INDIANA GAS CO INC

Incident Narrative

A CONTRACTOR WORKING WITHOUT VALID LOCATE REQUEST, WAS WORKING TO DE-WATER THE SITE OF A RESIDENTIAL SUBDIVISION BY USING A VERTICAL AUGER TO PERFORM THIS DE-WATERING PROCESS WHEN THEY AUGER-ED INTO A 10"" STEEL HIGH PRESSURE DISTRIBUTION NATURAL GAS PIPELINE (HOLE APPROX. 2"" X 8""). THIS RESULTED IN VALVING-OFF, ISOLATING AND BLOWING DOWN APPROXIMATELY 4.7 MILES OF THIS 10"" STEEL HIGH PRESSURE DISTRIBUTION PIPELINE THAT WAS OPERATING AT APPROXIMATELY 210 PSIG, EFFECTING 338 RESIDENTIAL CUSTOMERS. AFTER BLOW-DOWN OF THIS LINE, TEMPORARY REPAIRS WERE PERFORMED BY REMOVING THE DAMAGED PIPELINE AND CAPPING THE PIPELINE ON EITHER SIDE OF THE DAMAGE. STOPPLE FITTINGS AND PIPE WERE LATER USED TO RECONNECT THE PIPELINE. ORIGINAL INCIDENT NOTIFICATION WAS MADE TO NRC ON REPORT #1303207 ASSUMING THAT THE NATURAL GAS RELEASE WOULD BE IN EXCESS OF 3 MMCF HOWEVER, LATER UPDATED ON REPORT #1303361 WHEN IT WAS DETERMINED THAT THIS GAS RELEASE THRESHOLD WAS NOT ACHIEVED. ON 6/29/21 AT 10:39 HOURS, AN UPDATE WAS MADE TO THE NRC ON REPORT #1309152 WHEN IT WAS DETERMINED THAT ACTUAL COSTS HAD NOW EXCEEDED THE FINANCIAL THRESHOLD FOR INCIDENT REPORTING.