Sort MOC triggers from routine work
Classify field changes by whether they are replacement-in-kind, normal work, MOC, or emergency deviation.
Classify each example by the change-control response it most likely needs. Normal approved work Replacement-in-kind MOC required Emergency deviation Replace a failed pressure gauge with the same approved range, material, and spec Use a different gasket material because the approved one is out of stock Follow the approved weekly sump inspection procedure Temporarily bypass a trip to stabilize the process under formal shift-superintendent approval Change chemical injection concentration outside the approved operating envelope Swap a damaged hose with the same rated hose listed in the procedure Route flow through a temporary spool not shown on the P&ID Delay a proof…
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