Maintaining Process Equipment - Loss of Containment
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A Learning Event Bulletin related to Maintaining Process Equipment - Loss of Containment.
What Happened?
While installing a temporary pig launcher for an inline inspection (ILI), workers identified the tie-in valve was passing and there was unexpected pressure in the pipeline. Attempts were made to depressurise the pipeline at the receiver end approximately 7 km downline. Pressure remained at the launcher location so the work was stopped, the pig launcher removed and the blind flange re-instated.