Based on NFPA 45 & 70
SAFETY RULES FOR REFRIGERATED STORAGE
Environmental Health & Safety Management
University of Missouri – Columbia
A. Storage of Flammable Materials:
1. Any refrigerated storage unit located on or in a UMC facility, used to store flammable materials, shall have the storage compartment(s),
including door and frame, designed and constructed so as not to provide sources of ignition for the ignitable vapors contained inside the unit.
2. Such a unit must, in addition, have all sources of ignition on the outside of the storage compartment(s) designed and constructed so as either
a. Minimize the possibility of igniting vapors that may leak from the compartment or may be found in the environment around the refrigerator.
(Such a refrigerator is often loosely referred to as a “flammable storage refrigerator”.)
b. Eliminate the possibility of igniting vapors that will leak from the compartment(s) and will be found in the environment around the
refrigerator. (Such a refrigerator is often loosely referred to as an “explosion-proof refrigerator”).
3. For most storage applications, the “flammable storage refrigerator” will be quite acceptable. Consult your safety representative before
investing in the more expensive “explosion—proof” refrigerator. (Not only are the “explosion—proof” units more expensive to purchase, but
they also cost more to install since they must be connected permanently. They are usually intended for installation in areas where flammable
materials are stored in quantity and all ignition sources have been removed – i.e. a designated flammable chemical storeroom.)
B. Storage of Hazardous Materials in General:
1. Biological or radioactive materials having a flammable hazard shall be stored in units as in A above.
2. If hazardous materials are stored within a unit, the appropriate warning signs shall appear on the door (e.g.—carcinogen, biohazard,
radioactive, etc.) See the Health Physicists for advice on handling radioactive materials.
C. Storage of Food:
1. Food or drink shall