1) the level of review a plan requires (such as <10% requires shift supervision, >10% requires shift management, >50% requires station management)
Any plan > 15% (or at OPS request) where we have more than 6 hours to prepare, requires a formalized plan from Reactor Engineering. These plans must be approved by the Ops Shift Manager, Control Room SRO, and RO at the controls prior to commencement.
2) or
2) when a reactivity plan must be revised (such as > 1 hour delay, rods > 10 steps from the predicted value, current power level step >2% from predicted)
IF Reactor Engineering is providing continuous coverage for a maneuver
IF actual plant conditions deviate from the guidance by * 3% Rated Thermal Power, maneuver guidance SHALL be updated per Limit and Precaution 6.3.1.
IF control rod position is within 15 steps of Rod Insertion Limit OR
IF T-Avg deviates more than three degrees from prediction or T-Ref at any time step, it is recommended that maneuver guidance be updated per Limit and Precaution 6.3.2. Maneuver guidance MAY also be updated at the discretion of Operations and Reactor Engineering.
Additional question
How do other stations incorporate any ramp rate restrictions that may apply? (Ramp rate alarm, operator training, ramp plan)
The ramp rates are accounted for during the generation of the plan.
Jon-Michael Vandergriff Catawba Nuclear Station Reactor Engineering (803) 701-4029 jvandergriff@dukeenergy.commailto:jvandergriff@dukeenergy.com Rule #113 - Don't look for opportunities; make them. ________________________________ From: Keller, Lee A Sent: Monday, June 30, 2008 9:33 AM To: Vandergriff, Jon-Michael Subject: FW: [Pwrrm] Reactivity plan approval and revisions/ramp rate alarm
Pls answer.
________________________________ From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Adina.K.Lafrance@dom.com Sent: Monday, June 30, 2008 9:20 AM To: pwrrm@retaqs.com Subject: [Pwrrm] Reactivity plan approval and revisions/ramp rate alarm
SOER 07-01 recommendation 3 stated that "plans for significant reactivity changes are reviewed and approved by appropriate station and shift operations management..." and "If plant conditions delay power changes, the reactivity plan is revised to meet the new plant conditions and approved by management".
Does anyone have specific thresholds for:
1) the level of review a plan requires (such as <10% requires shift supervision, >10% requires shift management, >50% requires station management)
or
2) when a reactivity plan must be revised (such as > 1 hour delay, rods > 10 steps from the predicted value, current power level step >2% from predicted)
Additional question
How do other stations incorporate any ramp rate restrictions that may apply? (Ramp rate alarm, operator training, ramp plan)
Thank you.
Adina LaFrance
Nuclear Analysis & Fuel Reactor Engineer Surry Power Station Email: Adina.K.LaFrance@Dom.com Phone: 757-365-2658 Pager #: 4290 CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and/or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.