Step 5. Based on the above information, the commander established the OEG of no more than 50
cGy for Company B in this operation.
(b) Establish OEG when the total cumulative dose is UNKNOWN. The commander plans
to commit Company D in a radiologically contaminated area. Company D is a RES-1 unit, but the total
cumulative dose is unknown. The commander will accept a moderate risk. What OEG will the
commander establish for Company D?
Step 1. You do not know the total cumulative dose of the unit.
Step 2. You know that the commander does not want to exceed a moderate risk.
Step 3. You determine from the degree-of-risk exposure chart (Table 3-2) that a RES-1 unit can
receive an additional dose of up to 30 cGy before exceeding a moderate risk.
Step 4. Based on the information above, the commander established the OEG of no more than 30
cGy for Company D in this operation.
(4) Use the OEG.
(a) It is 6 October. The commander plans to commit Company B on 7 October in a
radiologically contaminated area. The commander will accept a moderate risk. The RES chart (Figure 3-
5) is checked.
The marks in the date columns are upright tally marks, each representing 10 cGy (rad).
Figure 3-5. RES Chart
(b) The RES of Company B is RES-1. The commander notes from Table 3-2 that a RES-
1 unit may receive a dose less than or equal to 30 cGy and not exceed a moderate risk. Therefore, the
commander establishes the OEG of no more than 30 cGy for Company B in this operation. The
commander then examines the estimate of hazard shown on the contamination chart provided by the
Division NBCC, or the company has the NBC specialist confirm (calculate) the total dose that Company
B will receive if the company enters at a specific time and leaves within a time limit. If it does not exceed
the OEG, the S3 and the surgeon are consulted. They advise the commander of the potential of Company
B's personnel to successfully accomplish the mission. The steps discussed above usually precede
finalization of an operation plan. They are also accomplished routinely through normal staff action.