CP-201101450, Core Operating Limits Report

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Core Operating Limits Report
ML11292A053
Person / Time
Site: Comanche Peak Luminant icon.png
Issue date: 10/13/2011
From: Madden F
Luminant Power, Luminant Generation Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-201101450, TXX-11130
Download: ML11292A053 (24)
v • d • e


Text

{{#Wiki_filter:Rafael Flores Senior Vice President & Chief Nuclear Officer rafael.flores@Luminant.com Luminant Power P 0 Box 1002 6322 North FM 56 Glen Rose, TX 76043 Luminant T 254 897 5550 C 817 5590403 F 254 897 6652 CP-201101450 TXX-11130 Ref: Tech. Spec. 5.6.5 October 13, 2011 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK NUCLEAR POWER PLANT DOCKET NO. 50-445 CORE OPERATING LIMITS REPORT

Dear Sir or Madam:

Enclosed is the Core Operating Limits Report for Comanche Peak Nuclear Power Plant (CPNPP) Unit 1, Cycle

16. This report is prepared and submitted pursuant to Technical Specification 5.6.5.

This communication contains no new licensing basis commitments regarding CPNPP Units I and 2. Should you have any questions, please contact Mr. J. D. Seawright at (254) 897-0140. Sincerely, Luminant Generation Company LLC Rafael Flores By: /Fred W. Madden Director, Oversight & Regulatory Affairs Enclosure - Unit 1 Cycle 16 Core Operating Limits Report c - E. E. Collins, Region IV B. K. Singal, NRR Resident Inspectors, Comanche Peak A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway - Comanche Peak

  • Diablo Canyon - Palo Verde ' San Onofre ' South Texas Project - Wolf Creek A-oct

ERX-II-002, Rev. 0 CPNPP UNIT I CYCLE 16 CORE OPERATING LIMITS REPORT September 2011 Prepared: Date: 9iZz-2oI Jhathan M. Ralston Pincipal Engineer, Westinghouse Electric Co. Reviewed: ýŽ ýA% <--. Ir v Date: ZZ OI Daniel E. Brozak>/ Principal Engineer, Westinghouse Electric Co. Reviewed: Date: _-_Z-zoj_ nrian L./Guthrie rincipal Engineer, Westinghouse Electric Co. Approved: Date: W. Jae es Boae right, Manager Westinghouse Engineering Services - Texas

DISCLAIMER The information contained in this report was prepared for the specific requirement of Luminant Generation Company LLC and may not be appropriate for use in situations other than those for which it was specifically prepared. Luminant Generation Company LLC PROVIDES NO WARRANTY HEREUNDER, EXPRESS OR

IMPLIED, OR STATUTORY, OF ANY KIND OR NATURE WHATSOEVER, REGARDING THIS REPORT OR ITS USE, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES ON MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

By making this report available, Luminant Generation Company LLC does not authorize its use by others, and any such use is forbidden except with the prior written approval of Luminant Generation Company LLC. Any such written approval shall itself be deemed to incorporate the disclaimers of liability and disclaimers of warranties provided herein. In no event shall Luminant Generation Company LLC have any liability for any incidental or consequential damages of any type in connection with the use, authorized or unauthorized, of this report or of the information in it. ii ERX-1l-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 TABLE OF CONTENTS DISCLAIMER ii TABLE OF CONTENTS iii LIST OF TABLES iv LIST OF FIGURES v SECTION PAGE 1.0 CORE OPERATING LIMITS REPORT 1 2.0 OPERATING LIMITS 2 2.1 SAFETY LIMITS 2 2.2 SHUTDOWN MARGIN 2 2.3 MODERATOR TEMPERATURE COEFFICIENT 2 2.4 ROD GROUP ALIGNMENT LIMITS 3 2.5 SHUTDOWN BANK INSERTION LIMITS 3 2.6 CONTROL BANK INSERTION LIMITS 4 2.7 PHYSICS TESTS EXCEPTIONS MODE 2 4 2.8 HEAT FLUX HOT CHANNEL FACTOR 4 2.9 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR................ 6 2.10 AXIAL FLUX DIFFERENCE 6 2.11 REACTOR TRIP SYSTEM INSTRUMENTATION 6 2.12 RCS PRESSURE, TEMPERATURE, AND FLOW DEPARTURE FROM NUCLEATE BOILING LIMITS 7 2.13 BORON CONCENTRATION 8

3.0 REFERENCES

8 iii ERX-11-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 LIST OF TABLES TABLE 1 FQ(Z) MARGIN DECREASES IN EXCESS OF 2% PER 31 EFPD PAGE 9 iv ERX-11-002, Rev. 0

COLR for CPNPP Unit-1 Cycle 16 LIST OF FIGURES FIGURE PAGE 1 REACTOR CORE SAFETY LIMITS 10 2 ROD BANK INSERTION LIMITS VERSUS THERMAL POWER 11 3 K(Z) NORMALIZED FQ(Z) AS A FUNCTION OF CORE HEIGHT 12 4 W(Z) AS A FUNCTION OF CORE HEIGHT - (150 MWD/MTU) 13 5 W(Z) AS A FUNCTION OF CORE HEIGHT (2,000 MWD/MTU) 14 6 W(Z) AS A FUNCTION OF CORE HEIGHT - (10,0.00 MWD/MTU) 15 7 W(Z) AS A FUNCTION OF CORE HEIGHT - (14,000 MWD/MTU) 16 8 W(Z) AS A FUNCTION OF CORE HEIGHT - (20,000 MWD/MTU) 17 9 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER 18 V ERX-11-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for CPNPP UNIT 1 CYCLE 16 has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Technical Specifications affected by this report are listed below: SL 2.1 LCO 3.1.1 LCO 3.1.3 LCO 3.1.4 LCO 3.1.5 LCO 3.1.6 LCO 3.1.8 LCO 3.2.1 LCO 3.2.2 LCO 3.2.3 LCO 3.3.1 LCO 3.4.1 LCO 3.9.1 SAFETY LIMITS SHUTDOWN MARGIN MODERATOR TEMPERATURE COEFFICIENT ROD GROUP ALIGNMENT LIMITS SHUTDOWN BANK INSERTION LIMITS CONTROL BANK INSERTION LIMITS PHYSICS TESTS EXCEPTIONS MODE 2 HEAT FLUX HOT CHANNEL FACTOR NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR AXIAL FLUX DIFFERENCE REACTOR TRIP SYSTEM INSTRUMENTATION RCS PRESSURE, TEMPERATURE, AND FLOW DEPARTURE FROM NUCLEATE BOILING LIMITS BORON CONCENTRATION 1 ERX-1-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections. These limits have been developed using the NRC-approved methodologies specified in Technical Specification 5.6.5b, Items 1 through 4 and 7 through 15. These limits have been determined such that all applicable limits of the safety analysis are met. 2.1 SAFETY LIMITS (SL 2.1) 2.1.1 In MODES 1 and 2, the combination of thermal power, reactor coolant system highest loop average temperature, and pressurizer pressure shall not exceed the safety limits specified in Figure 1. 2.2 SHUTDOWN MARGIN (SDM) (LCO 3.1.1) 2.2.1 The SDM shall be greater than or equal to 1.3% Ak/k in MODE 2 with K,, < 1.0, and in MODES 3, 4, and 5. 2.3 MODERATOR TEMPERATURE COEFFICIENT (MTC) (LCO 3.1.3) 2.3.1 The MTC upper and lower limits, respectively, are: The BOL/ARO/HZP-MTC shall be less positive than +5 pcm/*F. The EOL/ARO/RTP-MTC shall be less negative than -40 pcm/°F. 2 ERX-II-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 2.3.2 SR 3.1.3.2 The MTC surveillance limit is: The 300 ppm/ARO/RTP-MTC shall be less negative than or equal to -31 pcm/°F. The 60 ppm/ARO/RTP-MTC shall be less negative than or equal to -38 pcm/'F. where: BOL stands for Beginning of Cycle Life ARO stands for All Rods Out HZP stands for Hot Zero THERMAL POWER EOL stands for End of Cycle Life RTP stands for RATED THERMAL POWER 2.4 ROD GROUP ALIGNMENT LIMITS (LCO 3.1.4) 2.4.1 The SDM shall be greater than or equal to 1.3% Ak/k in MODES 1 and 2. 2.5 SHUTDOWN BANK INSERTION LIMITS (LCO 3.1.5) 2.5.1 The shutdown rods shall be fully withdrawn. Fully withdrawn shall be the condition where shutdown rods are at a position within the interval of 218 and 231 steps withdrawn, inclusive. 3 ERX-1I-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 2.6 CONTROL BANK INSERTION LIMITS (LCO 3.1.6) 2.6.1 The control banks shall be limited in physical insertion as shown in Figure 2. 2.6.2 The control banks shall always be withdrawn and inserted in the prescribed sequence. For withdrawal, the sequence is control bank A, control bank B, control bank C, and control bank D. The insertion sequence is the reverse of the withdrawal sequence. 2.6.3 A 115 step Tip-to-Tip relationship between each sequential control bank shall be maintained. 2.7 PHYSICS TESTS EXCEPTIONS - MODE 2 (LCO 3.1.8) 2.7.1 The SDM shall be greater than or equal to 1.3% Ak/k in MODE 2 during PHYSICS TESTS. 2.8 HEAT FLUX HOT CHANNEL FACTOR (F. (Z) (LCO 3.2.1) RTP F Q 2.8.1 FQ(Z) [K(Z)] for P > 0.5 P RTP FQ F0 (Z) S -<

0.5 where

P = RATI [K(Z)] for P S 0.5 LHERMAL POWER ED THERMAL POWER 4 ERX-II-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 FRTP 2.8.2 F = 2.50 2.8.3 K(Z) is provided in Figure 3. 2.8.4 Elevation and burnup dependent W(Z) values are provided in Figures 4, 5, 6, 7 and 8. For W(Z) data at a desired burnup not listed in the figures, but less than the maximum listed burnup, values at 3 or more burnup steps should be used to interpolate the W(Z) data to the desired burnup with a polynomial type fit that uses the nearest three burnup steps. For W(Z) data at a desired burnup outside of the listed burnup steps, a linear extrapolation of the W(Z) data for the nearest two burnup steps can be used. 2.8.5 SR 3.2.1.2 If the two most recent FQ(Z) evaluations show an increase in the expression maximum over Z [ F0c(Z) / K(Z) J, the burnup dependent values in Table 1 shall be used instead of a constant 2% to increase FQW(Z) per Surveillance Requirement 3.2.1.2.a. A constant factor of 2% shall be used for all cycle burnups that are outside the range of Table 1. 5 ERX-1I-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 2.9 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR (F"AH) (LCO 3.2.2) 2.9.1 FNAH FRTPAH [1 + PFAH (1-P) where: P = THERMAL POWER RATED THERMAL POWER 2.9.2 FR T PAH = 1.60 for all Fuel Assembly Regions 2.9.3 PFAH = 0.3 2.10 AXIAL FLUX DIFFERENCE (AFD) (LCO 3.2.3) 2.10.1 The AFD Acceptable Operation Limits are provided in Figure 9. 2.11 REACTOR TRIP SYSTEM (RTS) INSTRUMENTATION (LCO 3.3.1) 2.11.1 The numerical values pertaining to the Overtemperature N-16 reactor trip setpoint are listed below; Ký = 1.15 K, = 0.0139 I/F K3 = 0.00071 /psig TC 0 = indicated loop specific TC at Rated Thermal Power, °F P1 > 2235 psig T1 ! 10 sec 12 3 sec fJ(Aq) = -2.78 -{(qt-qb) + 18%) when (qt-q,) 5 -18% RTP = 0% when -18% RTP < (qt-qb) < +10.0% RTP = 2.34 * {(qt-qb) 10.0%) when (qt-qb) > +10.0% RTP 6 ERX-II-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 2.12 RCS PRESSURE, TEMPERATURE, AND FLOW DEPARTURE FROM NUCLEATE BOILING (DNB) LIMITS (LCO 3.4.1) 2.12.1 RCS DNB parameters for pressurizer pressure, RCS average temperature, and RCS total flow rate shall be within the surveillance limits specified below: 2.12.2 SR 3.4.1.1 Pressurizer pressure 2220 psig (4 channels) 2222 psig (3 channels) The pressurizer pressure limits correspond to the analytical limit of 2205 psig used in the safety analysis with allowance for measurement uncertainty. These uncertainties are based on the use of control board indications and the number of available channels. 2.'12.3 SR 3.4.1.2 RCS average temperature 5 588 'F (4 channels) 5 588 'F (3 channels) The RCS average temperature limits correspond to the analytical limit of 591.9 'F which is bounded by that used in the safety analysis with allowance for measurement uncertainty. These uncertainties are based on the use of control board indications and the number of available channels. 7 ERX-II-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 2.12.4 SR 3.4.1.3 The RCS total flow rate shall be > 403,700 gpm. 2.12.5 SR 3.4.1.4 The RCS total flow rate based on precision heat balance shall be

  • 403,700 gpm.

The required RCS flow, based on an elbow tap differential pressure instrument measurement prior to MODE 1 after the refueling outage, shall be greater than 327,000 gpm. 2.13 BORON CONCENTRATION (LCO 3.9.1) 2.13.1 The required refueling boron concentration is 1894 ppm.

3.0 REFERENCES

Technical Specification 5.6.5. 8 ERX-II-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 Table 1 F,(Z) MARGIN DECREASES IN EXCESS OF 2% PER 31 EFPD Cycle Maximum Decrease Burnup In FQ(Z) MARGIN (MWD/MTU) (Percent) 4873 2.00 5088 2.27 5302 2.49 5517 2.37 5732 2.04 5947 2.00 Note: All cycle burnups outside the range of the table shall use a constant 2% decrease in FQ(Z) margin for compliance with the 3.2.1.2.a Surveillance Requirements. Linear interpolation is acceptable to determine the FQ(Z) margin decrease for cycle burnups which fall between the specified burnups. 9 ERX-II-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 Figure 1 Reactor Core Safety Limits 680 660 640 U-0. E 620 I-- CO) 600 580 560 0 20 40 60 80 100 120 Percent of Rated Thermal Power 140 10 ERX-11-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 FIGURE 2 ROD BANK INSERTION LIMITS VERSUS THERMAL POWER 240 220 i. !, i i i, i (25.3,218) 1 1 11. 1 i ! i i ' i ! '. I " I .(96218: -HI I I I I I I I I .. ' I I 200 180 'C .- 160 -,-I 04 a 140 4.) 02S120 HH H ro o 100 04 m 80 0 60 40 20 0 II I/BANK B (10146) BANK COl O' I I I/ 0 10 20 30 40 50 60 70 PERCENT OF RATED THERMAL POWER NOTES:

1.

Fully withdrawn shall be the condition where are at a position within the interval of 218 withdrawn, inclusive. 80 90 100 control rods and 231 steps

2.

Control Bank A shall be fully withdrawn. ii ERX-11-002, Rev. 0

COLR for CPNPP Unit 1 Cycle 16 FIGURE 3 K(Z) NORMALIZED FQ(Z) AS A FUNCTION OF CORE HEIGHT 0 ~z 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 (0.0,1 (6-0,1.0) I [T -Ttýý 4 iL I I I I F777 (12.0,0.925) ..........I..........................i i i i i i i i i........ ALL. -1.1-11111 0 1 2 3 4 5 6 7 8 9 10 11 12 BOTTOM CORE HEIGHT (FEET) TOP Axial Node 61 60 59 58 57 56 55 54 K(z) 0.9250 0.9275 0.9300 0.9325 0.9350 0.9375 0.9400 0.9425 Axial Node 53 52 51 50 49 48 47 46 K(Z) 0.9450 0.9475 0.9500 0.9525 0.9550 0.9575 0.9600 0.9625 Axial Node 45 44 43 42 41 40 39 38 K(Z) 0.9650 0.9675 0.9700 0.9725 0.9750 0.9775 0.9800 0.9825 Axial Node 37 36 35 34 33 32 1 - 31 K(Z) 0.9850 0.9875 0.9900 0.9925 0.9950 0.9975 1.0000 Core Height (ft) = (Node -

1)
  • 0.2 12 ERX-11-002, Rev.

0

COLR for CPNPP-Unit 1 Cycle 16 FIGURE 4 W(Z) AS A FUNCTION OF CORE HEIGHT (150 MWD/MTU) 1.650 1.600 1.550 1.500 1.450 1.400 1.350 1.300 1.250 1.200 1.150 1.100 1.050 1.000 0 1 2 3 4 5 6 7 8 9 10 11 12 BOTTOM Axial Node W(Z) 58 - 61 57 1.4055 56 1.4119 55 1.4118 54 1.4005 53 1.3841 52 1.3651 51 1.3404 50 1.3121 49 1.2820 48 1.2498 47 1.2186 46 1.1975 45 1.1870 CORE HEIGHT (FEET) Axial Node 44 43 42 41 40 39 38 37 36 35 34 33 32 31 w(Z) 1.1853 1.1866 1.1837 1.1800 1.1781 1.1758 1.1725 1.1709 1.1672 1.1615 1.1538 1.1452 1.1386 1.1342 Axial Node 30 29 28 27 26 25 24 23 22 21 20 19 18 17 w(Z) 1.1324 1.1347 1.1473 1.1578 1.1673 1.1761 1.1840 1.1909 1.1970 1.2021 1.2069 1.2118 1.2173 1.2263 Axial Node 16 15 14 13 12 11 10 9 8 7 6 5 1 - 4 TOP w(Z) 1.2377 1.2522 1.2728 1.3000 1.3269 1.3529 1.3781 1.4016 1.4233 1.4428 1.4591 1.4707 Core Height (ft) = (Node -

1)
  • 0.2 13 ERX-11-002, Rev.

0

COLR for CPNPP Unit 1 Cycle 16 FIGURE 5 W(Z) AS A FUNCTION OF CORE HEIGHT (2,000 MWD/MTU) 1.650 1.600 1.550 1.500 1.450 Ri', 1.400 1.350 1.300 1.250 1.200 1.150 1.100 1.050 1.000 0 1 2 3 4 5 6 7 8 9 10 1 BOTTOM CORE HEIGHT (FEET) Axial Node 58 - 61 57 56 55 54 53 52 51 50 49 48 47 46 45 w(Z) 1.4794 1.4643 1.4441 1.4186 1.3901 1.3602 1.3277 1.2938 1.2594 1.2251 1.1943 1.1769 1.1699 Axial Node 44 43 42 41 40 39 38 37 36 35 34 33 32 31 w(Z) 1.1675 1.1651 1.1607 1.1558 1.1535 1.1520 1.1501 1.1500 1.1480 1.1443 1.1384 1.1321 1.1293 1.1271 Axial Node 30 29 28 27 26 25 24 23 22 21 20 19 18 17 w(Z) 1.1286 1.1371 1.1501 1.1616 1.1719 1.1815 1.1900 1.1975 1.2042 1.2098 1.2149 1.2186 1.2222 1.2317 Axial Node 16 15 14 13 12 11 10 9 8 7 6 5 1 - 4 1 12 TOP w(Z) 1.2511 1.2775 1.3064 1.3349 1.3630 1.3916 1.4196 1.4458 1.4699 1.4916 1.5102 1.5238 Core Height (ft) = (Node -

1)
  • 0.2 14 ERX-11-002, Rev.

0

COLR for CPNPP Unit 1 Cycle 16 RI 1.650 1.600 1.550 1.500 1.450 1.400 1.350 1.300 1.250 1.200 1.150 1.100 1.050 1.000 FIGURE 6 W(Z) AS A FUNCTION OF CORE HEIGHT (10,000 MWD/MTU) 0 1 2 3 4 5 6 7 8 9 10 11 12 BOTTOM CORE HEIGHT (FEET) Axial Node W (Z) 58 - 61 57 1.4204 56 1.4141 55 1.4042 54 1.3904 53 1.3730 52 1.3517 51 1.3275 50 1.3021 49 1.2748 48 1.2496 47 1.2368 46 1.2379 45 1.2394 Axial Node 44 43 42 41 40 39 38 37 36 35 34 33 32 31 w(Z) 1.2378 1.2348 1.2290 1.2232 1.2195 1.2155 1.2102 1.2059 1.1993 1.1902 1.1792 1.1663 1.1518 1.1369 Axial Node 30 29 28 27 26 25 24 23 22 21 20 19 18 17 w(Z) 1.1312 1.1315 1.1382 1.1435 1.1476 1.1515 1.1552 1.1581 1.1602 1.1624 1.1651 1.1679 1.1701 1.1723 Axial Node 16 15 14 13 12 11 10 9 8 7 6 5 1 - 4 TOP w(Z) 1.1826 1.2004 1.2205 1.2403 1.2600 1.2793 1.2978 1.3152 1.3312 1.3455 1.3574 1.3653 Core Height (ft) = (Node -

1)
  • 0.2 15 ERX-11-002, Rev.

0

COLR for CPNPP Unit 1 Cycle 16 Riý 1.650 1.600 1.550 1.500 1.450 1.400 1.350 1.300 1.250 1.200 1.150 1.100 1.050 1.000 FIGURE 7 W(Z) AS A FUNCTION OF CORE HEIGHT (14,000 MWD/MTU) 069 0 1 2 3 4 5 6 7 8 9 10 11 12 BOTTOM CORE HEIGHT (FEET) Axial Node 58 - 61 57 56 55 54 53 52 51 50 49 48 47 46 45 w(Z) 1.3788 1.3767 1.3681 1.3491 1.3227 1.2989 1.2874 1.2759 1.2609 1.2432 1.2249 1.2174 1.2126 Axial Node 44 43 42 41 40 39 38 37 36 35 34 33 32 31 w(Z) 1.2137 1.2216 1.2264 1.2295 1.2308 1.2300 1.2271

1. 2220 1.2162 1.2115 1.2060 1.1974 1.1865 1.1723 Axial Node 30 29 28 27 26 25 24 23 22 21 20 19 18 17 w(Z) 1.1673 1.1678 1.1709 1.1721 1.1717 1.1708 1.1694 1.1667 1.1630 1.1595 1.1593 1.1610 1.1617 1.1642 Axial Node 16 15 14 13 12 11 10 9

8 7 6 5 1 - 4 TOP w(Z) 1.1658 1.1729

1. 1866
1. 2003 1.2140 1.2273 1.2401 1.2522
1. 2633 1.2734 1.2816 1.2862 Core Height (ft)

= (Node -

1)
  • 0.2 16 ERX-11-002, Rev.

0

COLR for CPNPP Unit 1 Cycle 16 1.650 1.600 1.550 1.500 1.450 1.400 1.350 1.300 1.250 1.200 1.150 1.100 1.050 1.000 FIGURE 8 W(Z) AS A FUNCTION OF CORE HEIGHT (20,000 MWD/MTU) 0 1 2 3 4 5 6 7 8 9 10 11 12 BOTTOM CORE HEIGHT (FEET) Axial Node W (Z) 58 - 61 57 1.3507 56 1.3455 55 1.3435 54 1.3354 53 1.3184 52 1.2999 51 1.2834 50 1.2664 49 1.2450 48 1.2272 47 1.2231 46 1.2186 45 1.2181 Axial Node 44 43 42 41 40 39 38 37 36 35 34 33 32 31 w(Z) 1.2213 1.2295 1.2389 1.2474 1.2562 1.2637 1.2689 1.2736 1.2751 1.2731 1.2681 1.2602 1.2495 1.2352 Axial Node 30 29 28 27 26 25 24 23 22 21 20 19 18 17 w(Z) 1.2235 1.2197 1.2205 1.2238 1.2252 1.2244 1.2217 1.2171 1.2108 1.2030 1.1941 1.1843 1.1762 1.1745 Axial Node 16 15 14 13 12 11 10 9 8 7 6 5 1 - 4 TOP w(Z) 1.1718 1.1744 1.1859 1.2000 1.2137 1.2271 1.2401 1.2524 1.2641 1.2750 1.2840 1.2893 Core Height (ft) = (Node -

1)
  • 0.2 17 ERX-11-002, Rev.

0

COLR for CPNPP Unit 1 Cycle 16 FIGURE 9 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER 100 90 80 70 94 0 0Z4 0 P4 60 50 40 30 '(-,15, 100) A (10,100) l l l l l li i UNACCEPTABLE UNACCEPTABLE OPERATION OPERATION

1-ACCEPTABLE OPERATION

(-30,50) (30,50) i f 1 1 -i 20 10 0 -40 -30 -20 -10 0 10 AXIAL FLUX DIFFERENCE (%) 20 30 40 18 ERX-11-002, Rev. 0}}

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