MAGELLAN PIPELINE COMPANY, LP

Incident Narrative

A REPORT OF GASOLINE ODOR WAS REPORTED TO MAGELLAN OPERATIONS CONTROL AT 18:39 ON MARCH 21 IN THE PROXIMITY OF MP 111 ON THE MAGELLAN #1-6 PIPELINE FROM FARGO TO GRAND FORKS, ND. OPERATIONS CONTROL IMMEDIATELY IMPLEMENTED MAGELLAN'S INVESTIGATION EVENT PROCEDURE SHUTTING DOWN THE LINE, CLOSING REMOTE OPERATED VALVES ON EITHER SIDE OF THE LOCATION, AND ALSO NOTIFIED MAGELLAN PERSONNEL IN THE AREA TO RESPOND AND INVESTIGATE. MAGELLAN PERSONNEL IDENTIFIED AN AREA OF CONCERN AND INITIATED EXCAVATION ACTIVITIES TO FURTHER INVESTIGATE. AT 04:56AM ON TUESDAY, MARCH 22 MAGELLAN PERSONNEL DISCOVERED A PINHOLE IN THE LONGITUDINAL PIPE SEAM. THE LINE WAS IN GASOLINE SERVICE AT THE TIME, SO A PLIDCO FITTING WAS INSTALLED OVER THE LEAK AS A TEMPORARY MEASURE. UPON RECEIVING RESTART PLAN APPROVAL FROM THE PHMSA CENTRAL REGION, THE GASOLINE IN THE PIPELINE WAS DISPLACED WITH A DIESEL BATCH. ONCE THE LINE WAS IN DIESEL SERVICE THE TEMPORARY REPAIR WAS REMOVED AND A PERMANENT REPAIR MADE BY INSTALLING NEW, PRE-TESTED PIPE IN ACCORDANCE WITH A REPAIR PLAN APPROVED BY THE PHMSA CENTRAL REGION. THE LINE WAS RETURNED TO SERVICE AT A 20% PRESSURE REDUCTION, AND THE SPECIMEN CONTAINING THE DEFECT WAS SENT TO A METALLURGICAL LABORATORY FOR ANALYSIS WHICH DETERMINED THE FAILURE WAS DUE TO A MANUFACTURING DEFECT CALLED A PENETRATOR IN THE ERW SEAM. APPROXIMATELY 1200 CUBIC YARDS OF CONTAMINATED SOIL WAS REMEDIATED. THIS SUPPLEMENTAL-FINAL REPORT WAS FILED TO UPDATE THE CAUSE AND COST INFORMATION.