The four main ways to deal with temperature buildup are to --
Reduce the work rate.
Increase rest periods.
Lower the MOPP level.
Increase water intake.
b. Wind Speed.
Wind speed has an effect in that winds aid in the dissipation of body
heat when troops can open or partially remove their protective
clothing. Wind speed also impacts upon the threat since high winds
decrease the probability that the enemy will employ chemical agents.
This decreased probability allows the commander to designate a lower
MOPP level. High winds dissipate agent clouds, hasten evaporation,
and prevent buildup of high vapor concentrations from existing
contamination. These effects can influence a decision to allow a
reduction in the MOPP level.
PART C -IMPLEMENT MISSION-ORIENTED PROTECTIVE POSTURE (MOPP)
1.
Defense Against Chemical or Biological Attacks.
One defense against chemical or biological attacks is the use of
Mission-Oriented Protective Posture (MOPP). Commanders also have a
Mask-Only option in some situations.
a. MOPP Protection.
MOPP is a flexible system for protection against chemical agents that
is used in chemical warfare to facilitate mission accomplishment. The
need of soldiers to wear individual protective equipment led to the
concept of MOPP to balance protection with the threat, temperature,
and urgency of the mission.
NOTE
The protective overgarment and hood may be worn open or
closed, depending on the temperature, in MOPP levels less
than MOPP 4. MOPP 4 provides the maximum protection and
requires that all protective clothing and equipment be worn
and mask hood be closed.
Protection increases with progression of the levels, but efficiency
decreases correspondingly; so, selecting the MOPP level that provides
the best balance requires judgment.
Commanders can raise or lower the amount of protection through
five levels: MOPP Zero through MOPP 4, as shown on next page. Figure
2-2 summarizes the five MOPP Levels.
IS0345
2-8
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