Welders' requirements

1. Any person welding on new or existing boilers shall register with the chief boiler inspector sufficient data to show a satisfactory performance qualification test for American society of mechanical engineers position "6G" or equivalent. This data must be documented on a current American society of mechanical engineers section IX "QW-484" form. Tests of welded specimens must be made by a certified testing laboratory. 2. In lieu of the above requirements, a firm in possession of a valid American society of mechanical engineers certificate of authorization for new boiler construction or a valid national board "R" certificate of authorization for repairing or altering existing boilers may allow welder's qualifications to be audited by the chief boiler inspector at the chief boiler inspector's discretion. The welders must be qualified according to the requirements of American Society of Mechanical Engineers Boiler and Pressure Vessel Code, section IX.