ENTERPRISE PRODUCTS OPERATING LLC

Incident Narrative

THE DOWNSTREAM PUMP CLOSEST TO THE FAILURE AUTOMATICALLY SHUTDOWN ON UNDER SPEED, AND THE OPERATIONS CONTROLLER DETECTED A PRESSURE DROP AT THE SAME PUMP STATION. THE CONTROLLER SHUTDOWN UPSTREAM PUMP STATIONS AND CLOSED UPSTREAM BLOCK VALVES, AND AFTER DOWNSTREAM PUMP STATIONS PULLED DOWN THE LINE PRESSURE, THE MOV AT THE CLOSEST DOWNSTREAM PUMP STATION WAS CLOSED TO ISOLATE THE FAILED PIPELINE SEGMENT. THE CONTROLLER NOTIFIED COMPANY PERSONNEL AND COUNTY SHERIFF OFFICES ON BOTH SIDES OF THE RIVER. THE CONTROLLER THEN BLOCKED IN AND BLED DOWN THE PRESSURE ON THE SECOND COMPANY OPERATED PIPELINE IN THE ROW. WHEN FIELD OPERATIONS PERSONNEL ARRIVED AT THE RIVER BETWEEN 3:00 AND 4:00 AM, PRODUCT COULD NOT BE SEEN OR SMELLED ON THE WEST SIDE, AND PRODUCT COULD NOT BE SEEN BUT COULD BE SMELLED IN THE VICINITY OF AERIAL MARKER 271 ON THE EAST SIDE OF THE RIVER. BOTH THE FAILED LINE, AND THE LINE NEXT TO IT OPERATED BY THE OPERATOR REMAIN SHUTDOWN UNDER CORRECTIVE ACTION ORDER, CF NO. 3-2011-5009H. DIVERS LOCATED A BREAK IN THE FAILED LINE ON AUGUST 31, BUT THE FAILURE SITE IS STILL UNDERWATER AND INACCESSIBLE AT THE TIME OF THIS REPORT. THE PRODUCT RELEASED WAS NATURAL GASOLINE, BUT NO RELEASED PRODUCT HAS BEEN DETECTED OTHER THAN AN ODOR ON FIRST ARRIVAL AT THE EAST SIDE OF THE RIVER. THE INITIAL VOLUME REPORTED WAS THE LINE VOLUME ESTIMATED BETWEEN BLOCK VALVES. MOST OF THE PRODUCT TRAPPED IN ISOLATED PIPE HAS SINCE BEEN DISPLACED FROM THE LINE AND WAS METERED. THE DISPLACED VOLUME WAS SUBTRACTED FROM THE LINE FILL VOLUME, REDUCING THE ESTIMATED UNINTENDED RELEASE VOLUME. PRODUCT IN THE PIPE NEAR THE WEST BANK OF THE RIVER IS STILL NOT COMPLETELY DISPLACED. SUPPLEMENT 6-1-12 THE RED WAS RESTARTED ON OCTOBER 22, 2011. INSTALLATION OF THE RED LINES ACCORDING TO THE APPROVED REPAIR PLAN WAS COMPLETED ON JANUARY 16, 2012 WITH THE COMPLETION OF THE MAIN LINE VALVE MOTOR OPERATOR WORK THE AMOUNT OF NATURAL GASOLINE DISPLACED FROM THE RED LINE ON SEPTEMBER 7, 2011 WAS METERED AND MEASURED 2952.3 BBL. APPROXIMATELY 507 GALLONS OF ADDITIONAL NATURAL GASOLINE WAS DISPLACED SEPTEMBER 28, 2011 AND AN ADDITIONAL 68 GALLONS OF PRODUCT WAS DISPLACED FROM THE RED LINE ON OCTOBER 8, 2011. PIPE SEGMENTS FROM BOTH SIDES OF THE RED LINE BREAK HAVE BEEN REMOVED FROM UNDER WATER. DISPLACEMENT OF RESIDUAL PRODUCT WITH NITROGEN WAS COMPLETED ON APRIL 11, 2012. THE RECOVERED AMOUNT OF PRODUCT FROM THIS DISPLACEMENT WAS 129 BBLS. THE TOTAL DISPLACEMENT OF NATURAL GASOLINE TO DATE FROM THE PIPELINE REDUCES THE ESTIMATED RELEASE VOLUME TO 675 BBLS. AFTER THE DISPLACEMENT THE REMAINING SECTIONS OF THE AFFECTED PIPE THAT COULD NOT BE REMOVED WERE EITHER CAPPED AND ABANDONED OR CAPPED AND PLACED IN AN IDLE STATE ACCORDING TO THE SUBMITTED REPAIR PLAN. SUPPLEMENT/FINAL 8-7-12 THE METALLURGICAL REPORT WAS COMPLETED ON JULY 2, 2012. THERE WERE NO DEFECTS ATTRIBUTED TO ORGINAL CONSTRUCTION/INSTALLATION. THE FAILURE ANALYSIS INDICATED THAT THE FAILURE OCCURRED BECAUSE OF THE STRESSES ASSOCIATED WITH THE FLOODING CONDITION.