Re: Sewer Solubility

[John Pickering <johnjp@email.sjsu.edu>]

Debby Steva,

We do a few simple test. We have operations inside and outside of our
Nuclear Science Facility. Those programs which we suspect need more controls
are performed in our NSF. This facility has two 5,000 gallon catch tanks
that are fed by all of the drain lines in the NSF. When a tank is full we
collect several samples. The samples are tested for soluable and insoluable
alpha and betas. We compare the results to a very restrictive nuclide on our
license (Sr-90). We calculate the activity and release (if we are below
regulatory limits - so far we are below). More testing is very time
consuming and we do not have the resources. 

We are aloud to release activity based upon the flow rates of the campus. To
date, we have not exceed this rate just using the contents of the catch tanks. 

The data is on an Excel form we created. If you would like a copy of the
form, I can email it to you. You enter the data and the program performs the
calculations.

John Pickering
San Jose State University
johnjp@email.sjsu.edu


At 06:33 AM 8/31/1999 -0500, you wrote:
>For anyone performing sewer releases - how are you demonstrating or
>testing
>for solubility these days?  What size filters are you using (if you are)
>and how did
>you choose?
>
>Debby Steva
>dps3c@Virginia.edu
>
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