SHELL PIPELINE CO., L.P.
hazardous_liquid Incident —
Incident Information
| Report Date | — |
| Operator | SHELL PIPELINE CO., L.P. |
| Commodity | — |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 37.72166, -121.54831 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
THE CONTROL CENTER COMMANDED THE PUMP UNIT TO SHUT DOWN DURING HYDRAULIC RATE MODIFICATIONS ON THE PIPELINE. THE CONTROL CENTER RECEIVED ALARMS OF THE UNITS CONTINUING TO RUN. THE CONTROL CENTER SHUT DOWN THE PIPELINE SYSTEM AND CONTACTED FIELD PERSONNEL TO INVESTIGATE. FAILURE OF THE ESD SYSTEM RENDERED THE CONTROL EQUIPMENT NON FUNCTIONAL DUE TO LOSS OF 48 VOLT POWER SYSTEM AND THE BACK UP ENERGY STORAGE DEVICE FAILED TO OPEN POWER CONTACT TO THE MOTOR STARTER OF THE PUMP UNITS, WHICH WOULD HAVE SHUT DOWN THE PUMP MOTOR. BARRIERS HAVE BEEN ADDED TO THE 48 VDC SYSTEM, REVISED THE PLC LOGIC, ADDED FAIL SAFE FEATURES, WILL USE THE SF6 SUB-STATION BREAKER AS A SECONDARY CONTROL BARRIER. PIPELINE RE-STARTED WITH THE PUMP STATION BYPASSED UNTIL REPAIRS WERE COMPLETED. THE PUMP STATION WAS RESTARTED ON JUNE 17TH WITH THE BARRIERS INSTALLED.
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.