Wis. Admin. Code Department of Safety and Professional Services SPS 345.33
If a mechanical refrigeration system component fails and causes injuries to any person that require more than first aid treatment, the owner or user shall report the facts involved to the department within the following 24 hours. The owner or user may not remove or disturb the mechanical refrigeration system or any of its components nor permit any such removal or disturbance prior to receiving authorization from the authorized agent or the department, except for the purpose of saving human life or preventing property damage.
Wis. Admin. Code Department of Safety and Professional Services SPS 345.33
The address for reporting accidents to the Department is the Division of Industry Services, Mechanical Refrigeration Program, P.O. Box 7302, Madison, WI 53707-7302; and the fax number is 608-283-7420.
The Department can be contacted at 608-266-7548 during normal business hours. The State Division of Emergency Management can be contacted at 800-943-0003 during non-business hours.