[ebarker]

The 16-004-011 Relief Valve in the KOP is a generic relief that is designed to be field set from 75 to 150 psi.

The item can be ordered from the factory pre-calibrated at any pressure you want. Usually but not always it arrives in good order in the KOP set at 125.

In the past 5 years we have received 2 not calibrated correctly. I'm not talking NIST traceable calibration. I'm talking about using the KOP pressure gauges as reference.

We always confirm the relief at 125 gauge pressure as we test out our system. This year we have built two system in parallel (one is a training system).
One system checked out. The second system went to 135 before we ended the test. We will have to calibrate the relief.

I don't agree with the FIRST policy of "do not adjust". There should be a two step procedure instead.

Part 1 is confirming the relief setting which includes shutdown and purge at 135 if the test fails. Not going clear to 160.

Part 2 is correcting the relief setting if necessary.

IMHO !