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GIS 43-331 - API 1104 Pipeline Welding.pdf

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Guidance on Industry Standard for API 1104 Pipeline Welding GIS 43-331 BP GROUP ENGINEERING TECHNICAL PRACTICES Document No. GIS 43-331 Applicability Group Date 21 April 2006 21 April 2006 GIS 43-331 Guidance on Industry Standard for API 1104 Pipeline Welding Page 2 of 56 Foreword This is the first issue of Engineering Technical Practice (ETP) BP GIS 43-331. This Guidance on Industry Standard (GIS) is based on parts of heritage documents
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    Guidance on Industry Standard for API 1104 Pipeline Welding GIS 43-331 BP GROUP ENGINEERING TECHNICAL PRACTICES Document No. GIS 43-331 Applicability Group Date 21 April 2006  21 April 2006 GIS 43-331 Guidance on Industry Standard for API 1104 Pipeline Welding   Page 2 of 56 Foreword This is the first issue of Engineering Technical Practice (ETP) BP GIS 43-331. This Guidance on Industry Standard (GIS) is based on parts of heritage documents from the merged BP companies as follows: British Petroleum GS 118-9 Welding of Transmission Pipelines (Supplementary to API 1104). GS 118-10 Welding of Transmission Pipelines (Supplementary to BS 4515). AMOCO A PN-OFS-WLD-C Piping—Offshore—Welding Pipelines—Construction. Copyright ©  2006, BP Group. All rights reserved. The information contained in this document is subject to the terms and conditions of the agreement or contract under which the document was supplied to the recipient’s organization. None of the information contained in this document shall be disclosed outside the recipient’s own organization without the prior written permission of the Director of Engineering, BP Group, unless the terms of such agreement or contract expressly allow.  21 April 2006 GIS 43-331 Guidance on Industry Standard for API 1104 Pipeline Welding   Page 3 of 56 Table of Contents Page Foreword........................................................................................................................................2   Introduction.....................................................................................................................................6   1   General..................................................................................................................................7   1.1   Scope.........................................................................................................................7   1.2   Welding process restrictions.......................................................................................7   1.3   HSSE for pipeline welding operations.........................................................................7   1.4   Pre-production consultation........................................................................................8   1.5   General duties of the contractor..................................................................................8   1.6   Quality assurance.......................................................................................................8   1.7   Records......................................................................................................................8   1.8   Contractor’s personnel................................................................................................9   1.9    Abbreviations and acronyms.....................................................................................10   2   Referenced publications......................................................................................................12   3   Definitions of terms..............................................................................................................14   3.2   Definitions.................................................................................................................14   4   Specifications.......................................................................................................................15   4.1   Equipment.................................................................................................................15   4.2   Materials...................................................................................................................15   4.3   Minimum design temperature (MDT).........................................................................17   5   Qualification of welding procedures for welds containing filler-metal additives.....................17   5.1   Procedure qualification.............................................................................................17   5.2   Record......................................................................................................................18   5.3   Procedure specification.............................................................................................19   5.4   Essential variables....................................................................................................22   5.5   Welding of test joint—butt welds...............................................................................25   5.6   Testing of welded joints—butt welds.........................................................................26   5.7   Welding of test joints—fillet welds.............................................................................33   5.8   Testing of welded joints—fillet welds.........................................................................33   6   Qualification of welders........................................................................................................34   6.1   General.....................................................................................................................34   6.2   Single qualification....................................................................................................35   6.3   Multiple qualification..................................................................................................35   6.4   Visual examination....................................................................................................35   6.6   Radiography—butt welds only...................................................................................35   7   Design and preparation of a joint for production welding......................................................36   7.1   General.....................................................................................................................36   7.2    Alignment..................................................................................................................36   7.3   Use of line-up clamp for butt welds...........................................................................37   7.4   Bevel.........................................................................................................................38   7.5   Weather conditions...................................................................................................38    21 April 2006 GIS 43-331 Guidance on Industry Standard for API 1104 Pipeline Welding   Page 4 of 56 7.6   Clearance.................................................................................................................38   7.7   Cleaning between beads...........................................................................................39   7.10   Identification of welds................................................................................................39   7.11   Pre-and post-heat treatment.....................................................................................39   7.12   Weld interruption.......................................................................................................40   7.13   Branches..................................................................................................................40   7.14   Fillet weld attachments..............................................................................................41   8   Inspection and testing of production welds...........................................................................41   8.1   Rights of inspection...................................................................................................41   8.2   Methods of inspection...............................................................................................42   8.3   Qualification of inspection personnel.........................................................................42   8.4   Certification of nondestructive testing personnel.......................................................42   9    Acceptance standards for non-destructive testing................................................................43   9.1   General.....................................................................................................................43   9.3   Radiographic testing.................................................................................................43   9.7   Visual acceptance standards for undercutting...........................................................44   9.8   Suspect welds...........................................................................................................44   10   Repair and removal of defects.............................................................................................45   10.1    Authorisation for repair..............................................................................................45   10.2   Repair procedure......................................................................................................46   10.6    Arc burns..................................................................................................................47   11   Procedures for nondestructive testing..................................................................................47   11.1   Radiographic test methods.......................................................................................47   11.2   Magnetic particle test method...................................................................................50   11.4   Ultrasonic test methods.............................................................................................50   12   Mechanised welding with filler metal additions.....................................................................51   12.2   Procedure qualification.............................................................................................51   12.3   Record......................................................................................................................51   12.4   Procedure specification.............................................................................................52   12.5   Essential variables....................................................................................................52   12.6   Qualification of welding equipment and operators.....................................................52   13    Automatic welding without filler-metal additions...................................................................52    Appendix A—Alternative acceptance standards for girth welds.....................................................52    Appendix B – In-service welding...................................................................................................52   B.1   General.....................................................................................................................52    Appendix C – Additional requirements for pipelines subject to high strain levels...........................53   C.1   Introduction...............................................................................................................53   C.2   General.....................................................................................................................53   C.3   Weld procedure qualification testing..........................................................................53   C.4   Production welding....................................................................................................54    Appendix D—CTOD testing..........................................................................................................55    Appendix E—Pin brazing and aluminothermic welding of anode leads.........................................55   E.1   Joining technique......................................................................................................55  
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