SOUTHERN STAR CENTRAL GAS PIPELINE, INC
gas_transmission Incident — — February 10, 2011
Incident Information
| Incident Date | February 10, 2011 |
| Operator | SOUTHERN STAR CENTRAL GAS PIPELINE, INC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 38.17241, -95.29946 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
AT 22:40 ON 2/10/2011 GAS CONTROL SAW PRESSURE DROPPING ON THE OTTAWA 20"" (LINE DS) AND THE GRABHAM-WELDA 30"" (LINE D). LINE PRESSURE BEFORE THE LOSS WAS 632 PSIG, WITH AN MAOP OF 690 PSIG. GAS CONTROL CONTACTED DISTRICT PERSONNEL AT 22:50 TO GO TO WELDA STATION TO INVESTIGATE. DISTRICT OPERATORS CALLED GAS CONTROL AT 00:10 ON 02/11/2011 AND ASKED THAT THEY SHUT GATE #7. IMMEDIATELY THE GRABHAM-WELDA 30"" STARTED GAINING PRESSURE SO THEY KNEW THE PROBLEM WAS ON THE OTTAWA 20"". UPON ARRIVAL AT WELDA STATION DISTRICT OPERATORS HEARD THE R.V. BLOWING. KNOWING THE PRESSURE WAS BELOW MAOP THEY SHUT THE VALVE BELOW THE R.V. WHICH SHUT OFF THE BLOWING GAS AT APPROXIMATELY 01:25 ON 02/11/2011. THE R.V. WAS THAWED OUT WHICH ALLOWED IT TO RESEAL AND THEN THE VALVE WAS OPENED PUTTING THE R.V. BACK INTO SERVICE. THE SET POINT FOR THE R.V. WAS TESTED AND THE R.V. HAD ALL MOISTURE AND OIL BLOWN OUT FROM THE VENT ON THE PILOT. THE PILOT WAS REMOVED AND TAKEN TO THE SHOP TO CLEAN. THE PILOT WAS TAKEN APART AND FOUND MOISTURE, OIL AND DIRT INSIDE THE PILOT. THE PILOT WAS CLEANED AND PUT BACK INTO SERVICE AND THE SET POINT WAS AGAIN CHECKED AND ADJUSTED TO 690 PSIG.
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.