Survey, Cleanup and Rehabilitation Evaluation PRK It is recommended in this context that: 1. A limit of 50 percent of the ICRP dose limits for individuals be used. This assumes that the range of annual exposure levels tor persons recaiving the higher exposures will be known. The — following values apply: - — je Gonads, red bone marrow 0.25 rem/yr Hand, and forearms; feet 3.75 rem/yr Skin, bone, thyroid 1.50 rem/yr (0.75 rem/yr, childrens thyroid) and ankles Other single organs 2. a, 0.75 rem/yr A limit for gonadal exposure of the population be 5 rems in 30 years. This is based on the genetic dose coming primarily from 137cesium, the radiological half-life of which is 30 years. x ee ¢ For P The a Coe yl? ? 2" +f en being, —bRAL vo oo sty nuoetodir |retAn oO 3 . +e ~C wR " yes 4 eee & woe UK Go ee Ake! eto Oe eS Cet a olieg bret ev evened Ce ™“ r t str tenet Thu evel cit eM Aen apf won le ote ‘fete fot. aC ee ae oncierw . LU iannt o“ teh, je [Websatede, ~ Pe ¢Laneney f . Lom ble ema +4. ) Cs? ow 4 eeilec> C.S ate /4 ee meee ee. ' & chee et Cur pe ee? ‘ na arg &O- Aw bag a lame iy ~ e,? “os ho of itwer “ 5 FF yoy 8 5 . SOP Neeroye nw witty bee : yoo4 wt, 1 Re cog o . .' yanare tree aS wey wif . hee . é oe oo Ens