ENBRIDGE OFFSHORE (GAS GATHERING) L.L.C.
gas_transmission Incident — — January 4, 2015
Incident Information
| Incident Date | January 4, 2015 |
| Operator | ENBRIDGE OFFSHORE (GAS GATHERING) L.L.C. |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 28.31571, -91.90941 |
Cause
| Cause | CORROSION FAILURE |
| Subcause | EXTERNAL CORROSION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $60,000 |
| Emergency Response | $405,000 |
| Other Costs | $10,000 |
Location Map
Incident Narrative
ON 1-4-15 1706 HRS. ' ENBRIDGE GAS CONTROL RECEIVED A PHONE CALL FROM TRUNKLINE GAS / SEA ROBIN CONTROL CENTER REGARDING A 2' BYPASS VALVE THAT HAS A LEAK UNDERNEATH THE PLATFORM AND IS VENTING GAS TO THE ATMOSPHERE. ENB. GAS CONTROL NOTIFIED ENB. OPERATIONS OF THE SITUATION ON SMI-128. OPERATION CONFIRMED WITH THE SMI 128 PLATFORM OPERATORS THAT THERE WAS A LEAK ON THE 2' BYPASS LINE AROUND THE16' ESD VALVE ON INCOMING RISER OWNED BY ENBRIDGE. 1-5-2015 ' ENBRIDGE REPRESENTATIVE DEPARTED FOR SMI-128 FROM HOUMA VIA HELICOPTER. ARRIVED AND CONFIRMED THE LEAK AND LOCATION. REVIEWED WITH PLATFORM OPERATOR THE PLAN FOR ISOLATION AND REPAIR 1-6-2015 ' 0345 HRS. DIVE VESSEL DEPARTED PORT WITH DIVE CREW FOR SSV SHUT IN ' 2300 HRS. DIVE VESSEL ARRIVED ON LOCATION AND DROPPED ANCHORS AND PROCEEDED WITH VALVE CLOSURE 1-7-2015 ' ~0700 HRS. 16' SSV WAS CLOSED AND PRESSURE WAS REDUCED ON THE 16' PIPELINE. ONCE PRESSURE WAS REDUCED THE PIPELINE WAS SECURED AND PURGED WITH NITROGEN. 1-8-2015 ' CONSTRUCTION CREW REMOVED 2' PIPING AND REPLACED WITH NEW PIPING. REPAIRS WERE COMPLETED, X-RAY WAS COMPLETED ON FIELD WELD AND PIPELINE WAS TURNED OVER TO OPERATION FOR RE-PRESSURIZATION. 1-9-2015 ' CONTINUE TO REPRESSURE 16' PIPELINE TO LINE PRESSURE. 1-12-2015 ' LINE REPRESSURED WAITING ON DIVE VESSEL 1-14-2015 ' 1415 DIVERS ON LOCATION AND OPENING VALVE ONCE VALVE WAS FULLY OPENED PIPELINE WAS BACK IN SERVICE
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.