FM 3-19.4 - Army Electronic Publications & Forms - U.S. Army

FM 3-19.4
Operational Decontamination
J-44. Operational decontamination allows a force to
continue fighting and sustain its mission after being
contaminated. It limits the hazard of transferring
contamination by removing most of the gross
contamination on equipment and nearly all the
contamination on soldiers. This speeds the weathering
process and allows clean areas (people, equipment, and
terrain) to stay clean. Following operational
decontamination, soldiers who have removed sources of
vapor contamination from their clothing and equipment
unmask temporarily in hazard-free areas to eat, drink,
and rest.
J-45. Accomplish operational decontamination using the
assets of the parent unit. Make use of the following
decontamination techniques:
• Vehicle wash down.
• MOPP gear exchange.
J-46. Conduct these procedures at the same time. They
are best performed at squad level. Vehicles and
personnel that are not contaminated should not go
through either technique. Conduct vehicle wash down as
far forward as possible. It is normally performed using
the power-driven decontamination equipment (PDDE)
crew with assistance from the squad decontamination
crew. It is most effective if started within 1 hour after
contamination.
J-47. The two steps in vehicle wash down are as follows:
Step 1. Button up the vehicle and secure the
equipment.
Step 2. Wash down the vehicle and the equipment
with hot, soapy water for 2 to 3 minutes.
J-48. Because speed is important, do not check vehicles
for contamination after vehicle wash down. Remove only
gross contamination.
J-20 Nuclear, Biological, Chemical Defense