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don 1980. In fact the relief valve would be a second layer of protection in a gas filled vessel, as long as the applied standards require a depressurization system linked to the fire & gas system. However, in such standards it is also required the installation of relief valves in ASME VIII...

Hi everybody, Currently I am designing the relief system for a gas plant, my question is about the relieving temperature in fire case. The vessel I am protecting is protected at the top of the rating 600#, the operationg temperature is 90°F, then I set the design temperature 50°F above (140°F)...

Ok, thank you for your help, it's been really usefull for my design.

I am estimating erosional velocity as reported in API 14E, Ve = C/(PM)^0.5 Setting C as 125, recommended for intermittent service. Then, in this case (relief), it is recommendable to ignore the velocity parameter and take into account only the back pressure to size the outlet pipe of the relief...

According to that, I will size the PSV before the Well Separator at full capacity with antoher valve as spare (with the same set point), and I will size the rest of the valves downstream considering the other probable contingencies. I mislead the term critical velocity, I meant erosional...

Another question, I have been sizing the relief header for the same system in the drawing above, the criteria used in the standards is back pressure, however, when i calculate the stream velocity it is above the critical velocity, while back pressure is below the range recommended. Someone told...

Ok, I send you the drawing. If I understand, according to TD2K, the relief valves downstream the first relief valve must be sized for zero flow in case of blocked outlet, so the sizing of the rest of the valves must be performed only for fire case? Thank you in advance...

Hi, I am designing a relief system for a gas dehydration station, the equipment handling high pressure gas are the well separator receiving the well stream, the inlet dehydration scrubber, the glycol contactor and the outlet dehydration scrubber. All of these equipment will have installed relief...