MARATHON PIPE LINE LLC
hazardous_liquid Incident — — April 1, 2025
Incident Information
| Incident Date | April 1, 2025 |
| Operator | MARATHON PIPE LINE LLC |
| Commodity | HVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBI |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 31.37305, -101.78620 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | NON-THREADED CONNECTION FAILURE |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $17,720 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON APRIL 1, AN ISOLATION GASKET FAILED WHILE COMMISSIONING A NEW METER AT BENEDUM STATION. BENEDUM STATION WAS DOWN AT THE TIME OF RELEASE DUE TO THE COMMISSIONING AND CONTROLS WORK. PIPING SECTION WAS IMMEDIATELY ISOLATED AND SUBSEQUENTLY DE-PRESSURED. REPORTABLE CRITERIA WERE DETERMINED TO HAVE BEEN MET AT 14:35 ON APRIL 2ND AFTER VOLUME CALCULATIONS WERE COMPLETED. THE RELEASED COMMODITY WAS A NITROGEN/NGL MIXTURE THAT WAS PREDOMINATELY NITROGEN. THE FAILED GASKET WAS INSTALLED DURING CONSTRUCTION AND IS TO BE REPLACED. SUPPLEMENTAL UPDATE: INTERNAL INVESTIGATION REVEALED THAT THE DESIGN DID NOT IDENTIFY THE NEED FOR SUPPORT OF THE VALVE IN THE THE INTERIM PERIOD UNTIL THE FUTURE CONNECTION WOULD BE MADE. THE VALVE HAS BEEN REINSTALLED WITH APPROPRIATE SUPPORT. SUPPLEMENTAL UPDATE: QUESTION 4B DAYLIGHT SAVING IN EFFECT? CHANGED FROM ""NO"" TO ""YES"""
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.