prevent fragment penetration. Protection against items containing less than
15 pounds of explosives may be of steel or other suitable material.
f. To protect against fragments, interlocked
reinforcing
rods
are
desirable for wing walls and concrete ceilings.
g. Disassembly equipment must be designed so personnel will not be
injured if a detonation occurs.
h. Operational shields for bulk high explosives should be the same
physical dimensions as ammunition containing a comparable quantity of
explosives.
4.
Operational shields must be provided to separate the operator from the
item being processed for the following operations:
a. Disassembly
of
loaded
boosters,
fuzes,
primers,
and
blank
ammunition.
b. Removal of base plugs which
are
possibly
contaminated
with
explosives from loaded projectiles.
c. Removal of fuzes from pentolite loaded projectiles.
d. Disassembly of loaded bombs and warheads, except the removal of
shipping bands, nose and tail closing plugs, fin locknuts, and washout of
high explosive bursting charges.
e. Pull apart of fixed ammunition 20 mm and larger. In the pull apart
of rounds containing self-destroying tracer, the dimensions of the shield
should anticipate initiation of the propellant and the projectile.
f. Disassembly of foreign ammunition or other ammunition of uncertain
design and condition.
5.
Normally, the equipment required for shielded operations includes a
suitable shield, holding devices, operating device, means of observing the
operation, and a means of safely transmitting power required for the
operation.
a. A suitable holding device, located behind the operational shield,
may consist of some form of a vise or jig on either a fixed or an adjustable
base; the item must be positioned to apply the operating device.
b. A suitable operating device may be a wrench, screwdriver, or other
tool.
14
MM4673
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