NUSTAR PIPELINE OPERATING PARTNERSHIP L.P.

hazardous_liquid Incident — — June 12, 2025

Incident Information

Incident DateJune 12, 2025
OperatorNUSTAR PIPELINE OPERATING PARTNERSHIP L.P.
CommodityHVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBI
Pipeline Typehazardous_liquid

Location

State
Coordinates32.87786, -92.55681

Cause

CauseEQUIPMENT FAILURE
SubcauseMALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Casualties

Fatalities0
Injuries0

Costs

Property Damage$21,194
Emergency Response$0
Other Costs$0

Location Map

Incident Narrative

"AT APPROXIMATELY 09:00 ON 12JUN25, SUNOCO LOCAL OPERATIONS PERSONNEL, WHILE MAKING ROUNDS AT ITS STERLINGTON LATERAL TIE-IN TO THE MAINLINE LOCATION, DISCOVERED A SMALL AREA ON THE MUDDY/WET SURFACE OF THE GROUND WITH SOME OCCASIONAL BUBBLING. UPON INVESTIGATION IT WAS DETERMINED TO BE AMMONIA VAPORS EMITTING FROM THE GROUND. SUNOCO MANAGEMENT WAS NOTIFIED, AND SAFETY PERSONNEL WERE NOTIFIED AT APPROXIMATELY 09:15 AND WERE ASKED TO BEGIN THE NOTIFICATION PROCESS WITH THE NATIONAL RESPONSE CENTER (NRC). SUNOCO

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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