scope:

Specifies essential requirements, ranges of approval, test conditions, acceptance requirements and certification for the approval testing of welder performance for the welding of nickel. This standard applies to the approval testing of welders for the fusion welding of nickel. It is intended to provide the basis for the mutual recognition by examining bodies for approval relating to welders' competence in the various fields of application. Test will be carried out in accordance with this standard unless more severe tests are specified by the relevant application standard when these are applied. Is applicable when the welder's approval testing is required by the purchaser, by inspection authorities or by other organizations.