Campus Alert Archive
MSU

Ammonia Alarm Clears Munn Ice Arena and Closes Campus Road During Refrigeration Leak

MIhazmatemergency notificationmedium confidence
Confirmed Threat

On April 28, 2016, the monitoring system at Munn Ice Arena on Michigan State University's campus detected an ammonia leak in the refrigeration plant just after 1:10 PM EDT, triggering an automatic safety alarm that evacuated the building and prompted police to close Chestnut Road. No injuries were reported and the chemical leak was contained without incident.

Alerts
2
Response
—
Killed
0
Injured
0
Institution
Michigan State University
Public R1 · MI
~49,800 studentsMSU Alert
Confirmed Timeline

Alert Sequence

2 messages in sequence

Some alert texts below are approximate reconstructions from news coverage, not confirmed verbatim transcripts. Reconstructed texts are shown in italic with a dashed border. Verified verbatim texts have a solid border and are marked accordingly.

INITIAL ALERTUnknown
Approximate reconstruction254 chars
MSU Police: Munn Ice Arena has been evacuated due to a chemical leak detected by the arena monitoring system. Chestnut Road is closed between Shaw Lane and Demonstration Hall Road. Avoid the area until further notice. There is no threat to the community.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

At approximately 1:10 PM EDT, the arena's ammonia monitoring system automatically detected a leak in the refrigeration plant and set off an alarm, triggering both internal safety protocols and notification to police.
Munn Ice Arena uses an anhydrous ammonia refrigeration system typical for collegiate ice rinks; EPA regulations require automated monitoring and alarm systems for facilities using ammonia above threshold quantities.
Chestnut Road closure was a precautionary measure to keep uninvolved persons away from the potential ammonia exposure zone.
ALL CLEARWebsite
Approximate reconstruction190 chars
MSU Police: The chemical leak at Munn Ice Arena has been contained. The arena has been cleared. Chestnut Road is reopening. No injuries were reported and there is no threat to the community.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The MSU official statement posted on the university website confirmed the leak was contained the same afternoon it was detected, with no injuries reported.
The arena's automatic safety systems, including exhaust fan shutoff and authority notification, functioned as designed, enabling rapid isolation of the leak source.
Context

Background

On April 28, 2016, the ammonia monitoring system at Munn Ice Arena at Michigan State University detected a chemical leak in the refrigeration plant at approximately 1:10 PM EDT and immediately activated safety protocols. Munn Arena, which opened in 1974, serves as the home of MSU Spartan men's ice hockey and is used for public skating and intramural activities. Anhydrous ammonia is the standard refrigerant for collegiate and professional ice rinks because of its efficiency, but it is also a toxic chemical that can cause serious respiratory harm at high concentrations. The automatic monitoring system did exactly what it was designed to do: upon detecting ammonia, it shut off exhaust fans to prevent spread and immediately notified police, who evacuated the approximately half-dozen people present and closed Chestnut Road between Shaw Lane and Demonstration Hall Road as a precautionary buffer. Emergency responders confirmed the leak was contained, no injuries occurred, and there was no wider threat to the MSU community. The incident highlighted how routine refrigeration maintenance cycles at campus ice facilities can generate hazmat responses requiring campus-wide notification.
Analysis

Key Findings

Munn Ice Arena's automated ammonia monitoring and alarm system detected the leak and initiated safety shutdown protocols before any human reported the hazard.
The leak was contained quickly with no injuries, demonstrating the effectiveness of modern refrigeration plant safety systems at campus ice arenas.
Campus ice rink ammonia leaks represent an under-documented but recurring hazmat category at universities with ice facilities, requiring the same emergency response protocols as industrial chemical plants.
Outcome
Munn Ice Arena was evacuated with a little over half a dozen people present. Chestnut Road between Shaw Lane and Demonstration Hall Road was closed. No injuries were reported. The arena's automatic safety systems isolated the leak and emergency responders confirmed no threat to the wider community.
Provenance

Sources

  1. Official
    Chemical leak contained at Munn Ice Arena (April 28, 2016) -- Michigan State University Official Statement
    msu.edu
  2. News
    MSU's Munn Ice Arena Evacuated Due To Chemical Leak -- CBS Detroit
    detroit.cbslocal.com
Tags
ammonia-leakice-rinkhazmatrefrigerationevacuationautomated-detectioncampus-ice-arena
Added June 2026Updated June 2026Via ingestion