GULF SOUTH PIPELINE COMPANY, LP — Gas transmission and gathering — incident on 2015-03-15

Gas transmission and gathering incident in DEQUINCY, CALCASIEU County, LA. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 10 NATURAL GAS released, $197,208 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: 20150045.

Operator ID: 31728.

Reported incident date: 3/15/2015 16:10.

Location detail: 40.3

Cause detail: EXTERNAL CORROSION

Cause detail: LEAK DISCOVERED ON PIPELINE THAT IS 7 FEET UNDER WATER IN A CREEK WITH A MUD LINE AT 11 FEET. PRESSURE WAS LOWERED FROM 375 PSIG TO 300 PSIG. INITIAL INDICATIONS ARE THAT THIS IS A FITTING LEAK. WHEN WATER RECEDES, REMEDIATION WILL OCCUR. UNTIL THAT TIME, THIS SECTION OF LINE REMAINS ISOLATED AND PRESSURE LOWERED. 2-12-16 LEAK IS LOCATED IN A DEEP CREEK IN A NARROW RIGHT OF WAY. FOR THIS REASON, REPAIR IS SCHEDULED FOR JULY/AUGUST 2016 TIME FRAME WHEN WATER LEVELS WILL BE LOWER AND PERMITTING CAN BE OBTAINED. 3-30-17 GULF SOUTH EXPECTS TO REPAIR IN LATE APRIL 2017. 5-18-17 GULF SOUTH CUT AND CAPPED THE LINE. THE FINAL REPORT IS BEING SUBMITTED NOW (9-26-17) BECAUSE OF THE AMOUNT OF TIME REQUIRED TO BE ABLE TO CORRECTLY DOCUMENT THE REPAIR COSTS. 10-16-17 REVISED APPARENT CAUSE TO EXTERNAL CORROSION BASED ON ADDITIONAL INFORMATION RECEIVED AND ANSWERED ADDITIONAL QUESTIONS THAT RESULTED FROM THAT CHANGE.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: CORROSION — EXTERNAL.

PHMSA indexed costs: $198,533 reported total cost, $99,991.066 in 1984 dollars, $245,188.111 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.