EXXONMOBIL PIPELINE CO
hazardous_liquid Incident — — February 2, 2011
Incident Information
| Incident Date | February 2, 2011 |
| Operator | EXXONMOBIL PIPELINE CO |
| Commodity | REFINED AND/OR PETROLEUM PRODUCT (NON-HVL) WHICH IS A LIQUID |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 29.88583, -95.41083 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $45,000 |
| Other Costs | $0 |
Location Map
Incident Narrative
"UNKNOWN FLOW SOURCE (SUSPECT PSV BUT UNPROVEN) STARTED RELIEVING TO SUMP DURING DELIVERY OF DIESEL TO NORTH HOUSTON TERMINAL. -SUMP TANK AUTOMATICALLY PUMPED ~150 BBL TO TERMINAL SLOP TANK UNTIL SLOP TANK EHL SHUT DOWN THE SUMP PUMP. -UPON RECEIVING SLOP TANK EHL ALARM THE OCC CONTROLLER COMMANDED THE METER STATION ESD VALVE TO CLOSE. -ESD VALVE (MOTOR-OPERATED GATE VALVE) WAS FROZEN OPEN DUE TO ICE ACCUMULATION ON THE STEM. -ESD VALVE STEM COVER WAS IN PLACE AND IN GOOD CONDITION, BUT MOISTURE HAD ACCUMULATED INSIDE THE COVER. -CONTROLLER SHUT DOWN THE PIPELINE WHEN UNABLE TO CLOSE THE DRAW VALVE. -SUMP TANK OVERFILLED DURING BIPL SHUTDOWN. -DURING TESTING EMPCO WAS UNABLE TO DETERMINE THE SOURSE OF THE FLOW TO THE SUMP. ALL DRAIN VALVES AND PSVS WERE REPLACED."
About This Pipeline Incident
Pipeline incident data is reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA). All significant incidents involving fatalities, injuries, or property damage over $50,000 must be reported.