Palo Verde provides the following response.
We had a recent drill where the release had stopped. The EOF had one
Particulate and Iodine air sample from a field team downwind from the release
point with no activity present on the filter media (using hand held frisker).
The EOF asked for a back-up air sample. The drill ended before we received the
back-up air sample results. This is not written down in procedures but seems to
be a reasonable position.
Gordon Nelson
Radiological Engineering
Palo Verde Nuclear Generating Station
Phone (623) 393-5200
Cell (623) 238-0542
Pager (877) 466-7534
[email protected]
From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Monday, May 14, 2012 10:54 AM
To: [email protected]
Subject: Powernet: EP question on releases
Got an odd question on releases in emergency exercises/events. It's pretty
easy to declare that a release has started - you have effluent monitors and/or
field teams. But how do you determine when a release has stopped if it's
unmonitored? The field team may have confusing data due to ground deposition.
Anyone have a handy thumb-rule? Like - if open window/closed window readings
are the same at ground level and waist level? Or open minus closed at ground
level = zero, you claim no deposition? If you're pressed for time to declare a
release has been terminated, you might not be able to wait for marinellis to be
taken and counted back in a lab. Anyone have something good in their pocket
already?
Thanks, Eric
Eric M. Goldin, CHP
Southern California Edison
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