OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

September 14, 1984

Colonel Charles St. Arnaud
Quartermaster Corps Commanding
Department of the Army
Sharpe Army Depot
Lathrop, CA 95331

Attn: Bruce Hansen

Dear Bruce:

As I described to you on the phone, the fire protection technical experts researched the intent of the OSHA standard dealing with stored combustible liquids, their respective flashpoints, and the precautions required if heat caused them to be heated to within 30oF of the flashpoint.

They concluded that the standard was not intended to consider natural or atmospheric "heat", i.e., air temperature as a heat source, only artificial heat. Proper storage containers and good ventilation are important to ensure that accidental combustion does not occur, although the additional measures are not called for in this case.

I hope this information has been helpful.


Assistant Regional Administrator
Office of Technical Support