MARATHON PIPE LINE LLC
hazardous_liquid Incident — — August 22, 2012
Incident Information
| Incident Date | August 22, 2012 |
| Operator | MARATHON PIPE LINE LLC |
| Commodity | CRUDE OIL |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 38.85160, -90.08732 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | EQUIPMENT NOT INSTALLED PROPERLY |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $476,000 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON AUGUST 1, 2012, LOCAL OPERATING PERSONNEL NOTICED A SMALL AMOUNT OF CRUDE OIL (0.013 GALLONS) ON THE CHIME OF TANK 1262 DURING A ROUTINE FACILITY CHECK. ON AUGUST 22, FURTHER INVESTIGATION REVEALED CRUDE OIL IN ONE OF THREE SOIL SAMPLES TAKEN WITHIN THE TANK DIKE, LAB ANALYSIS DETERMINED THE CRUDE TO BE FRESH. SUBSEQUENT SOIL SAMPLES HAVE NOT SHOWN INDICATIONS OF FRESH CRUDE. THE ORIGINAL ESTIMATED RELEASE VOLUME WAS CALCULATED USING DIMENSIONS OF IMPACTED SOIL FOUND VIA SOIL BORINGS. ANALYSIS OF IMPACTED SOILS LED TO A REVISED ESTIMATED RELEASE VOLUME. ALL IMPACTED SOIL WAS REMOVED AND DISPOSED. IN ATTEMPTS TO DISCOVER A RELEASE SOURCE, THE TANK WAS EMPTIED, TAKEN OUT OF SERVICE, AND CLEANED. THE TANK THEN UNDERWENT AN API 653 INSPECTION, AN MFL FLOOR SCAN, AND THE CRITICAL ZONE AND FLOOR WELDS WERE BLASTED AND NON-DESTRUCTIVELY TESTED. DURING THE VACUUM BOX TESTING ON SEPTEMBER 18, A SMALL HOLE WAS FOUND IN THE WELD OF A PATCH PLATE ON THE TANK FLOOR. THE CAUSE OF THE HOLE WAS DETERMINED TO BE A LACK OF FUSION OF THE WELD DUE TO INEFFECTIVE INSPECTION PROCEDURES IN 1992."
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.