TARGA RESOURCES OPERATING LLC — Gas transmission and gathering — incident on 2015-10-09

Gas transmission and gathering incident. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 400 NATURAL GAS released, $492,000 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: 20150131.

Operator ID: 32296.

Reported incident date: 10/9/2015 9:30.

Cause detail: EXTERNAL CORROSION

Cause detail: TARGA RECEIVED NOTIFICATION OF A POTENTIAL LEAK ON A RISER TO THE PLATFORM AT ST 131 ON 10/5/2015. TARGA RESPONDED AND IDENTIFIED THE LEAK AS ORIGINATING FROM TARGA'S 8 INCH PIPELINE RISER. TARGA CLASSIFIED THE LEAK AS A NON-REPORTABLE INCIDENT BECAUSE THE VOLUME OF GAS LOST AND COST OF PROPERTY DAMAGE AND REPAIR WOULD NOT MEET THE LEVEL REQUIRED TO CLASSIFY AS AN INCIDENT. UPON ADDITIONAL EVALUATION OF THE COST TO REPAIR, TARGA DETERMINED ON OCTOBER 9, 2015 THAT THE COST TO REPAIR THE PIPELINE WOULD EXCEED $50,000 AND REPORTED THE LEAK AS AN INCIDENT.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: CORROSION — EXTERNAL.

PHMSA indexed costs: $493,230 reported total cost, $247,960.571 in 1984 dollars, $609,242.242 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.