don1980 The governing purpose of the PSV is to protect the pump and piping from overpressure due to blocked flow. I need to look this up but my understanding is that inside the plant, ABSA (Alberta Boiler Safety Authority) requires adherence to B31.3 which I believe specifies that all pressure...
bljnv - pump overpressure protection relief back to the source vessel is common practice. You give a description of one of the advantages of pilot PSVs. Another major advantage of pilot PSVs is that they can tolerate more than the 10% backpressure that conventional PSVs are limited to, and...
bljnv - The application is: fluid: natural gas hydrocarbon condensate liquid (condy)from an inlet separator; pumped to atmospheric storage where the condy is weathered to flare. On blocked flow the discharge PSV (set at 1440 psig) is to relieve back to the inlet separator that has a PSV set at...
The suction pressure of the triplex pump can be as high as 845 psig.
The PSV set at 1440 psig on the discharge relieves to the suction.
Because of the potential of high backpressure we believe a pilot PSV is required.
However, the vendors only have ANSI-150 outlet flanges for pilots with...
