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Detroit Refinery Community Site

Refinery Alerts

Refinery Alarm Testing (11/29-12/2)

Marathon Petroleum Company will be testing the new emergency alarm system from Tuesday, November 29th to Friday, December 2nd, 2022.

There will be a voice message before the plant sounds the alarm stating that the refinery will be testing the alarm.  Following the voice command, the alarm will sound for 1 minute.

Refinery Alarm Testing (11/3-11/4)

Marathon Petroleum Company will be testing the new emergency alarm system on Thursday (11/3) and Friday (11/4).

There will be a voice message before the plant sounds the alarm stating that the refinery will be testing the alarm.  Following the voice command the alarm will sound for 1 minute.

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.

Refinery Alarm to be Tested on Sept. 10

In the morning of Thursday, Sept. 10, the Detroit refinery will test an alarm system in our visitor parking lot on Fort Street. The test will take place at approximately 9 am.

This notification is for informational purposes only. There is no community action required, or impact on the community.

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

Smoke may be visible August 6th due to firefighter training

On Thursday morning, August 6, Marathon Petroleum firefighters will conduct a fire extinguisher training class training that will result in periods of visible smoke from company property. 

This notification is for information only, and there is no community action required.

Safety is one of Marathon Petroleum’s highest priorities, and we conduct training regularly to ensure constant readiness.