ALYESKA PIPELINE SERVICE CO

Incident Narrative

"NOTE FOR PART D ITEM 8 REGARDING ESTIMATED COST TO OPERATOR: THE SUM OF $13,500,000 IS THE ESTIMATED TOTAL COST OF THE RESPONSE, WHICH WE HAVE LISTED AS 8.F ""ESTIMATED OTHER COSTS"". THIS REFLECTS THE COSTS TO ALYESKA AS OF FEBRUARY 6, 2011. THIS INCLUDES THE COST OF REPAIR AND EMERGENCY RESPONSE, AS WELL AS POST LEAK REPAIR STARTUP ACTIVITIES AND MONITORING, AGENCY OVERSIGHT AND STAKEHOLDER COMMUNICATIONS. THESE COSTS WERE NOT TRACKED SEPARATELY FOR REPAIR AND RESPONSE. NOTE FOR PART A ITEM 14.B REGARDING DATE AND TIME OF PIPELINE RESTART: THE PIPELINE RESTART DATE AND TIME REFLECTED IN ITEM 14.B OF THIS REPORT REFLECT THE SECOND RESTART THAT OCCURRED AS A RESULT OF THIS LEAK. AFTER INITIALLY BEING SHUTDOWN FOR ABOUT 3 1/2 DAYS FROM JANUARY 8 THROUGH JANUARY 11, 2011, THE PIPELINE WAS TEMPORARILY RESTARTED FROM JANUARY 11 THROUGH JUST AFTER MIDNIGHT ON JANUARY 15, 2011. THE VOLUME REPORTED IN PART A, ITEM NO. 9, ""ESTIMATED VOLUME OF COMMODITY RELEASED UNINTENTIONALLY"" OF 42 BARRELS, REFLECTS THE VOLUME THAT WAS RELEASED AND COLLECTED DURING THE INITIAL 3 1/2 DAY SHUTDOWN. THIS INTERIM RESTART WAS CONDUCTED WITH THE CONCURRENCE OF THE UNIFIED COMMAND (CONSISTING OF THE FEDERAL AND STATE ON-SCENE COORDINATORS), DUE TO CRITICAL ARCTIC CONDITIONS ON THE NORTH SLOPE AND THROUGHOUT THE TRANS-ALASKA PIPELINE SYSTEM. THIS INTERIM OPERATION RESULTED IN ALYESKA CAPTURING 266 BARRELS THAT WERE RELEASED INTO A CONTAINMENT BOX; AND LISTED ON THIS REPORT IN PART A, ITEM NO. 10 AS THE ""ESTIMATED VOLUME OF INTENTIONAL AND/OR CONTROLLED RELEASE/BLOWDOWN"". THIS INTERIM RESTART WAS CONDUCTED WITH A CONTAINMENT BOX SPECIFICALLY DESIGNED TO ALLOW ALYESKA TO CAPTURE THE SLOW, CONTINUOUS LEAK THAT OCCURRED DURING THIS PERIOD. ALYESKA PIPELINE SERVICE COMPANY, PUMP STATION 1 BOOSTER PUMP SPILL NARRATIVE INCIDENT DATE: JANUARY 8, 2011 ON JANUARY 8, 2011 AT APPROXIMATELY 8:15 A.M., A SPILL WAS DISCOVERED IN THE BASEMENT OF THE BOOSTER PUMP BUILDING AT PUMP STATION 1. THE OPERATIONS CONTROL CENTER SHUTDOWN THE PIPELINE AT 8:50 A.M. PUMP STATION 1 PERSONNEL ISOLATED THE BOOSTER PUMPS. NORTH SLOPE PRODUCERS ARE PRORATED TO 5% PRODUCTION. TAPS WAS RESTARTED FOR AN INTERIM PERIOD, WITH REGULATORY APPROVAL, AT 9:03 PM ON JANUARY 11, 2011. AT 10:00 PM ON JANUARY 11, 2011 THE 5 PERCENT PRODUCER PRORATION WAS LIFTED. DURING THIS THREE DAY PERIOD, WORK WAS ONGOING TO DESIGN AND BUILD A BY-PASS LINE TO ALLOW ISOLATION OF THE LEAKING BOOSTER PUMP LINE. BY JANUARY 14, 2011, ONE OF THE CLEANING PIGS HAD BEEN CAPTURED AT PS08, AND THE OTHER AT VMT AND WERE NOW SAFELY OUT OF THE MAINLINE. SHORTLY AFTER MIDNIGHT ON JANUARY 15, 2011, THE PIPELINE WAS SHUT DOWN FOR AN EXPECTED 36 HOUR PERIOD TO INSTALL THE BOOSTER PUMP BYPASS LINE. DURING THE PERIOD WHEN THE LINE WAS SHUT DOWN, THE LEAK IN THE BOOSTER PUMP BASEMENT CEASED TO FLOW. DURING THE INTERIM STARTUP, WITH THE LINES PRESSURIZED, THE LEAK RESUMED, BUT WAS CAPTURED IN THE CONTAINMENT BOX AND TRANSFERRED TO VACUUM TRUCKS. ON JANUARY 17, 2011 AT 3:40 A.M., THE BYPASS LINE INSTALLATION WAS COMPLETE. CREWS BEGAN INTRODUCING CRUDE TO THE PS1 PIPING SYSTEM AND STARTED REFILL OPERATIONS JUST BEFORE 5:00 A.M."