TENNESSEE GAS PIPELINE COMPANY
gas_transmission Incident — — August 27, 2017
Incident Information
| Incident Date | August 27, 2017 |
| Operator | TENNESSEE GAS PIPELINE COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 28.70001, -96.94365 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | "VALVE LEFT OR PLACED IN WRONG POSITION, BUT NOT RESULTING IN AN OVERPRESSURE" |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $400 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON 8/24/2017, AT 2:00PM TENNESSEE GAS PIPELINE COMPANY(TGP) COMPRESSOR STATION 9 WAS SHUT DOWN AND PLACED IN BY-PASS MODE AS A PRECAUTIONARY MEASURE DUE TO HURRICANE HARVEY. THE MAINLINE AT THIS STATION WAS STILL FREE FLOWING NATURAL GAS. ON 8/27/17 AT APPROXIMATELY 9:22AM, DUE TO A POWER LOSS EVENT ASSOCIATED WITH HURRICANE HARVEY, TGP'S COMPRESSOR STATION 9 VICTORIA EXPERIENCED AN EMERGENCY SHUT DOWN(ESD) WHICH CAUSED AN ESD VALVE TO OPEN AND RELEASE NATURAL GAS TO ATMOSPHERE. THE LOCAL SHERIFF'S OFFICE CONTACTED TGP GAS CONTROL AT 9:22 AM AND INFORMED THEM OF THE GAS RELEASE EVENT. AT 9:25AM TWO ELECTRONICS AND COMMUNICATION TECHNICIANS WERE CALLED OUT AND THEY ARRIVED ON SITE AT 9:39 AM. THE TECHNICIANS DETERMINED THERE WAS NO ISSUE WITH THE STATION PRESSURE AND IT WAS FOUND TO BE BELOW MAOP THEREFORE IN CONSULTATION WITH THE AREA MANAGER IT WAS DECIDED TO CLOSE THE BLOW OFF VALVE #9-B2D. THE TECHNICIANS WALKED THE ESD SYSTEM CHECKING THE VALVES FOR PROPER POSITION ACCORDING TO THE PROCEDURE. IT WAS DETERMINED THAT A BY-PASS VALVE AROUND THE ESD VALVE #9-BD5 WAS OPEN WHICH ALLOWED THE REPORTED 17,811 MCF RELEASE OF NATURAL GAS TO THE ATMOSPHERE."
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.