L-12-213, Core Operating Limits Report, Cycle 18
| ML12165A532 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/02/2012 |
| From: | Allen B FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-12-213 | |
| Download: ML12165A532 (25) | |
Text
{{#Wiki_filter:FENOC 5501 North State Route 2 FirstEnergyNuclear Operating Company Oak Harbor,Ohio 43449 Barry S. Allen 419-321-7676 Vice President- Nuclear Fax: 419-321-7582 June 2, 2012 L-12-213 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
Davis-Besse Nuclear Power Station Docket No. 50-346, License No. NPF-3 Core Operating Limits Report, Cycle 18 Pursuant to the requirements of Davis-Besse Nuclear Power Station (DBNPS) Technical Specification 5.6.3, "CORE OPERATING LIMITS REPORT (COLR)," FirstEnergy Nuclear Operating Company hereby submits the DBNPS Cycle 18 COLR, Revision 0. There are no regulatory commitments contained in this submittal. If there are any questions or if additional information is required, please contact Mr. Phil H. Lashley, Supervisor - Fleet Licensing, at (330) 315-6808. Sincerely, 194<- Barry S. Allen
Enclosure:
FirstEnergy Nuclear Operating Company, Davis-Besse Unit 1, Cycle 18, Core Operating Limits Report, Revision 0 cc: NRC Region III Administrator NRC Resident Inspector NRC Project Manager Utility Radiological Safety Board pv
Enclosure L-12-213 FirstEnergy Nuclear Operating Company, Davis-Besse Unit 1, Cycle 18, Core Operating Limits Report, Revision 0 (Twenty-Three Pages Follow)
Davis-Besse Cycle 18 COLR Page 1 of 23 Revision 0 FIRSTENERGY NUCLEAR OPERATING COMPANY DAVIS-BESSE UNIT I CYCLE 18 CORE OPERATING LIMITS REPORT Prepared by L,,.-. i , sf/, z. D. B. Kelley 0f Reviewed by L lR C4_/oi.. P. R. Gilles Approved by ,* d LIST OF EFFECTIVE PAGES Page 1 through 23 Rev. 0
Davis-Besse Cycle 18 COLR Page 2 of 23 Revision 0 1.0 Core Operating Limits This CORE OPERATING LIMITS REPORT for DB-1 Cycle 18 has been prepared in accordance with the requirements of Technical Specification 5.6.3. The Core Operating Limits have been developed using the methodology provided in Reference 2.0 (1). The licensed length of Cycle 18 is 600 EFPDs. The following cycle-specific core Operating Limits, Protective Limit and Flux -A Flux -Flow Reactor Protection System Allowable Values are included in this report:
- 1. SL 2.1.1.1 Reactor Core Safety Limits
- 2. LCO 3.1.1 SHUTDOWN MARGIN (SDM)
- 3. LCO 3.1.3 Moderator Temperature Coefficient (MTC)
- 4. LCO 3.1.7 Position Indicator Channels
- 5. LCO 3.1.8 PHYSICS TESTS Exceptions - MODE 1
- 6. LCO 3.1.9 PHYSICS TESTS Exceptions - MODE 2
- 7. LCO 3.2.1 Regulating Rod Insertion Limits
- 8. LCO 3.2.2 AXIAL POWER SHAPING ROD (APSR) Insertion Limits
- 9. LCO 3.2.3 AXIAL POWER IMBALANCE Operating Limits
- 10. LCO 3.2.4 QUADRANT POWER TILT (QPT)
- 11. LCO 3.2.5 Power Peaking Factors
- 12. LCO 3.3.1 Reactor Protection Systems (RPS) Instrumentation Function 8: (Flux - AFlux - Flow) Allowable Values
- 13. LCO 3.9.1 Boron Concentration
- 14. TRM 8.1.3 Rod Program 2.0 References
- 1) BAW-10179P-A, Rev. 8, "Safety Criteria and Methodology for Acceptable Cycle Reload Analyses", May 2010.
Davis-Besse Cycle 18 COLR Page 3 of 23 Revision 0 Table of Contents Page Reactor Core Safety Limits Figure 1 AXIAL POWER IMBALANCE Protective Limits 2817 MWt, Davis-Besse 1, Cycle 18 5 SHUTDOWN MARGIN (SDM) Table 1 Shutdown Margin Requirements 6 Moderator Temperature Coefficient (MTC) Table 2 Moderator Temperature Coefficient Limit 7 Position Indicator Channels Table 3 Absolute Position Indicator (API) / Relative Position Indicator (RPI) Agreement Limit 8 Regulating Rod Insertion Limits Figure 2a Regulating Group Position Operating Limits 0 to 300 +/- 10 EFPD, Four RC Pumps -- 2817 MWt RTP Davis-Besse 1, Cycle 18 9 Figure 2b Regulating Group Position Operating Limits After 300 +/- 10 EFPD, Four RC Pumps -- 2817 MWt RTP Davis-Besse 1, Cycle 18 10 Figure 2c Regulating Group Position Operating Limits 0 to 300 +/- 10 EFPD, Three RC Pumps -- 2817 MWt RTP Davis-Besse 1, Cycle 18 11 Figure 2d Regulating Group Position Operating Limits After 300 +/- 10 EFPD, Three RC Pumps -- 2817 MWt RTP Davis-Besse 1, Cycle 18 12 AXIAL POWER SHAPING ROD (APSR) Insertion Limits Figure 3 APSR Position Operating Limits 13 AXIAL POWER IMBALANCE Operating Limits Figure 4a AXIAL POWER IMBALANCE Operating Limits 0 EFPD to EOC, Four RC Pumps -- 2817 MWt RTP Davis-Besse 1, Cycle 18 14 Figure 4b AXIAL POWER IMBALANCE Operating Limits 0 EFPD to EOC, Three RC Pumps -- 2817 MWt RTP Davis-Besse 1, Cycle 18 15 QUADRANT POWER TILT (QPT) Table 4 QUADRANT POWER TILT Limits 16
Davis-Besse Cycle 18 COLR Page 4 of 23 Revision 0 Table of Contents Page Power Peaking Factors Table 5 Power Peaking Factors - Fa 17 Table 6 Power Peaking Factors - FNAH 19 Figure 5 Maximum Allowable Radial Peak for FNAH 19 Table 7 Maximum Allowable Radial Peak for FNAH 20 Reactor Protection System (RPS) Instrumentation Figure 6 Flux-AFlux-Flow (or Power/Imbalance/Flow) Allowable Values 21 Boron Concentration Table 8 Refueling Boron Concentration Limit 22 Rod Program Figure 7 Control Rod Core Locations and Group Assignments 23
Davis-Besse Cycle 18 COLR Page 5 of 23 Revision 0 Figure 1 AXIAL POWER IMBALANCE Protective Limits 2817 MWt RTP, Davis-Besse 1, Cycle 18 This Figure is referred to by Technical Specification 2.1.1.1 120,- (-45.20, 110.2) (39.12, 110.2) _110 4 PUMP LIMIT inn3 .1. (-49.08, 100.0) 100 (49.08, 100.0) (-45.20, 90.9) (39.12, 90.9)
-- ____________nn 9
(-49.08, 80.7) ( 804 3 PUMP LIMIT (49.08, 80.7) 704 UNACCEPTABLE UNACCEPTABLE OPERATION 0uJ OPERATION 0 60+ a-50+ 0-40+ ACCEPTABLE I- OPERATION G) 0U FOR SPECIFIED 30+ RC a- PUMP COMBINATION 20+ 10+
-80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 AXIAL POWER IMBALANCE, %
Required Measured Reactor Coolant Flow to Ensure Pumps Operating Flow, qpm Compliance, qpm 4 380,000 389,500 3 283,860 290,957
Davis-Besse Cycle 18 COLR Page 6 of 23 Revision 0 Table 1 Shutdown Margin Requirements Verify SHUTDOWN MARGIN per the table below. REQUIRED SHUTDOWN TECHNICAL SPECIFICATIONS APPLICABILITY MARGIN LCO REFERENCE MODE 1* > 1 %Ak/k 3.1.4, 3.1.5 MODE 2* 1 %Ak/k 3.1.4, 3.1.5, 3.3.9 MODE 3 1 %Ak/k 3.1.1, 3.3.9 MODE 4 >1 %Ak/k 3.1.1, 3.3.9 MODE 5> 1 %Ak/k 3.1.1, 3.3.9 MODE 1 PHYSICS TESTS 1 %Ak/k 3.1.8 Exceptions** >"1%_k/k_3.1.8 MODE 2 PHYSICS TESTS 1 %Ak/k 3.1.9 Exceptions
- The required Shutdown Margin capability of 1%Ak/k in MODE 1 and MODE 2 is preserved by the Regulating Rod Insertion Limits specified in Figures 2a through 2d as required by Technical Specification 3.2.1.
- Entry into Mode 1 Physics Tests Exceptions is not supported by existing analyses. For example, Regulating Rod Shutdown Margin Insertion Limits assumptions may not be met and as such requires actual shutdown margin to be > 1 %Ak/k via alternate verification or calculation.
Davis-Besse Cycle 18 COLR Page 7 of 23 Revision 0 Table 2 Moderator Temperature Coefficient Limit These limits are referred to by Technical Specifications 3.1.3
- 1. Lower Limit:
MTC at HFP ->-3.69x10- 4 Ak/k/°F
- 2. The following Upper Limits may not be exceeded without prior NRC approval:
MTC <0.9 x 10-4 Ak/k/°F when Thermal Power <95% RTP MTC <0.0 x 10-4 Ak/k/F when Thermal Power ->95%RTP
- 3. The following Upper Limits may not be exceeded for operation in Modes 1 and 2:
1.OE-04 9.OE-05 ....................... I------------------------- .2-8.0E-05 --------------------------------------------------------------------------------------------------------------------- 0 7IOE-05 ------------------- ------------------------------------------------------------------------- 0 6.0E-05 ------------------------------ -------------- I------------------------- I ----------------------- CL E, 5.OE-05 ----------------------------------------- --------------------------------------------------------------------------- z-4.0E ---------------------------------------------------------------------------------------------- 3.OE-05 -------------------------------------------------------------------------------------------- 0 ------------------------------------------------------------------------ 2- 2.0E-05 - -------------------------------------------- 1.0E-05 ------------------------ 4------------------------------------- 0.0E+00 0 20 40 60 80 100 Percent Full Power
Davis-Besse Cycle 18 COLR Page 8 of 23 Revision 0 Table 3 Absolute Position Indicator (API) / Relative Position Indicator (RPI) Agreement Limit This limit is referred to by Technical Specifications 3.1.7 The absolute position indicator channels and the relative position indicator channels agree within 3.46%.
Davis-Besse Cycle 18 COLR Page 9 of 23 Revision 0 Figure 2a Regulating Group Position Operating Limits 0 to 300 +10 EFPD, Four RC Pumps--2817 MWt RTP Davis-Besse 1, Cycle 18 This Figure is referred to by Technical Specifications 3.2.1 110 100 90 w Unacceptable 80 Operation 0 tY
-J Operation 70 Shutdown " Restricted I-l Ll Margin 60 Limit 0
50 40 0 30 Acceptable a- Operation 20 0 0 25 50 75 100 125 150 175 200 225 250 275 300 Rod Index, %Withdrawn 0I 75 I 100 I I I I Group 5 0 25 75 100 1 1 I Group 6 01 25 100 1 I Group 7 Note 1: A Rod Group overlap of 25 +/- 5% between sequential withdrawn groups 5 and 6, and 6 and 7, shall be maintained. Note 2: Instrument error is accounted for in these Operating Limits. Note 3: Maximum plotted power level is 100.37 %RTP.
Davis-Besse Cycle 18 COLR Page 10 of 23 Revision 0 Figure 2b Regulating Group Position Operating Limits After 300 +10 EFPD, Four RC Pumps--2817 MWt RTP Davis-Besse 1, Cycle 18 This Figure is referred to by Technical Specifications 3.2.1 110 100 90 Lu o w 0~ 80 Unacceptable aJ Operation 70 I. I- - Operation 0 60 Restricted LU 50 Shutdown 0 Margin Limit 40 (-O 0 30 Acceptable Operation 20 10 0 0 25 50 75 100 125 150 175 200 225 250 275 300 Rod Index, %Withdrawn 01 751 100 I I ! I Group 5 01 25 75 100 1 I Group 6 U 25 100 1 1 I Group 7 Note 1: A Rod Group overlap of 25 +5% between sequential withdrawn groups 5 and 6, and 6 and 7, shall be maintained. Note 2: Instrument error is accounted for in these Operating Limits. Note 3: Maximum plotted power level is 100.37 %RTP.
Davis-Besse Cycle 18 COLR Page 11 of 23 Revision 0 Figure 2c Regulating Group Position Operating Limits 0 to 300 +10 EFPD, Three RC Pumps--2817 MWt RTP Davis-Besse 1, Cycle 18 This Figure is referred to by Technical Specifications 3.2.1 110 100 90 E, wu 0 80 70 Unacceptable Operation 0~ 60 Shutdown Operation 50 Margin Restricted Limit 0 (w 40 30 20 Acceptable Operation I I I I I I I I I 10 0 0 25 50 75 100 125 150 175 200 225 250 275 300 Rod Index, %Withdrawn 10 751 100I Group 5 01 25 75 100 I I I I I I Group b 0o 25 100 I Group 7 Note 1: A Rod Group overlap of 25 +/- 5% between sequential withdrawn.groups 5 and 6, and 6 and 7, shall be maintained. Note 2: Instrument error is accounted for in these Operating Limits. Note 3: Maximum plotted power level is 75.37 %RTP.
Davis-Besse Cycle 18 COLR Page 12 of 23 Revision 0 Figure 2d Regulating Group Position Operating Limits After 300 +10 EFPD, Three RC Pumps--2817 MWt RTP Davis-Besse 1, Cycle 18 This Figure is referred to by Technical Specifications 3.2.1 110 100 90 E
-J
- 13. 80 0
o 0 70 , LU Unacceptable a- 60
- Operation JI-cii 50 I Shutdown Restricted]
40 Margin Operation I I I I II I I F Limit ci) 13-30 20 10 I I Acceptable II Operation I I I IJ l I I-III t I 0 ¶I IIIII I I II I III I1 l lll l ll l Il l l llI l l I II 0 25 50 75 100 125 150 175 200 225 250 275 300 Rod Index, %Withdrawn 01 75 100I I I I Group 5 0 25 75 100 1 I Group 6 0 25 100 1 1 I Group 7 Note 1: A Rod Group overlap of 25 +5% between sequential withdrawn groups 5 and 6, and 6 and 7, shall be maintained. Note 2: Instrument error is accounted for in these Operating Limits. Note 3: Maximum plotted power level is 75.37 %RTP.
Davis-Besse Cycle 18 COLR Page 13 of 23 Revision 0 Figure 3 APSR Position Operating Limits This Figure is referred to by Technical Specifications 3.2.2 Before APSR Pull: 0 EFPD to 525 +/- 10 EFPD, Three or Four RC pumps operation* Lower Limit: 0 %WD Upper Limit: 100 %WD After APSR Pull: 525 +/- 10 EFPD to End-of-Cycle Three or Four RC pumps operation* Insertion Prohibited (maintain > 99%WD) **
- Power restricted to 75.37% for 3-pump operation.
- Reinsertion is allowed only during the end of cycle shutdown when the reactor power is equal to, or less than, 30%RTP.
Davis-Besse Cycle 18 COLR Page 14 of 23 Revision 0 Figure 4a AXIAL POWER IMBALANCE Operating Limits 0 EFPD to EOC, Four RC Pumps--2817 MWt RTP Davis-Besse 1, Cycle 18 This Figure is referred to by Technical Specification 3.2.3 IN' II I I I I I -I I I I I I II I1I1I1II II I Restricted. Restricted' Region Region II I I I-) (L II 4-w0
.W 4+
-tD *50 TT TH
-C 40- Permissible Operating -I 0 Region 0~
-LI 0
0 A 20 ff 10 aI
-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 AXIAL POWER IMBALANCE % LEGEND Note 1: Instrument error is accounted for in these Operating Limits. FULL INCORE Note 2: The Excore Imbalance Operating Limits are available for use when the Full Incore EXCORE system is non-functional. o Note 3: Maximum plotted power level is 100.37 %RTP.
Davis-Besse Cycle 18 COLR Page 15 of 23 Revision 0 Figure 4b AXIAL POWER IMBALANCE Operating Limits 0 EFPD to EOC, Three RC Pumps-2817 MWt RTP Davis-Besse 1, Cycle 18 This Figure is referred to by Technical Specification 3.2.3 10'777=
- Restricted Restricted
- Region Region
ý70C I I LL
*C
-50 t 0u
-40 Permissible 4 Operating Region -
C E i lE~~l l ] ] l1 l1 1lIt#11 (D 20 20 0 0
'a-0
-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 AXIAL POWER IMBALANCE % LEGEND Note 1: Instrument error is accounted for in these Operating Limits. FULL INCORE Note 2: The Excore Imbalance Operating Limits are available for use when the Full Incore EXCORE system is non-functional. G Note 3: Maximum plotted power level is 75.37 %RTP.
Davis-Besse Cycle 18 COLR Page 16 of 23 Revision 0 Table 4 QUADRANT POWER TILT Limits This Table is referred to by Technical Specifications 3.2.4 From 0 EFPD to EOC Steady-state Limit Steady-state Limit QUADRANT for THERMAL for THERMAL POWER TILT as POWER < 60% POWER >60% Transient Limit Maximum Limit measured by: (%) (%) (%) (%) Symmetric Incore 7.90 4.34 10.03 20.00 Detector System
Davis-Besse Cycle 18 COLR Page 17 of 23 Revision 0 Table 5 Power Peaking Factors - FQ This Table is referred to by Technical Specifications 3.2.5 The measured FQ shall be increased by 1.4% to account for manufacturing tolerances and further increased by 7.5% to account for measurement uncertainty before comparing to the limits. Heat Flux Hot Channel Factor FQ Fa shall be limited by the following relationships: FQ < LHRallow (Bu) / [LHR av
- P] (for P 5 1.0)
LHRa"°w (Bu) = See the following tables LHRavg = 6.4209 kW/ft at 2817 MWt for Batches 18, 19 and 20 Mark-B-HTP fuel P = ratio of THERMAL POWER / RATED THERMAL POWER Bu = fuel burnup (MWd/mtU) UO, Fuel (Mark-B-HTP) - All Batches LHR ALLOw kW/ft(a) 0 34,000 62,000 Core Elevation (ft) MWd/mtU MWd/mtU MWd/mtU 0 17.6 17.2 13.1 2.506 17.6 17.2 13.1 4.264 17.5 17.1 13.1 6.021 17.4 17.1 13.1 7.779 17.0 16.7 13.1 9.536 16.2 16.3 13.1 12.000 15.4 15.5 12.4 (a) Linear interpolation for allowable LHR between specified burnup points is valid for these tables.
Davis-Besse Cycle 18 COLR Page 18 of 23 Revision 0 Table 5 (continued) 4 wt% Gad Fuel (Mark-B-HTP) - All Batches LHR ALLwkW/ft(a) 0 34,000 62,000 Core Elevation (ft) MWd/mtU MWd/mtU MWd/mtU 0 15.8 15.7 11.8 2.506 15.8 15.7 11.8 4.264 15.7 15.5 11.8 6.021 15.6 15.5 11.8 7.779 15.3 15.2 11.8 9.536 14.6 14.8 11.8 12.000 13.8 14.1 11.2 6 wt% Gad Fuel (Mark-B-HTP) -Batch 20C LHRALLOw kW/ft(a) 0 34,000 62,000 Core Elevation (ft) MWd/mtU MWd/mtU MWd/mtU 0 15.3 15.4 11.4 2.506 15.3 15.4 11.4 4.264 15.2 15.4 11.4 6.021 15.1 15.4 11.4 7.779 14.8 15.0 11.4 9.536 14.1 14.7 11.4 12.000 13.3 14.0 10.8 8 wt% Gad Fuel (Mark-B-HTP) - Batches 18A3, 18A4; 18C2, 19A, 19C, and 20A LHRALLOw kW/ft(a) 0 34,000 62,000 Core Elevation (ft) MWd/mtU MWd/mtU MWd/mtU 0 14.9 14.9 11.0 2.506 14.9 14.9 11.0 4.264 14.8 14.9 11.0 6.021 14.8 14.9 11.0 7.779 14.4 14.5 11.0 9.536 13.7 14.2 11.0 12.000 13.0 13.5 10.4 (a) Linear interpolation for allowable LHR between specified burnup points is valid for these tables.
Davis-Besse Cycle 18 COLR Page 19 of 23 Revision 0 Table 6 Power Peaking Factors - FNAH This Table is referred to by Technical Specifications 3.2.5 Enthalpy Rise Hot Channel Factors - FNA. FNAH < MARP [1 + (1/RH) (1 - P/Pm)] (see note below) MARP = Maximum Allowable Radial Peak, see MARP Figures and data Tables P = THERMAL POWER / RATED THERMAL POWER and P < 1.0 Pm = 1.0 for 4-RCP operation Pm = 0.75 for 3-RCP operation 1/RH = 0.3 Note: The measured FNAH shall be increased by 5.0% to account for measurement uncertainty prior to comparing to the limits. Figure 5 Maximum Allowable Radial Peak for FNAH* 2.1 - 11- T -_-I- 1 7 1 1 -1 -11
- "1 " 1,7 1- 1 1,-7 1- - 7 1I 1 - 41 T I- 1 ý- "I I"1 - -X/
I , 0,2-2.0 1 & -- L -F--**--I--J
-{ -- L --L -- --L - - -- - I--
,=*..*7 --"- -- -"-
* -7, *--T-
-k I- -J
, 7 -*-, -X/L=0.54
-I -T -r' I 7 T' 1 7 7 -7 7- -* / = .
li-I q TI - -GT - -F -I-7 -I-- -I 1 F 7 ] I I -- x/L = 0.4 1.9
-~~~~~~ ÷ *-*-i- * -*--,4 L4÷ J--* * . i* -" -x/L =0.9 Q- T I1 I 7 7 I _'F -O 1I 7 / =I 0.6 L - I- J1 I i _ L -- -- --I -- -- -- -1 - I = 0 .-8
-- -1 T -f- -1 - 71- - I-1 r - '-i r -r ---- - t-1
.* 1.7 - -- - -i 1 -- -X/ =L 1.0
_l_~~ *_* -_-. -* 7f T 7 I 7 T I
© 1.6 - -7 -"--r-- -- -- - - -F
. . .. - -I--
-I-I T F 1 7 T - i T-r 1.5 -I- += - -I +-1--t-7 1* -
-I J 1I I J IL -- _ Ii + -t L L I -I
- 14. I I T II- i 7- I I I I t I*- - -I - I I - I I - i - - - -
- I- T-- - - -* t- 1 t-- I- - - r---
-* - - - -I- - -I - - - -m - - - -.
1.3 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Axial Peak
- Linear interpolation is acceptable.
Davis-Besse Cycle 18 COLR Page 20 of 23 Revision 0 Table 7 Maximum Allowable Radial Peak for FNAH Axial Axial Axial Height MARP Axial Height MARP Peak x/L (inches) Limit Peak x/L (inches) Limit 0.0 0.00 1.91828 0.0 0.00 1.81332 0.1 14.30 1.91912 0.1 14.30 1.72752 0.14 20.02 1.91916 0.14 20.02 1.70690 0.2 28.60 1.91893 0.2 28.60 1.75024 0.4 57.20 1.91727 0.4 57.20 1.78912 1.1 0.5 71.50 1.91659 1.6 0.5 71.50 1.81428 0.6 85.80 1.91652 0.6 85.80 1.75934 0.8 114.40 1.91726 0.8 114.40 1.59848 0.88 125.84 1.87428 0.88 125.84 1.53299 0.9 128.70 1.87570 0.9 128.70 1.53906 1.0 143.00 1.76005 1.0 143.00 1.43922 0.0 0.00 2.01903 0.0 0.00 1.71924 0.1 14.30 2.01905 0.1 14.30 1.62855 0.14 20.02 2.01902 0.14 20.02 1.60598 0.2 28.60 2.01760 0.2 28.60 1.64367 0.4 57.20 2.01566 0.4 57.20 1.68971 1.2 0.5 71.50 2.01506 1.7 0.5 71.50 1.71250 0.6 85.80 2.01472 0.6 85.80 1.69234 0.8 114.40 1.86510 0.8 114.40 1.53913 0.88 125.84 1.79631 0.88 125.84 1.47793 0.9 128.70 1.79807 0.9 128.70 1.48398 1.0 143.00 1.69236 1.0 143.00 1.38831 0.0 0.00 2.12863 0.0 0.00 1.63428 0.1 14.30 2.11181 0.1 14.30 1.53965 0.14 20.02 2.09817 0.14 20.02 1.51542 0.2 28.60 2.12998 0.2 28.60 1.54992 0.4 57.20 2.12313 0.4 57.20 1.60163 1.3 0.5 71.50 2.06182 1.8 0.5 71.50 1.61867 0.6 85.80 1.97202 0.6 85.80 1.62746 0.8 114.40 1.79424 0.8 114.40 1.48433 0.88 125.84 1.72438 0.88 125.84 1.42669 0.9 128.70 1.72615 0.9 128.70 1.43160 1.0 143.00 1.62069 1.0 143.00 1.34126 0.0 0.00 2.03596 0.0 0.00 1.55767 0.1 14.30 1.96785 0.1 14.30 1.46097 0.14 20.02 1.95126 0.14 20.02 1.43560 0.2 28.60 1.99602 0.2 28.60 1.46745 0.4 57.20 2.03723 0.4 57.20 1.52104 1.4 0.5 71.50 1.98993 1.9 0.5 71.50 1.53278 0.6 85.80 1.89829 0.6 85.80 1.54669 0.8 114.40 1.72980 0.8 114.40 1.43258 0.88 125.84 1.65869 0.88 125.84 1.37762 0.9 128.70 1.66256 0.9 128.70 1.38298 1.0 143.00 1.55477 1.0 143.00 1.29807 0.0 0.00 1.91811 0.1 14.30 1.84228 0.14 20.02 1.82345 0.2 28.60 1.86637 0.4 57.20 1.90396 1.5 0.5 71.50 1.90467 0.6 85.80 1.82883 0.8 114.40 1.66024 0.88 125.84 1.59179 0.9 128.70 1.59788 1.0 143.00 1.49464
Davis-Besse Cycle 18 COLR Page 21 of 23 Revision 0 Figure 6 Flux-AFlux-Flow (or Power/Imbalance/Flow) Allowable Values This Figure is referred to by Technical Specification 3.3.1
-17.0, 10 .0 I I 4 IPMP 1
--1 LIMIý11T 1'zfiT 1111'1111111111l 108.0 61.6) lII I-j(30.6, 77.1) 1 I 3 PUMP --
EXAMPLE
-UNACCEPTABLE
- OPERATION
-I- UNACCEPTABLE OPERATION I 4-ACCEPTABLE OPERATION 0
FOR SPECIFIED RC
.0-PUMP I I I I rqIti i iii II II I l tII l
-60 40 -30 -20 -10 0 10 20 30 40 50 60 AXIAL POWER IMBALANCE, %
The 3 pump example curve shows allowable values for an approximately 25% flow reduction for three pump operation (283,860 gpm). The actual setpoint will be calculated by the Reactor Protection System and will be directly proportional to the actual RC flow with three pumps. These limits are based on Cycle 9 and are conservative relative to the actual Cycle 18 limits.
Davis-Besse Cycle 18 COLR Page 22 of 23 Revision 0 Table 8 Refueling Boron Concentration Limit This limit is referred to by Technical Specifications 3.9.1 The minimum required boron concentration for use during refueling shall be sufficient to ensure a Keff of 0.95 or less, plus an additional 1% AkMk conservatism allowance for uncertainties.
Davis-Besse Cycle 18 COLR Page 23 of 23 Revision 0 Figure 7 Control Rod Core Locations and Group Assignments This Figure is referred to by Technical Requirements 4-- N Manual 8.1.3 (X) I : 3 4 5 6 7 8 9 10 11 12 13 14 15 I I II 4 A 46' B i 2 5 5 2 i C 7 8 7 8 7 i D 2 5 5 2 -F- E 4 8 6 3 6 8 4 -- F 5 1 5 -G (W) 6 7 3 4 3 7 6 -H (Y) 5 1 5 -K 4 8 6 3 6 8 4 -L 2 5 5 2 M iiL 7 jj+/-8 7 -- N 8 7 2 5 5 2 0 4 6 4 P D WX ]Group Number (Z) Group No of Rods Function Group No of Rods Function 1 4 Safety 5 12 Control 2 8 Safety 6 8 Control 3 4 Safety 7 8 Control 4 9 Safety 8 8 APSRs Total 61}}