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MAGELLAN PIPELINE COMPANY, LP

hazardous_liquid Incident —

Incident Information

Report Date—
OperatorMAGELLAN PIPELINE COMPANY, LP
Commodity—
Pipeline Typehazardous_liquid

Location

State
Coordinates32.06432, -96.86338

Cause

CauseEQUIPMENT FAILURE
Subcause—

Casualties

Fatalities0
Injuries0

Costs

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

Location Map

Incident Narrative

AT 1730 A CONTRACT INSPECTOR WORKING IN THE AREA SAW PRODUCT START TO SPRAY FROM A FLANGE THAT WAS JUST UPSTREAM OF THE PIG TRAP LEADING TO THE OUTBOUND PIPELINE TO HEARNE, TEXAS. THE CONTRACTOR IMMEDIATELY CALLED ONE OF THE TECHNICIANS TO REPORT THAT WE HAD A LEAK. THE TECHNICIAN CALLED OPS CONTROL AT 1731 AND TOLD THEM TO SHUTDOWN THE HEARNE LINE BECAUSE OF A REPORTED RELEASE. OPS CONTROL DID SEE THE SUDDEN DROP IN PRESSURE AND THE CONTROLLER IMMEDIATELY SHUTDOWN THE LINE AND BEGAN MAKING NOTIFICATIONS. LOCAL EMPLOYEES WERE NOTIFIED TO RESPOND AND THE FIRST TECHNICIAN ARRIVED ON SITE AT 1805. THE RESPONDERS TOOK APPROPRIATE ACTIONS SUCH AS MOBILIZING THE EMERGENCY TRAILER AND PLACING ABSORBENT BOOMS AND PADS IN SPECIFIC AREAS. VAC TRUCKS WHERE REQUESTED TO COLLECT PRODUCT AND ARRIVED AT 1850 AND TAS ENVIRONMENTAL WAS CONTACTED FOR SITE CLEANUP AND REMEDIATION. THE REMAINING PRODUCT WAS DRAINED FROM THE LINE AND THE FAILED INSULATING GASKET WAS REMOVED AND REPAIRS WERE MADE. IT WAS DISCOVERED THAT THE GASKET WAS NOT THE STANDARD GASKET THAT MAGELLAN USES TODAY. A NEW STANDARD INSULATING GASKET WAS INSTALLED AND MAGELLAN COMPLETED A VISUAL INSPECTION OF THE FACILITY TO DETERMINE IF THERE WERE ADDITIONAL NON-STANDARD GASKETS IN THE SYSTEM. AS A RESULT OF THE REVIEW THERE WAS ONLY ONE INSULATING GASKET THAT WE COULD NOT CONFIRM IF IT MET OUT CURRENT STANDARD AND THEREFORE WE HAVE REPLACED THIS GASKET AS WELL. MAGELLAN WILL CONTINUE TO FURTHER INVESTIGATE THE CAUSE OF THE GASKET FAILURE. THE ANALYSIS OF THE GASKET CONCLUDED THAT THE GASKET WAS A RUBBER COATED PHENOLIC GASKET. THERE WERE NO IDENTIFIABLE MANUFACTURER MARKINGS ON THE GASKET SO THEY WERE UNABLE TO IDENTIFY THE MANUFACTURER. THE GASKET HAD RADIAL CRACKING INDICATING THAT IT WAS OVER-COMPRESSED. THERE WERE ALSO INDICATION THAT IT MIGHT NOT HAVE BEEN CENTERED PROPERLY WHEN INSTALLED MADE EVIDENT BY MORE DEFINED IMPRESSIONS ON ONE SIDE OF THE GASKET VERSUS THE OTHER. THE GASKET ALSO EXHIBITED SIGNS OF CHEMICAL DEGRADATION POSSIBLY FROM NON-COMPATIBILITY OF PRODUCTS BEING SHIPPED IN THE LINE.

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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