What standards are used for welder examinations and weld evaluations of zirconium materials?

The standards commonly followed for welder examinations and welding procedure qualification for zirconium materials are: 1. In China, GB/T 19869 \"Welding Procedures for Zirconium and Zirconium Alloys\" is typically applied； 2. For welding procedure qualification, relevant standards such as GB/T 19869, JB/T 4734 \"Non-destructive testing of pressure equipment\", or GB/T 150 \"Pressure vessels\" are usually referred to; the ASME Volume IX international codes can also be used for welding procedure qualification ； 3. The skill assessments and qualification evaluations for welders are generally carried out in accordance with the GB/T 19869 standard and the GB/T welder qualification series (such as GB/T 28735 or GB/T 28734, depending on the specific industry). In practical applications, it should also be implemented in accordance with the specific requirements of the project contract, drawings, or industry standards. .