Reply from Crystal River: We do not have any pre-determined release termination criteria. But I would think we could use the "lack of" release definition criteria to help determine when a release has stopped. Our release criteria definitions are as follows:
Release (Florida Nuclear Plant Emergency Notification Form): Any of the following: * Exceeding the warning setpoint in count rate on an effluent monitor that is a direct result of an event that has initiated an emergency declaration OR * Radioactivity detected by environmental monitoring OR * OTSG tube rupture > 10 gpm with either of the following: * Prolonged steaming to the atmosphere from the affected OTSG OR * an unisolable steam leak outside RB from the affected OTSG OR NOTE: Design Basis Leakage or other suspected leakage should NOT be categorized as a release until confirmed by environmental monitoring. * Radioactivity escaping unmonitored from the Plant. [This last bullet is intended to capture those events where we have conditions that would lead to a release, but maybe we don't have monitoring teams out yet to confirm (e.g., LOCA in Aux Building with release monitor OOS, or spill in containment with equipment hatch off and no negative pressure).] Chuck Burtoff Radiation Protection 352-795-6486 x3012 From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, May 14, 2012 1:54 PM To: [email protected] Subject: [Marketing Mail] 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 <[email protected]> ----------------------------------- Powernet - a service of the Health Physics Society Power Reactor Section Powernet archives at http://www.mail-archive.com/[email protected]/ Reply to: [email protected] If Questions, contact Mike Russell, CHP at [email protected]
