incompatible corrosives that should be separated by a wall or an aisle equal to or greater in width
than the pile heights of the corrosives.
E. References. Additional information pertaining to the storage of corrosives may be found in:
1. NFPA Standard 43A, Code for the Storage of Liquid and Solid Oxidizing Materials.
2. National Safety Council Data Sheet 1-523-Rev 81, Chemical Burns.
3. DLAM 6055.5-M, Occupational Health Surveillance Manual.
4.11 DoD Storage Type D: Oxidizer Material Storage
A. Purpose. This type of storage should be used for UN division 5.1, oxidizing materials.
B. Hazard Considerations. Several important groups of chemicals known as oxidizing agents
readily yield oxygen or other oxidizing gases (e.g., chlorine, bromine, fluorine, etc.) for
combustion. Although most oxidizing chemicals are not combustible, they may increase the ease
of ignition of flammable or combustible materials and usually will increase the intensity of
burning. A few oxidizing agents such as calcium hypochlorite, are unstable and susceptible to
hazardous decomposition when in contact with moisture and organic or other flammable or
combustible materials. This situation provides all of the ingredients for a fire or explosion.
Calcium hypochlorite should be stored in a cool, dry, and well-ventilated place, away from
flammable or combustible materials.
C. Applicable HCCs. The following HCCs should be stored in storage type D:
1. D1, Oxidizer.
2. D2, Oxidizer and Poison.
3. D3, Oxidizer and Corrosive, Acidic
4. D4, Oxidizer and Corrosive, Alkali
D. Storage Arrangement. Some general requirements are:
1. The arrangement and quantity of oxidizers in storage depends upon their NFPA class (1, 2,
3, or 4), type of container, type of storage (segregated, cutoff, or detached), type of fire protection
provided, and manufacturer's instructions.
2. Approval of the storage arrangement shall take into consideration the potential evolution of
large quantities of toxic vapors that would present a severe hazard to surrounding areas.
3. Oxidizers shall be stored to avoid contact with incompatible materials such as
4-10
