FW: Additional info on plastic degradation

["Guinn, Charles D" <cdguinn@SANDIA.GOV>]

In a message dated 2/13/2002 8:25:45 AM Eastern Standard 

Time, cdguinn@sandia.gov writes: 



> Exactly what has happened.  For future reference we 
>
>   are trying to determine at what rad. level this 
>
>   weakening/brittleness begins to occur, so that we don't store items with those 
>
>   rad. levels in bags again. 
>
> Charlie 
>
>   


That being the case, just use 100K rad as 

the limit. This should be below the point of degradation for all plastics. 

 For higher levels, use paint cans. They seal tightly and do not degrade. 

 Do some research on the various plastic materials to permit for bagging 

higher levels and establish a rule so you don't get in trouble. 

Best 

wishes.  By the way, you might post our private discussion on the RADSAFE 

list for others to see. 



John Andrews 
Knoxville, 

Tennessee