Administrative Rules of Montana
Department 37 - PUBLIC HEALTH AND HUMAN SERVICES
Chapter 37.14 - RADIATION CONTROL
Subchapter 37.14.7 - Standards for Protection Against Radiation
Rule 37.14.709 - PERMISSIBLE DOSES, LEVELS, AND CONCENTRATIONS: EXTERNAL SOURCES IN UNRESTRICTED AREAS

(1) It is the intent of this rule to limit radiation levels so that it is unlikely that individuals in unrestricted areas would receive a dose to the whole body in excess of 0.5 rem in any 1 year. If, in specific instances, it is determined by the department that this intent is not met, the department may, pursuant to ARM 37.14.116, impose such additional requirements on the licensee or registrant as may be necessary to meet the intent.

(2) Except as authorized by the department pursuant to (3) of this rule, no licensee or registrant shall possess, use, or transfer sources of radiation in such a manner as to create in any unrestricted area from such sources of radiation in his possession:

(3) Any person may apply to the department for proposed limits upon levels of radiation in unrestricted areas in excess of those specified in (2) of this rule resulting from the applicant's possession or use of sources of radiation. Such applications should include information as to anticipated average radiation levels and anticipated occupancy times for each unrestricted area involved. The department will approve the proposed limits if the applicant demonstrates to the satisfaction of the department that the proposed limits are not likely to cause any individual to receive a dose to the whole body in any period of 1 calendar year in excess of 0.5 rem.