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Recommended Storage of Primers
Storage cabinets containing only primers are recommended. These cabinets should be ruggedly constructed of lumber at least 1″ nominal thickness to delay or minimize the
transmission of heat in the event of fire. SAAMI recommends
against storing primers in sealed or pressurized containers.
Keep your storage and use area clean. Make sure the surrounding area is free of trash or other readily combustible materials.
Be sure your storage area is free from any possible sources of excessive heat and is isolated from open flame, furnaces, water heaters, etc. Do not store primers where they can be exposed to direct sunlight.
Avoid storage in areas where mechanical or electrical equipment is in operation.
Do not store primers in the same area with solvents, flammable gases, or highly combustible materials. Store primers only in their original factory containers. Do not transfer the primers from this approved container into one which is not approved. The use of glass bottles, fruit jars, plastic or metal containers, or other bulk containers for primer storage is extremely hazardous.
Do not smoke in areas where primers are stored. Place appropriate “No Smoking” signs in these areas.
Do not store primers in any area where they might be exposed to gun fire, bullet impact, or ricochets. Do not store primers with propellant powders or any other highly combustible materials so as to avoid involving primers in a fire as much as possible. Observe all regulations regarding quantity and methods of storing primers.
Per RECOMMENDATIONS ON STORAGE AND HANDLING
Issued by the National Fire Protection Association
Battery March Park, Quincy, MA 02269 and reprinted with their permission: NFPA 495 Explosive Materials Code
This code was originally issued in 1912 as the Suggested State Law to Regulate the Manufacture, Storage, Sale and Use of Explosives. The second edition was issued in 1941 by the Committee on laws and Ordinance and retitled Suggested Explosives Ordinance for Cities. Later, the document number NFPA 495L was designated.
11-5.2 Transportation of small arms primers shall comply with US Department of Transportation Regulations.
11-5.3 No more than 25,000 small arms primers may be transported in a private vehicle.
11-5.4 No more than 10,000 small arms primers may be stored in residences.
11-5.5 No more than 10,000 small arms primers may be displayed in commercial establishments.
11-5.6 Commercial stocks of small arms primers shall be stored as follows:
(a) Quantities not exceeding 750,000 may be stored in a building if not more than 100,000 are stored in any one pile and piles are at least 15 ft (4.6 m) apart.
(b) Quantities exceeding 750,000 may be stored in a building if the following conditions are met:
1. The warehouse or storage room shall not be accessible to unauthorized personnel.
2. Primers shall be stored in cabinets. No more than 200,000 primers shall be stored in any one cabinet.
3. Shelves in cabinets shall have vertical separation of at least 2 ft (0.6 m).
4. Cabinets shall be located against walls of the warehouse or storage room with at least 40 ft (12.2 m) between cabinets.
5. Separation between cabinets may be reduced to 20 ft (6.1 m) if barricades twice the height of the cabinets are attached to the wall, midway between each cabinet. The bar-
ricades shall extend at least 10 ft (3 m) outward, shall be firmly attached to the wall, and shall be constructed of 1/4 in. (6.4 mm) boiler plate, 2 in. (51 mm) thick wood, brick or
6. Primers shall be separated from materials classified by the US Department of Transportation as flammable liquids, flammable solids, and oxidizing materials by a distance of 25 ft (7.63 m) or by a fire partition having a fire resistance of at least 1 hour.
7. The building shall be protected by an automatic sprinkler system installed according to NFPA 13, Standard for the Installation of Sprinkler Systems.
(c) Small arms primers not stored according to (a) or (b) above shall be stored in a magazine meeting the requirements of Chapter 6
the above is not a requirement for storage I usually store in a military ammo can inside a cabinet. Heat same as powder, rotate stockage interesting to not that primers can actually be stored way longer than powder if in a cool location. Hope this help answers your questions