"ONEOK NGL PIPELINE, LLC"

hazardous_liquid Incident — — May 2, 2025

Incident Information

Incident DateMay 2, 2025
Operator"ONEOK NGL PIPELINE, LLC"
CommodityHVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBI
Pipeline Typehazardous_liquid

Location

State
Coordinates36.77511, -97.76291

Cause

CauseEQUIPMENT FAILURE
SubcauseMALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Casualties

Fatalities0
Injuries0

Costs

Property Damage$780
Emergency Response$600
Other Costs$0

Location Map

Incident Narrative

"AT 4:25AM ON MAY 2, 2025, PIPELINE CONTROL RECEIVED A CALL FROM A ONEOK PLANT OPERATOR INDICATING A RELEASE FROM A PSV ON THE ARBUCKLE II PROVER. AT 4:53AM A ONEOK PIPELINE OPERATOR ISOLATED THE PSV STOPPING THE RELEASE. THE CAUSE OF THE PSV FAILURE IS UNDER INVESTIGATION SUPPLEMENTAL- INVESTIGATION RESULTS INDICATE THE PSV RELEASED AT 1,329 PSI. IT FAILED TO RE-SEAT DUE TO DAMAGE TO THE STEM AND SEALING SURFACE OF THE PSV AND CONTINUED TO RELEASE UNTIL MANUALLY ISOLATED."

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.

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