MCCHORD PIPELINE CO.

Incident Narrative

ONE CALL TICKET CAME OUT 7/26/17, MPL INSPECTOR WENT TO ADDRESS ON TICKET 9911 PACIFIC THE SAME DAY AND FOUND WHITE MARKS ON THE GROUND WITH ARROWS INDICATING A BOUNDARY OF EXCAVATION AT 9911 PACIFIC ONLY. MPL INSPECTOR DROVE DOWN TO INTERSECTION OF 100TH AND A STREET AND THERE WERE NO WHITE MARKS ON THE GROUND. CONTRACTOR PLACED WHITE MARKS AT 100TH AND A STREET ON 8/1/17 BUT DID NOT NOTIFY US THAT THEY HAD PLACED THESE OR CHANGED THE BOUNDARY OF THEIR EXCAVATION. CONTRACTOR CALLED TACOMA WATER AND PUGET SOUND ENERGY TO MARK AT 100TH AND A STREET ON 8/1/17 BUT NOT MPL. CONTRACTOR FAILED TO FOLLOW ONE CALL PRACTICE BY CHANGING THE AREA THEY WERE WORKING BY ADDING NEW MARKS, BUT NOT UPDATING OR CALLING IN A NEW ONE CALL TICKET. ON 8/2/17: 1213 MCCHORD PIPELINE (MPL) CONTROLLER GOT AN ALARM FOR HIGH DIFFERENTIAL FLOW, SHIPPED MPL / RECEIVED AT THE AIR FORCE BASE (JBLM) 1216 FLOW DIFFERENTIAL INCREASED, PUMP DISCHARGE PRESSURE DECREASED, CONTROLLER AND SHIFT SUPERVISOR REVIEWED TRENDS AND DETERMINED THEY INDICATED A LEAK 1218 MPL SHUT DOWN BY OUTSIDE OPERATOR 1225 MPL PIPELINE INSPECTOR RECEIVED A CALL FROM THIRD PARTY CONTRACTOR SEFNCO THAT THEY HIT OUR LINE AT 100TH AND A STREET IN TACOMA, WA (PIERCE COUNTY) AND THAT FUEL WAS COMING UP OUT OF THE GROUND 1225 MPL INSPECTOR TOLD SEFNCO TO CALL FIRE DEPARTMENT AND IMMEDIATELY LEFT OUR PLANT ALONG WITH TWO OTHER INSPECTORS TO CLOSE UPSTREAM AND DOWNSTREAM VALVES 1245 VALVE AT MP 9.958 CLOSED 1246 VALVE AT MP 2.38 CLOSED 1254 VALVE AT MP 5.057 CLOSED 1254 MPL INSPECTOR ARRIVES ON SITE TO SECURE AREA, BEGIN AIR MONITORING 1300 FIRST VACUUM TRUCKS ARRIVE ON SITE TO RECOVER JET FUEL 1600 HYDROEXCAVATING STARTS IN ORDER TO MAKE A TEMPORARY REPAIR ON THE PIPE 2000 TEMPORARY CLAMP INSTALLED ON PIPE AT POINT OF PUNCTURE, LEAK STOPPED