SOUTHERN NATURAL GAS CO
gas_transmission Incident — — November 28, 2016
Incident Information
| Incident Date | November 28, 2016 |
| Operator | SOUTHERN NATURAL GAS CO |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 33.06136, -83.05487 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | OTHER EQUIPMENT FAILURE |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $6,000 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
KINDER MORGAN SOUTHERN NATURAL GAS (SNG) COMPANY GAS CONTROL PERSONNEL RECEIVED A UNIT MALFUNCTION ALARM FOR HALL GATE COMPRESSOR STATION (BALDWIN COUNTY, GA) ON NOVEMBER 28, 2016. UPON ARRIVAL AT THE STATION BY LOCAL SNG OPERATIONS EMPLOYEE, IT WAS DETERMINED THAT GAS WAS BLOWING THROUGH THE SUCTION VALVE OF UNIT NO. 3, RELEASING SAFELY THROUGH THE UNIT VENT VALVE AND OUT THE STATION'S BLOWDOWN PIPING. EMPLOYEE ISOLATED THE SOURCE AND STOPPED THE NATURAL GAS RELEASE. INVESTIGATION RESULTED IN THE PROBABLE CAUSE BEING FAILURE OF THE SEAT FOR THE PILOT IN A SOLENOID THAT CAUSED UNIT NO. 3 SUCTION VALVE TO OPEN, RELEASING GAS. A CONTRIBUTING FACTOR TO THE SOLENOID SEAT FAILURE IS LIKELY DEBRIS THAT GOT INTO THE SYSTEM. VERY SMALL PARTICLES, LESS THAN 25 MICRONS, CAN GET THROUGH THE FILTER AND CAUSE FAILURE/LEAKAGE.
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.