NORTHERN BORDER PIPELINE COMPANY
gas_transmission Incident — — November 30, 2013
Incident Information
| Incident Date | November 30, 2013 |
| Operator | NORTHERN BORDER PIPELINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 47.76903, -103.49969 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $1,508 |
| Emergency Response | $300 |
| Other Costs | $0 |
Location Map
Incident Narrative
AT 13:51 ON 11/30/2013 THE STATION CONTROL PANEL PROGRAMMABLE LOGIC CONTROLLER (PLC) FAILED DUE TO A DIGITAL INPUT CARD FAILURE. THE PLC FAILURE CAUSED THE STATION TO SHUT DOWN AND BLOW DOWN. THE STATION ISOLATION VALVES AND BLOWDOWN VALVE OPERATED CORRECTLY AND VENTED THE STATION MAIN GAS PIPING. AT THE SAME TIME, THE FUEL GAS VENT VALVES OPENED, BUT THE FUEL GAS ISOLATION VALVES, HV-1014 AND HV-1036 FAILED TO CLOSE. THE ON-CALL TECHNICIAN ARRIVED AT THE STATION AT 16:15 AND DISCOVERED GAS VENTING THROUGH THE FUEL GAS VENT VALVES. AT 16:25 THE FUEL GAS VENT VALVES WERE MANUALLY CLOSED. THE STATION WAS RESTORED TO SERVICE AT 01:15 12/01/2013.
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.