API 620 - Using mill certificate test resultsFrom: MattW 
Date: Tuesday, November 25, 2008
Time: 6:10:22 AM
Remote Name: 22.214.171.124
CommentsWhere a cryogenic tank designed to API 620 Appendix Q uses ASTM A516 Gr 60 material can the properties taken from the mill certificate be used in a design assessment?
We have heard that there is a caveat somewhere in API 620 allowing use of actual material values for design assessment. Does anybody know where the relevant section in API 620 can be found?