ACADIAN GAS PIPELINE SYSTEM — Gas transmission and gathering — incident on 2014-02-27

Gas transmission and gathering incident in GRAND BAYOU, ASSUMPTION PARISH County, LA. Reported cause: INCORRECT OPERATION. Reported consequences: 0 fatalities, 0 injuries, 0 NATURAL GAS released, $0 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20140033.

Operator ID: 3.

Reported incident date: 2/27/2014 9:25.

Location detail: 2436+21

Cause detail: OTHER INCORRECT OPERATION

Cause detail: THE 6 INCH CHICO B PIPELINE RELIEF VALVE OPENED TO ATMOSPHERE DUE TO THE CONTROLLER FAILING TO RESPOND TO HIGH PRESSURE ALARM. PIPELINE CONTROL FOLLOWED ESTABLISHED PROCEDURES TO EVALUATE THE CONTROLLER RESPONSE; THE CONTROLLER WAS RE-TRAINED AND RE-QUALIFIED TO PREVENT REOCCURRENCE. THE RELIEF VALVE FUNCTIONED PROPERLY OF WHICH RESULTED IN THE INTENTIONAL RELEASE TO THE ATMOSPHERE. PURSUANT TO OPERATOR JUDGMENT THAT IT WAS A SIGNIFICANT EVENT DUE TO THE SENSITIVITY OF THE CIRCUMSTANCE WHERE INCIDENT OCCURRED, THE NRC WAS NOTIFIED BASED ON THE INFORMATION AVAILABLE AT THE TIME.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: INCORRECT OPERATION — OTHER INCORRECT OPERATION.

PHMSA indexed costs: $29,769 reported total cost, $20,593.266 in 1984 dollars, $25,285.403 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.