SOUTHWEST GAS CORP

Incident Narrative

OPERATOR RESPONDED TO AN ODORS COMPLAINT RECEIVED AT 17:00 PDT LOCATED IN A CUL-DE-SAC NEAR 5454 BRISTOL BEND COURT IN LAS VEGAS, NV. A HAZARDOUS GRADE 1 LEAK WAS DISCOVERED ON A 4-INCH M8100 PIPE LOCATED NEAR THE INTERSECTION OF HAWK SPRINGS ROAD AND MESA PARK DRIVE IN LAS VEGAS, NV. THE FLOW OF GAS TO THE SECTION OF PIPE WAS TAKEN OUT OF SERVICE WHILE REPAIRS WERE COMPLETED WHICH RESULTED IN A SERVICE OUTAGE OF 1768 CUSTOMERS. BASED ON COMMUNICATIONS THAT THE PUBLIC UTILITIES COMMISSION OF NEVADA'S REGULATORY OPERATIONS STAFF HAD WITH THE PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION'S ACCIDENT INVESTIGATION DIVISION, PART A - 4 ""LOCAL TIME AND DATE OF THE INCIDENT"" REFLECTS THE TIME OPERATOR PERSONNEL IDENTIFIED AND REPORTED A GRADE 1 LEAK ON THE PIPELINE. AT THAT TIME, NO INCIDENT REPORTING CRITERIA WAS MET. THE SHUTDOWN TIME REPORTED IN PART A, 13A (21:49) IS THE EARLIEST DATE AND TIME A REPORTING CRITERIA WAS MET. DUE TO THE SHUTDOWN OF THE PIPELINE, THE INCIDENT WAS ESTIMATED TO REACH PROPERTY DAMAGE OF $50,000 OR MORE. TELEPHONIC NOTIFICATION WAS MADE WITHIN ONE HOUR OF THE SHUTDOWN TIME. PART A, 6: SOUTHWEST GAS NOTIFIED THE NATIONAL RESPONSE CENTER (NRC) TELEPHONICALLY OF THE INCIDENT ON JANUARY 15, 2018 AT 22:04 PDT. THE NRC ISSUED REPORT NUMBER 1202010 FOR THE INCIDENT. SOUTHWEST GAS PROVIDED A 48-HOUR UPDATE TELEPHONICALLY TO THE NRC ON JANUARY 17, 2018 AT 14:28 PDT. THE NRC ISSUED REPORT NUMBER 1202162 FOR THE UPDATED REPORT.