in the absence of sunlight or daylight, the
impregnation treatment should remain effective
for 5 to 10 years or more.
NOTE: Impregnated clothing is being phased
out and will be replaced with the chemical-
The chemical-protective overgarment consists
of two piecesa smock and trousers (fig. 6-9).
The smock has two layers of materials: inner
(antigas) and outer (modacrylic/nylon). The
smock is generously cut to allow complete
freedom of movement. It has a large front flap
pocket for gloves and so forth and a sleeve
patch where you can place detector paper
for easy visibility. You can make quick and
easy adjustments with hook-and-pile fasteners
at the wrist and waist. The trousers are made
of the same two layers of material and have
suspender-type fittings located at the waist and
across the shoulders. Hook-and-pile fasteners are
located at the base of each leg for adjustment.
Figure 6-9.-Chemical-protective overgarment.
The chemical-protective overgarment is issued in
a plastic envelope that is pressure packed, air
evacuated, and heat sealed. It is then placed in
a polyethylene bag and heat sealed. The over-
garment has a shelf life of 5 years when unopened.
The protective overgarment protects against
all CBR agents and is permeable to water vapor.
Once removed from its protective envelope, it has
a shelf life of 14 days in a nonchemical environ-
ment. If it is opened but uncontaminated, keep
it for training purposes. Once exposed to chemical
contamination, the overgarment provides 6 hours
of continuous protection, after which it should
The following donning procedures include the
use of the chemical-protective glove set and
footwear covers (overboots):
Don the trousers. Tighten the waist by
using the hook-and-pile fasteners.
Bring the straps over the shoulders and
cross them at the chest. Insert the straps
into the belt loops and secure snugly.
Don the parka.
Secure the bottom of the parka with hook-
Raise the trouser legs.
Don the chemical-protective footwear
cover (see fig. 6-10).
Attach tie laces (in the center) to the
toe loop. Be sure the laces are even (see
fig. 6-10, view 1).
Put one lace through A and one
through B from the inside to the out-
side and pull until snug. Make sure the
toe loop is over the top of your shoe (see
fig. 6-10, view 2).
Put one lace through C and one
through D (on the opposite side of the
foot, crossing the instep) from inside to
outside. Pull until snug (see fig. 6-10,
Cross the laces over the instep.
Thread the laces through A and B
again, from inside to outside (see fig.
6-10, view 4).
Cross the laces over the instep again and
pull them until snug.
Wrap the laces behind the ankle and
back to the front. Pull until snug and
tie securely (see fig. 6-10, view 5).
Pull the trouser legs down over the
footwear covers and secure with the hook-
Don the mask.