Pressure Test Result Prediction with Average Allowable Rate of change – The DARTT Recorder samples data over a few seconds, removing motion induced pressure noise (vessel or rig heave causing water hammer) and displaying psi/min. So why is using the ROC of such significance? 1) You cannot pass a pressure test until you have met the Average Allowable ROC. 2) Typically, the ROC will be met well before the end of a pressure test Hold Period.
Please read the originial post here: https://ncan.us/gas-pipeline-intelligent-pressure-test-leakage-testing-instrument/