WILLIAMS FIELD SERVICES

Incident Narrative

ON DECEMBER 11, 2019 A WILLIAMS OPERATIONS TECHNICIAN WAS PERFORMING NORMAL FACILITY ROUNDS AT THE WRAY BOOSTER STATION ON THE OVERLAND PASS PIPELINE SYSTEM WHEN AT APPROXIMATELY 11:30AM HE OBSERVED AND ICE BALL ON THE P200 PUMP UNIT. THE OPERATIONS TECHNICIAN NOTIFIED PIPELINE CONTROL AND HIS SUPERVISOR OF THE ISSUE AND THAT THE RELEASE WAS CONTAINED ON THE PUMP UNIT SKID. THE TECHNICIAN THEN COMPLETED THE REQUIRED LIFE CRITICAL ACTIVITIES AND PAPERWORK AND THEN PERFORMED LOCKOUT/TAGOUT ON THE UNIT. THE TECHNICIAN THEN DIAGNOSED THE CAUSE OF THE RELEASE AS A FAILED INBOARD SEAL AND PROCEEDED TO BLOW DOWN THE PRODUCT IN THE P200 UNIT THROUGH A FLARE SYSTEM. AFTER VERIFYING ZERO PRESSURE CONDITIONS INSIDE THE UNIT THE PUMP WAS DISASSEMBLED AND A NEW INBOARD SEAL WAS INSTALLED. THE UNIT WAS THEN CHECKED FOR LEAKS BEFORE LOCKOUT/TAGOUT WAS REMOVED PER PROCEDURE AND THE PUMP RETURNED TO AVAILABILITY FOR SERVICE. THE FAILED SEAL WAS THEN SENT TO THE MANUFACTURER FOR FURTHER DIAGNOSIS WHICH CONCLUDED THAT THE SEAL FAILED DUE TO NORMAL WEAR MILDLY ACCELERATED BY THE PRESENCE OF MINIMAL PIPELINE ROUGE DEBRIS. UPON REPORT OF THIS EVENT TO THE WILLIAMS SECURITY OPERATIONS CENTER AN NRC NOTIFICATION WAS MADE (NRC# 1266171) ON DECEMBER 11, 2019 AT 9:44PM. A FOLLOW-UP 48-HOUR NRC NOTIFICATION (NRC #1266379) WAS MADE ON DECEMBER 13, 2019 AT 5:50PM CONFIRMING NO CHANGE IN EVENT DETAILS.