WILLIAMS FIELD SERVICES

Incident Narrative

8:14 A.M. PIPELINE CONTROL RECEIVED GAS DETECTION AT PUMP STATION, STATION WENT INTO EMERGENCY SHUTDOWN. 9:18 A.M. OPERATIONS EMPLOYEE WHEN ABOUT 3/4 OF MILE FROM SITE AND NOTICED A VAPOR CLOUD IN STATION APPROX 10 FEET HIGH BY 8 FEET WIDE DRIFTING SOUTH, CALLED PIPELINE CONTROL OF EVENT, SECURED ROAD INTO STATION WITH RED DANGER TAPE. 09:27 A.M. DECLARED IT AN EMERGENCY EVENT AND ACTIVATED THE EMERGENCY RESPONSE PLAN, CALL 911 TO GET HELP SECURING ACCESS TO ROAD SOUTH OF STATION. SET UP INCIDENT COMMAND APPOINTED IC AND SAFETY OFFICER 09:35 A.M. CALLED ES&H TO NOTIFY THEM OF RELEASE 9:42 A.M. CALLED PIPELINE CONTROL ON STATUS UPDATE OF PRESSURE 170 PSI SUCTION SIDE, 917 DISCHARGE SIDE CHECK VALVE WAS HOLDING AND STATION VALVES WERE CLOSED WHEN GAS DETECTION SHUT STATION DOWN. 10:35 A.M. OP/TECHS WALKED FOR A CLOSER LOOK, AND FOUND THE STRAINER WAS LEAKING, VAPOR CLOUD HAD DIMINISHED. DID A PLAN TO GO INTO SITE AND ISOLATE STRAINER ON INLET SIDE 10:48 A.M. CLOSED STRAINER INLET VALVE, NO FLAMMABLE VAPORS DETECTED DURING CLOSURE 10:53 A.M. UPDATE OF PRESSURE AT PC 166 PSI 11:00 A.M. BLEW DOWN SUCTION PIPING TO KNOCKOUT DRUM 11:18 A.M. CLOSED OUTLET VALVE OF STRAINER. 11:27 A.M. PIPELINE CONTROL SAW A PRESSURE OF 133 PSI 11:28 A.M. CLOSED BLOWDOWN VALVE OF HEADER AND OPENED BLOWDOWN OF STRAINER 11:58 A.M. EMERGENCY EVENT HAS BEEN TERMINATED. 12:00 P.M. STRAINER IS COMPLETELY ISOLATED AND BLOWN DOWN 12:30 P.M. OPENED THE STRAINER AND FOUND THE O-RING WAS BROKE CLEANED THE THREADS OF ENCLOSURE 1:45 P.M. CLOSED UP THE STRAINER AND WAITED FOR FURTHER INSTRUCTION STRAINER IS CURRENTLY BYPASSED UNTIL FURTHER INVESTIGATION HAS BEEN COMPLETED.