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超声检测校准试块的设计是保证核电安全运行的重要环节,本文根据国内相关核电标准结合工作经验,对核I级部件原材料制造阶段的超声检测试块设计进行归纳和总结。根据ASME标准第III卷NB分卷和第V卷及相关附录的要求,板材直射波检验采用平底孔阶梯试块,斜射波检验采用平板切槽试块;锻件和棒材直射波检验采用和板材相同的平底孔阶梯试块,斜射波检验采用环形的内外壁切槽试块;管材斜射波检验采用管状的内外壁切槽试块;铸件直射波检验采用平底孔试块,斜射波检验采用横孔试块,螺栓螺母材料检测直射波和斜射波检验采用圆柱形平底孔校准试块。原材料超声检测校准试块的设计遵循第III卷为总的要求,第V卷及相关附录为具体要求的原则,更容易理解标准,从而更好地运用标准。
The design of ultrasonic testing and calibration block is an important part to ensure the safe operation of nuclear power. This paper summarizes the design of ultrasonic testing block in the manufacturing stage of raw materials of nuclear I-class component according to the relevant nuclear power standard in our country. According to the requirements of ASME Standard Volume III Volume NB and Volume V and the related appendix, flat bottom hole ladder test block is adopted for direct wave inspection of slab test, slab grooving test block is adopted for oblique wave inspection; direct wave inspection for forgings and bars is adopted and slab The same flat-bottomed hole ladder test block, oblique wave test using circular inner and outer wall grooving block; pipe oblique wave test using tubular inner and outer wall grooving test block; cast direct wave test using flat bottom hole test block, oblique wave test using horizontal Hole test block, bolt and nut material testing Direct and oblique wave test using cylindrical flat-bottomed hole calibration block. The design of raw materials for ultrasonic testing and calibration of test blocks follows the general requirements of Volume III and Volume V and related annexes are the principles of specific requirements to make it easier to understand the standards and to make better use of the standards.