PSV relief case
PSV relief case
(OP)
Hi,
I'm currently doing PSV failure consequence assessment on an oil platform and I have a question on a PSV downstream of an accumulator (refer to attached sketch). I have found few cases like this but I am not sure what is the relief scenario for the PSV. What is the PSV for?
Thank you.
I'm currently doing PSV failure consequence assessment on an oil platform and I have a question on a PSV downstream of an accumulator (refer to attached sketch). I have found few cases like this but I am not sure what is the relief scenario for the PSV. What is the PSV for?
Thank you.





RE: PSV relief case
Closed valve and overpressure from PD pump?
Closed valve and thermal expansion?
Fire exposure on vessel?
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.
RE: PSV relief case
Dejan IVANOVIC
Process Engineer, MSChE
RE: PSV relief case
RE: PSV relief case
Dejan IVANOVIC
Process Engineer, MSChE
RE: PSV relief case
If you want a firecase PSV to operate only for firecase, then its setpoint should be some what higher than than the blocked discharge PSV.
Depending on which country this HPU is located in, you may have this firecase PSV setpoint set at 1.05x 228barg, or 1.1x 228barg. So this setpoint needs to be corrected. Also check the local codes for max permissible relieving pressure used in the calculation for deriving the firecase load.