CONSUMERS ENERGY CO

Incident Narrative

ON JUNE 19, 2018 AT APPROXIMATELY 17:00 A THIRD PARTY CONTRACTOR INSTALLING STEEL SHEET PILING FOR SHORING, DAMAGED AN 8"" PLASTIC (MEDIUM PRESSURE) PIPELINE CAUSING GAS TO BE RELEASED. THE PIPELINE IS LOCATED ON WALTON BOULEVARD, ROCHESTER HILLS, MICHIGAN (OAKLAND COUNTY). THE CONTRACTOR RECOGNIZED CONTACT HAD BEEN MADE WITH THE PIPELINE, EXITED THE EQUIPMENT AND IMMEDIATELY NOTIFIED CONSUMERS ENERGY OF THE DAMAGE. NO IGNITION, INJURIES OR FATALITIES OCCURRED AS A RESULT OF THE DAMAGE. CONSUMERS PERSONNEL ARRIVED ONSITE AT APPROXIMATELY 17:53 AND BEGAN MONITORING SURROUND LOCATIONS TO ENSURE GAS WAS NOT MIGRATING. A PORTION OF THE ROAD WAS CLOSED AND THE DAMAGE AND SURROUNDING LOCATIONS WERE CONTINUOUSLY MONITORED UNTIL THE PIPELINE WAS ISOLATED AND THE GAS WAS SHUT-OFF . ON JUNE 20, 2018 AT APPROXIMATELY 04:56 THE DAMAGED SECTION OF PIPELINE WAS ISOLATED BY SQUEEZING THE 8"" PLASTIC PIPELINE IN TWO REMOTE LOCATIONS AND INSTALLING PLASTIC CAPS AT EACH END. PERMANENT REPAIR TO THE PIPELINE SEGMENT WAS DELAYED UNTIL THE CULVERT WORK WAS COMPLETED. ON NOVEMBER 15, 2018 APPROXIMATE 500 FEET OF 8"" PLASTIC PIPELINE WAS INSTALL REPAIRING THE DAMAGE SEGMENT AND NORMAL OPERATIONS WERE RESUMED.