Im looking at a vessel fabricated in 1972 ,heads and shells SA516-70 mawp 900 psi @ 265 F, shell and head normalized and PWHT , 18" LWN 400# flange manway with blind , pressuer tested to 1429 psi signed off and accepted , all other small 2" nozzles were 600# , my calcs. and charts show a 400# LWN flange will not support 900 psi, I don't have access to a code of that era was there some work around for the manway, since it is intended fro a new service I think it has to meet all current code to operate.
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
scetion VIII 1
- Thread starter ird192
- Start date
Christine74
Mechanical
Per the 1968 edition of USA Standard B16.5 (now ASME B16.5), the allowable pressure of carbon steel 400# flanges is 917 psi at 265°F.
-Christine
-Christine
- Thread starter
- #3
-
1
- #4
- Status
Similar threads
- Question
- Question