‘In making the above comparison, we pelieve that 1 a the upper limit of the radiation induced risk should be used. cautioned that its estimate may be too Tne BEIR Committee high or too low. too low is i/ One reason for suggesting that it is thak th ce Linear hypothesis is used as a basis for extrapolating from high dose-high dose rate data to low dose-low rate Kecant evidence sugcests that situations. the linear hypothe Sis may underestimate the effect of low L s dos¢-low das2 rate irradiation. been summarized by Dr. The latest iniormation pas Karl 2. Morgan who concluded: Freauently in the literature it is stated that tne linear hypothesis 2s avery c vative assun soe eine on. During the however Many studi probably i that at low <4 somatic aamag that from ¢«-i usually greater than would b on the linear hypothesis. 8/ Thus, there is little justification for relying cn the lower estimate of the radiation induced risk and prudent health practice would indicate that the upper limit should be used. 7/ R/ to When this is done, Ibid., inspection of Table 2 indicatas that ».90. Morgan, Harl 2., Suggested Peduction of Permissidle Exposure Plutonium ant Other Transuranium Elements, Industrial “rlene, Amyast, LI75. Journal of Anorican