NAC459.323. Weighting factors.

     1. For calculating the effective dose equivalent, the values of the weighting factor are as follows:

Organ Dose Weighting Factors
Organ or Tissue	Weighting Factor
Gonads...................................................................................................................... 0.25
Breast........................................................................................................................ 0.15
Red bone marrow..................................................................................................... 0.12
Lung.......................................................................................................................... 0.12
Thyroid..................................................................................................................... 0.03
Bone surfaces............................................................................................................ 0.03
Remainder................................................................................................................. 0.30
Whole Body.............................................................................................................. 1.00

     2. For the purposes of weighting the remainder dose, 0.30 results from 0.06 of each of five remainder organs, excluding the skin and the lens of the eye, that receive the highest doses.

     3. The use of other weighting factors for external exposure must first be approved by the Division.

     (Added to NAC by Bd. of Health, eff. 1-18-94)