TENNESSEE GAS PIPELINE CO (EL PASO) — Gas transmission and gathering — incident on 2011-11-16

Gas transmission and gathering incident in Not Within a Municipality, MORGAN (HOMER TOWNSHIP) County, OH. Reported cause: NATURAL FORCE DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 79000 NATURAL GAS released, $400,000 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: 20110393.

Operator ID: 19160.

Reported incident date: 11/16/2011 8:41.

Location detail: 205-4 + 11.28

Cause detail: EARTH MOVEMENT, NOT DUE TO HEAVY RAINS/FLOODS

Cause detail: TENNESSEE GAS PIPELINE (TGP) WAS NOTIFIED BY A LOCAL RESIDENT OF A RUPTURE AND A FIRE ON ITS 200-4 PIPELINE IN MORGAN COUNTY, OHIO, NOVEMBER 16, 2011. TGP PERSONNEL RESPONDED AND ISOLATED THE VALVE SECTION. THERE WERE NO FATALITIES NOR INJURIES REQUIRING HOSPITALIZATION. INVESTIGATION INTO THE CAUSE OF THE RUPTURE RESULTED IN THE CONCLUSION THAT THE FAILURE WAS DUE TO EXCESSIVE STRAIN FROM THE ONGOING PROGRESSION OF AN EARTH LANDSLIDE ON ONE OF THE PIPELINE'S GIRTH WELDS AND SUBSEQUENT FAILURE OF THE WELD. A CRACK IN THE GIRTH WELD ACTED AS A STRESS CONCENTRATOR AND THE DISPLACEMENT (STRAIN) OF THE PIPELINE OCCURRED THROUGH THE LANDSLIDE. EVEN IN THE ABSENCE OF A CRACK IN THE GIRTH WELD, THE LANDSLIDE LIKELY COULD HAVE RESULTED IN A PIPELINE FAILURE AT A LATER TIME IF THE LANDSLIDE REMAINED UNDETECTED AND UNMITIGATED. PART A - PIPELINE RESTART DATE ADDED. PART C - THERE WAS COMPLETE SEPARATION OF THE PIPELINE. PART B - REVISED PIPELINE STATIONING FOR INCIDENT LOCATION (MHM). PART B - RE-ENTERED ENTIRE PART B INFORMATION DELETED BY PHMSA (MHM)

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: NATURAL FORCE DAMAGE — EARTH MOVEMENT.

PHMSA indexed costs: $1,883,770 reported total cost, $1,052,533.651 in 1984 dollars, $2,370,996.12 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.