Re[2]: Japan to switch to MOX? -Reply

[Bob Boston <BOSTON@POC.LMAES.LMCO.COM>]

>Correct, ie that is NOT true. Pu-239 and 241 are fissile. Pu-238 is not. I'm
>not
>sure about the other Pu isotopes but I suspect that they are also not
>issile.
>Can anybody give a definitive answer?
___________________________________

This information is from the TRUPACT-II Safety Analysis Report.  This
document references all isotopes of fissile concern to Pu-239 fissile
gram equivalent (FGE).

Isotope             Pu-239 FGE
Pu-236             0.0
Pu-238             0.131
Pu-239             1.0
Pu-240             0.0225
Pu-241             2.25
Pu-242             0.0075
Pu-244             0.0

Hope this helps.

Robert Boston
Criticality Safety Engineer
Lockheed Martin Advanced Environmental Systems
208-234-3578 fax 3550
boston@poc.lmaes.lmoc.com

These thoughts are my own.