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1 主要内容和适用范围本标准规定了常压钢质油罐焊缝超声波探伤中对人员、仪器、探头、试块的要求,以及探伤的操作方法、探伤结果的质量评定。本标准适用于常压钢质油罐4～32mm厚度的对接、搭接、T型焊缝的超声波探伤。本标准不适用于铸件、奥氏体不锈耐酸钢焊缝的超声波探伤。
1 main content and scope of application This standard specifies the requirements of personnel, instruments, probes, test blocks, as well as the operation method of flaw detection, quality evaluation of the test results of the ultrasonic flaw detection of the weld oil in the atmospheric steel tank. This standard applies to atmospheric pressure steel tank 4 ~ 32mm thickness of the butt, lap, T-weld ultrasonic flaw detection. This standard does not apply to castings, austenitic stainless steel acid-weld ultrasonic testing.