焊接工艺评定是施焊锅炉受压元件前必须进行的一项重要工作,各国根据自己的国情,在锅炉规范(标准)中对焊接工艺评定都做了相应的规定,基本要求大致相同,但也有些差异。为了学习和执行新修订的《蒸气锅炉安全技术监察规程》及附录Ⅰ焊接工艺评定(以下简称我国蒸规),并了解国外先进工业国家 Welding procedure qualification is an important work that must be carried out before the pressurized components of the welding boiler. All countries have made corresponding provisions in the boiler code (standard) on the assessment of welding procedure according to their own national conditions. The basic requirements are basically the same, but also Some differences. In order to learn and implement the revised “Steam Boiler Safety Technology Supervision Regulations” and Appendix Ⅰ welding process assessment (hereinafter referred to as China’s steam regulation), and to understand foreign advanced industrial countries