ENERGY TRANSFER COMPANY — Gas transmission and gathering — incident on 2018-10-18

Gas transmission and gathering incident in KINGSVILLE, KLEBERG County, TX. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 213570 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: 20180117.

Operator ID: 32099.

Reported incident date: 10/18/2018 10:50.

Location detail: 498+54

Cause detail: EXTERNAL CORROSION

Cause detail: ON 10-18-18 AT APPROXIMATELY 10:50AM, ENERGY TRANSFER EXPERIENCED A RELEASE OF NATURAL GAS ON THE 3045 AQUA DULCE TO LOMA BLANCA SYSTEM IN KINGSVILLE, TX. ENERGY TRANSFER PERSONNEL ARRIVED ON SITE AT APPROXIMATELY 11:08 AM AND IDENTIFIED AT 11:10 AM THAT THE PIPELINE BELONGED TO ENERGY TRANSFER. COMPANY PERSONNEL IMMEDIATELY PROCEEDED TO SHUT IN PIPELINE BY SHUTTING IN THE UPSTREAM MAINLINE VALVE AND DOWNSTREAM MAINLINE VALVE AT 11:35AM AND 12:07PM RESPECTIVELY. THE AFFECTED PIPE SEGMENT WAS CUT OUT AND SENT TO A LABORATORY FOR TESTING AND REPLACED WITH PRE-TESTED PIPE. ENERGY TRANSFER RAN MULTIPLE ILI INSPECTION TOOLS TO VERIFY PIPELINE INTEGRITY. THE PIPELINE WILL BE BROUGHT BACK TO NORMAL SERVICE FOLLOWING SUCCESSFUL ILI INSPECTION. THE CAUSE OF THIS RELEASE IS CURRENTLY UNDER INVESTIGATION. 48HR FOLLOW UP NRC # 1227958. THIS FACILITY IS UNDER THE JURISDICTION OF THE TEXAS RAILROAD COMMISSION. UPDATE MADE ON 3/29/2019 THE CAUSE OF THIS RELEASE HAS BEEN IDENTIFIED AS EXTERNAL MICROBIOLOGICALLY INDUCED CORROSION. THE PIPELINE WAS BROUGHT BACK TO SERVICE WITH NO PRESSURE RESTRICTIONS ON 3-21-19 FOLLOWING A SUCCESSFUL ILI ASSESSMENT. UPDATE MADE ON 9/6/2019 WE RECEIVED A FINAL ROOT CAUSE ANALYSIS FROM A 3RD PARTY CONTRACTOR. THEIR ANALYSIS ATTRIBUTED THE CAUSE OF THE FAILURE TO EXTERNAL CORROSION WHICH LED TO A DUCTILE OVERLOAD. IN AN EFFORT TO PREVENT REOCCURRENCE , ENERGY TRANSFER WILL BE CONDUCTING ADDITIONAL VERIFICATION DIGS ON THIS SYSTEM AND A CLOSE INTERVAL SURVEY WILL BE CONDUCTED IN CONJUNCTION WITH THE NEXT SCHEDULED IN LINE INSPECTION.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: CORROSION — EXTERNAL.

PHMSA indexed costs: $978,273 reported total cost, $799,488.078 in 1984 dollars, $1,129,117.814 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.