1985 Allowable Stress Values
1985 Allowable Stress Values
(OP)
I have to perform remaining life calculations for an in-service vessel. The vessel was constructed in 1986, construction Code was ASME Section VIII Division 1 Edition 1985 plus summer addenda. Material is A-516-70. Design Temp is 85C.
API-510 does not permit to use the allowable stresses from current edition of ASME II-D if vessel is constructed prior to 1999.
From where I can get stress values of Section II-D Edition 1985? I don't have access to 1985 edition of II-D. The factor of safety (on UTS) was 4 or 5 in 1985?
Javed Nasir
Inspection Engineer
Technip-France Abu Dhabi
API-510 does not permit to use the allowable stresses from current edition of ASME II-D if vessel is constructed prior to 1999.
From where I can get stress values of Section II-D Edition 1985? I don't have access to 1985 edition of II-D. The factor of safety (on UTS) was 4 or 5 in 1985?
Javed Nasir
Inspection Engineer
Technip-France Abu Dhabi





RE: 1985 Allowable Stress Values
I believe the factor changed from 5 to 4 in 1950 for vessels constructed to ASME Sec. VIII.
RE: 1985 Allowable Stress Values
Thanks for your valued comment. I found also answer from the below reference.
Ref: Companion Guide to the ASME Boiler and Pressure Vessels Code; 2nd Edition; Chapter No. 3
Factor of Safety from mid 1940s to 1998 was 4 on UTS and that Section II Part D was first time published in 1992. Before its publication, stress tables were the part of individual Code book.
Javed Nasir
Inspection Engineer
Technip-France Abu Dhabi
RE: 1985 Allowable Stress Values
API510,API570,API653,API577,API571,
API580, NBIC AI. A.S. Eng, BSME