BS 4515-1:2009 specifies requirements for the welding of carbon, carbon manganese and low alloy steel pipelines with specified minimum yield strengths not exceeding 555 N/mm2 (grade L555 as specified in ISO 3183:2007 and BS EN 10208-2:1997 and designed in accordance with PD 8010-1 and PD 8010-2.
BS 4515-1 applies to pipes of outside diameter 21.0 mm and larger having a thickness of 3.0 mm or greater and is applicable to transmission pipelines for gases, liquids or slurries, both on land and offshore.
Information on hyperbaric welding and on brazing and aluminothermic welding of anode bonding leads, and recommendations for the welding of corrosion resistant alloy clad and lined pipelines, are provided.
This is a full revision of the standard, and introduces the following principal changes:
- removal of references to BS EN 288-9, which has been withdrawn. Where appropriate, requirements from BS EN 288-9 have been incorporated in this standard
- revision of Clause 8 on testing, qualification and approval of welding procedures
- revision of Annex A on hyperbaric welding.
BS 4515-1 specifies:
- Normative references
- Terms and definitions, and abbreviations
- Information and requirements to be approved and documented
- Equipment
- Welding process
- Welding consumables
- Testing, qualification and approval of welding procedures
- Testing, qualification and approval of welders
- Production welding
- Inspection and testing of welds
- Acceptance and rectification of welds.
BS 4515-1:2009 supersedes BS 4515-1:2004, which is withdrawn.
