LESSON 2
Figure 2-3. Inhabited Building Distance (IBD)
explosives, or loaded ammunition components.
figure 2-4.)
Intermagazine Distance: The minimum distance permitted between explosive locations, as
prescribed for various types and quantities of explosives. This distance should prevent propagation by
blast.
Operating Building: Any structure except a magazine in which operations pertaining to
manufacturing, processing, handling, loading, or assembling of ammunition or explosives are
performed.
Operating Line: A group of buildings, facilities, or related work stations so arranged as to permit
performance of the consecutive steps in the manufacture of an explosive, or in the loading, assembly,
or modification, and maintenance of ammunition. (See figure 2-5.)
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