ONEOK NGL PIPELINE, LLC
hazardous_liquid Incident —
Incident Information
| Report Date | — |
| Operator | ONEOK NGL PIPELINE, LLC |
| Commodity | — |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 32.60333, -98.11472 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
AT APPROXIMATELY 18:57 ON 7/22/2015 A ONEOK EMPLOYEE CONDUCTING RIGHT OF WAY CLEARING ACTIVITIES DISCOVERED DEAD VEGETATION ON THE ONEOK 14"" WTLPG PIPELINE EASEMENT AT MILE POST 52. UPON FURTHER INVESTIGATION THE EMPLOYEE DETERMINED A PRESENCE OF HYDROCARBONS IN THE SOIL AND CONTACTED THE PIPELINE SUPERVISOR. THE PIPELINE SUPERVISOR ALONG WITH THE ONEOK PIPELINE CONTROL CENTER IMMEDIATELY BEGAN REDUCING PRESSURE ON THE PIPELINE AND THE 13 MILE SECTION OF PIPELINE CONTAINING THE SUSPECTED LEAK WAS ISOLATED AND REMOVED FROM SERVICE. NITROGEN WAS USED TO PURGE THE HYDROCARBONS FROM THE ISOLATED SEGMENT. ONCE PURGED, THE SUSPECTED LEAK SITE WAS EXCAVATED AND IT WAS DETERMINED A WELD, OVER A STUD BOLT, ON A LEAK CLAMP INSTALLED IN 2010 HAD A PIN HOLE ALLOWING HYDROCARBONS TO BE RELEASED. A 40.1' SECTION OF PIPE CONTAINING THE PREVIOUSLY INSTALLED LEAK CLAMP WAS REMOVED FROM THE PIPELINE AND NEW PRE-TESTED PIPE WAS INSTALLED. THE PIPELINE WAS RETURNED TO SERVICE AT 23:00 HRS. ON JULY 25, 2015.
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.