I am trying to clarify if performing a calculation for t-min. on a vessel, when inputing the pressure(P), would you use the MAWP/design from the dataplate or U-1 form only, or would you add the static head to the MAWP.
Question 2: After performing t-min calcs, would you add the corrosion...
In calculating the t-min for a small propane tank it seems that the t-min is equal to the nominal. The vessel is designed for 250 psi @650 F which it would never see. It is made from SA-455. Can I derate this just by lowering the Max temp to 450F and attaching a new plate with this info or what...
If there is a repair done on the cladding of an atmospheric column around a nozzle, would this be considered a code repair requiring the useof an "R" stamp holder etc. There is a leak noted from the telltale nozzle which has a s.s. insert and is seal welded at both ends of the nozzle. The...
