ATMOS ENERGY CORPORATION - MID-TEX — Gas transmission and gathering — incident on 2019-04-22

Gas transmission and gathering incident in DECATUR, WISE County, TX. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 62.4 NATURAL GAS released, $165,000 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: 20190061.

Operator ID: 31348.

Reported incident date: 4/22/2019 14:36.

Location detail: 16972

Cause detail: EXCAVATION DAMAGE BY THIRD PARTY

Cause detail: LOCATING ISSUE

Cause detail: FACILITY NOT MARKED DUE TO LOCATOR ERROR

Cause detail: ADDITIONAL NRC REPORT NUMBER 1243764 ON APRIL 22, 2019 AT 14:36, A THIRD-PARTY CONTRACTOR HIT ATMOS ENERGY'S LINE W 12-1 WHILE DRILLING TO INSTALL A BILLBOARD POLE, PUNCTURING THE LINE AND CAUSING A LEAK. THE LINE SEGMENT WAS ISOLATED AT 19:50 AND A CONTROLLED GAS RELEASE WAS PERFORMED UNTIL THE PRESSURE WAS ELIMINATED. CNG RESOURCES WERE UTILIZED TO SERVE 5 CUSTOMERS DURING THE SHUTDOWN. ON APRIL 23, 2019 AT 19:02, THE DAMAGED SECTION OF PIPE WAS REMOVED AND REPAIRS COMMENCED. SERVICE WAS RESTORED AT 18:50 ON APRIL 24, 2019. AFTER INVESTIGATION OF THE INCIDENT, IT WAS DETERMINED THAT THE CONTRACT LOCATOR DID NOT APPROPRIATELY MARK THE LINE.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: EXCAVATION DAMAGE — THIRD PARTY EXCAVATION DAMAGE.

PHMSA indexed costs: $349,112 reported total cost, $163,825.074 in 1984 dollars, $402,892.563 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.