[Code of Federal Regulations]
[Title 32, Volume 2]
[Revised as of July 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 32CFR218.2]

[Page 414-415]
 
                       TITLE 32--NATIONAL DEFENSE
 
        CHAPTER I--OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED)
 
PART 218_GUIDANCE FOR THE DETERMINATION AND REPORTING OF NUCLEAR RADIATION 
 
Sec. 218.2  General procedures.

    The following procedures govern the approach taken in dose 
determination:
    (a) Use individual film badge data where available and complete, for 
determining the external gamma dose.
    (b) Identify group activities and locations for period(s) of 
possible exposure.
    (c) Qualitatively assess the radiation environment in order to 
delineate contaminated areas. If no activities occurred in these areas, 
and if no other potential for exposure exists, a no dose received 
estimate is made.
    (d) If partial film badge data are available, define group(s) of 
personnel with common activities and relationships to radiation 
environment.
    (e) Using standard statistical methods, verify from the distribution 
of film badge readings whether the badged sample adequately represents 
the intended group.
    (f) Calculate the mean external gamma dose, with variance and 
confidence limits, for each unbadged population. Assign a dose equal to 
95% probability that actual exposure did not exceed the assigned dose.
    (g) If badge data is not available for a statistical calculation, 
conduct a dose reconstruction.
    (h) For dose reconstruction, define radiation environment through 
use of all available scientific data, e.g., measurements of radiation 
intensity, decay, radioisotopic composition.
    (i) Quantitatively relate activities shielding, position, and other 
factors to radiation environment as a function of time. Integrate dose 
throughout period of exposure.
    (j) Where possible, calculate mean dose with confidence limits; 
otherwise

[[Page 415]]

calculate best estimate dose or, if data are too sparse, upper limit 
dose.
    (k) Compare calculations with available film badge records to verify 
the calculated doses. Whether or not film badge data is available, 
calculate initial and internal doses where identified as a meaningful 
contribution to the total dose.