PART C: PREPARE AN NBC 5 (NUCLEAR) REPORT
contamination overlay is to provide the commander and staff with a means of estimating or evaluating the
effect of the radiological contamination hazard on current or future mission requirements. The format of
the radiological contamination overlay is not prescribed, but will depend on whether it is used for
estimation or evaluation purposes. The following paragraphs illustrate some of the possible presentation
formats.
a. Radiological contamination overlays to be used for evaluation purposes must provide the most
detailed information possible. The minimum information required is the
(1) Map designation and orientation data.
(2) Nuclear burst and ground zero identification.
(3) H-hour.
(4) Reference time.
(5) Decay exponent.
(6) Time of preparation and validity.
(7) Source of the contamination fallout, the neutron-induced contamination, or the radiological
agents.
(8) Militarily significant contamination perimeters, such as
New fallout (H-hour to H + 48 hours): 20 cGyph at H + 1 for short-term
(24-hour) occupancy, 10 cGyph at H + 1 if longer than 24-hours occupancy of a contaminated area is
expected.
Old fallout (H + 48 hours) or radiological agents: 1 cGyph at the time of preparation.
Neutron-induced contamination: 2 cGyph at H + 1 hour.
(9) Dose rate information (contour lines and key dose rates, if possible).
b. Additional information, desirable but not essential, is the
(1) Time-of-completion lines for fallout.
(2) Reference-time dose for key crossings or probable stay times.
prepared for evaluation purposes does not lend itself to briefings and similar requirements. Here, a
presentation of the current radiological contamination picture is required which will enable the viewer to
visualize the current hazard and the decay of the hazard over a short (3- to 6-hour) period of time in the
future. This form of intelligence is of particular use for the commander's briefing and operations of
CM2306
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