Exelon defines "low power operations" for BWRs - Mode Switch in Startup/Hot Standby & < 10% power; and for PWRs - Tavg > 525 deg F, reactor critical, & indicated neutron power on power range channels < 2%. We don't define "extended period of time", but we do discuss actions if we do operate for an extended period of time (Ops Director approval, contingencies & training, etc).
Mark Vandermyde Reactor Engineering Supervisor Clinton Power Station
-----Original Message----- From: respvr@retaqs.com [mailto:respvr@retaqs.com]On Behalf Of Fago, Carl D Sent: Friday, September 26, 2008 12:45 PM To: RE Supervisors Subject: [Respvr] SOER 07-1 Low Power Ops
Question for the group...
SOER 07-1 provides the admonition to discourage low power operation for an extended period of time.
How have you defined "low power operation" and "extended period of time"?
We're proposing defining "low power operation" as operation with the turbine offline. And "extended period of time" as 24 hours greater than the planned outage schedule (the assumption here is that the outage planning process has evaluated the risks of operation within the plan).
Is our proposal more or less conservative than your equivalent?
Thanks!
Carl
Carl D. Fago
Reactor Engineering Supervisor
Oconee Nuclear Station
Duke Energy Carolinas
Phone: (864) 885-3047
Fax: (864) 885-3374
Email: mailto:cdfago@duke-energy.com cdfago@duke-energy.com
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