CASCADE NATURAL GAS CORP

Incident Narrative

UPDATED QUESTION 12E TO 1 PERSON. AFTER FURTHER INVESTIGATION, 1 PERSON WAS TRANSPORTED TO SKAGIT VALLEY HOSPITAL FOR INJURIES AND THE SECOND PERSON WAS TREATED AND RELEASED AT THE SCENE. 48-HOUR FOLLOW-UP NOTIFICATION MADE TO NRC ON 11/26/2019. (NRC# 1264973) ON 11/25/2019 AT 6:14AM, AN EXPLOSION OCCURRED INSIDE A HOME AT 908 EAST FULTON STREET, MOUNT VERNON, WA. THE EXPLOSION CAUSED CASCADE NATURAL GAS CORPORATION'S (CNGC) RISER TO BREAK BELOW THE METER STOP ON A TWO-METER MANIFOLD THAT WAS SERVING THE ADDRESS (DUPLEX), WHICH RESULTED IN THE UNINTENTIONAL IGNITION OF JURISDICTIONAL NATURAL GAS. THE DUPLEX AND MULTIPLE VEHICLES WERE DESTROYED DUE TO THE FIRE. CNGC FIRST RESPONDERS ASSISTED THE MOUNT VERNON FIRE DEPARTMENT BY SHUTTING OFF GAS TO THE BUILDING AT THE MAIN. THE BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES IS CURRENTLY WORKING WITH THE FIRE DEPARTMENT TO DETERMINE THE CAUSE OF THE INCIDENT; DETAILS HAVE NOT YET BEEN RELEASED. FOLLOWING THE INCIDENT, ON 11/26/2019, CNGC PERFORMED SUCCESSFUL LEAK TESTS ON THE SERVICE LINE TO 908 EAST FULTON STREET AND ON THE ADJACENT MAIN. THE SERVICE LINE LEAK TEST HELD FOR ONE HOUR AND FIVE MINUTES, AND THE MAIN LEAK TEST HELD FOR ONE HOUR; BOTH AT 58PSIG. ADDITIONAL INFORMATION REGARDING PART A 12 E: THE FIRST INJURED PERSON WAS HOSPITALIZED WITH 6% BURNS TO THEIR BODY. THE SECOND PERSON HAD MINOR INJURIES AND DROVE THEIR SELF TO THE HOSPITAL. ADDITIONAL INFORMATION REGARDING PAR A 13: THE RELEASE OF GAS WAS CONTROLLED AT THE SERVICE LINE TO MAIN CONNECTION AT 8:30 A.M. AND THE SERVICE LINE WAS ABANDONED AT THAT 10:00 A.M.