(1) Each licensee or registrant shall supply appropriate personnel monitoring equipment to, and shall require the use of such equipment by:

(a) Each individual who enters a restricted area under such circumstances that he receives, or is likely to receive, a dose in any calendar quarter in excess of 25% of the applicable value specified in ARM 37.14.705(2) .

(b) Each individual under 18 years of age who enters a restricted area under such circumstances that he receives, or is likely to receive, a dose in any calendar quarter in excess of 5% of the applicable value specified in ARM 37.14.705(2) .

(c) Each individual who enters a high radiation area.

(d) Licensees or registrants who use personnel dosimeters to satisfy a requirement of this subchapter shall utilize personnel dosimetry services approved by the department.