It has been said many times that radiation is here to stay and that 
man has got to learn to live with it. This usually refers to environ- 
mental radioactivity. But the same general philosophy also applies 
to the nuclear design specialist who needs to take radiation into 
account in the selection of materials and components for nuclear 
systems. Sometimes he’s got to worry about the detrimental effects 
of radiation. Sometimes he's able to make use of possible bene- 
ficial effects of radiation. 
Whatever the case, there’s one thing that’s certain—there’s little 
data available on radiation effects and what there is is not too 
thoroughly understood nor available in collated form. 
In this special report, the Editors of Nucteonics have assembled mate- 
rial that gives a picture of where we stand in our knowledge of the 
subject and collects data that will be useful to the nuclear designer. 
Flow Radiation Affects 
Materials 
79 
