SUNOCO PIPELINE L.P. — Hazardous liquid — incident on 2015-05-28

Hazardous liquid incident in CORSICANA, NAVARRO County, TX. Reported cause: INCORRECT OPERATION. Reported consequences: 0 fatalities, 0 injuries, 20 CRUDE OIL released, $0 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: 20150230.

Operator ID: 18718.

Reported incident date: 5/28/2015 7:00.

Location detail: 0+00

Cause detail: VALVE LEFT OR PLACED IN WRONG POSITION, BUT NOT RESULTING IN A TANK, VESSEL, OR SUMP/SEPARATOR OVERFLOW OR FACILITY OVERPRESSURE

Cause detail: ON 5/28/15 AT APPROXIMATELY 07:00 CONSTRUCTION CREWS DISCOVERED A CRUDE OIL SPILL FROM A VENT VALVE ON THE 8-16" FILL LINE. THE VENT VALVE WAS IMMEDIATELY CLOSED AND THE RELEASE WAS STOPPED. PERSONNEL WERE MOBILIZED TO CONTAIN AND RECOVER ANY FREE CRUDE AND CLEAN UP THE IMPACTED AREA. APPROXIMATELY 20BBLS WAS RELEASED AND 17BBLS WERE RECOVERED. CONTAMINATED SOIL WAS REMOVED FOR ONSITE REMEDIATION. CONSTRUCTION WORK WAS BEING CARRIED OUT TO TIE IN A NEW 16" LINE INTO THE EXISTING 8-16" FILL LINE. ON 5/26/15 THE 8-16" FILL LINE WAS DRAINED AND BLINDED AND BELIEVED TO BE COMPLETELY ISOLATED FROM ANY SOURCE OF PRODUCT. ROOT CAUSE ANALYSIS OF THE EVENT DETERMINED THAT A SMALL DIAMETER BALL VALVE ASSOCIATED WITH A THERMAL RELIEF SYSTEM HAD NOT BEEN IDENTIFIED VIA THE LO/TO PRE-PLAN PROCESS PRIOR TO THE BEGINNING OF CONSTRUCTION WORK ON THE 8-16" FILL LINE. THIS OPEN VALVE ALLOWED CRUDE TO FLOW AT A SLOW RATE THROUGH THE THERMAL RELIEF TUBING FROM A SEPARATE SUCTION LINE AND INTO THE 8-16" FILL LINE AND EVENTUALLY OUT OF THE VENT VALVE.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: INCORRECT OPERATION — INCORRECT VALVE POSITION.

PHMSA indexed costs: $30,163 reported total cost, $15,131.776 in 1984 dollars, $37,264.908 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.