For radiological contamination, use an AN/PDR-27 Series or AN/VDR-2 RADIAC
meter to determine the extent and location of contamination inside the
vehicle.
If there is contamination, determine the intensity of the
contamination of the vehicle. If the contamination has an intensity greater
than 0.33 cGy, the negligible risk, the interior of the vehicle must be
decontaminated. Use hot, soapy water to wash the contaminated areas. Use a
sponge to mop up the water and the contamination.
4.
Station 4.
Rinse.
The objective of this station is to remove the DS2 from the vehicle. The
vehicle is sprayed with water from top to bottom. Take care to rinse the
undercarriage.
This station used approximately 200 gallons of water.
Failure to remove all DS2 from the vehicle may cause false positive readings
at Station 5. If high water pressure systems, M12A1 PDDA or M17 LDS, are
not available, large volume water pumps, 65-GPM Pumps, should be used.
5.
Station 5.
Check.
Decontamination completeness is checked at this station.
This station
determines whether the vehicle has a negligible risk or still has
significant contamination remaining.
Detection procedures will vary
depending on the type of contamination.
If significant contamination is
found on the vehicle, the vehicle will be recycled to Station 2 for chemical
contamination or Station 1 for radiological contamination.
a. Chemical.
The CAM is used to check for the presence of vapor from residual liquid
contamination. A one bar or lower reading on the CAM indicates a negligible
risk.
Once the CAM indicates the presence of vapor contamination, M8
Detector Paper is used to verify the presence of liquid contamination. If
it is suspected that both the CAM and M8 Detector Paper are producing a
false positive, use an M256 Chemical Detector Ticket to confirm or deny the
presence of contamination.
If the vehicle has significant contamination
remaining, recycle it.
There will be desorption of chemical agents from the surfaces after
decontamination.
On CARC-painted surfaces, the desorption of vapors will
stop sooner than alkyd-painted surfaces.
Consider this when checking
decontaminated items for overall decontamination effectiveness.
4-22
CM2300
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