SFPP, LP — Hazardous liquid — incident on 2018-09-21

Hazardous liquid incident in CONCORD, CONTRA COSTA County, CA. Reported cause: MATERIAL FAILURE OF PIPE OR WELD. Reported consequences: 0 fatalities, 0 injuries, 0.4 REFINED AND/OR PETROLEUM PRODUCT (NON-HVL) WHICH IS A LIQUID AT AMBIENT CONDITIONS released, $248,750 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: 20180320.

Operator ID: 18092.

Reported incident date: 9/21/2018 20:57.

Location detail: CONCORD PS

Cause detail: DESIGN-, CONSTRUCTION-, INSTALLATION-, OR FABRICATION-RELATED

Cause detail: ON 9/21/18 AT 20:57, WHILE DOING HIS SHIFT INSPECTIONS, AN OPERATOR AT CONCORD NOTICED THE LEAK SENSOR ON TANK CC-9 BLINKING. ON FURTHER INVESTIGATION, HE NOTICED AN ODOR OF DIESEL AND FOUND THAT THE SUCTION/DISCHARGE LINE ON THE TANK WAS WET, AND THERE WAS STAINING IN THE SUMP PIT AREA (NOT ENGINEERED CONTAINMENT) UNDERNEATH THE TANK. THE TANK WAS DRAINED DRY AND INVESTIGATED INTERNALLY. TWO CRACKS WERE SUBSEQUENTLY DISCOVERED IN THE SUMP AREA WHERE FILL LINES ENTER THE SUMP. THE REPAIR TO THE CRACKS ENTAILED REPLACING A SECTION OF STEEL THAT WAS CUT OUT AND HAVING THE SUMP WALLS REINFORCED. UPDATE FOR SUPPLEMENTAL/FINAL 4/16/19-AN INTERNAL INVESTIGATION CONCLUDED THAT THE CRACKS THAT FORMED AS A RESULT OF INADEQUATE STANDARDS OR DESIGN CRITERIA AS THE LOCATION OF THE SUMP UMBRELLA/DEFLECTOR SUPPORTS WELDED TO THE BOTTOM PLATE NEAR THE SUMP WALL SECURING THE UMBRELLA/DEFLECTOR WERE INSTALLED TO CLOSE, A RESULT OF POOR DESIGN. DUE TO THE FUNCTIONALITY OF TYPICAL BREAKOUT TANKS INCLUDING INCOMING FLOW RATES, AND HIGH TURNOVER RATES, THESE UMBRELLA/DEFLECTORS RECEIVE SIGNIFICANT STRESS FROM CONSTANT NORMAL OPERATING PROCEDURES. 09/30/2024 - UPDATED BY PHMSA PER OPERATOR APPROVAL.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: MATERIAL FAILURE OF PIPE OR WELD — CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED.

PHMSA indexed costs: $256,961 reported total cost, $122,747.468 in 1984 dollars, $302,289.237 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.