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Hazardous Locations

Polar King Walk-in Coolers and Freezers Use in Hazardous Locations 

According to the Occupational Safety and Health Administration (OSHA) hazardous locations are areas where flammable liquids, gases or vapors or combustible dusts exist in sufficient quantities to produce an explosion or fire. In hazardous locations, specially designed equipment and special installation techniques must be used to protect against the explosive and flammable potential of these substances.

Polar King International’s explosion-proof units are capable of withstanding pressures that result from an internal explosion. Our units are designed to specifically prevent explosive gas air mixtures from igniting. Whether you need a standard explosion proof freezer unit or a customized freezer unit, we can take care of your requirements. We offer Class 1, 2, and 3, and Division 1 and 2 ratings for the interior and exterior cooler and freezer units of the walk-in module. All of our units comply with Chapter 5 of the National Electric Code. Our walk-in cooler and freezer units can offer gas detection system (LEL) and/or an integrated 500-gallon containment sump.

hazardous locations

National Electrical Code (NEC) Hazardous Location Definition

An area where a potential hazard e.g. a fire an explosion etc. may exist under normal or abnormal conditions because of the presence of flammable gases or vapors, combustible dusts or ignitable fibers or flyings.

Article 100 of the NEC provides the following definition for explosion proof apparatus:

Apparatus is enclosed in a case that is capable of withstanding an explosion of a specified gas or vapor that may occur within it and of preventing the ignition of a specified gas or vapor surrounding the enclosure by sparks, flashes or explosion of the gas or vapor within, and which operates at such an external temperature that a surrounding flammable atmosphere will not be ignited thereby.

About Polar King

As the industry’s #1 manufacturer of outdoor fiberglass Walk-In Coolers and Walk-In Freezers, Polar King units are designed to endure even the most rugged conditions and climates. All of our Walk-In Coolers and Freezers are delivered fully assembled and require only a simple electrical connection to put them into operation. With a 100% seamless fiberglass design, Polar King offers the industry’s only one-piece, outdoor units.