NEW MEXICO GAS COMPANY

Incident Narrative

ON SEPTEMBER 7, 2023, AN EXPLOSION OCCURRED AT 14:18 AT 4100 RIDGELEY AVE NE IN ALBUQUERQUE, NM 87108. AT 14:37, NMGC WAS NOTIFIED BY ALBUQUERQUE FIRE AND RESCUE OF A HOUSE EXPLOSION. NMGC ARRIVED AT THE PROPERTY AT 14:52. GAS WAS ESCAPING FROM THE RISER WHEN THE NMGC TECHNICIAN ARRIVED. GAS WAS UNDER CONTROL AT 15:33 AT THE RISER. NMGC BEGAN PROBING FOR GAS AT 15:33. THE NMGC RESPONDING CREW DISCOVERED GAS CONCENTRATION READINGS OF 100% GAS IN THE STREET DIRECTLY IN FRONT OF 4100 RIDGELEY AVE NE. NMGC EXPOSED THE 2-INCH PE PIPE, WHERE THE SECTION OF MAIN WAS OFFSET WITH A DOGLEG THAT WAS INSTALLED IN 2017. A 2X3-INCH LEAK CLAMP WAS INSTALLED AS A TEMPORARY REPAIR. THE SECTION OF MAIN WAS SQUEEZED OFF AT 21:30 AND CAPPED AS A PERMANENT REPAIR. THERE WERE TWO RESIDENTS OF 4100 RIDGELEY AVENUE WHO WERE TREATED FOR NON-LIFE THREATENING INJURIES AND RELEASED. AT 17:15, GAS ODORANT TESTING WITH A HEATH ODOROMETER WAS CONDUCTED REVEALING SUFFICIENT ODORANT AT 0.50% GAS-IN-AIR (12.5% LEL). ADDITIONAL GAS ODORANT TESTING WITH A HEATH ODOROMETER WAS PERFORMED SHOWING APPROPRIATE ODORANT LEVELS. LABORATORY TESTS WERE CONDUCTED ON OCTOBER 25, 2023 WHICH REVEALED A LACK OF COMPLETE FUSION ON BUTT WELD. REGARDING QUESTIONS PART A #7 AND PART A #21C, THE FORM DOES NOT ALLOW AN ENTRY OF ""UNKNOWN"" BECAUSE A CALCULATION CANNOT BE PERFORMED DUE TO LIMITED OR UNKNOWN INFORMATION NEEDED TO PERFORM THE CALCULATION.