침투탐상검사 규격침투비파괴검사기사 · 2017년05월07일 · 70/80
70.보일러 및 압력용기에 대한 침투탐상검사(ASME Sec.V Art.6)에서 염색침투탐상을 할 경우에 지시를 관찰하기에 적당한 조도는 최소 몇 lx인가?
1
200
2
800
3
1000정답
4
2000
해설
T-676.3 Color Contrast Penetrants. The minimum light intensity shall be 100 fc (1 076 lx). The light intensity, natural or supplemental white light source, shall be measured with a white light meter prior to the evaluation of indications or a verified light source shall be used. Verification of light sources is required to be demonstrated only one time, documented, and maintained on file.