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Mark and Modification Designation - 14024_341
Quantity-Distance (Q-D) Requirements - 14024_343

Aviation Ordinanceman 1 - Aviation theories and other practices
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contained in Navy Ammunition Logistics Codes, NAVAIR 11-1-116B/TW010-AA-ORD-030. Ammunition Lot Number An ammunition lot is a quantity of ammunition assembled from uniform components under similar conditions. A lot is expected to function in a uniform manner. Each ammunition lot (table 12-3) is assigned a code number (ammunition lot number) that identifies all ammunition items assembled as part of that lot. For specific ammunition lot numbers, you should refer to Identification of Ammunition, NAVSEA OP 2238/ NAVAIR 11-1-117. Table 12-3.—Derivation of Lot Number MAGAZINES Explosives and ammunition are stowed in magazines or areas designated for the specific materials. NAVSEASYSCOM designs and designates all magazines or storage areas. The type and amount of material that may be stowed in any magazine depends on the type of magazine in relation to the quantity- distance requirements. Types of Magazines Magazines located at naval air stations and other naval installations are of various sizes, types of construction, and classes, depending upon the nature of the material to be stowed. Magazines are designated as high-explosive magazines, smokeless-powder magazines, and ready-service magazines according to their intended use. Magazines are further classified by type of design—surface, subsurface, arch-type, earth-covered, or barricaded. Recently designed magazines used to store smokeless powder, pyrotechnics, loaded projectiles, fixed ammunition, small-arms ammunition, and other fire or missile hazard materials are of two general types-the rectangular, earth-covered magazine and the concrete, triple-arch, earth-covered magazine. 1. The rectangular, earth-covered magazine (50 feet by 100 feet) is constructed of reinforced concrete throughout. 2. The concrete, triple-arch, earth-covered magazine has three arches. The combined arches make up a single magazine; however, each arch is separated by a minimum of 10 feet at the door, and the space is filled with dirt. The standard floor size of each arch in the triple-arch construction is 25 feet by 80 feet. Each of the three arches maybe used for a different type of compatible material. Magazines constructed since 1928 that are used for storing high-explosive, bomb-type ammunition, and other explosive hazard materials are made of reinforced concrete, single-arch, earth-covered type construction, and they are barricaded at the entrance end. These magazines have been constructed in three sizes: 1. The 25 feet by 50 feet and the 25 feet by 40 feet sizes are suitable for the stowage of 250,000 pounds net weight of explosives. 2. The 25 feet by 80 feet size is suitable for the stowage of 500,000 pounds net weight of explosives. 12-4







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