本标准适用于焊接件对接处厚度8～120mm 的化学、石油工业钢制压力容器对接焊缝的超声波探伤。本标准不适用于铸钢、奥氏体不锈耐酸钢制压力容器对接焊缝的超声波探伤。一、操作者1.焊缝探伤应由具有一定横波探伤经验的人担任。2.操作者必须认真负责,并掌握所探工件的材质、焊缝坡口形式、焊接工艺、缺陷可能产生的部位等情况,根据萤光屏上波形反射情况进行综合判断。 This standard applies to the welding of butt joints at a thickness of 8 ~ 120mm chemical and oil industry steel pressure vessel butt weld ultrasonic flaw detection. This standard does not apply to cast steel, austenitic stainless steel acid pressure butt weld ultrasonic testing. First, the operator 1. Weld inspection should have a certain experience of people who have experience in transverse wave. 2. The operator must be responsible and responsible, and master the material of the workpiece, weld groove form, welding process, defects may occur parts of the situation, according to the fluorescent screen waveform reflection comprehensive judgment.