kpl012
Mechanical
- May 30, 2014
- 33
I inherited a system that has class 300 lb. CRES316L pipe flanges. The issue is the steam system design pressure is 420 psi, 470F. I have tried the annex D calc in B16.5 but come up short 401 psi. The calc uses a ceiling pressure also. Can anyone tell me the purpose of the ceiling pressure and is there a way to justify leaving them in place ?
