Example 4. Determine the minimum separation distance required between two unbarricaded
stacks. One is a 10-ton stack of propelling charges. The other is a 50-ton stack of fuzes. Both of
these items are Category B. The table in Figure 7 shows the unbarricaded stacks of Category B
require at least 50 feet between stacks. But Note 2 says that there must be at least 100 feet
between propelling charges and any other stacks, whether barricaded or unbarricaded. The
minimum separation distance is 100 feet because the greater distance is always used.
QDs will determine how far apart stacks, FSUs, and categories of the system chosen must be
spaced. They may necessitate enlarging the total area used for storage.
c. Now that you know how the layout of an ammunition storage area is planned, you will learn to
compute QD requirements. To compute QD requirements for an item of ammunition, follow
these steps:
Step 1: Determine the gross tonnage and FSC for the item.
Let's say the item is FSC "C" with a gross tonnage of 841.5 tons.
Step 2: Divide the gross tonnage of the item by 3. You do this so that the item can be stored in all 3
sections of the ASP.
841.5
+
3
= 280.5
This means you will have 280.5 tons of the item in each section.
Step 3: Look at Figure 8. Go to Category C. Look at the first column, under "Gross Tons Per Stack."
You can see that you are allowed a maximum of 30 tons per stack.
Divide 280.5 by 30. The answer is 9.35.
This means that with 280.5 tons per section, you will have to have approximately 10 stacks of
the item per section.
Step 4: Look at the next column, under "Gross Tons Per FSU." You can see that the maximum
allowable tonnage per FSU is 300 tons. With 280.5 tons in each section, you can store all of the
stacks in one FSU.
Go over this one more time.
You have a total of 841.5 tons to store.
Divide this into thirds (divide 841.5 by 3) so you can store the item evenly in each of the 3
sections.
This will mean 280.5 tons will be stored in each section.
Since the maximum tons per FSU is 300 tons, all of the ammunition can be stored in one FSU in
each of the 3 sections.
d. To enhance skills learned in the step-by-step procedures above, use Figure 8 when working the
review.
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