ASME B&PV SECTION VIII OVERPRESSURE PROTECTION
ASME B&PV SECTION VIII OVERPRESSURE PROTECTION
(OP)
If a Section VIII vessel normally operates with a gas bubble, but under extreme circumstances can be lined up to fill the tank solid, does one need to protect the tank from over pressure with a gas relief AND a water relief? Would Section VII code requirements for overpressure protection be met if one could provide a gas relief for normal operation and use administrative guidelines i.e., procedures, to ensure that the valve line-up that would fill the vessel solid never happens?





RE: ASME B&PV SECTION VIII OVERPRESSURE PROTECTION
I'd think a relief valve sized for vapor/gas relief would cover the liquid relief requirements, in general.
RE: ASME B&PV SECTION VIII OVERPRESSURE PROTECTION
RE: ASME B&PV SECTION VIII OVERPRESSURE PROTECTION
In any case, as a genereral statement it is probably acceptable to take credit for administrative controls. I would highly recommend the decision to do so be made by a process hazards ananlsys or risk assessment group, not any one individual. Everyone involved in the decision needs to be familiar with the process, systems, equipment, and operating practices.
RE: ASME B&PV SECTION VIII OVERPRESSURE PROTECTION
Thanks for your response!