scope:

This NORSOK standard covers additional and optional technical requirements to ASME B31.3 for welding and weld inspection of piping systems, selected and specified in accordance with to NORSOK L-001, and applies to all piping fabrication including prefabrication, module assembly, package or skid mounted units, site and field installation.

NOTE An option to use ISO 15614 (all parts) for welding procedure qualifications, EN 287-1, and ISO 9606-3 to ISO 9606-5 for welder qualifications, and EN 473 for NDT inspectors, is given as an alternative to ASME Section V and IX.