Chemicals should always be kept by their compatibility group, never en masse alphabetically, as this automatically creates an inappropriate grouping. MSDS sheets for most chemicals provide information about an incompatible substance.
Flammable liquids should be stored in cabinets or rooms that meet certain construction standards. This is done to reduce the risk of personal injury and damage to fixed assets. Flammable chemicals should be kept separate from others that do not fit. If two or more incompatible chemicals are accidentally mixed as in container damage, the result is the generation of gas, heat, fire and the possibility of making a highly toxic substance.
Storage Cabinets for Flammable Chemicals
Metal storage cupboard
* Must be built with at least 18 sheets of measuring and double walled iron with 1 ½ inches of air space.
* Joints should be nailed or welded for a meeting cabinet.
* There should be a 3 point lock on the door.
* Doorill must be at least 2 inches above the bottom of the cabinet.
* Code of National Fire Prevention Association 30 does not require ventilation for ‘fire prevention purposes’. However, if the cabinet is removed, it must be removed from the bottom to the outside.
* Some cabinets are manufactured with ventilation that have removable plugs to meet the requirements in some areas where local regulations still require ventilation.
* Cabinet must be clearly labeled FLAMMABLE – KEEP FIRE AWAY
Wooden storage cabinet
Metal and wood storage cabinets must pass a 10-minute fire test as described in NFPA 251-1969, Standard Fire Test Method. The internal temperature of the cabinet shall not rise more than 325 ° F. All connections and seals shall remain sealed and the door shall remain sealed during the fire test.
* Must be built with the bottom, top and sides of an approved grade of plywood with a minimum thickness of 1 inch, which will not be damaged or lost when burned.
* All connections should be grouped in two directions with flathead screw.
* If more than 1 door is used, there should be a rabetto overlap that is not less than 1 inch.
* The hinge should be installed in such a way as to not lose its holding capacity due to leeway or burn from the screw during a fire test.