"ONEOK NGL PIPELINE, LLC"
hazardous_liquid Incident — — February 7, 2019
Incident Information
| Incident Date | February 7, 2019 |
| Operator | "ONEOK NGL PIPELINE, LLC" |
| Commodity | HVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBI |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 29.85393, -94.89310 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | THREADED CONNECTION/COUPLING FAILURE |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $1,000 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON 2/07/2019, LOCAL EMPLOYEES IDENTIFIED HYDROCARBON VAPORS RELEASING FROM THE 1"" THERMAL RELIEF PIPING FOR THE FILTER INLET HEADER. THE 1"" THREADED PIPE HAD FAILED IN THE THREADS CONNECTING THE THERMAL PIPING TO THE HEADER. THE PUMP WAS SHUT DOWN AND EMPLOYEES BEGAN BLOWING DOWN THE FILTERS AND ASSOCIATED PIPING TO REPLACE THE PIPE NIPPLE. ONCE ALL HYDROCARBONS WERE REMOVED FROM FILTER VESSEL AND PIPING, THE FAILED NIPPLE WAS REMOVED AND REPLACED. ONEOK SENT THE FAILED NIPPLE OUT FOR A METALLURGICAL ANALYSIS WHICH DETERMINED THE NIPPLE HAD CRACKED IN THE THREADED PORTION OF THE NIPPLE DUE TO OVER-TORQUEING DURING INSTALLATION. THE AFFECTED PIPING HAS CURRENTLY BEEN ISOLATED FROM FLOW."
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.