Kent hazardous material leak closes local business and road

A Kent business was closed down for several hours this morning, July 21, following a leak of ammonia gas inside the building. Continental Mills, in the 7800 block of S. 192 Street, was evacuated at 8:30 this morning when a small amount of ammonia gas began to leak from a refrigeration system. Fire department hazardous materials teams from throughout south King County were brought in at the request of the Kent Fire Department to assist with the situation.

July 20, 2010 4:38 pm

A Kent business was closed down for several hours this morning, July 21, following a leak of ammonia gas inside the building.

Continental Mills, in the 7800 block of S. 192 Street, was evacuated at 8:30 this morning when a small amount of ammonia gas began to leak from a refrigeration system. Fire department hazardous materials teams from throughout south King County were brought in at the request of the Kent Fire Department to assist with the situation. Access to the area was limited by Kent police until the situation was controlled.

All of the employees were able to get out safely and the ammonia gas was confined to a portion of the building. Hazardous materials technicians made entry into the affected area and shut off the flow of gas. The gas was then vented out of the building into the atmosphere in controlled amounts where a light wind quickly dispersed the gas. There was no danger to any of the businesses in the area at any time.

Fire departments from throughout south King County responded to the call as part of the dispatch for a major hazardous materials incident. Teams from Tukwila, Kent, South King Fire and Rescue, Port of Seattle and Renton all assisted in the call. King County paramedics also responded to provide advanced life support if needed.

The management of Continental Mills worked closely with the Kent Fire Department to ensure the safety of employees and the other local businesses.

Ammonia (NH3) is a chemical that is used both residentially as well as commercially. Most people are familiar with it as a cleaning agent and the pungent odor it emits. Ammonia is also used industrially for refrigeration, in the manufacturing of plastics, and for agriculture.

If inhaled, ammonia can cause respiratory distress, burns to the lungs, and in severe cases, pulmonary edema (fluid in the lungs). Ammonia can also cause burns (being a caustic) if it comes in contact with moist skin. Because of its distinct odor, ammonia can be detected with as little as 1 part per million (ppm). Due to the concentration involved in this incident, there was no danger of an explosion or fire.