TENNESSEE GAS PIPELINE CO (EL PASO) — Gas transmission and gathering — incident on 2011-06-26

Gas transmission and gathering incident. Reported cause: OTHER OUTSIDE FORCE DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 11500 NATURAL GAS released, $250,000 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: 20110254.

Operator ID: 19160.

Reported incident date: 6/26/2011 14:40.

Cause detail: ROUTINE OR NORMAL FISHING OR OTHER MARITIME ACTIVITY NOT ENGAGED IN EXCAVATION

Cause detail: A GULF OF MEXICO OFFSHORE PRODUCER OBSERVED BUBBLES IN VERMILLION AREA BLOCK 76 AND CALLED IT IN TO TGP GAS CONTROL. THE FIELD PERSONNEL RESPONSIBLE FOR THIS AREA OF THE PIPELINE OPERATIONS RESPONDED AND DETERMINED THAT THE LEAK WAS ON TGP'S 509A-1601 PIPELINE, A LATERAL TIED INTO TGP'S BLUEWATER WEST LEG. ISOLATION VALVES WERE CLOSED IN ORDER TO INVESTIGATE. DIVERS DETERMINED THE SOURCE OF THE LEAK WAS A BROKEN 1/2-INCH DRAIN LINE ON THE SIDE OF A 6-INCH TIE-IN VLAVE. PHYSICAL EVIDENCE INDICATED THAT THE LINE WAS BROKEN BY A HUNG SHRIMP NET. REPAIRS WERE MADE AND THE FACILITY WAS PLACED BACK INTO SERVICE.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: OTHER OUTSIDE FORCE DAMAGE — FISHING OR MARITIME ACTIVITY.

PHMSA indexed costs: $643,000 reported total cost, $409,155.859 in 1984 dollars, $670,609.016 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.