How to fill in the quality grade for ultrasonic testing of pressure vessels
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According to the amendment to NB/T 47013-2015 \"Non-destructive testing of pressure equipment\", the ultrasonic testing quality grades I, II, III, IV, and V have been changed to TⅠ, I, II, III, and IV respectively. How do you fill in the technical requirements? Could there be any mistakes if purchases are made based on these amendments? Please feel free to share your opinions.
TⅠ is new; the teacher who developed this coding standard said that level I of the new standard is the same as level I of the old standard. There is no need to upgrade the design drawings to Tier TⅠ. Writing at level I will meet the requirements.
Aren’t there standards? Just write according to those standards, right?
The technical requirements are classified as B, AB, A. The quality grades and acceptance levels are: I, II, III
See page 116 of NB/T47013