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RE: DAC for plutonium 239



There both are correct by FGR-11 (1988): 



7 pCi/M^3 = 7 e^-12 uCi/ml:  this is for Y-class



3 e^-12 uCi/ml is for W-class



 - Casper





-----Original Message-----

From: Tom [mailto:tom@xrfcorp.com] 

Sent: Friday, February 20, 2004 10:37 AM

To: radsafe@list.vanderbilt.edu

Subject: DAC for plutonium 239



Radsafers,



I am looking for the DAC for pu239.  CDC has a value of 7pCi/M^3   NRC 

reading room says its  3e^-12 uCi/ml.  Who is right?



Tom Hazlett

XRF Corporation



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