Section 7.18.210. External radiation limits in controlled area.

	(a)  A registrant shall possess, use, receive, and transfer sources of ionizing radiation in a controlled area with adequate safeguards to assure that an individual worker's total occupational exposure to all sources of ionizing radiation in the registrant's possession during any span of a calendar year, from both external and internal exposures, does not exceed the following dose limits:  
		(1) an annual limit which is the lesser of the  
			(A) total effective dose equivalent of five rems (0.05 Sv); or  
			(B) sum of the deep-dose equivalent and the committed dose  	equivalent to any individual organ or tissue other than the lens of the eye of 50  	rems (0.5 Sv); and  
		(2) the annual limits to the lens of the eye, to the skin of the whole body, and to the skin of the extremities are a  
			(A) lens dose equivalent of 15 rems (0.15 Sv); and  
			(B) shallow-dose equivalent of 50 rem (0.5 Sv) to the skin of the whole body or to the skin of any extremity.   
	(b)  The assigned deep dose equivalent must be for the part of the body receiving the highest exposure.  The assigned shallow dose equivalent must be the dose averaged over the contiguous 10 square centimeters of skin receiving the highest exposure.  The deep dose equivalent, lens dose equivalent, and shallow dose equivalent may be assessed from surveys or other radiation measurements for the purpose of demonstrating compliance with the occupational dose limits, if the individual monitoring device was not in the region of highest potential exposure, or the results of individual monitoring are unavailable.  
	(c)  If an individual works for more than one registrant and is exposed, or likely to be exposed, to ionizing radiation from multiple sources, the total combined exposures from all registrants may not exceed the limits specified in (a) of this section.  A registrant shall maintain a record for each individual worker that incorporates the annual exposure information for all registrants that the individual works for.  

Authorities

18.60.475;18.60.485

Notes

Reference

7 AAC 18.250
7 AAC 18.280
7 AAC 18.430
7 AAC 18.520

Authority

AS 18.60.475 AS 18.60.485

History

Eff. 4/9/2009, Register 190