Section 325.60602. Exposure of individuals to radiation in restricted areas.

(1) Except as provided in subrule (2) of this rule, no employer shall possess, use, or transfer sources of ionizing radiation in such a manner as to cause any individual in a restricted area to receive in any period of 1 calendar quarter from sources in the employer's  possession  or control a dose in excess of the limits specified in table G-18.

TABLE G-18

	Rems per calendar quarter
Whole body: Head and trunk; active bloodforming organs; lens of eyes; or gonads	1 ¼
Hands  and  forearms;  feet and ankles	18 ¾
Skin of whole body	7 ½

(2)     An employer may permit an individual in a restricted area to receive doses to the whole body greater than those permitted under subrule (1) of this rule, if all of the following apply:

(a)     During any calendar quarter the dose  to   the  whole  body   does  not exceed 3

rems.

(b)           The    dose    to    the    whole     body,    when     added   to   the      accumulated

occupational dose to the whole body, does not exceed 5 (N-18) rems, where "N" equals the individual's age in years at his or her last birthday.

(c)      The employer maintains adequate past and current exposure records which show that the addition of such a dose will not cause the individual to exceed the amount authorized in this rule. As used in this rule, "dose to the whole body"  includes  any dose to the whole body, gonad, active bloodforming organs, head and trunk, or lens of the eye.

(3)     An employer shall not permit any employee who is under 18 years of age to receive in any period of 1 calendar quarter a dose in excess of 10 percent of the limits specified in table G-18.

(4)        "Calendar quarter" means any 3-month period determined in 1 of the following ways:

(a)      The first period of any year may begin on any date in January if the second, third, and fourth periods accordingly begin on the same date in April, July, and October, respectively, and the fourth period extends into January of the succeeding year, if necessary to complete a 3-month quarter.During the first year of use of this method of determination, the first period for that year shall also include any additional days in January preceding the starting date of the first period.

(b)      The first period in a calendar year of 13 complete, consecutive calendar weeks; the second period in a calendar year  of   13  complete, consecutive weeks; the third period in a  calendar  year  of  13   complete, consecutive calendar weeks; the fourth period in a calendar  year  of  13 complete, consecutive calendar weeks.  If at the end of a calendar year there are any days not falling within a complete calendar week of that year, such days shall be included within the last complete calendar week of that year. If at the beginning of any calendar year there are days not falling within a complete calendar week of that year, such days shall be included within the last complete calendar week of the previous year.

(c)      The 4 periods in a calendar year may consist of the first 14 complete, consecutive calendar weeks; the next 12 complete,  consecutive calendar weeks, the next 14 complete, consecutive calendar weeks, and the last 12 complete, consecutive calendar weeks. If at the end of a calendar year there are any days not falling within a complete calendar week  of   that year, such days shall be included (for purposes of these

rules) within the last complete calendar week of the year. If at the beginning of any calendar year there are days not falling within a complete calendar week of that year, such days shall be included (for purposes of these rules) within  the  last complete week of the previous year.

History: 2009 AACS.