HANDLING OF RADIOISOTOPES WITH ANIMALS AND PLANTS 



117 



Separate rooms or areas are provided for eonnting, animal quarters, 

 monitoring, medium-level work, and high-level work. The main features 

 are proper air flow and provision for monitoring at entrances to the 

 medium- or high-level areas, which should serve to (;ontrol the spread of 

 contamination to the low-level areas. The hot laboratory should be 



Feet 

 I — I — I — I — I — I 

 1 2 3 4 5 6 



Radiochemical 

 hood 



Lab bench 



Isotope 

 storage 



^ 



^ 



<^ 



<5 



13 



1} 



Floor cabinets 





Floor cabinets 



Counting room 



Files 



Table 



Y\G. 4-2. Typical two-room radiochemical laboratory of about 700 ft^. 

 cate air-flow pattern. 



Arrows iiidi- 



equipped with only that furniture which is necessary for the operations; 

 there should be room for flexibility in the construction of barricades and 

 shielding. Some suggested minimum floor-space requirements are as 

 follows: counting room, 70 ft^; low-level laboratory, 180 ft-; monitoring 

 room, 80 ft-; medium-level laboratory, 150 ft^; hot laboratory, 130 ft^. 

 A satisfactory arrangement for the use of radioisotopes with farm 



