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Follow-up on Pool Irradiators, Analysis of Water



 I had two responses from people with pool irradiators. One uses water analysis
 as a back-up to in line monitoring of filters, the other was unspecified. Both
 count large samples (500 ml to 1 liter) with Ge gamma spectroscopy systems for
 fairly long times (on the order of 50,000 seconds) resulting in LLDs below 1
 nanocurie per liter. Any activity in the appropriate region for the nuclide of
 interest (Co-60) forces further investigation.

 Thanks,
 Richard W. Edwards, Analyst            The Boeing Company
 Phone/Fax: (206)393-1999/393-3060      P.O. Box 3703, M/S 6Y-38
 email: shea132@kgv2.bems.boeing.com    Seattle, WA 98124-2207