Acceptance criteria for Ultrasonic Test (UT)

(Refer: Mandatory Appendix 12 (Page 435) of ASME BPVC Section VIII Div 1, 2017 Edition.) (a) Indications characterized as cracks, lack of fusion, or incomplete penetration are unacceptable regardless of length. (b) Other imperfections are unacceptable if the indications exceed the reference level amplitude and have lengths that exceed: where T is the thickness of […]