TABLE 2 



DATA ON CERTAIN RADIOISOTOPES WHICH MAY BE PRESENT IN WASTE 

 FROM NUCLEAR POWERED SHIP REACTORS 



Isotope 



Cobalt 60 

 Iron 55 

 Iron 59 

 Chromium 51 

 Copper 64 

 Tantalum 182 

 Zinc 65 

 Cesium 137 

 Strontium 90 

 Zirconium 95 

 Niobium 95 

 Ruthenium 106 

 Cerium 144 

 Iodine 131 



Concentration Factor*** Sea Water to; 

 Invertebrates Fish Fish 



(edible ports) (soft parts) (skeleton) 



Partial Permissible Concentration in Sea Water 

 for Cases (see footnotes); 



(1) 



(2) 



(3) 



(4) 



(5) 



(p,c/ml) (tic/ml) (|ic/ml) (|ic/ml) (^.c/ml) 



* From Title 10, Chapter 1, Port 20, Code of Federal Regulations, Revised, 1959 (proposed). 



** From Title 10, Chapter 1, Part 20, Code of Federal Regulations, Revised, 1959 (proposed), for the general public. 

 Same as 1/lOth the values given in Handbook 52, Revised, 1959 (proposed). 



*** Data from Revelleet d. (1957); Ketchum and Chipman (1958); except as otherwise noted below. 



(1) Harbors, estuaries, and inshore waters within 12 miles of the coast line (Zone 1 and Zone 2). 



(2) The outer continental shelf, beyond 12 miles from the shore line, in known fishing areas (Zone 3a). 



(3) The outer continental shelf, beyond 12 miles from the shore line, in regions not designated as known fishing areas 

 (Zone 3b). 



(4) The open sea, in known fishing areas (Zone 4a). 



(5) The open sea, in regions not designated as known fishing areas (Zone 4b). 



(6) No experimental data. Values approximated on basis of experimental data on biologically similar elements. 



(7) Calculated from Martin (1957). 



(8) Dunster (1956). 



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