Table 12. --Facility engineering and design: Average cost estimates per pound of 



output, 1964 1/ 



Annual operation 



: Cobalt 



60 



: X-ray machine 



: 1-kw. facility 



: 3-kw. facility 



: 3-kw. facility 



2 , 000 hours 



0.43 

 : 0.22 



0.16 

 0.08 



0.16 



4 , 000 hours 



0.08 







l/ Assuming only 1 facility is built. The estimates include 8-year straight-line 

 depreciation plus 6 percent return to the purchaser on the initial engineering and 

 design costs. The estimated engineering and design costs by facility size are (1) 

 1-kw.— $50,000; and (2) 3-kw. --$55,000. 



Table 13. — Post-harvest life span of selected fresh produce in retail stores, and in 

 cold storage with and without radiation-pasteurization 



Fresh 

 commodity 



Display in retail 

 store l/ 



Commercial cold 

 storage ware- 

 house 2/ 



Maximum extension : Probable max- 

 of life span in : imum doses for 

 cold storage after: acceptability 

 radiation pasteur-: of product 

 ization : 3/ 



Strawberries. 

 Grapefruit . . . 



Oranges 



Peaches: 



Unripe 



Ripe 



Tomatoes : 



Mature 

 green 



Ripe 



Days 



1-2 

 4.5 

 4.5 



2-3 



2-3 



Days 



7-10 

 30-45 

 35-85 



15-30 



15-45 

 8-10 



Days 



4/ Double 



NA 

 It 30 



4/Double 

 3/4 days 



NA 

 3/4-8 days 



Kilorads 

 225 

 200 

 200 



300-400 



l/ Maintaining Produce Quality in Retail Stores (10) . 



2/ The Commercial Storage of Fruits, Vegetables and Florist and Nursery Stocks (23). 



3/ Maxie, E. C. and Sommer, N. F. Radiation Technology in Conjunction with Post- 

 Harvest Procedures as a Means of Extending the Shelf 'Life of Fruits and Vegetables. In 

 Summaries of Fourth Annual Atomic Energy Commission Food Irradiation Contractors Meet- 

 ing, Oct. 21-22, 1965, CONF 641002, in process of publication by Div. of Isotopes 

 Devlpmt. and Div. Biol, and Med., U.S. Atomic Energy Comn. , Washington, D.C. 



4/ Radiation-Preservation of Selected Fruits and Vegetables (12). 



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