Ammonia spill injures one person, forces evacuation of Ramsay’s Kitchen in downtown Naperville

A basement ammonia spill injured one person and forced the evacuation of Ramsay’s Kitchen in downtown Naperville Monday, according to the Naperville Fire Department.

Patrons and staff exited building 39 W. Jefferson Ave. restaurant about 9:15 p.m. after the accident occurred, the report said.

Hazmat technicians needed about 30 minutes to remove the liquid using specialized absorbent materials and another 30 minutes to “to ensure that all fumes were ventilated and the space was safe for occupants,” the release said.

The injured person was not identified but they were reported to be in stable condition.

After the cleanup and ventilation, staff were allowed to return to the building. The restaurant reopened for business Tuesday.

The city fire department was assisted by personnel from the Warrenville, Lisle-Woodridge, Darien-Woodridge and the Downers Grove fire departments and Plainfield Fire Protection District provided backup while the city firefighters were occupied during the cleanup, the release said.

Ramsay’s Kitchen, which opened in Naperville in May 2023, is one of four owned by celebrity chef Gordon Ramsay, a Michelin-starred chef and television personality. The others are in Boston, Las Vegas and Oklahoma City.

It’s a high-end dining room that offers in a mix of Ramsay specialities, including RK burger and beef wellington; British favorites such as fish and chips and sticky toffee pudding; and seafood, beef and chicken sandwiches and entrees.