

E.4.5 Acceptance Limits for Imperfections Found by Radiographic Inspection: Applicable

E.4.6 Defects Found by Radiographic Inspection: Applicable

E.4.7 Traceability of Radiographic Images: Applicable

E.5 Ultrasonic Inspection

E.5.1 Equipment: Applicable

E.5.2 Ultrasonic Inspection Reference Standards

E.5.2.1 - E.5.2.5: Applicable

E.5.2.6 Additional Clause

Reference standards shall contain machined calibration reflectors as follows:

1.6 mm (1/16 in.) radially drilled hole, for application of acceptance limits and for setting of alarm levels applicable to longitudinal and transverse defect inspection.

Rectangular notches; ID and OD, longitudinal orientation, depth 5.0 percent of specified wall thickness, dimensional tolerances as specified in Table E.7 of API 5L, for the verification that the sound beam for longitudinal defect inspection is being directed perpendicular to the weld line.

E.5.3 Instrument Standardization: Applicable

E.5.4 Records Verifying System Capability: Applicable

E.5.5 Acceptance Limits

E.5.5.1 - E.5.5.4: Applicable

E.5.5.5 Additional Clause

For all non-destructive inspection applied for specification and production control purposes, any paint markings applied to the pipe to mark locations where alarm limits were exceeded, or where imperfections were noted, shall be removed or painted over with black paint, as an indication that imperfections have been investigated for compliance to all requirements of this Specification.



E.5.6 Disposition of Defects: Applicable

E.5.7 Weld Repair: Applicable

E.6 Magnetic Particle Inspection: Applicable

E.7 Residual Magnetism

E.7.1 Applicable

E.7.2 Replace

The longitudinal magnetic field shall be measured on the root face of pipe ends prior to loading for shipment from the Manufacturers facility.

E.7.3 Replace

A calibrated Hall Effect gauss meter that produces accurate and consistent results is required. An example of such a meter would be one produced by FW Bell-Series 5100 Hall Effect Gauss-Tesla Meter. The meter must be calibrated at required intervals and the Manufacturers operating instruction followed. Maximum readings occur when the flux lines are perpendicular to the sensor (hall element).

E.7.4 Replace

Measurements shall be made on each end of at least three pipes to be selected at 2 hour intervals during the operating shift. The measurements shall be recorded and documented.

E.7.5 Replace

Residual magnetism shall be measured on both ends of all pipes following any inspection or process that utilizes or produces a magnetic field, prior to loading for shipment from the Manufacturers facility.

E.7.6 Replace

As a minimum, four readings shall be taken approximately 90o apart around the circumference of each end of the pipe. The average of the four readings shall not exceed 30 gauss (3.0 mT), and no one reading shall exceed 35 gauss (3.5 mT). Measurements shall be taken on the root face or square cut face of finished plain-end pipe. The hall element area of the probe shall be in contact with the root face or square cut face when the reading is taken. The flux lines shall be perpendicular to the hall element of the probe to ensure that maximum readings are obtained.

E.7.7 - E.7.10 Applicable

Additional Clauses:

E.7.11

Measurements made on pipe in stacks or bundles are not considered valid. Pipes shall be separated by at least 300 mm (12 in) and not be in contact in order to achieve valid residual



magnetism readings. Pipe shall not be in contact with the ground and shall be off the ground at least 150 mm (6 in) in height.

E.7.12

If the pipe has undergone a coating process that utilizes a magnetic field or has a magnetic field produced as the result of static electricity being discharged, all pipe ends shall be measured prior to stockpiling or shipment from the facility. The results shall be documented and recorded.

E.8 Laminar Imperfections in the SAW Pipe Body: Applicable

E.9 Laminar Imperfections along the Strip/Plate Edges or Pipe Weld Seam of SAW Pipe: Applicable

E.10 Disposition of Pipes Containing Defects: Applicable



Annex F Materials Testing Frequency Table



Materials Testing Frequency Table Table F-1 Specification Testing Frequency

PROJECT: PURCHASING COMPANY: ENBRIDGE PIPELINES INC.

Test Test Procedure Acceptance Criteria Test Frequency Chemical Tests Heat Analysis 10.2.1.2. 9.2.2 9.2.6 Product Analysis 10.2.2. & 10.2.4.1. 9.2.2 9.2.6

Tension Tests Transverse Body 10.2.3.2. & 10.2.4.2. 9.3.4 9.3.3.2. Transverse Weld 10.2.3.2. & 10.2.4.2. 9.3.5 9.3.3.2.

Guided Bend Tests Face Bend 10.2.3.6. & 10.2.4.6. 9.7 9.7.3 Root Bend 10.2.3.6. & 10.2.4.6. 9.7 9.7.3

Charpy Impact Tests Transverse Body 10.2.3.3. & 10.2.4.3. Specification

Datasheet 9.3.3.2.

Transverse Seam Weld WM

10.2.3.3. & 10.2.4.3. Specification Datasheet

9.3.3.2.

Transverse Seam Weld HAZ


9.3.3.2.

Transverse Jointer Weld WM


9.3.3.2.

Transverse Jointer Weld HAZ


9.3.3.2.

Hardness Tests Transverse Body 8.6.1.4. & 10.2.4.8. 9.10.6 8.6.1.4. Transverse Seam Weld

8.6.1.4. & 10.2.4.8. 9.10.6 8.6.1.4.

Jointer Weld 8.6.1.4. & 10.2.4.8. 9.10.6 8.6.1.4.



Annex G Submerged-Arc-Welded Pipe Specification Datasheet



Submerged-Arc-Welded Pipe Specification Datasheet (Page 1 of 2) PROJECT: PURCHASING COMPANY: ENBRIDGE PIPELINES INC.

Pipe Requirements

Item No. OD (in.) WT (in.) Grade Category

Design and Operating Information

Class Location

Maximum Operating

Pressure (psiq)

Maximum Operating

Temperature (F)

Minimum Operating

Temperature (F)

Notch Toughness Tests

Test Location

Test Temp (F)

Minimum Energy (Joules) Single

Specimen Single Test All-Heat

Average Charpy Impact Test Pipe Body

Weld & HAZs

Fracture Appearance % Shear Note 1: Single test means average of three CVN or two DWTT specimens Note 2: Applies to orders filled with more than five heats Note 3: Energy requirements are for full size specimens

Pipe Length

Minimum Single Pipe Length (ft.)

Maximum Single Pipe Length (ft.)

Minimum Average Pipe Length (ft.)

Pipe Coating

Coating Location Coating Type Coating Thickness

Pipe Colour Code

Required Y/N Colour



Submerged-Arc-Welded Pipe Specification Datasheet (Page 2 of 2) Supplementary Requirements Plant Inspection:

End Preparation:

External Weld Flush-Off:

Plant Inspection:

Other:

Revision Description Initiated By Reviewed By Approved Date

Button2: