COLUMBIA GULF TRANSMISSION, LLC
gas_transmission Incident — — May 18, 2018
Incident Information
| Incident Date | May 18, 2018 |
| Operator | COLUMBIA GULF TRANSMISSION, LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 32.41549, -91.48971 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $500 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON MAY 18TH, 2018, DELHI COMPRESSOR STATION (CS) WAS SUBJECT TO AN UNINTENTIONAL RELEASE OF NATURAL GAS (MATERIAL) RESULTING IN MATERIAL LOSS EXCEEDING 3,000 MCF. DELHI IS A TRANSMISSION CS THAT IS MAINTAINED BY COLUMBIA GULF TRANSMISSION, LLC (TRANSCANADA) AND IS LOCATED IN RICHLAND PARISH, NEAR THE TOWN OF DELHI, LOUISIANA. AT APPROXIMATELY 02:07 CST TRANSCANADA'S MONITORING CENTER RECEIVED A NOTIFICATION FROM THE PUBLIC OF A POTENTIAL RELEASE OF MATERIAL AT DELHI CS. ONCE OPERATIONS PERSONNEL ARRIVED ON-SITE AT APPROXIMATELY 02:20 CST, THE UNINTENDED RELEASE OF MATERIAL WAS IDENTIFIED AND ISOLATED AT APPROXIMATELY AT 02:24 CST. THE MATERIAL LOSS CALCULATIONS WERE DETERMINED TO BE GREATER THAN 3,000 MCF, HENCE, THE EVENT WAS REPORTED TO THE NATIONAL RESPONSE CENTER (NRC). THE INVESTIGATION DETERMINED THAT GREASE AND DEBRIS IN THE SUPPLY/SENSING LINE AND FILTER SCREENS OF THE PILOT RELIEF VALVE CAUSED THE UNINTENTIONAL OPERATION OF THE RELIEF VALVE. A 48-HR. UPDATE WAS CALLED-IN TO THE NRC WHERE THE UPDATE REPORT NO. WAS 1212599.
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.