STINGRAY PIPELINE COMPANY, LLC

gas_transmission Incident —

Incident Information

Report Date
OperatorSTINGRAY PIPELINE COMPANY, LLC
Commodity—
Pipeline Typegas_transmission

Location

State
Coordinates28.31472, -93.25278

Cause

CauseCORROSION FAILURE
Subcause—

Casualties

Fatalities0
Injuries0

Costs

Property Damage
Lost Commodity
Public/Private Damage
Emergency Response
Environmental Remediation
Other Costs

Location Map

Incident Narrative

ON 2/1/2024 AT APPROXIMATELY 22:15, MSU PORT ARTHUR CALLED ABOUT A SHEEN IN WC 551 NEAR THE STINGRAY PIPELINE. THE LINE WAS ALREADY SHUT IN AND PIPELINE VALVES REMAINED CLOSED. ON 2/2/2024 A SCHEDULED OVERFLIGHT CONFIRMED THE LEAK TO ON THE STINGRAY 1004C-100 30-INCH LINE. A SUPPLEMENTAL REPORT WILL BE SUBMITTED ONCE A CAUSE HAS BEEN DETERMINED. UPDATE 04/23/24: ' LEAK 7 DISCOVERED ON 2/2/24 ' LINE PRESSURE WAS LOWERED FROM 125-150PSIG TO BELOW BOTTOM PRESSURE TO STOP LEAK ' DSV DEPLOYMENT WAS DELAYED DUE TO OTHER COMMITMENTS AND WEATHER CONDITIONS ' ONCE DSV WAS AVAILABLE LINE PRESSURE WAS INCREASED IN ORDER TO LOCATE LEAK 7 ' 2X DAILY OVERFLIGHTS NOTED SEPARATE SHEENS AND AREA OF SURFACE BUBBLES AFTER PRESSURE WAS INCREASED. O 3 SHEENS O 1 AREA OF BUBBLES ' DSV CREW POSITIVELY IDENTIFIED LEAK 7 ' PRESSURE WAS PULLED DOWN BELOW 60 PSIG TO STOP OTHER 4 LEAKS O THESE 4 ADDITIONAL LEAKS HAVE NOT BEEN POSITIVELY LOCATED O SHEENS ARE SHRINKING O OVERFLIGHTS CONTINUE ' CLAMP CURRENTLY BEING INSTALLED ON LEAK 7 ' AFTER LEAK 7 REPAIR IS COMPLETE ADDITIONAL LEAKS WILL BE EVALUATED AND FUTURE USE OF LINE TO BE DETERMINED ' PRESSURE WILL CONTINUE TO BE MAINTAINED BELOW BOTTOM PRESSURE UPDATE 04/24/24: ' DSV COMPLETED INSTALLATION OF FIRST CLAMP AT 00:38 ' LEAK WAS DUE TO INTERNAL CORROSION ' TOTAL VOLUME RELEASED SINCE START OF INCIDENT 7.9 BBLS

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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