Wee be eka ate ee ee ee ee ee eeead TABLE V Occuvational Exsosure Guidance for Insoluble Alona Emitters, Maximum Permissible Lung Particle Burden Cancer risk dse to 5 rem/yr quepnps) /? Assumed Risk in Particle wnol@ Doay exsosure 78 1/1000 1/2000 1/10,000 4.5x1l074 0.45 0.9 1073 l. 2. 10. 2.3 4.6 23. (best estimate) reduction of ine axisting MPLS and MPC, by = 10,000. It 15 recommended nera that that could de and is reccommended. not fu Iactar of the nest estimate af ng racdisnucilides in hot varticles. omoromisea u) (v ot ri 0 th iD ‘a if i] ur ao a r- tr fu i " Nd wW < 0D ctl) 3 re fu hr tes ud and "gy < cr a Ww afl 1 fu i— . 2.3x1973 4.5 This is a somewhat the moszt conservative valua Thrus, the recommended MPLP3 for ctecupational exsosure from hot particles of alpna- 77 / Tha numeer of sarticles recuiree to give a cancer risx 2cual to thac iron uniform radciacion. Té/ Source: BEI-m Resort, Od. tit., op. 391. Tra MPLP3B covr2spondins ta a luag cancer risx of 3x1973 fua to 15 ram/ur lang cose sno 6,3 ! 4 [3ETR Zasert, Op. cit., p. 154] are r assumed narticle risxs of 1/1003, 0.03, 0.06 1/2390 and