核设备锻件超声检验RCC-M 2007与FM 1061对比和分析

Comparison and Analysis of Ultrasonic Testing of Steel Forgings for Nuclear Components in Accordance with RCC-M Edition 2007 and FM 1061

为更好地理解和应用RCC-M规范2007版、FM 1061修改单及其引用标准中对核设备锻件超声检验的规定,对不同规范及引用标准中的检验方法及验收标准进行详细比对和分析;结合工程实践经验,对制造过程中钻孔锻件的超声检验要求、4型锻件及锻件近表面检验要求,核岛主设备用低合金钢锻件的斜射横波检验DAC法的应用及验收要求的设计提出了建议。为同行在RCC-M规范体系下进行核设备锻件的超声检验设计、采购和制造提供参考。

In order to better understand and apply the requirements for ultrasonic testing of steel forgings of nuclear component in accordance with RCC-M edition 2007,FM 1061 and the relevant standards,this paper makes particular comparison and analysis of examination process and acceptance criteria between different codes and standards.Combined with the engineering practice,this paper aims to present recommendations on ultrasonic testing designing for examination of forgings with drill holes during manufacturing,for examination of type 4 forgings,for examination of near surface defects of forgings,and for application of DAC method of angle beam examination and associated acceptance criteria for low alloy steel forgings of nuclear primary component,respectively.It may provide reference for ultrasonic testing designing,procurement and manufacturing of forgings for nuclear components according to RCC-M code.