Fort Calhoun Station responses in Blue...

Reactor Engineers

I have a major Integration effort coming up for Dominion in regard to reactivity management.

Some general questions on Common Standards that we all use. Please let me know what folks do for the following

Who performs the 1/M during approach to crit? Operators or REs - STAs perform with RE overview.

Are the RE's an integral member of the team or in an oversite role (review ECCs and 1/M's)? REs are part of the Operations Dept. STAs receive similar training as the REs. A SRO, STA and one of the REs will perform independent ECCs. Comparison are made and the RE evaluates/resolves any differences. The RE, along with the Shift Manager, attempts to maintain an oversight role.

Who performs the ECC (ECP), RE or the STA or the SRO? Usually all. RE compares and resolves differences.

Who reviews the ECC, (ECP), RE or the STA or the SRO? RE and Shift Manager/or Control Room Supv

How many people HAVE to review the ECC? Reviewed by RE. Signed of in StartUp procedure by SM/CRS.

Does Ops assign a reactivity management SRO to major reactivity changes (SU, maneuver up and down, 75% and back to 100%???? Yes for Planned Power Manuevers. No if not available for Emergent Shutdowns.

Are all Rx start ups IPTE's (Infrequently Performed Test or Evolutions)? No.

How many plants have pre-developed reactivity plans (ReMA's) in the control room for rapid downpowers? FCS has 21 plans. They are for 5%/hr, 15%/hr, 30%/hr and downpowers to 90%, 80%, 70%, 50%, 30%, 12%, and S/D with 12 hours of Stabalization built-in to combat Xenon.

How often are they updated? updated every 1,000 MWD/MTU (~ every month). The Automated SIMULATE scripts require about 4 hours of work each month to update all the plans.

Are recurring work orders "flagged" electronically to alert the operators to evolutions that may impact reactivity management? All Work Orders have Impact Statements which include a Reactivity Management section. The Impact Statements are completed by Licensed Operators in the Work Control Center.

Does RE and Ops meet after RM evolutions for a post job critique? Not officially. If so, for all power maneuvers, only major ones (i.e. 0-100%)??? N/A

Thanks in advance for your help in this regard. I will gladly share all info with you once I compile it.

Regards

Hugh McKenney Dominion Resources Services, Inc. Reactor Engineering Supervisor Phone: 8-759-2359 or 860 447-1791 x2359 Email: Hugh_E_McKenney@Dom.com

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