R 333.5013 Definitions; W to Y.

Rule 13. (1) "Week" means 7 consecutive days starting on Sunday. (2) "Weighting factor" wT for an organ or tissue (T) means the proportion of the risk of stochastic effects resulting from irradiation of that organ or tissue to the total risk of stochastic effects when the whole body is irradiated uniformly. For calculating the effective dose equivalent, the values of wT are as follows: ORGAN DOSE WEIGHTING FACTORS Organ or Tissue wT Gonads 0.2 5 Breast 0.1 5 Red bone marrow 0.1 2 Lung 0.1 2 Thyroid 0.0 3 Bone surfaces 0.0 3 Remainder 0.3 0 Whole Body 1.0 0 (3) "Whole body" means, for purposes of external exposure, head, trunk including male gonads, arms above the elbow, or legs above the knee. (4) "Worker" means an individual engaged in activities under a registration issued by the department and controlled by a registrant, but does not include the registrant. (5) "Year" means the period of time beginning in January used to determine compliance with the provisions of these rules. The registrant may change the starting date of the year used to determine compliance by the registrant if the change is made at the beginning of the year. If a registrant changes in a year, the registrant shall assure that no day is omitted or duplicated in consecutive years. EXEMPTIONS