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[hum464]

Hello,

I’m reviewing a calculation sheet for a liquid ammonia storage tank designed to API 620 App "R". One of the scenarios listed is heat gain from pump (8,256 kg/hr), which turns out to be the largest and governing case for PSV sizing (picture attached below).

My question is: what could be the cause of such a high relief requirement from pump heat gain? According to API 2000, the common scenarios are normal/thermal outbreathing, fire exposure, and some specific cases related to refrigerant tanks (Section 4).

Has anyone encountered a similar situation, or can explain why pump heat input would dominate the PSV sizing?

 

 

[breizh]

Consider the link underneath:
https://ammoniaknowh...-storage-tanks/

You may want to contact them.

Breizh