SAEP-352 - Welding Procedures Review and Approval.pdf

Engineering Procedure SAEP-352 Welding Procedures Review and Approval

20 October 2009

Welding Standards Committee Members Awwami, Adnan Ni'Mah, Chairman Rao, Sanyasi, Vice Chairman Carrera, R L Carswell, Raymond J. Juraifani, Hatim Hamad Keen, Peter David Muslim, Husain Muhammad Nasri, Nadhir Ibrahim Niemeyer, Dennis Charles Sabti, Tareq Ibrahim Sayed Nasir, Ghalib Taher

Saudi Aramco DeskTop Standards Table of Contents 1 2 3 4 5

Scope............................................................. 2 Conflicts and Deviations................................. 2 Applicable Documents.................................... 2 Definitions and Acronyms............................... 6 Instructions and Approval Responsibility........ 7

Table 1 – Welding Procedure Technical Approval Responsibility………..……….. 9 Appendix I – Welding Master Set Preparation and Approval..................... 12 Appendix II – Welding Package Review and Approval Process for Company Projects................................ 13 Appendix III – Welding Package Review and Approval Process for Repair/Maintenance/Alterations............ 14

Previous Issue: 31 May 2003

Next Planned Update: 20 October 2014 Page 1 of 14

Primary contact: Al-Sabti Tareq Ibrahim on 966-3-8760236 Copyright©Saudi Aramco 2009. All rights reserved.

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

1

2

SAEP-352 Welding Procedures Review and Approval

Scope 1.1

This procedure specifies the responsibilities for welding procedure review and approval. This procedure applies to pressure vessels, process equipment or components, piping, pipelines, and structures fabricated to a variety of standards, such as but not limited to ASME SEC I, IV, VIII, B31.1, B31.3, B31.4, B31.8 and API STD 560, 620 and 650, and AWS D1.1.

1.2

Additional requirements may be contained in Scopes of Work, Drawings, or other Instructions or Specifications pertaining to specific items of work.

Conflicts and Deviations Conflicts between this Engineering Procedure and any other Saudi Aramco Standard shall be resolved by the Consulting Services Department in writing.

3

Applicable Documents Unless stated otherwise, all Standards, Specifications, and Codes referenced in this procedure shall be of the latest issue (including revisions, addenda, and supplements) and are considered a part of this procedure. 3.1

Saudi Aramco References Saudi Aramco Engineering Procedure SAEP-310

Piping and Pipeline Repair

Saudi Aramco Engineering Standards SAES-D-008

Repairs, Alterations, and Rerating of Pressured Equipment

SAES-D-108

Storage Tank Integrity

SAES-D-116

Underground Storage Tank System

SAES-K-001

Heating, Ventilating and Air Conditioning (HVAC)

SAES-L-350

Construction Requirements for Metallic Plant Piping

SAES-L-450

Construction Requirements for Cross-Country Pipelines

SAES-L-460

Pipelines Crossing Under Roads and Railroads

SAES-L-850

Design of Submarine Pipelines and Risers Page 2 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

SAES-M-001

Structural Design Criteria for Non-Building Structures

SAES-M-005

Design and Construction of Fixed Offshore Platforms

SAES-M-009

Design Criteria for Blast Resistant Buildings

SAES-T-744

Design Criteria/Installation of Communication Towers

SAES-W-010

Welding Requirements for Pressure Vessels

SAES-W-011

Welding Requirements for On-Plot Piping

SAES-W-012

Welding Requirements for Pipelines

SAES-W-013

Welding Requirements for Offshore Structures

SAES-W-014

Weld Overlays and Welding of Clad Materials

SAES-W-015

Strip Lining Application

SAES-W-016

Welding of Special Corrosion-Resistant Materials

SAES-W-017

Welding Requirements for API Tanks

Saudi Aramco Materials System Specifications 01-SAMSS-010

Fabricated Carbon Steel Piping

01-SAMSS-017

Auxiliary Piping for Mechanical Equipment

01-SAMSS-035

API Line Pipe

01-SAMSS-038

Small Direct Charge Purchases of Pipe

01-SAMSS-046

Stainless Steel Pipe

01-SAMSS-333

High Frequency Welded Line Pipe

02-SAMSS-001

Piping Components for Low Temperature Services

02-SAMSS-005

Butt Welding Pipe Fittings

02-SAMSS-006

Hot Tap and Stopple Fittings

02-SAMSS-008

Insulating Joints/Spools for Cathodic Protection

02-SAMSS-009

Design and Fabrication of Scraper Traps

02-SAMSS-010

Flanged Insulating Joints/Spools for Cathodic Protection

02-SAMSS-011

Forged Steel Weld Neck Flanges for Low, Intermediate and High Temperature Service

04-SAMSS-035

General Requirements for Valves Page 3 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

04-SAMSS-053

Steel Lubricated Plug Valves - Flanged and Welding End

12-SAMSS-007

Fabrication of Structural and Miscellaneous Steel

12-SAMSS-014

Pre-Engineered Metal Building

27-SAMSS-001

Packaged Water Cooled Centrifugal Chillers for Utility Services

27-SAMSS-002

Direct Expansion Air Conditioning Systems for Offshore Facilities

27-SAMSS-003

Manufacture of Non-Industrial Cooling Towers

30-SAMSS-001

Diesel Engines

31-SAMSS-001

Centrifugal Compressor

31-SAMSS-002

Packaged Reciprocating Plant and Instrument Air Compressors

31-SAMSS-003

Reciprocating Compressors for Process Air or Gas Service

31-SAMSS-004

Centrifugal Pumps

31-SAMSS-005

Centrifugal Fluorocarbon Refrigeration Units for Industrial/Process Services

31-SAMSS-006

Packaged, Integrally Geared Centrifugal Air Compressors

31-SAMSS-009

Positive Displacement Pumps - Controlled Volume

31-SAMSS-010

Submersible Pumps and Motors for Water Well and Offshore Service

31-SAMSS-012

Shaft Sealing Systems for Centrifugal and Rotary Pumps

32-SAMSS-001

Special Purpose Steam Turbines for Generator Sets

32-SAMSS-004

Manufacture of Pressure Vessels

32-SAMSS-005

Manufacture of Atmospheric Tanks

32-SAMSS-006

Manufacture of Low Pressure Tanks

32-SAMSS-007

Manufacture of Shell and Tube Heat Exchangers

32-SAMSS-008

Inlet Air Filtration Systems for Combustion Gas Turbines

32-SAMSS-009

General Purpose Steam Turbines

32-SAMSS-010

Special Purpose Steam Turbines Page 4 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

3.2

SAEP-352 Welding Procedures Review and Approval

32-SAMSS-011

Manufacture of Air-cooled Heat Exchangers

32-SAMSS-013

Lubrication, Shaft Sealing and Control Oil Systems

32-SAMSS-016

Inlet Air Filtration Systems for Centrifugal Air Compressors

32-SAMSS-017

Side-Entry Mixers

32-SAMSS-019

Manufacture of Plate and Frame Heat Exchangers

32-SAMSS-020

Manufacture of Trays and Packing

32-SAMSS-021

Manufacture of Industrial Boilers

32-SAMSS-022

Manufacture of Components for Flare Systems

32-SAMSS-027

Manufacture of Electric Heat Exchangers

32-SAMSS-028

Manufacture of Double Pipe Heat Exchangers

32-SAMSS-029

Manufacture of Fire Heaters

32-SAMSS-030

Manufacture of Small Tanks

32-SAMSS-031

Manufacture of Clad Vessels and Exchangers

32-SAMSS-033

Reverse Osmosis Systems

32-SAMSS-035

Manufacture of Heat Recovery Steam Generator

32-SAMSS-036

Manufacture of Small Pressure Vessels

32-SAMSS-100

Combustion Gas Turbines

34-SAMSS-611

Safety Relief Valves Conventional and Balanced Types

34-SAMSS-612

Safety Relief Valves Pilot Operated Types

34-SAMSS-711

Control Valves

45-SAMSS-005

Valves and Wellhead Equipment Requirements per API SPEC 6A

Industry Codes and Standards American Petroleum Institute API STD 560

Fired Heaters for General Refinery Services

API STD 620

Design and Construction of Large, Welded, LowPressure Storage Tanks

API STD 650

Welded Steel Tanks for Oil Storage

API STD 1104

Welding of Pipelines and Related Facilities Page 5 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

American Society of Mechanical Engineers ASME B31.1

Power Piping

ASME B31.3

Process Piping

ASME B31.4

Pipeline Transportation Systems for Liquid Hydrocarbons and other Liquids

ASME B31.8

Gas Transmission and Distribution Piping Systems

ASME SEC I

Rules for Construction of Power Boilers

ASME SEC IV

Rules for Construction of Heating Boilers

ASME SEC VIII

Rules for Construction of Pressure Vessels

ASME SEC IX

Welding and Brazing Qualifications

American Welding Society AWS D1.1 4

Structural Welding Code-Steel

Definitions and Acronyms Application Approval: Approval acquired from Inspection Department to apply technically approved welding procedure. ID generally verifies that the intended application of previously approved welding procedures is within the welding procedure's variables (e.g., diameter, thickness, materials, service, etc.) approval range. CSD: Consulting Services Department Welding Specialist/Engineer or CSD's Appointed Representative (e.g., Aramco Services Company Welding Specialist/Engineer). ID: Inspection Department Vendor, Operations or Project Inspector or Inspection Representative. PMC: A Program Management Contractor. SAPMT: Saudi Aramco Project Management Team or someone acting on their behalf such as PMC. PMT Designated Welding Representative (PMT DWR): A welding engineer / inspector assigned to and contracted by SAPMT who has the approval authority for project(s) associated welding procedures. PQR: Performance Qualification Record

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Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

Technical Approval: Approval of welding procedures acquired from CSD or PMT Designated Welding Representative. This approval indicates that the welding procedure was qualified to Saudi Aramco and/or industry standards or codes and it is acceptable for the intended application. Every page of the welding procedure specifications should include the reviewer signature and/or approval stamp. Weld and Line Designation Table: A table that lists the applicable welding procedures, approval conditions (e.g., low temperature, sour service, etc.), welding process, and any general welding information pertinent to those applicable welding procedures. Weld Map: A schematic one line diagram of pressure containing equipment (e.g., pressure vessel or tank). The map should indicate where each approved welding procedure will be applied. Welding Master Set (WMS): It is compilation of welding procedures prepared by vendor/fabricator. It is a standardized set of welding procedures that is used with a generic Weld and Line Designation Table and/or generic Weld Map, which include the material and service application information. WP: Welding Package. WPS: Welding Procedure Specifications. 5

Instructions and Approval Responsibility 5.1

CSD shall be the technical approval authority for the followings: a)

All Saudi Aramco Project welding procedures for applications listed in Table 1 from either in-kingdom or out of kingdom fabricators and construction contractors. Appendix II is a flowchart that indicates the review process for Saudi Aramco projects.

b)

"Welding Master Set" submissions for the applications listed in Table 1 from in-Kingdom and Gulf Cooperation Council fabricators. See Appendix I for details on welding master set's preparation and approval. Appendix II is a flowchart that indicates the review process for Saudi Aramco projects. The Welding Master Set (WMS) is submitted to PMT for CSD's one-time technical approval. When WMS is approved by CSD then it can be often used in various Saudi Aramco projects if ID approves the application.

c)

Maintenance/repair/alteration applications. Appendix III is a flow chart that indicates the review process.

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Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

5.2

SAEP-352 Welding Procedures Review and Approval

A PMT designated welding representative assigned to and contracted by SAPMT may be the approval authority for project(s) associated welding procedures. He must review the welding procedures for all applications listed in Table 1, and as requested by PMT CSD will interview and approve the PMT designated welding representative. Written examinations may be requested and prepared by CSD, this will depend on the project scope. With coordination with SAPMT, CSD will periodically audit some of his welding procedures review.

5.3

For applications not listed or not requiring CSD/PMT DWR review in Table 1 the qualified welding procedures shall be available at the fabrication/welding site (e.g., vendor shop, field fabrication, etc.) for review by the Inspector, if requested. The procedures shall be included in the project or shop documentation record books.

5.4

If the welding procedure is approved to the latest edition of the welding standards, then the fabricator/construction contractor is permitted to use the welding procedure without CSD/PMT DWR review. The assigned inspector must verify that the qualification range (e.g., diameter, thickness, material grade, etc.) of the welding procedure is still applicable to the new work.

5.5

If the welding procedure is approved to a previous edition of the welding standards, then fabricator/construction contractor is permitted to use it, if it was not affected by the revisions. The fabricator/construction contractor must write a formal letter to PMT or Engineering/Maintenance Div. indicating that the subject welding procedure still complies with the latest edition of Saudi Aramco Welding Standards. The assigned inspector must verify that the qualification range (e.g., diameter, thickness, material grade, etc.) of the welding procedure is still applicable to the new work.

5.6

If the previously approved welding procedure is invalidated by a change in the welding standard, a revised welding procedure, along with the old approved copy, must be submitted for CSD/PMT DWR review. The assigned inspector must verify that the qualification range (e.g., diameter, thickness, material grade, etc.) of the welding procedure is still applicable to the new work.

20 October 2009

Revision Summary Major revision.

Page 8 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

Table 1 – Welding Procedure Technical Approval Responsibility Component Boiler

Compressor

Fired Heater

Fitting Piping Pipeline

Flare System

Application

Specification

Welding Standard

Review/Approval Responsibility CSD/PMT DWR

Not Required (1)

Manufacture of Boilers Repairs, Alterations, and Re-rating Axial , Centrifugal, & Expander Compressors Packaged Reciprocating Plant & Instrument Air Compressor Reciprocating Compressor Packaged, Integrally Geared Centrifugal Air Compressor Inlet Air Filtration Systems for Centrifugal Air Compressor Coils Only Repairs, Alterations, and Re-rating

32-SAMSS-021 SAES-D-008

SAES-W-010 SAES-W-010

31-SAMSS-001

NA

X

31-SAMSS-002

NA

X

31-SAMSS-003

NA

X

31-SAMSS-006

NA

X

32-SAMSS-016

NA

X

32-SAMSS-029 SAES-D-008

X X

Fabricated Carbon Steel Piping

01-SAMSS-010

High Frequency Welded Pipe

01-SAMSS-333

Scraper Traps

02-SAMSS-009

Construction of Plant Piping

SAES-L-350

Construction of Pipelines Pipeline Crossings Under Roads and Railroads Submarine Pipelines and Risers

SAES-L-450

SAES-W-011 SAES-W-010 SAES-W-011 SAES-W-012 01-SAMSS-333 SAES-W-011 SAES-W-012 SAES-W-011 SAES-W-016 SAES-W-012

SAES-L-460

SAES-W-012

X

SAES-L-850 SAEP-310

SAES-W-012 SAES-W-011 SAES-W-012 SAES-W-011 NA NA

X

Piping and Pipeline Repair Spectacle Blinds Auxiliary Piping Mounted Skids Procurement & Manufacturing of Line Pipe (large quantity) Procurement & Manufacturing of Line Pipe (small quantity) Manufacturing of Stainless Steel Pipe Manufacturing of Piping Components for Low Temperature Service Manufacturing of Butt Welding Pipe Fittings Manufacturing of Hot Tap and Stopple Fittings Manufacturing of Insulating Joints/Spools for Cathodic Protection Manufacturing of Flanged Insulating Joints/Spools for Cathodic Protection Manufacture of Components for Flare Systems

01-SAMSS-017

X X

X X X X X

X X X X

01-SAMSS-035

NA

X

01-SAMSS-038

NA

X

01-SAMSS-046

NA

X

02-SAMSS-001

NA

X

02-SAMSS-005

NA

X

02-SAMSS-006

NA

X

02-SAMSS-008

NA

X

02-SAMSS-010

NA

X

32-SAMSS-022

NA

X

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Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

Table 1 – Welding Procedure Technical Approval Responsibility (cont'd) Component

Heat Exchanger

Heat Recovery Steam Generator

Miscellaneous

Pump

Structural steel

Tank

Application

Specification

Shell and Tube Heat Exchanger Air-Cooled Heat Exchanger Plate and Frame Heat Exchanger Electric Heat Exchanger Double Pipe Heat Exchanger Clad Heat Exchanger

32-SAMSS-007 32-SAMSS-011 32-SAMSS-019 32-SAMSS-027 32-SAMSS-028 32-SAMSS-031

Repairs, Alterations, and Re-rating

SAES-D-008

Manufacture of Heat Recovery Steam Generators Brazing Centrifugal Fluorocarbon Refrigeration Units for Industrial/Process Services Diesel Engines Direct Expansion Air Conditioning Systems for Offshore Facilities Heating, Ventilating and Air Conditioning (HVAC) Lubrication, Shaft Sealing and Control Oil Systems Manufacture of Non-Industrial Cooling Towers Packaged Water Cooled Centrifugal Chillers for Utility Services Reverse Osmosis System Side-Entry Mixers Centrifugal Pump Positive Displacement Pump Submersible Pump Shaft Sealing System Construction of Fixed Offshore Platforms Fabrication of Structural and Miscellaneous Steel Pre-Engineered Metal Buildings Non-Building Structures Blast Resistant Buildings Communication Towers Atmospheric Tank Low Pressure Tank Small Tank Repair, Alteration, and Reconstruction Underground Storage Tank

Welding Standard

Review/Approval Responsibility CSD/PMT DWR

Not Required (1)

SAES-W-010 SAES-W-010 SAES-W-010 SAES-W-010 SAES-W-010 SAES-W-010 SAES-W-010 SAES-W-014 SAES-W-015

X X X X X X

32-SAMSS-035

SAES-W-010

X

NA

NA

X

31-SAMSS-005

NA

X

30-SAMSS-001

NA

X

27-SAMSS-002

NA

X

SAES-K-001

NA

X

32-SAMSS-013

NA

X

27-SAMSS-003

NA

X

27-SAMSS-001

NA

X

32-SAMSS-033 32-SAMSS-017 31-SAMSS-004 31-SAMSS-009 31-SAMSS-010 31-SAMSS-012

NA NA NA NA NA NA

X X X X X X

SAES-M-005

SAES-W-013

12-SAMSS-007

NA

X

12-SAMSS-014 SAES-M-001 SAES-M-009 SAES-T-744 32-SAMSS-005 32-SAMSS-006 32-SAMSS-030

NA NA NA NA SAES-W-017 SAES-W-017 SAES-W-017

X X X X X X X

SAES-D-108

SAES-W-017

X

SAES-D-116

SAES-W-017

X

X

X

Page 10 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

Table 1 – Welding Procedure Technical Approval Responsibility (cont'd) Component

Turbine

Valve

Application

Specification

Welding Standard

Review/Approval Responsibility CSD/PMT DWR

Not Required (1)

Special Purpose Steam Turbine Inlet Air Filtration System for CGT General Purpose Steam Turbine Special Purpose Steam Turbine Combustion Gas Turbine General Requirement Steel Lubricated Plug Valve Safety Relief Valve Conventional and Balanced Types Safety Relief Valve Pilot Operated Types Control Valve Valve and Wellhead Equipment per API SPEC 6A Manufacture of Pressure Vessel Manufacture of Small Pressure Vessel Manufacture of Clad Vessel

32-SAMSS-001 32-SAMSS-008 32-SAMSS-009 32-SAMSS-010 32-SAMSS-100 04-SAMSS-035 04-SAMSS-053

NA NA NA NA NA NA NA

X X X X X X X

34-SAMSS-611

NA

X

34-SAMSS-612

NA

X

34-SAMSS-711

NA

X

45-SAMSS-005

NA

X

32-SAMSS-004 32-SAMSS-036 32-SAMSS-031

Repairs, Alterations, and Re-rating

SAES-D-008

Manufacture of Trays and Packing

32-SAMSS-020

SAES-W-010 SAES-W-010 SAES-W-010 SAES-W-010 SAES-W-014 SAES-W-015 NA

Vessel

X X X X X

Notes: 1.

Formal approval is not required. However, all WPS/PQR/Weld Map documents must be available for the inspector review or verification upon his request.

2.

In special cases the PMT or the Engineering/Maintenance Division may request CSD procedure review for any application. This may be done even though procedure review is not required according to Table 1 or is not listed in Table 1.

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Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

Appendix I – Welding Master Set Preparation and Approval 1.

Each fabricator/vendor awarded a contract or purchase order will compile all CSD revised previously approved welding procedures and any welding procedures, intended to be used in Saudi Aramco projects.

2.

Revised previously approved welding procedures must be submitted in new forms, unsigned, and the approved copy is attached to compare welding parameters between the two copies.

3.

The master set must include typical "Weld Maps", "Weld Description" sheet, "Request for Welding Procedure Approval" form and any supporting document required to be submitted by Saudi Aramco Welding Standard (SAES-W-010, SAES-W-011, etc.). It is recommended that a distinct identification system is used for the WPS and the revision number (e.g., WPS # is WMS P1-P8-1 and the revision # is M0, here both WMS and M indicate that the welding procedure is part of welding master set).

4.

The PQRs must be either the originals, certified/stamped copies, or colored copies of the originals. The qualification tests must be performed by independent testing agency approved by Saudi Aramco (Contact CSD Welding Group to get the updated list of the approved independent test agencies).

5.

The time required to review each master set will depend on the number of the submitted welding procedures and the pertinent technical welding requirements (e.g., PWHT, hardness test, impact toughness test, etc.). The table below lists the estimated time to review welding master sets. Estimated Time to Review Welding Master Sets Number of MS Welding Procedure

Time to Complete Review

Up to 50

6 Weeks

>50 to 100

10 Weeks

> 100

16 Weeks

6.

After the initial technical approval, the welding procedures can be applied in various company projects if ID approves the application.

7.

The fabricator/ Construction Contractor must continuously review the approved welding procedures to ensure their conformance with the latest applicable Saudi Aramco Welding Standards and Industry Codes.

Page 12 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

Appendix II – Welding Package Review and Approval Process for Company Projects Fabricator/Construction Contractor prepares WP complying Saudi Aramco Welding Engineering Standards

PMT screens WP:  

Fabricator/Construction Contractor receive and review CSD/PMT DWR comments and correct WP deficiencies

WP rejected

Is it IK/GCC fabricator’s WMS? OR Does it need CSD/PMT DWR formal approval as per Table 1?

No

Yes CSD welding specialist/engineer or PMT DWR reviews WP

PMT receives WP review Results WP accepted

WP rejected

ID reviews and approves the application of WP WP accepted PMT formally accepts the WP and sends the approval to Fabricator/Construction Contractor

Fabricator/Construction Contractor can use the welding procedure

Page 13 of 14

Document Responsibility: Welding Standards Committee Issue Date: 20 October 2009 Next Planned Update: 20 October 2014

SAEP-352 Welding Procedures Review and Approval

Appendix III – Welding Package Review and Approval Process for Repair/Maintenance/Alterations Fabricator/Construction Contractor prepares repair/maintenance/alterations WP complying with Saudi Aramco Welding Engineering Standards and submits it to Proponent

Engineering/Maintenance Div. receives the WP and screens if it need CSD formal approval as per Table 1?

No

Yes Fabricator/Construction Contractor receive and review CSD comments and correct WP deficiencies

WP rejected

CSD welding specialist/engineer reviews WP

Engineering/Maintenance Div. receives WP review Results WP accepted

WP rejected

Proponent Inspection Unit reviews and approves the application of WP WP accepted Engineering/Maintenance Div. formally accepts the WP and sends the approval to Fabricator/Construction Contractor

Fabricator/Construction Contractor can use the welding procedure

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