ML21278A118

2 to Updated Final Safety Analysis Report, Chapter 4, Appendix 4A.0 Calvert Cliffs Reactor Coolant Pump Flow Measurement

ML21278A118
Person / Time
Site:	Calvert Cliffs
Issue date:	09/07/2021
From:	Exelon Generation Co
To:	Office of Nuclear Reactor Regulation
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NEI 99-04
Download: ML21278A118 (1)

Text

APPENDIX 4A 4A.0 CALVERT CLIFFS REACTOR COOLANT PUMP FLOW MEASUREMENT 4A.1

SUMMARY

The reanalysis of Chapter 14 accidents under the assumption of fuel densification (CENPD-106) utilized a reactor coolant flow rate of 139.5x10 6 lb/hr. This is equivalent to an average of 92,500 gpm/pump. The analysis presented herein shows that with a measured average pump flow of 96,100 gpm the pump flow is assured to be 92,500 gpm under conditions of wors t case measurement uncertainties. The predicted pump flow is 96,665 gpm.

CALVERT CLIFFS UFSAR 4A.1-1 Rev. 47