Figure 2-22. Public Railway distance.
An operating line is a group of buildings, facilities, or related work stations so arranged as to permit the
performance of the consecutive steps in the manufacture of an explosive or in the loading, assembly,
modification, or maintenance of ammunition. (Refer to Figure 2-15 on page 2-12.)
DETERMINING NET EXPLOSIVE WEIGHTS
For solid propellants, the NEW is the net weight of the propellant in containers (for bulk propellants) or
in the propelling charges.
For rockets and guided missiles, the NEW is the net weight of the explosives in the warhead plus the
net weight of the propellant in the rocket motor. Note that an exception to this rule exists where testing
has shown that the propellant in the rocket motor will make no significant contribution to the HE yield of
the warhead. In such cases, the NEW will be computed separately based on the warhead and on the
propellant. The greater of these two results must be used.
QUANTITY-DISTANCE CLASSES AND DIVISIONS
There are five QD classes and divisions, as shown in Table 2-1.
Table 2-1. QD class/divisions and hazards.