COLUMBIA GAS TRANSMISSION, LLC

Incident Narrative

ON JULY 25, 2020 AT 02:27 EASTERN DAYLIGHT TIME (EDT), COLUMBIA GAS TRANSMISSION, LLC (COLUMBIA), MONITORING CENTER RECEIVED A CALL FROM A LOCAL PRODUCER (DIVERSIFIED) OF A PIPELINE FIRE. AT 04:16 EDT COLUMBIA IDENTIFIED A FIRE WAS ON PIPELINE KA-4 LOCATED IN WYOMING COUNTY, WV NEAR THE UNINCORPORATED COMMUNITY OF TRALEE, WV SOUTH OF ELMORE, WV. . WITH THE ASSISTANCE OF THE LOCAL FIRE DEPARTMENT COLUMBIA WAS ABLE TO ACCESS THE SITE AND USE FIRE EXTINGUISHERS TO EXTINGUISH THE FIRES. THE FIRES WERE SMALL IN SIZE AND REMAINED CONTAINED WITHIN THE PIPELINE RIGHT OF WAY. HOW THE FIRES WERE IGNITED IS UNDER INVESTIGATION. FIRES WERE FUELED BY A (NUISANCE) GAS LEAK ON PIPELINE KA-4. AT APPROXIMATELY 15:00 EDT PIPELINE KA-4 WAS ISOLATED AND SHUTDOWN. INFORMATION ON THE SOURCE OF IGNITION WILL BE PROVIDED WITH A SUPPLEMENT REPORT. THIS SECTION OF PIPELINE KA-4 IS UNCOATED COUPLED PIPELINE WITH NO CATHODIC PROTECTION. THE LEAK ON THE PIPELINE WAS CAUSED BY EXTERNAL CORROSION. PERMANENT REPAIRS WERE MADE TO TWO SECTIONS. SECTION ONE (1) - 40 FEET OF 6 INCH OD IPS, SDR 11, HDPE PIPE WITH COUPLINGS AND 20 FEET OF 6.625 OD, 0.280 WALL, X52 STEEL PIPE WAS COMPLETED ON 09/02/2020. SECTION TWO (2) HAD 5 FEET OF 6 INCH OD IPS, SDR 11, HDPE PIPE WITH COUPLINGS AND 20 FEET OF 6.625 OD, 0.280 WALL, X52 STEEL PIPE WAS COMPLETED ON 9/11/2020. BOTH REPLACEMENT SECTIONS WAS PRESSURE TESTED TO 150 PSIG FOR 1 HOUR. LINE KA-4 WAS RETURNED TO SERVICE ON 9/11/2020.