minimize the risks of chain explosions, fragmentation, and spread of fire. When storing chemical munitions,
a. Field Storage Categories are based on the following safety factors:
(1). Ammunition items having comparable storage risks are grouped in the same category.
(2). Within each storage category, the maximum quantity of ammunition to be stored within each stack
and each field storage unit (FSU), and the minimum distance between FSUs and categories, are
specified in quantity-distance tables in TM 9-1300-206. Also see Figure 9, page 12 of this subcourse.
Note that quantity-distance is based on the gross weight of the ammunition to include packaging, not
the net explosive weight as in magazine storage.
(3). Normally, a stack contains only one type of ammunition. If more than one type of ammunition is
stored in a stack it should be arranged in a manner to facilitate inventory and inspection. Where
camouflage is a consideration, stacks may be stepped in toward the top (terraced or pyramid stacking)
to decrease shadows. Whenever desirable, components of complete rounds may be stored within the
(4). Small arms ammunition other than bulk-packed incendiary and tracer cartridges (which must be
stored in category D) may be stored with any category.
b. The Field Storage Categories and their contents are:
(1). Category A: Fixed and semifixed artillery ammunition (except chemical and incendiary).
(2.) Category B: Separate loading artillery projectiles, propelling charges, primers, fuzes and flash
reducers (excluding chemical and incendiary ammunition).
(3). Category C: Mortar ammunition and hand grenades (except chemical and incendiary).
(4). Category D: All pyrotechnics, chemical and incendiary ammunition of all types.
(5). Category E: All demolition explosives, antitank and antipersonnel mines (except VX loaded), and
components such as blasting caps, firing devices, detonating cord, and safety fuse.
(6). Category F: Rockets, rocket motors, guided missiles, and rifle grenades (except chemical).
(7). Category G: The following items of Air Force Class V supply--all unfuzed HE bombs, aircraft
mines, aircraft torpedoes, and fragmentation bombs. Fuzes and/or primer-detonators for the above
items, and fragmentation bomb clusters, fuzed or unfuzed. The remainder of Air Force Class V items
must be stored in other applicable categories.
c. To determine the field storage category of an item, let's first look at the stockage list. For example, the
first item on the stockage list in Figure 10, page 12 is Ctg., 7.62mm Ball, M80 Linked. Since this is small
arms ammunition it may be stored with any category. The second item on the list is Ctg., 60mm HE, with
fuze. This is mortar ammunition, therefore it is stored with category C. With the information gathered so
far we can now figure the quantity-distance requirements.
4. Quantity-Distances (QDs) are measurements between stored munitions in the ASP. Certain kinds of
munitions must be stored specified distances from other munitions, thoroughfares, or buildings. The