facility piping construction

8/9/2019 Facility Piping Construction

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FACILITY CONSTRUCTION SPECIFICATION

Facility Construction Specification (FCS)

Canada

Facility Piping ConstructionFCS012(2011)


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FACILITY PIPING CONSTRUCTIONFACILITY CONSTRUCTION SPECIFICATION FCS012-2011

Applicability

Revision Description Effective Date

4.0 The contents of the latest revision shall be mandatory andeffective immediately if it pertains to CODES,REGULATIONS, AND/OR SAFETY.

If the contents of the latest revision are as a result ofimprovements in best practices, and the project is in PRE-

BID and/or BIDDING stages, then it is mandatory that thelatest revision be effective immediately. However, theproject PM/Lead has the discretion to make the finaldecision provided that any decision to not follow the latestrevision must be recorded/documented in a projectdecision log and endorsed by project team personnel of aManager level or higher.

If the contents of the latest revision are as a result of

improvements in best practices, and the project is inPOST-AWARD stage, then it is recommended that thelatest revision be effective immediately. However, theproject PM/Lead has the discretion to make the finaldecision provided that any decision to not follow the latestrevision must be recorded/documented in a projectdecision log and endorsed by project team personnel of aManager level or higher.

January 11, 2011


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Table of Contents

1

General ..................................................................................................................... 1

2 Related Standards and Abbreviations ................................................................... 12.1 Company Standards .......................................................................................... 1

2.2 Industry Standards ............................................................................................ 1

2.3 Regulatory Standards ........................................................................................ 1

2.4 Abbreviations ..................................................................................................... 1

3

Materials ................................................................................................................... 2

4 Quality Assurance ................................................................................................... 24.1 NDE Records ...................................................................................................... 3

4.2 Shop Fabrication Records ................................................................................ 3

4.3 Site Project Records .......................................................................................... 3

4.4 Identification of Welds ....................................................................................... 4

5 Welding .................................................................................................................... 45.1 General Requirements ....................................................................................... 4

5.2 Welding Procedures .......................................................................................... 5

5.3 Qualification of Welders .................................................................................... 6

5.4 Standards of Acceptability for Production Welds ........................................... 7

5.5 Non-Destructive Examination ........................................................................... 7

6 Construction practices ............................................................................................ 8

6.1

General ............................................................................................................... 8

6.2 Repair or Removal of Field Joint Defects ....................................................... 10

7 Shop Fabrication Piping ....................................................................................... 10


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13 Procedure for Pump Piping Installation ............................................................... 1513.1 Preparation ....................................................................................................... 15

14 Torquing Procedure .............................................................................................. 16

15 Insulation ............................................................................................................... 1615.1 Above Ground Insulation System ................................................................... 17

15.2 Below Ground Insulation Systems ................................................................. 17

15.3 Flexible Reusable Pipe Insulation................................................................... 18

Appendix A Tightening and Torquing Flanges............................................................... 19

Appendix B Flange Installation Quality Control Form ................................................... 32

Appendix C Tubing Connection Verification Form ........................................................ 34

Appendix D Plastic Warning Tape Detail Drawing ......................................................... 36

Appendix E Enbridge Construction Services Radiograpohy Examination Scope andProcedures for NDE Contractors ..................................................................................... 38

Appendix F Boiler Pressure Vessel Governing Bodies for Provinces and Territories 55

Appendix G Examples of WPS Datasheets and Weld Procedure Material Matrices .... 58


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1 General

This Specification applies for facility piping construction, mainline valve assembly sections andcomponents manufactured remote from the final location only and does not cover mainlinepipeline construction.

Piping materials, fabrication, installation, inspection and testing shall conform to the latestedition of CSA Standard Z662 Oil and Gas Pipeline Systems and shall also comply with theapplicable standards referenced in CSA Z662 and with National Energy Board Onshore PipelineRegulations.

Where an item or activity is not covered by CSA Z662, it shall be completed in accordance withthe latest edition of ASME B31.3 Process Piping.

The term pipingas used herein includes the pipe itself, valves, fittings, flanges, gaskets,bolting, piping components, gauge and other instrument connections, vents, drains and the pipesupport system. For instrument connections, piping includes the branch up to and including thefirst block valve.

Shop fabrication scope of work shall be approved by the Company.

2 Related Standards and Abbreviations

The following codes and standards are applicable to all work covered in this Specification.

2.1 Company Standards

EES023 Flanges and Fittings

EES129 Auxiliary Valves

2.2 Industry Standards


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CWB Canadian Welding Bureau

ERCB Energy Resources Conservation Board

FCS Facility Construction Specification

HAC Hydrogen Assisted Cracking

IFC Issued For Construction

MT Magnetic Particle Testing

NDE Non Destructive Examination

NDT Non Destructive Testing

NEB National Energy Board

NEMA National Electrical Manufacturers Association

NPS Nominal Pipe Size

PT Penetrant Testing/Liquid Penetrant

RT Radiographic Testing

SMAW Shield Metal Arc WeldingUT Ultrasonic Testing

WPS Weld Procedure Specification

3 Materials

In general, the Company will supply all piping materials larger than NPS6 and the Contractorshall supply all piping materials NPS6 and smaller. Exceptions to this general rule will beidentified in the drawings.

Materials supplied by the Company will be specified on the drawings or in the contract. TheContractor shall supply all remaining material required to complete the work. All Contractor


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4.1 NDE Records

The Company reserves the right to inspect all NDE reports/readings for auditing purposes. Filmand reports/readings shall be catalogued according to the isometric weld map Q drawings. TheContractor shall be responsible for the insertion of the applicable weld isometric drawing as wellas the carbon copied/photocopied signed report, into the radiographic envelope. The isometricdrawing must identify the weld detail information, such as heat numbers of adjoining members,welder identification and the weld location itself. All film and reports/readings must be forwardedto the Company for record retention prior to final payment for work.

4.2 Shop Fabrication Records

Prior to the shipment of fabricated piping, the Contractor shall supply one copy of the followingdocumentation for the Company's review and approval:

a) all Non Destructive Examination Reports;

b) Weld Visual Inspection Reports;

c) Weld Traceability Identification drawings (identifying welders, weld numbers, NDE numbers,Weld Procedure numbers, etc.);

d) Material Traceability Identification drawings (identifying material description, mill testnumbers, functional tags, etc.);

e) Material Test Certificates (Mill Test Report, Certification of Compliance, Mill AnalysisReport);

f) Flange Bolt Torque Reports;

g) Pressure Test Reports (see FCS014 - Pressure Testing - Facility Piping); and

h) As-built red lined drawings (minimum 11x17).

The Contractor and the Inspector shall ensure all welds are identified as per the isometric weldmap Q drawings, on x-ray films and/or UT report, final weld map, as-built and NDT report. Thedocuments shall identify the Contractor Contractor Quality Inspector Company Inspector and


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4.4 Identification of Welds

The work of each welder shall be identified according to a number assigned by the Contractor.Identification of welding shall be by a non-erasable crayon or paint-type pencil approved by theCompany. This welder identification shall be transferred to the weld mapping and tracabilityrecords immediately. Welder identification numbers shall be unique and not be re-assigned onthe project. Steel dyes shall not be used for identification purposes.

5 Welding

5.1 General Requirements

5.1.1 Types and Methods of Welding

Production welding shall be performed by welders qualified in accordance with weldingprocedure specifications approved and accepted by the Company.

Welding processes shall be selected and procedures shall be prepared in accordance with thelatest edition of CSA Z662 or ASME Section IX, whichever is appropriate for the type of weldingperformed, and this Specification.

Welding procedures shall be such that the completed welding will satisfy all designrequirements. Consideration will be given to welding heat input, consumable selection and,when necessary, to post-weld heat treatments.

Any special welder qualifications shall be identified in the project specification, i.e., welding on aliquid filled/hot and/or purged pipeline. Welding on in-service pipelines is to be completed onlyby Company trained and qualified welders under the supervision of Operations/PipelineMaintenance personnel.

5.1.2 Definitions

Welding terms and definitions will be as per the latest editions of CSA Z662 and AWS Standard


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5.1.4 Electrode Storage and Handling

When required, the Contractor shall supply controlled hydrogen welding electrodes inundamaged hermetically sealed containers and store them to avoid moisture contamination.Once the seal has been broken, the materials shall be stored in cabinets or ovens designed forthe purpose, and continuously maintained at holding temperatures recommended by themanufacturers.

Any controlled hydrogen electrode which has been out of the original container or the heatedoven for more than one hour shall be discarded or re-dried in accordance with the applicableelectrode manufacturer's recommendations with respect to time and temperature. Electrodes

that have been wet shall be discarded.

5.1.5 Welding During Inclement Weather

Welding shall not be performed when the quality of completed welds would be impaired byweather conditions including but not limited to cold, airborne moisture, blowing sand, highwinds, etc. The Contractor shall provide wind breaks of a type that will give adequate protectionto the welder and the weld.

5.2 Welding Procedures

The qualification of production welding procedures and repair welding procedures shall beperformed concurrently.

Weld procedures shall be developed as specified by the latest editions of CSA Z662, or forother than partial-penetration butt welds, welding procedure specifications that are establishedand qualified as specified in the ASME Boiler and Pressure Vessel Code Section IX may beused, provided that:

a) the welder qualification tests are as specified in the ASME Boiler and Pressure Vessel CodeSection IX;

b) the standards of acceptability for visual and non-destructive inspection of the production


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g) Enbridge design requirement for above grade Pipeline Facility weldments requiredemonstrated toughness testing at temperatures as low as -45C (-50F). Cellulosic coated

electrodes are not necessarily intended for these low temperature applications. As a result,Pipeline Facility welding applications in which all passes are to be made with cellulosecoated electrodes are to be discouraged and will be restricted to below grade joining of pipeto pipe.

Compared to low hydrogen electrodes, cellulosic coated electrodes increase potentialsusceptibility to delayed hydrogen assisted cracking (HAC). In order to determine if HAC hasoccurred in completed welds, a higher degree of inspection rigor will be required. As such,100 percent delayed NDT (next day or longer) of all welds will be required to detect cracking

which may have developed after completion of welding.Welding procedures shall be submitted by the Contractor to the Company for review andapproval by Pipeline Integrity or Pipeline Integrity's designate. Alternative procedures must besubmitted as soon as possible to allow a reasonable approval period for the Company withoutaffecting the work schedule. As a guide, allow two weeks for Company review and approval ofwelding procedures. Contractors must submit WPS in conjunction with a welding matrix thatidentifies the specific material, WPS and other relevant variable combinations that are requiredfor construction. Refer to Appendix G - Examples of WPS Datasheets and Weld Procedure

Material Matrices. As a minimum, all WPS Datasheet(s) submitted for company approval shallcontain the information provided in the appended examples. Prior to performing a weld, thecorresponding company approved WPS Datasheet shall be signed off by each welder using theDatasheet and submitted as part of the required permanent records retention turnoverdocumentation.

5.3 Qualification of Welders

Each welder shall be required to provide proof of a provincial welding certification (i.e., Alberta

"B" Pressure or a CWB certification) and pass a welder qualification test by visual inspectionand either destructive or radiography, or with prior company approval, ultrasonic methods andusing an approved qualified welding procedure. The acceptance criteria shall be in accordancewith CSA Z662 or ASME Section IX whichever is applicable. The Contractor is responsible for


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5.4 Standards of Acceptability for Production Welds

The Contractor shall employ such means required to ensure piping integrity. The standards ofacceptability are minimum requirements on welding workmanship and shall meet the standardsof acceptability as set out in CSA Z662 or ASME B31.3, whichever is applicable. The Companyshall be permitted to reject welds which appear to meet these non-destructive inspectionstandards of acceptability if, in its opinion, the depth, location or orientation of the discontinuitymight be detrimental to the structural integrity of the welds.

Records of welding parameters used for production welding and the resolution of any non-conformance shall be maintained to demonstrate compliance with the requirements of this

Specification and the welding procedure specifications. Records shall comprise part of thepermanent records retention.

The Company reserves the right to measure welding parameters on any production weld. Whenthe parameters measured on a weld do not comply with the specified values, the Companyreserves the right to reject such weld and any weld made after the last compliant record unlessthe party responsible for the work can demonstrate such welds are in compliance.

Non-compliance to the requirements of this Specification and of the welding procedurespecification shall be cause for weld rejection.

5.5 Non-Destructive Examination

5.5.1 Non-Destructive Examination Procedures

The NDE service provider shall be directly contracted by the Company. All NDE shall becoordinated by the construction contractor in a planned and efficient manner.

The NDE Contractor shall satisfy the Company that the proposed non-destructive examination

methods are capable of identifying imperfections that could result from the particular weldingprocess and joint configuration being considered. The NDE Contractor shall perform their scopeof services in accordance with the latest version of the Enbridge Construction ServicesRadiography Examination Scope and Procedures for NDE Contractors (see Appendix E -


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The Contractor shall provide a suitable high-intensity viewer with sufficient capacity to illuminateradiographs of excessive density without difficulty to verify film flash information, repair locations

and to ensure traceability requirements.All attachment welds to the station piping shall be 100% inspected by magnetic particlemethods.

All socket welds shall be subject to 100% inspection using magnetic particle.

Welds on fire water systems shall be subject to a minimum of 15% radiographic inspection.

The Company may choose to ask for a demonstration of an alternate non-destructive methodthat can accurately detect weld imperfections. Once satisfied, the Company shall approve the

use of alternate examination techniques for the work being considered.

5.5.2 Qualifications of NDE Personnel

Personnel engaged in non-destructive examination shall be qualified as specified byCAN/CGSB 48.9712. Persons with a minimum of Level II or III shall interpret radiographs. OtherNDE methods shall be performed only by personnel who are qualified to interpret the results.The Company may ask that non-destructive inspection personnel demonstrate their ability tocorrectly interpret indications.

6 Construction practices

6.1 General

A welding datasheet shall be issued by the fabrication contractor to each welder defining theprocess variables and constraints prior to commencement of welding for each WPS used.

For position welds, the minimum number of welders shall be as follows:a) one for less than or equal to NPS 12; and

b) two for greater than NPS 12.


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Where a pipe is cut, pipe identification such as pipe number, specification, grade, heat number,manufacturer and date of manufacture shall be transferred to both ends of the pipe. Dye

stamping of the pipe or weld shall not permitted for that purpose.The welding of supports, bracing bars or counter balance weights to pressure piping andcomponents shall not be permitted.

Bolt holes of all flanges shall straddle the north-south (N-S) or vertical centre lines unlessotherwise noted on the drawings.

Electric welded pipe shall be aligned so that the longitudinal seam will be located on the uppersurface of the line within 300 mm of the vertical (preferably at the 2 oclock and 10 oclock

positions). Successive joints of pipe shall be rotated to left or right by not less than 200 mm toprevent the aligning of weld seams in adjacent pipe sections. Longitudinal seams on pipe bendsshall be located on the neutral axis of the bend.

The inside diameters of piping components shall be aligned accurately within existing toleranceson diameters, wall thickness and out-of-roundness.

Dimensions of flanged branch connections from centre line of pipe to face of flange shall beequal to the dimensions of a standard welding tee plus the length of a weld neck flange unlessotherwise noted on the drawings.

For stub-ins, the hole cut for the branch shall have the bore the full size of the branch innerdiameter.

Nipples for connections on insulated piping shall have enough length so as to extend beyondinsulation by a minimum of 38 mm.

6.1.1 Internal Cleaning of Station Piping and Spools

Each joint of pipe or spool shall be internally inspected and, if required, cleaned to ensure allforeign material is removed from the entire joint length. The internal cleaning process will beverified by the Company Inspectors.

Preparatory to aligning pipe for welding, the bevelled ends of each joint shall be thoroughly


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6.2 Repair or Removal of Field Joint Defects

6.2.1 Repair Welding Procedures

The Contractor shall submit welding repair procedures for the Company's approval. Theacceptance of repair procedures is contingent upon a demonstration of such procedures foreach type of repair to be undertaken. The Contractor shall conform to the approved repairwelding procedures for each instance of repair.

At the option of the Company and under the supervision of the Inspector, with the exception ofcracks, welds may be repaired by grinding or gouging to sound metal and re-welding. Such

repaired areas shall be re-inspected per CSA Z662 or ASME B31.3 requirements, whichever isapplicable. No further repairs shall be allowed in previously repaired areas without Companypermission.

6.2.2 Repair of Welds

The accumulated length of weld repairs shall not exceed 25% of the total length of the girthweld.

When welding piping together at places where cut-outs have been made for any reason, onereplacement weld will be used if it is practical to pull the piping back into position withoutimposing strain on the piping. Otherwise, a pup jointof not less than 1.22 m shall be installed.

6.2.3 Arc Burns

Arc shall be struck only in the weld groove. Arc burns on the pipe surface shall be repaired inaccordance with CSA Z662 and the Company must be notified prior to repair.

7 Shop Fabrication Piping

7.1 General


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7.3 Time of Inspection

All piping shall be subject to inspection by the Inspector at any time during fabrication. Amplenotice of when fabrication will start and when tests will be made shall be given to the Companyso that the Inspector may witness any particular phase of the work as per Enbridgerequirements (e.g., hydrotesting).

7.4 Subcontracting

Should the Contractor subcontract any portion of the work, the Subcontractor shall be subject toinspection and testing by the Inspector as would be the case if the Contractor were to perform

the fabrication in his own shop. The Contractor is responsible for managing all aspects of theirSubcontractors as it relates to all Enbridge requirements. Subcontractors must be pre-approvedby the Company.

7.5 Location of Tests

All inspection and tests shall be made at the Contractors fabrication shop unless agreed to bythe Company.

All flanged connections to be made with new specified gaskets and torquing of the boltsfollowing Appendix B - Flange Installation Quality Control Form. Connections shall bedocumented by the contractor and verified by the Inspector prior to coating/painting as agreedupon by the project team.

7.6 Receiving, Shipping and Handling

The Contractor is responsible for receiving and inventory of all Company supplied material. The

Contractor is responsible for preparing, loading and transporting all fabricated piping to site.Before transporting, all piping spools shall be cleaned on the inside and outside. Suitable endclosures shall be provided and installed to protect piping against the ingress of dirt and moistureduring transportation and site storage. The Contractor shall ensure that all piping spools are


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for approval the proposed lifting hook and spreader bar design. A registered ProfessionalEngineer shall approve the engineering integrity of the design prior to submission.

All piping and fittings shall be kept free of dirt and other foreign matter while storing, handling,fabricating or erecting. While in storage, piping and fittings shall be kept off the ground in a safe,neat and orderly fashion on sleepers, racks, etc. Flange faces, open ends and pipe threadsshall be protected prior to, during and after installation.

Just prior to installation, the Contractor shall request a visual inspection by the Inspector of thepiping and fittings to ensure that it is clean, dry and free of foreign matter.

The Contractor shall remove all dents in the pipe by cutting out the dented length of the pipe, re-bevelling the cut ends, welding up and recoating upon approval by the inspector/project team. Ifthe Contractor has dented the pipe, this work shall be at the Contractors expense.

8.2 Pipe Fabrication

When the Contractor fabricates piping, they shall determine the location of field welds ondrawings. It is the Contractor's responsibility to check existing facilities and its own work to verifylocation, elevations, etc. in order to ensure that adequate field fit allowances are provided. Forall piping, it is the Contractor's responsibility to field check all elevations and dimensions to

ensure correct fit up of the piping and equipment.

Where the Contractor will be completing piping left by others, the cutting off of weld caps andremoving blind flanges, etc. (except double faced blinds) shall be the responsibility of theContractor at no cost to the Company.

8.3 Pipe Installation

Open ends of installed pipe shall be sealed at the end of each day.

Where screwed fittings and valves are specified to be back-welded, a continuous seal weld shallbe made. Thread compound shall not be used on threaded components that will be sealwelded. Threads must be fully covered by weld bead.


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Buried flanges shall not be used for joining pipe sections unless specifically indicated in thedrawings.

When stringing alongside a pipe trench, pipe shall be securely supported on timber or sand-filled sacks supported by skids in such a way as to prevent damage to the exterior surfaceand/or painting/coating of the piping.

Piping for underground service shall be checked before being lowered into the trench to ensurethat no foreign material, manufacturer's defects or cracks exist that might prevent the proper

jointing of the pipe or its operation. Piping shall be carefully lowered into the trench by means ofapproved tools or equipment (i.e., cranes, side booms, etc.) in a manner that will preventdamage to the piping.

When installing small diameter fittings to tap into piping, before backfilling cover the fitting with ashort length (i.e., up to 2 ft.) of plastic pipe or a pylon as a warning for future excavatingactivities.

When backfilling buried small piping (less than 50.8 mm (2 in.) diameter), install mechanicalprotection and plastic warning tape/ribbon in accordance with Appendix D - Plastic WarningTape Detail Drawing.

Plastic warning tape/ribbon shall be placed over all station piping during backfill. As a guideline,

plastic warning tape/ribbon shall be buried approximately 450 mm (18 in.) above the top of thelargest utility in accordance with Appendix D - Plastic Warning Tape Detail Drawing. Wherepractical, yellow tape continuously labelled Cautionshall be used for station piping.

Plastic Marking Tape shall be of a type specifically manufactured for marking undergroundfacilities. The tape shall be acid and alkali-resistant polyethylene film, 150 mm (6 in.) wide withminimum thickness of 0.10 mm (0.004 in.). Tape shall have a minimum strength of 121.4 Mpa(1750 PSI) lengthwise and 10.3 Mpa (1500 PSI) crosswise.

Precaution shall be taken to ensure that displacement of underground pipe does not occurthrough soil displacement or flotation due to the presence of trench water. Pipe that has beendisplaced shall be removed from the trench and re-laid after the trench is dewatered andreshaped as necessary.


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Overhead clearance shall be 2.3 m (minimum) in buildings and above walkways and platforms.

Cold springing of piping shall only be performed when requested on the drawings. No cold

springing shall be done except when the Company has given specific approval prior to the work.In general, cold springing will not be approved on any piping larger than 60.3 mm diameter.

Piping shall not be run near the floor, across walkways or working spaces where it will create ahazard. Areas for access shall be free of piping interference.

Under no circumstances shall buried threaded connections be used.

No piping less than NPS 2 shall be buried. When routing smaller piping from above grade to aburied connection, a reducer shall be located a minimum of 0.3 m (1 ft.) above finished grade.

Provision should be made for the isolation and removal of the above grade piping withoutdraining buried process lines (i.e. valve and union or flanges).

The piping shall be installed with flanges or unions so that the removal of equipment can takeplace without the cutting of any piping.

Lube oil, gland seal and cooling piping at equipment such as pumps shall be supportedindependent of the equipment and arranged to permit easy dismantling of the equipment withoutremoval of block valves.

No bushings or sharp edge swages shall be used.Modified fittings such as tapped blind flanges shall not be used.

In areas without leak detection and spill containment threaded piping is to be avoided in favourof welded or Swagelok SS tube and tube compression fittings.

11 Tubing Installation

All tubing connections shall be made using only Swagelok tube fittings and shall be made by anindividual who has completed the Swagelok Tube Fitting Installation and Safety Seminar. Theinstaller shall follow Swagelok's installation instructions for tube fittings and possess a SwagelokCertified Safety Installation Card. A copy of this card shall be retained for the PermanentC t ti R d All t bi ti h ll b i t d d d t d th f


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During installation of spring hangers or supports on pump piping systems, it is essential thatpumps be aligned within the limits of misalignment allowed by the pump manufacturer,

applicable Company specifications and industry standards. At this stage, the piping system willbe empty of process fluid and at ambient temperature. Pipe flanges should be carefully mated tothe pump to minimize initial pipe strains on the pump.

Compressor or turbine piping which will contain vapour shall be aligned cold when the system iscomplete with stops removed.

Installer shall not modify, add, delete or move supports on a spring supported system withoutthe approval of the design engineer.

13 Procedure for Pump Piping Installation

This procedure should be followed to ensure pump case stress is minimised by proper pumpsuction and discharge piping installation and alignment.

If the contractor has an alternative installation procedure, it shall be submitted to the CompanyProject Engineer for approval. This shall be done well in advance to permit discussion andapproval prior to its use.

Axial direction means in the same direction as the pump shaft. Radial direction is perpendicularto the pump shaft direction.

13.1 Preparation

1) The pump and motor should be aligned to within 0.001 in./ft. in the horizontal and verticalangular offset and within 0.001 in. soft foot (see FCS015 - Mechanical EquipmentInstallation). The pump flanges should be aligned with the horizontal scribe marks on thepump base.

2) Mount dial indicators on the horizontal, vertical and axial positions taking readings off thepump hub with the spacer removed. This will indicate whether there is any movement in thepump when the pump elbows are tightened.


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6) After the tie-in weld is made, the remaining tack welded joints may be completed. Twowelders should work 180 apart to minimise distortion due to the heat of welding. The

Inspector shall witness the final tie-in weld.7) Allow the pipe to cool.

8) The dial indicators should read zero movement (0.002 in. maximum) in the pump hub.

9) Loosen both pump elbow flanges to relieve any induced strain from the welding andretighten as in step 3 above. There should be zero movement in the pump hub when thepump elbow is tightened.

13.1.2 Method 2 (Tie-In Welds on Pump Elbow)

1) Fabricate and install the pump piping up to the pump elbow and tighten the pipe support.

2) The horizontal flange below the pump elbow must be level to within 0.002 in./ft. in the axialand radial directions.

3) Shim the stub end flange faces the thickness of a compressed flexitallic spiral wound gasketaway from the opposing raised face weld neck flange to determine the proper length of thestub ends before welding them to the elbow. Insert 4 bolts at the 3, 6, 9 and 12 oclock

positions and soft tighten to hold the shims in place.4) Cut the stub ends and weld the elbow. Two welders working 180 apart to minimise

distortion due to the heat of welding shall weld the pipe.

5) Shim the bottom elbow flange to the weld neck flange as in step 3 and note the upper flangeface in relation to the pump flange. The faces should be parallel to within 0.020 in./ft. in thevertical and axial directions. The raised faces should be concentric with each other to within0.060 in. If not, the elbow may require mitre cutting and re-welding to obtain thesetolerances.

6) Assuming proper face tolerances have been achieved, install the bolts and gaskets. Handtighten the bolts on the lower flange. This will help ensure the faces are square for the finaltie-up.


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Insulation shall not be installed until all radiographic inspection and testing is complete and allhydrostatic testing and tracing installation is complete. Temporary support and handling ofinsulated pipe shall comply with the insulation manufacturer's recommendations.

Insulated pipe shall only be primed as per FCS019 - Painting and P-210 - Shop and FieldPainting: ConstructionAppendix 1.

When a line is to be insulated, the insulation shall extend to point of connection to an un-insulated line or to equipment.

15.1 Above Ground Insulation System

Insulation shall be as per identified in the IFC drawings.

For fibreglass insulation, the following shall apply:

a) insulation for fittings, flanges and valves shall be mitred sections of pipe insulation or pre-formed shapes;

b) insulation shall be installed such that longitudinal joints are staggered on adjacent sectionsand with all circumferenced joints tightly butted;

c) insulation shall be securely wired in place with 18 gauge stainless steel wire on 12 in.centres;

d) joints and voids shall be filled with insulation cement;

e) external finish shall be corrugated aluminum jacketing, 0.016 in. thick, complete with integralvapour barrier, Childers or equal. Pre-formed aluminum elbow, tee, valve, flange, etc. jacketsections shall be used;

f) jacketing shall be secured using 0.5 in. wide by 0.020 in. thick type 304 stainless steelbands on 12 in. centres, using stainless steel wing seals;

g) joint sealant shall be Childers CP-70 or equal;

h) jacket joints shall be lapped a minimum of 2 in. On horizontal piping, jacket seams shall beplaced at the side of the piping below the centreline with a lap downwards to shed water;


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15.3 Flexible Reusable Pipe Insulation

a) Flexible covers shall be designed to enclose the entire seal drain piping from the pump upto, and including, the orificed gate valve.

b) Covers shall have all parting lines covered with a flap constructed of the same material asthe outer jacket. The flap shall be installed in a manner which provides proper watershedding. The flap shall be secured with Velcro.

c) All covers shall have sufficient through blanket quilting pins installed in sufficient quantitiesto prevent the insulation insert from shifting or pulling away from the edges of the covershell.

d) Wind flaps complete with drawcords shall be incorporated into the blanket design tosecurely close the blanket ends over the line insulation.

e) All drawcord ends shall be heat sealed to prevent cord fraying. Cord ends shall be knottedto prevent the cord from pulling out of the wind flap.

f) Sewn covers shall use inside seam construction and shall have all slits and penetrationopenings top stitched to provide added strength at stress points.

g) All blankets shall have a printed tag sewn to the outer jacket. The tag shall identify:

i. Manufacturers name and address;

ii. Date of manufacture; and

iii. Manufacturers part or serial number.

k) Covers shall be sewn based on dimensions taken from the completed pump seal drainpiping according to the insulation manufacturers instructions.

l) Materials:

i. Outer Jacket and Inner Liner 14 oz./sq. yard Teflon coated fibreglass cloth

ii. Insulation 1 in. thick type E needled fibreglass cloth


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Appendix ATightening and Torquing Flanges


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Tightening and Torquing Flanges

As per the Enbridge Operating and Maintenance Procedures Manual Book 3, Subject Number

06-03-17, March 31, 2010. Changes to this Appendix must first occur in the O&MP with theinvolvement of Facilities Integrity.


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Appendix BFlange Installation Quality Control Form


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Appendix CTubing Connection Verification Form


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Appendix DPlastic Warning Tape Detail Drawing


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Appendix EEnbridge Construction Services Radiograpohy Examination Scope

and Procedures for NDE Contractors


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Appendix FBoiler Pressure Vessel Governing Bodies for Provinces and

Territories


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British Columbia Safety AuthoritySafety Standards Act Power Engineers, Boiler, Pressure Vessel and Refrigeration SafetyRegulation

http://www.safetyauthority.ca/

Alberta Boilers Safety AssociationSafety Codes Acthttp://www.absa.ca/

Saskatchewan Boiler and Pressure Vessel Safety BoardB5.1 Boiler and Pressure Vessel Act, 1999

http://www.cpsp.gov.sk.ca/Boiler

and

Pressure

Vessel

Safety

Manitoba Labour and Immigration Workplace Safety and Health DivisionThe Steam and Pressure Act The Power Engineers Acthttp://www.gov.mb.ca/labour/safety/me/pressure.html

Ontario TSSA Boiler and Pressure Vessel ActTechnical Standards and Safety Act, 2000http://www.tssa.org/

Quebec Service de l'inspection de la Fabrication D'appareils sous pressionAn Act Respecting Pressure Vesselshttp://www.rbq.gouv.qc.ca/dirEnglish/general/Pressure_Vessels_forms.asp

Nova Scotia Department of Labour and Workforce DevelopmentSteam Boilers and Pressure Vessel Act Technical Safety Acthttp://www.gov.ns.ca/lwd/legislation/

New Brunswick Department of Public SafetyBoiler and Pressure Vessel Acthttp://www.gnb.ca/0276/indexe.asp
http://www.safetyauthority.ca/http://www.safetyauthority.ca/http://www.absa.ca/http://www.absa.ca/http://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.gov.mb.ca/labour/safety/me/pressure.htmlhttp://www.gov.mb.ca/labour/safety/me/pressure.htmlhttp://www.tssa.org/http://www.tssa.org/http://www.rbq.gouv.qc.ca/dirEnglish/general/Pressure_Vessels_forms.asphttp://www.rbq.gouv.qc.ca/dirEnglish/general/Pressure_Vessels_forms.asphttp://www.gov.ns.ca/lwd/legislation/http://www.gov.ns.ca/lwd/legislation/http://www.gnb.ca/0276/index%E2%80%90e.asphttp://www.gnb.ca/0276/index%E2%80%90e.asphttp://www.gnb.ca/0276/index%E2%80%90e.asphttp://www.gnb.ca/0276/index%E2%80%90e.asphttp://www.gnb.ca/0276/index%E2%80%90e.asphttp://www.gov.ns.ca/lwd/legislation/http://www.rbq.gouv.qc.ca/dirEnglish/general/Pressure_Vessels_forms.asphttp://www.tssa.org/http://www.gov.mb.ca/labour/safety/me/pressure.htmlhttp://www.cpsp.gov.sk.ca/Boiler%E2%80%90and%E2%80%90Pressure%E2%80%90Vessel%E2%80%90Safetyhttp://www.absa.ca/http://www.safetyauthority.ca/


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Nunavut Public and Business ServicesSafety Services DivisionBoiler and Pressure Vessel Acthttp://cgs.gov.nu.ca/en/protection services/safetyservices/boiler
http://cgs.gov.nu.ca/en/protection%E2%80%90services/safetyservices/boilerhttp://cgs.gov.nu.ca/en/protection%E2%80%90services/safetyservices/boilerhttp://cgs.gov.nu.ca/en/protection%E2%80%90services/safetyservices/boilerhttp://cgs.gov.nu.ca/en/protection%E2%80%90services/safetyservices/boilerhttp://cgs.gov.nu.ca/en/protection%E2%80%90services/safetyservices/boiler


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Appendix GExamples of WPS Datasheets and Weld Procedure Material Matrices


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FACILITY PIPING CONSTRUCTION


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FACILITY CONSTRUCTION SPECIFICATION FCS012-2011

REVISION 4 0 JANUARY 11 2011 PAGE 63

facility piping construction

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