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BS EN 12732:2021 Gas infrastructure. Welding steel pipework. Functional requirements, 2021
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General requirements [Go to Page]
- 4.1 General
- 4.2 Quality system requirements
- 4.3 Welding contractors
- 4.4 Welding procedure requirements [Go to Page]
- 4.4.1 General
- 4.4.2 Welding consumables
- 4.4.3 Impact testing requirements
- 4.5 Welders
- 4.6 Welding supervisory and coordination personnel
- 4.7 Non destructive testing (NDT)
- 4.8 Destructive testing (DT)
- 5 Production welding [Go to Page]
- 5.1 General
- 5.2 Working area
- 5.3 Layout of weld joints
- 5.4 Types of weld joints [Go to Page]
- 5.4.1 General
- 5.4.2 Weld fit-up
- 5.4.3 Different wall thickness
- 5.4.4 Laminations
- 5.4.5 Interaction of longitudinal or spiral seams at a girth weld
- 5.5 Joint preparation [Go to Page]
- 5.5.1 Joint end preparation
- 5.5.2 Alignment of the joints
- 5.6 Preheating
- 5.7 Tacking
- 5.8 Welding
- 5.9 Actions after welding
- 5.10 Repair of weld defects
- 5.11 Destructive testing of production welds for DP over 16 bar
- 6 Attachment-, and in-service welding [Go to Page]
- 6.1 General
- 6.2 Attachment of structural parts
- 6.3 Attachment of cathodic protection connections
- 6.4 Hot-tapping and other welding work on in-service pipelines
- 7 Inspection of the weld joint [Go to Page]
- 7.1 General
- 7.2 Scope of inspection
- 7.3 Non-destructive testing, assessment levels and acceptance criteria
- 7.4 Time of inspection
- 7.5 Tie in welds for DP over 16 bar
- 7.6 Recording of test results
- 7.7 Requirements for records and documentation
- 8 Metering, regulating and compressor stations
- Annex A (normative)Qualification of pipeline welders and operators of mechanized welding equipment for steel pipelines [Go to Page]
- A.1 General
- A.2 Additional requirements to EN ISO 96061:2017 and EN ISO 14732:2013 [Go to Page]
- A.2.1 Welded length
- A.2.2 Welding conditions
- A.2.3 Confirmation of the validity
- A.2.4 Revalidation of welder qualification
- A.2.5 Revocation of Qualification
- A.2.6 Welders Qualification Test certificate
- A.2.7 Designation
- A.3 Additional requirements for operators of mechanized welding equipment
- Annex B (informative)Testing on lamination defects
- Annex C (informative)Time-of-flight diffraction technique (TOFD) [Go to Page]
- C.1 General
- C.2 Additional and substitutional requirements to EN ISO 10863:2011 [Go to Page]
- C.2.1 Addition to the whole document EN ISO 10863:2011
- C.2.2 Addition to EN ISO 10863:2011, Clause 3 “Terms and definitions”
- C.2.3 Addition to EN ISO 10863:2011, Clause 5, “Examination Levels”
- C.2.4 Addition to EN ISO 10863:2011, 7.2.2, “Ultrasonic probes”
- C.2.5 Substitution of EN ISO 10863:2011, Clause 11, 3rd paragraph “Weld testing”
- C.2.6 Substitution of EN ISO 10863:2011, 12.5.2 “Sizing”
- Annex D (normative)Critical aspects for hot-tap welding or welding on in-service pipelines [Go to Page]
- D.1 General
- D.2 procedural requirements
- D.3 Supervision
- D.4 Safety precautions
- D.5 Welding consumables
- D.6 Welding procedure specification (WPS)
- D.7 Welding procedure qualification for in-service welding
- D.8 Qualification of the welder
- D.9 Weld preparation long seam
- D.10 Weld preparation circular seam
- D.11 Repairs
- D.12 Non-destructive testing
- D.13 Pressure test
- D.14 Documentation
- Annex E (normative)AUT examination of joints [Go to Page]
- E.1 Extent of this annex
- E.2 General Requirements [Go to Page]
- E.2.1 General
- E.2.2 AUT Quality assurance
- E.2.3 Content of the procedure
- E.2.4 Ultrasonic system equipment and components [Go to Page]
- E.2.4.1 General
- E.2.4.2 Recording system
- E.2.4.3 Acoustic coupling
- E.2.4.4 Set up for scan of repairs
- E.2.5 Reference blocks
- E.2.6 Recorder set-up
- E.2.7 Circumferential scanning velocity
- E.2.8 Software
- E.2.9 Reference line, band position and coating cut-back
- E.2.10 Operators
- E.2.11 Calibration (Sensitivity Setting) [Go to Page]
- E.2.11.1 Initial static calibration
- E.2.11.2 Gate settings
- E.2.11.3 Recording threshold
- E.2.11.4 Dynamic calibration
- E.2.11.5 Recording of set-up data
- E.3 Field Inspection
- E.4 Adjustments of the AUT system
- E.5 Acceptance criteria tier 1
- E.6 Acceptance criteria tier 2
- Annex F (informative)Manual ultrasonic testing of weld joints for wall thickness between approximately 6 mm and 8 mm [Go to Page]
- F.1 General
- F.2 Setting of range
- F.3 Sensitivity adjustment when using the Distance Gain Size method
- Annex G (normative)EPRG acceptance criteria [Go to Page]
- G.1 General
- G.2 EPRG defect acceptance levels and defect limits
- G.3 Requirements
- Annex H (normative)Visual acceptance criteria according to EN ISO 5817:2014
- Annex I (normative)RT acceptance criteria according to EN ISO 10675 and EN ISO 5817:2014
- Annex J (normative)Alternative method and acceptance criteria for UT inspection [Go to Page]
- J.1 Distance Gain Size method
- J.2 Comparative Element method
- J.3 General
- Annex K (informative)Brazing and stud welding of connections for cathodic protection systems [Go to Page]
- K.1 Joining techniques
- K.2 Procedure qualification
- K.3 Operation qualification
- K.4 Production joints
- Annex L (informative)Significant technical changes between this European Standard and the previous edition [Go to Page]
