Detroit Refinery

Current Planned Maintenance

On Thursday August 18, 2022, the Marathon Detroit Refinery began planned maintenance that is scheduled through September 15, 2022. Due to the work being done, neighbors may experience loud noises, and flaring may become necessary.

Test of emergency alarm system Tuesday and Wednesday

Marathon Petroleum Detroit Refinery will be testing the new emergency alarm system on Tuesday, July 26 and Wednesday, July 27. There will be a voice message over loudspeakers at the refinery before the plant sounds the testing alarm. Following the voice command, the testing alarm will sound for one minute.

Safety is a core value for Marathon Petroleum, and we regularly conduct tests of our systems to ensure constant readiness.

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