ML21307A428

Core Operating Limits Report Cycle 31 Pattern Msk Revision 0

ML21307A428
Person / Time
Site:	Surry
Issue date:	11/03/2021
From:	Standley B Dominion Energy Services, Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
21-369
Download: ML21307A428 (10)

Text

3. 2. 1. 2.0 The the This 1.0 Safety by EMF-2328(P)(A), Statistical WCAP-16009-P-A, VEP-FRD-42, REFERENCES Technical requirements Core INTRODUCTION TS Methodology ANP-3676P, TS Methodology TS TS TS Methodology Nuclear TS Evaluation TS Channel TS TS TS TS TS TS TS TS TS TS TS Operating 3.12.B.1 3.12.B.1 Treatment Table 3.12.F 3.12.B.1 3.12.A.l.a, 3.12.A.1, 3.1.E 2.1 Table 3.12.F-DNB 3.12.B.1 3.12.A.l.a, 3.12.A.1, TS 3.1.E 2.3.A.2.e-Overpower 2.3.A.2.d-Overtemperature 2.1 Specifications Factor -Moderator -Safety Rev. Enthalpy -Moderator -Safety of "Surry 4.1-2A- -DNB 4.1-2A-Surry Limits and for: Report "PWR and for: and TS for: 2.2-A, and TS TS of "Realistic TS TS 3.12.A.2, Limit, TS 3.12.A.2, Limit, Technical dated Fuel-Vendor Uncertainty Minimum Parameters 3.12.A.2.a, Minimum Parameters Rise TS 3.12.A.2.a, affected Report SURRY 3.12.B.2 Small 3.12.B.2 3.12.B.2 Temperature "Reload 3.12.B.2 Temperature Reactor CORE March Reactor Hot (COLR)

Break Large TS Channel TS AT by Specification

-Heat -Heat Method Frequency -Heat TS 3.12.A.3 Nuclear Frequency TS 3.12.A.3 this UNIT 2 OPERATING 19, Independent Break Core -Power AT Core 2021. LOCA 3.12.A.3.c Coefficient 3.12.A.3.c Coefficient report for ATTACHMENT Page Flux Flux (ASTRUM)," Flux Design Factor) Surry CYCLE Evaluation LOCA and for Distribution and are: 6.2.C.

Hot Hot for Hot TS 1 of7 Small Equipment and TS Methodology," Equipment and Unit LIMITS Channel Channel Evaluation Channel 3.12.C.3.b.l(b)- 3.12.C.3.b.l(b)- 31, Break TS TS 2 Cycle PATTERN Model, (Westinghouse 3.12.G-Shutdown Limits 3.12.G-Shutdown Factor Factor Tests: Factor Tests: REPORT LOCA Methodology 31 S-RELAP5 and October (Heat has Analysis," Item Control Item Control been MSK Proprietary), 22 Nuclear 22 Flux

-RCS 2017. -RCS Bank prepared Based," Using Margin Bank Hot Margin Docket as Enthalpy Serial approved Flow Insertion Flow Channel Insertion in COLR as January the accordance No. No.

supplemented Rise S2C31 50-281 21-369 Automated Factor Limits by 2005. Hot Limit NRC with and

Where: 3.2 The 3.1 specified following The 3.0 Overtemperature Reactor Safety cycle-specific OPERATING t1 ~9.

respectively, Where f(Al) P' P is the T' Tis sis ATo AT Limit, in subsections.

7 seconds is the is Core Technical the the the is the is measured qt and ~ measured Laplace Safety Reactor 0.0188 0, 0.0268 nominal nominal measured indicated parameter LIMITS and AT Limits Specification These qb when-24.0% (TS Core qt + are {(qt {-24 RCS pressurizer Tavg transform RCS percent RCS AT 2.3.A.2.d) are limits limits qb -qb)- -( qt -qb)}, operating at AT, presented (TS is the 12 RATED average at 2.1) 6.2.C

'A.4 operator, RATED P. 0 for RA 8.0}, RATED POWER pressure, have total TED seconds pressure temperature in and the THERMAL POWER, sec-POWER, Figure repeated been specifications Page POWER when when psig.. 1 developed 3 of7 (qt- ( qt -qb) ~235 A-1.

573.0°F. (Tavg), in 0

POWER in qb) ::;;(qt P. Section the > +8.0% < -24.0% psig. listed upper -qb) K3 P. 0 using 2.0.

in and ::;;+8.0% ~0.000765 the in percent RATED RA Section lower TED NRC-approved RA halves POWER RATED /psig 1.0 TED POWER