침투탐상검사 규격침투비파괴검사기사 · 2018년03월04일 · 73/80
73.보일러 및 압력용기에 대한 침투탐상검사(ASME Sec.V Art.6)에 의해 용접부위를 침투탐상시험할 때 용접선을 기준으로 양측으로 적어도 어느 정도까지 전처리를 하여야 하는가?
1
25.4mm(1.0 inch)정답
2
38.1mm(1.5 inch)
3
50.8mm(2.0 inch)
4
63.5mm(2.5 inch)
해설
(b) Prior to each liquid penetrant examination, the surface to be examined and all adjacent areas within at least 1 in. (25 mm) shall be dry and free of all dirt, grease, lint, scale, welding flux, weld spatter, paint, oil, and other extraneous matter that could obscure surface openings or otherwise interfere with the examination.