External surfaces of the crane that are marked with painted or stamped lettering will
not withstand repeated decontamination with STB or DS2 without degradation of
this lettering. The recommended method of decontamination for these areas is
warm, soapy water.
Areas that will entrap contaminants, making efficient decontamination extremely
difficult, include the following: space behind knobs and switches on the control
panel, exposed heads of screws, areas adjacent to and behind exposed wiring
conduits, hinged areas of access doors, spaces behind externally-mounted
equipment data plates, retaining cords for external receptacle covers, door and
access panel locking mechanisms, fuel cap, NATO slave receptacle, areas around
tie-down/lifting points, crevices around access doors, and external screens
covering ventilation areas. Replacement of these items, if possible, is the preferred
method of decontamination. Conventional decontamination methods should be
used on these areas, while stressing the importance of thoroughness and the
probability of some degree of continuing contact and vapor hazard.
The use of overhead shelters or chemical protective covers is recommended as an
additional means of protection against contamination in accordance with FM 3-5. If
using covers, care should be taken to provide adequate space for air flow and
For additional NBC information, refer to FM 3-3 and 3-4.