DAPL-ETCO OPERATIONS MANAGEMENT, LLC
hazardous_liquid Incident — — May 4, 2017
Incident Information
| Incident Date | May 4, 2017 |
| Operator | DAPL-ETCO OPERATIONS MANAGEMENT, LLC |
| Commodity | CRUDE OIL |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 35.40317, -89.52819 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | FAILURE OF EQUIPMENT BODY (EXCEPT PUMP), TANK PLATE, OR OTHER MATERIAL |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $1,700 |
| Emergency Response | $12,000 |
| Other Costs | $0 |
Location Map
Incident Narrative
AT APPROXIMATELY 13:30 ON MAY 4, 2017 OPERATOR PERSONNEL WERE PERFORMING A STATION CHECK DURING COMMISSIONING PROCESS OF THE ETCO PIPELINE. A RELEASE OF APPROXIMATELY 1/2 BARREL WAS DISCOVERED DUE TO APPARENT BODY FAILURE OF TWO 4 INCH BALL VALVES. BOTH VALVES WERE CLOSED AND THE RELEASE STOPPED FROM ONE BUT THE OTHER CONTINUED TO WEEP. THE SEGMENT OF PIPE WAS ISOLATED, THE RELEASE CONTAINED AND THE VALVES REMOVED AND REPLACED. CONTAMINATED SOIL WAS REMOVED FOR PROPER DISPOSAL. UPON EXAMINATION IT WAS DETERMINED THAT RESIDUAL WATER LIKELY FROM HYDROSTATIC PRESSURE TESTING OF THE PIPELINE REMAINED ENTRAPPED IN THE VALVES AND FREEZING TEMPERATURES CAUSED EXPANSION INSIDE THE VALVE LEADING TO THE BODY FAILURE.
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.