OSHA Injury Report: Cottage Grove (Site)

At a glance

Where did this happen?

What was the outcome?

Before the incident

At [REDACTED] PE craft were resetting a breaker inside an MCC room in [REDACTED]. Three PE craft were present. Two of the crafts were resetting the breaker to a VFD when the arc flash occurred. The third craft was standing near the VFD. After the breaker feeding the VFD was reenergized there was a loud noise and the door for the drive blew off onto the floor. The main breaker was tripped. Initially both craft were fine. At [REDACTED] the employee that was near the VFD had some discomfort in his left ear. He contacted a supervisor and tried to call the site nurse. Security was called but E-squad was not needed. Employee drove himself to the clinic.

What happened

At [REDACTED] PE craft were resetting a breaker inside an MCC room in [REDACTED]. Three PE craft were present. Two of the crafts were resetting the breaker to a VFD when the arc flash occurred. The third craft was standing near the VFD. After the breaker feeding the VFD was reenergized there was a loud noise and the door for the drive blew off onto the floor. The main breaker was tripped. Initially both craft were fine. At [REDACTED] the employee that was near the VFD had some discomfort in his left ear. He contacted a supervisor and tried to call the site nurse. Security was called but E-squad was not needed. Employee drove himself to the clinic.

Injury or illness

Ringing in Ears; Hearing loss with 3M Recordable STS and greater than 25 dB hearing threshold to Left - Ear{s} - Internal

Object or substance involved

Suspected arc flash within a drive box resulted in loud noise employee was exposed to and the drive box door blowing off and onto the floor.

Summary line

Suspected arc flash within a drive box resulted in loud noise employee was exposed to and the drive box door blowing off and onto the floor.

Employee and industry

When (timing detail)

More injuries at Cottage Grove (Site)

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Source

Data from OSHA ITA Form 300/301 electronic submissions, filing year 2025. ITA Case Detail records are establishment-reported submissions, not OSHA inspections — no per-record IMIS deep link exists.