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Chemical Storage - Flammable Liquids in Refrigerators or Freezers
Audit finding: Flammable liquids in refrigerators or freezers
Adverse consequence(s): Increased risk and severity of a fire. A non-explosion proof refrigerator does not have the proper electrical wiring for storing flammable liquids and can be an ignition source for flammable liquids stored in the refrigerator.
Corrective action: Flammable liquids stored in a non-explosion proof refrigerator need to be removed. If you need to store flammable liquids in a refrigerator you will need to purchase an explosion proof refrigerator. You can contact EHS at (410) 706-34934 if you need assistance with selecting an explosion proof refrigerator.
Definition of an explosion proof refrigerator: An explosion proof apparatus is defined in the National Electric Code as follows "Apparatus 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 that operates at such an external temperature that a surrounding flammable atmosphere will not be ignited thereby."
An explosion refrigerator needs to be listed by Factory Mutual (FM), Underwriters Laboratory (U.L.) or other recognized testing laboratory and labeled as such.