400 

 « 300 

 o 200 















ORNL-DWG 68-9546 















_^Xe 

















o 



x 100 

































2 









250 500 750 1000 



AVERAGE PARTICLE SIZE , fj. 



Fig. C-2. 133 Xe Sorption vs Particle-Size Distribution 



ORWL UNDERWATER SURVEY SYSTEM 



Since most of the surveying required to measure the dispersion and trans- 

 port of tagged sand occurs in the surf zone, the detector system was de- 

 signed to operate in breakers as veil as in deep water. Sleds have been 

 used as vehicles for transporting detectors along the bottom. Because 

 sleds are easily tipped in turbulent water and are subject to snagging on 

 underwater obstruction such as rock ledges and large rocks, an open mesh 

 steel ball was designed for use as the detector vehicle (Fig. C-3).This 



Fig. C-3. Radiation Detection System 



C-9 



