Coil in reactor under external pressure
Coil in reactor under external pressure
(OP)
I've got a coil in a reactor. Conditions may be met such that the coil is under external pressure, hence the ASMI VIII Div 1 UG-28 calc.
MoC is ASTM A312 TP321/321H. High temp service (1000 F)
For the calculation of A and B factors, there's no chart in ASME II for determining these numbers.
How to proceed? May I use 304(L) or 316(L) as they have a more or less the same chemical balance?
MoC is ASTM A312 TP321/321H. High temp service (1000 F)
For the calculation of A and B factors, there's no chart in ASME II for determining these numbers.
How to proceed? May I use 304(L) or 316(L) as they have a more or less the same chemical balance?





RE: Coil in reactor under external pressure
RE: Coil in reactor under external pressure
RE: Coil in reactor under external pressure
Your external calc should end up about half the psi as internal, Easy check.
RE: Coil in reactor under external pressure
RE: Coil in reactor under external pressure
Either calc works, I think -- but I add in the Corrosion Allowance - C.A. after I establish min thickness - Tmin
RE: Coil in reactor under external pressure