1. (1) This rule contains requirements which must be satisfied by licensees or registrants who propose, pursuant to ARM 37.14.705 (3) to permit individuals in a restricted area to receive exposure to radiation in excess of the limits specified in ARM 37.14.705 (2) .

2. (2) Before permitting any individual in a restricted area to be exposed to radiation in excess of the limits specified in ARM 37.14.705 (2) , each licensee or registrant shall:

   1. (a) obtain a certificate on department form MRH-30 or on a clear and legible record containing all the information required in that form, signed by the individual, showing each period of time after the individual attained the age of 18 in which the individual received an occupational dose of radiation; and
   2. (b) calculate on department form MRH-30, in accordance with the instructions appearing therein, or on a clear and legible record containing all the information required in that form, the previously accumulated occupational dose received by the individual and the additional dose allowed for that individual under ARM 37.14.705 (3) .

   3. (c) In the preparation of department form MRH-30, or a clear and legible record containing all the information required in that form, the licensee or registrant shall make a reasonable effort to obtain reports of the individual's previously accumulated occupational dose. For each period for which the licensee or registrant obtains such reports, he shall use the dose shown in the report in preparing the form. In any case where a licensee or registrant is unable to obtain reports of the individual's occupational dose for a previous complete calendar quarter, it shall be assumed that the individual has received the occupational dose specified in whichever of the following columns apply:

      	Column 1	Column 2
      	Assumed Dose in Rems for Calendar Quarters Prior to	Assumed dose in Rems for Calendar Quarters Beginning on or after
      Part of Body	January 1, 1961	January 1, 1961
      Whole body, gonads, active blood-forming organs, head and trunk, lens of eye	3 3/4	1 1/4

   4. (d) The licensee or registrant shall retain and preserve records used in preparing department form MRH-30 until the department authorizes their disposition. If calculation of the individual's accumulated occupational dose for all periods prior to January 1, 1961, yields a result higher than the applicable accumulated dose value for the individual as of that date, as specified in ARM 37.14.705 (3) (b) , the excess may be disregarded.

Authorizing statute(s): Sec. 75-3-201, MCA

Implementing statute(s): Sec. 75-3-201, MCA

History: NEW, 1980 MAR p. 1069, Eff. 3/28/80; TRANS, from DHES, 1996 MAR p. 433; TRANS, from DEQ, 2000 MAR p. 189.