Figure 3. Field Storage Categories.
DETERMINING QUANTITY DISTANCE REQUIREMENTS
QDs are measurements between stored munitions in an ASP. Certain kinds of ammunition must be stored
specified distances from other ammunition, thoroughfares, or buildings. The more dangerous the ammunition, the
farther away it must be stored.
There are some terms that need to be explained before the procedure for determining QDs is given. Those
terms are storage layout terms: sections, FSUs, stacks, barricades, and distances.
ASPs are ideally broken down into three sections, each a separate area with its own network of roads. This
dispersion of the ammunition minimizes loss in case of fire, accidental explosion, or enemy action.
FSUs are subdivisions of a section and should store ammunition items of similar storage risk. Although there
must be at least two stacks in an FSU, the total depends, to a great extent, on the ammunition and the terrain of
Stacks are the pallets of ammunition stacked together. The number of pallets in a stack depends on the FSC,
the tonnage, barricades, and QD. Each stack is given a storage location in the ASP in code, such as the 1A1,
2B6, and 3D2 locations shown in Figure 4. Section 1 in Figure 4 shows three stacks in storage locations 1A1,
1A2, and 1A3. These three storage locations represent one FSU, A. They also represent the stacks in one of
four FSUs in section 1. The other FSUs are B, C, and D.
Barricades are natural or man-made barriers that screen groups of stored explosives from each other.
Barricades provide protection against high-velocity, low-angle fragments. Natural barricades use earth as a
shield; man-made barricades may have earth sloping away from a wooden or concrete wall.
There are three kinds of distances used in the determination of QD requirements; interstack, inter-FSU, and
intercategory (Figure 5). Interstack distance is the minimum allowable distance between the closest edges of
adjacent stacks. Inter-FSU distance is the minimum allowable distance between the closest edges of the nearest
stacks in adjacent FSUs. Intercategory distance is the minimum allowable distance from a FSU of one category
to the nearest FSU of another category.