EXXONMOBIL PIPELINE CO — Hazardous liquid — incident on 2022-01-19

Hazardous liquid incident in PASADENA, HARRIS County, TX. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 0.36 REFINED AND/OR PETROLEUM PRODUCT (NON-HVL) WHICH IS A LIQUID AT AMBIENT CONDITIONS released, $190 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: 20220029.

Operator ID: 4906.

Reported incident date: 1/19/2022 8:40.

Location detail: STATION VALVE

Cause detail: NON-THREADED CONNECTION FAILURE

Cause detail: INCIDENT OVERVIEW: DURING A DELIVERY TO A 3RD PARTY CUSTOMER, THE PACKING ON VALVE #700 BEGAN TO LEAK LEADING TO APPROXIMATELY A 15 GALLON RELEASE OF PRODUCT. EXXONMOBIL PIPELINE COMPANY LLC. (EMPCO) TOOK IMMEDIATE ACTION TO STOP THE RELEASE BY CLOSING THE UPSTREAM & DOWNSTREAM VALVES, AND CLOSING VALVE #700 TO ISOLATE THE BODY. APPROXIMATELY 7.5 GALLONS WAS CONTAINED TO THE CONCRETE PAD UNDER THE VALVE AND RECOVERED. ALL CONTAMINATED ROCK UNDER THE VALVE WAS REMOVED AND REPLACED WITH CLEAN ROCK. PREVENTING REOCCURRENCE: ONCE THE VALVE WAS ISOLATED, VALVE PACKING WAS ADDED, THE VALVE WAS LEAK TESTED WITH NITROGEN TO ENSURE THE PACKING WAS HOLDING, AND THE LINE WAS RECOMMISSIONED. EMPCO PERFORMED ADDITIONAL WALK AROUNDS TO ENSURE THE VALVE STEM AND PACKING WAS HOLDING. UPDATED PART G TO "NON-THREADED CONNECTION" AND "SEAL OR PACKING" PER PHMSA REQUEST.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — NON-THREADED CONNECTION FAILURE.

PHMSA indexed costs: $1,035 reported total cost, $446.832 in 1984 dollars, $1,100.409 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.