ML060300207

Core Operating Limits Report for Unit 1, Cycle 17, Revision 2

ML060300207
Person / Time
Site:	Calvert Cliffs
Issue date:	01/25/2006
From:	Spina J Constellation Energy Group
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML060300207 (26)

Text

James A. Spina Vice President Calvert Cliffs Nuclear Power Plant, inc.1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.4455 410.495.3500 Fax Constellation Energy Generation Group January 25, 2006 U. S. Nuclear Regulatoi Washington, DC 2055!ATTENTION:

SUBJECT:

y Commission Document Control Desk Calvert Cliffs Nuclear Power Plant Unit No. 1; Docket No. 50-3 17 Core Oneratin2 Limits Renort for Unit I Cycle 17, Revision 2 Pursuant to Calvert Cliffs Nuclear Power Plant Technical Specification 5.6.5, the attached Core Operating Limits Report for Unit 1, Cycle 17, Revision 2 (Attachment

1) is provided for your records.Please replace the Unit 1 Core Operating Limits Report in its entirety, with the attached Revision 2.Should you have questions regarding this matter., please contact Mr. L. S. Larragoite at (410) 495-4922.Very truly yours, JAS/CAN/bjd

Attachment:

(1) Core Operating Limits Report for Unit 1, Cycle 17, Revision 2 cc: (Without Attachment)

P. D. Milano, NRC Resident Inspector, NRC S. J. Collins, NRC R. I. McLean, DNR 4A001 ATTACHMENT (1)CORE OPERATING LIMITS REPORT FOR UNIT 1, CYCLE 17, REVISION 2 Calvert Cliffs Nuclear Power Plant, Inc.January 25, 2006

• .e CALVERT CLIFFS NUCLEAR POWER PLANT CORE OPERATING LIMITS REPORT for UNIT 1, CYCLE 17 REVISION 2 I~4a. a4 RESPONSIBLE ENGINEER / DATE DE&PNDEM QRVIEWER I DATE rpx AL ENG.EER -FOSU / DATE Calvert Cliffs 1, Cycle 17 COLR Page 1 of 24 Rev. 2 ICalvert Cliffs 1, Cycle 17 COLR Page 1 of 24 Rev. 2 CORE OPERATING IOBSR EPORT CALVERT CLIFFS UNIT 1, CYCLE 17 The following limits are included in this Core Operating Limits Report: Specification Title Page 3.1.1 3.1.3 3.1.4 3.1.6 3.2.1 3.2.2 3.2.3 3.2.5 3.3.1 3.9.1 Introduction.................................................................................................................4 Definitions

..................

.5 Shutdown Margin (SDM) ...............

6 Moderator Temperature Coefficient (MTC)...............................................................6 Control Element Assembly (CEA) Alignment

.................

.........................

6 Regulating Control Element Assembly (CEA) Insertion Limits ................................

6 Linear Heat Rate (LHR)................6............................................

..!...6 Total Planar Radial Peaking Factor (FAT) ...7.......................................7 Total Integrated Radial Peaking Factor (F 1 T) ..............

............................

7 Axial Shape Index (ASI) .........................................

7 Reactor Protective System (UPS) Instrumentation

-Operating

..................................

7 Boron Concentration

..........................................

8 List of Approved Methodologies

..........................................

21 The following figures are included in this Core Operating Limits Report: Number Title Pa-ae Figure 3.1.1 Figure 3.1.4 Figure 3.1.6 Figure 3.2.1-1 Figure 3.2.1-2 Figure 3.2.1-3 Figure 3.2.2 Figure 3.2.3 Figure 3.2.5 Figure 3.3.1-1 Figure 3.3.1-2 Figure 3.3.1-3 Shutdown Margin vs. Time in Cycle .............................................

9 Allowable Time To Realign CEA Versus Initial Total Integrated Radial Peaking Factor (lFr) ..............................

i ........ 10 CEA Group Insertion Limits vs. Fraction of Rated Thermal Power ........................

11 Allowable Peak Linear Heat Rate vs. Time in Cycle ............................................

12 Linear Heat Rate Axial Flux Offset Control Limits ..................................

13 Total Planar Radial Peaking Factor (FA) vs.Scaling Factor (N-Factor)

...............

14 T Total Planar Radial Peaking Factor (F.i, ) vs. Allowable Fraction of Rated Thermal Power ........ 15 Total Integrated Radial Peaking Factor (FrT) vs.Allowable Fraction of Rated Thermal Power .............................

16 DNB Axial Flux Offset Control Limits .............................

17 Axial Power Distribution

-High Trip Setpoint Peripheral Axial Shape Index vs. ]Fraction of Rated Thermal Power .......................

18 Thermal Margin/Low Pressure Trip Setpoint -Part 1 ............................................

19 Thermal Margin/Low Pressure Trip Setpoint -Part 2 .............................................

20 Calvert Cliffs 1, Cycle 17 COLR Page 2 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 2 of 24 Rev. I UNIT 1 CORE OPERATING LIMITS REPORT LIST OF EFFECTIVE PAGES Page No. Rev. No.1 2 2 1 3 2 4 2 5 -1 6 __1 8 _ 2 9 _ _ _10 I__ _ _ _ _11 __ __ __1 12 -13 1 14 1_15 _1 6 1 17 1 18 1 19 1 20 }1 21 1 22 _ 1 23 1 24 _ 1II I'Calvert Cliffs 1, Cycle 17 COLR Page 3 of 24 Rev. 2 INTRODUCTION This report provides the cycle-specific core operating limits for operation of Calvert Cliffs Unit 1, Cycle 17. It contains the limits for: Shutdown Margin (SDM)Moderator Temperature Coefficient (MTC)Control Element Assembly (CEA) Alignment Regulating Control Element Assembly (CEA) Insertion Limits Linear Heat Rate (LHR)Total Planar Radial Peaking Factor (Fe)Total Integrated Radial Peaking Factor (FT)Axial Shape Index (ASI)Reactor Protective System (RPS) Instrumentation

-Operating Boron Concentration In addition, this report contains a number of figures which provides limits on the parameters listed above. If any of the limits contained in this report are exceeded, corrective action will be taken as defined in the Technical Specifications.

This report has been prepared in accordance with the requirements of the Technical Specifications.

The cycle specific limits have been developed using the NRC-approved methodologies given in the "List of Approved Methodologies" section of this report and the Technical Specifications.

COLR Revision 0 COLR Revision 0 is the initial issue for Unit 1 Cycle 17; it is limited to operation in Modes 5 and 6.COLR Revision 1 COUR Revision 1 justifies operation in all plant modes. (SE00492)COLR Revision 2 COLR Revision 2 modifies the refueling boron concentration requirements in preparation for the start of the 2006 refueling outage. (ES200200274-0l8 Revision 1 docmnented the refueling boron concentration requirements.)

Calvert Cliffs 1, Cycle 17 COLR Page 4 of 24 Rev. 2 DEFINITIONS Axial Shape Index (ASI)ASI shall be the power generated in the lower half of the core less the power generated in the upper half of the core, divided by the sum of the power generated in the lower and upper halves of the core.ASI = lower -upper YE lower + upper The Axial Shape Index (Yr) used for the trip and pretrip signals in the Reactor Protection System (RPS) is the above value (YE) modified by an appropriate multiplier (A) and a constant (B) to determine the true core axial power distribution for that channel.YI=AYE+B Total Integrated Radial Peaking Factor -FrT The Total Integrated Radial Peaking Factor is the ratio of the peak pin power to the average pin power in an unrodded core.Total Planar Radial Peaking Factor -FxT The Total Planar Radial Peaking Factor is the maximum ratio of the peak to average power density of the individual fuel rods in any of the unrodded horizontal planes.Calvert Cliffs 1, Cycle 17 COLR Page 5 of 24 Rev. I CYCLE SPECIFIC LIMITS FOR UNIT 1, CYCLE 17 3.1.1 Shutdown Margin (SDM) (SR 3.1.1.1)Tavg > 200 0 F -Modes 3 and 4: The shutdown margin shall be equal to or greater than the limit line of COLR Figure 3.1.1.Tavg 200 OF -Mode 5: The shutdown margin shall be > 3.0% .&p.3.1.3 Moderator Temperature Coefficient (MTC) (SR 3.1.3.2)The Moderator Temperature Coefficient (MTC) shall be less negative than -3.0 x 10 4Ap/0 F at rated thermal power.3.1.4 Control Element Assembly (CEA) Alignment (Action 3.1.4.B.1)

The allowable time to realign a CEA may be provided by the full core power distribution monitoring system (Better Axial Shape Selection System -BASSS) or COIR Figure 3.1.4,"Allowable Time to Realign CEA Versus Initial Total Integrated Radial Peaking Factor (E T). If COLR Figure 3.1.A is used, the pre-misaligned Fr value used to determine the allowable time to realign the CEA shall be the latest measurement taken within 5 days prior to the CEA misalignment If no measurements have been taken within 5 days prior to the misalignment and the full core power distribution monitoring system is unavailable then the time to realign is zero (0) minutes.3.1.6 Regulating Control Element Assembly (CEA) Insertion Limits (SR 3.1.6.1 and SR 3.1.6.2)The regulating CEA groups insertion limits are shown on COLR Figure 3.1.6.3.2.1 Linear Heat Rate (LHR) (SR 3.2.1.2 and SR 3.2.1.4)The linear heat rate shall not exceed the limits shown on COLR Figure 3.2.1-1.The axial shape index power dependent control limits are given in COLR Figure 3.2.1-2.When using the excore detector monitoring system (SR 3.2.1.2): The alarm setpoints are equal to the ASI limits, therefore when the alarms are adjusted, they provide indication to the operator when ASI is not within the limits.The axial shape index alarm setpoints are shown as a function of fraction of thermal power on COLR Figure 3.2.1-2. A scaling factor (N-Factor).vs.

FxyT is shown in COLR Figure 3.2.1-3. The fraction of thermal power shown in COLR Figure 3.2.1-2 must be scaled by the N-Factor to determine the axial shape index alarm setpoints as a function of fraction of rated thermal power.Calvert Cliffs I, Cycle 17 COLR Page 6 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 6 of 24 Rev. I CYCLE SPECIFIC LIMTS FOR UNIT 1, CYCLE 17 When using the incore detector monitoring system (SR 3.2.1.4): The alarm setpoints are adjusted to protect the Linear Heat Rate limits shown on COLR Figure 32.1-1 and uncertainty factors are appropriately included in the setting of these alarms.The uncertainty factors for the icnore detector monitoring system are: 1. A measurement-calculational uncertainty factor of 1.062, 2. An engineering uncertainty factor of 1.03, 3. A linear heat rate uncertainty factor of 1.002 due to axial fuel densification and thermal expansion, and 4.a For measured thermal power less than or equal to 50 percent but greater than 20 percent of rated full core, power a thermal power measurement uncertainty factor of 1.035.4.b For measured thermal power greater than 50 percent of rated full core power a thermal power measurement uncertainty factor of 1.020.3.2.2 Total Planar Radial Peaking Factor (F4,T) (SR 3.2.1.1 and SR 3.2.2.1)The calculated value of FyT shall be limited to < 1.65.The allowable combination of thermal power and F-YT are shown on COLR Figure 3.2.2.3.2.3 Total Integrated Radial Peaking Factor (FrT) (SR 3.2.3.1)The calculated value of FT shall be limited to < 1.65.The allowable combinations of thermal power and FrT are shown on COLR Figure 3.2.3.3.2.5 Axial Shape Index (ASI) (SR 3.2.5.:1)The axial shape index and thermal power shall be maintained within the limits established by the Better Axial Shape Selection System (BASSS) for CEA insertions of the lead bank of <55% when BASSS is operable, or within the limits of COLR Figure 3.2.5 for CEA insertions specified by COLR Figure 3.1.6.3.3.1 Reactor Protective System (RPS) Instrumentation

-Operating (Reactor Trip Setpoints) (TS Table 3.3.1-1)The Axial Power Distribution

-High trip setpoint and allowable values are given in COLR Figure 3.3.1-1.The Thermal Margin/Low Pressure (TMILP) trip setpoint is given in COLR Figures 3.3.1-2 and 3.3.1-3. The allowable values are to be not less than the larger of (1) 1875 psia or (2) the'value calculated from COLR Figures 3.3.1-2 and 3.3.1-3.Calvert Cliffs 1, Cycle 17 COLR Page 7 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 7 of 24 Rev. l 3.9.1 Boron Concentration (SR 3.9.1.1)The refueling boron concentration will maintain the.Kff at 0.95 or less (including a 1%AK/K conservative allowance for uncertainties).

The refueling boron concentration shall be maintained uniform. For Mode 6 operation the RCS temperature must be maintained

< 140 OF.Refueling Boron Concentration Limits Post-Refueling UGS or RV Head lift height restrictions:

No restriction COLRIfech Spec Limit 1421 pprm Chemistry Sampling 15 ppm Boron-10 Depletion 29 ppm Refueling Boron Concentration Limit including Chemistry Sampling uncertainty and > 1465 ppm.Boron-10 Depletion Dilution of the Refueling Pool between Low and High Level Alarms with Refueling Pool Flooded 46 ppm Any number of Temporary Rotations of Fuel Assemblies 20 ppm UIC17 In-Core Shuffle Allowance Not required Engineering Requirement for Refueling Boron > 1531 ppm Concentration.

Additional Boron Conservatism to raise the Refueling Boron Concentration Administrative Limit to the 2006 876 ppm RFO target goa8 Refueling Boron Concentration Administrative Limit > 2407 ppm Calvert Cliffs 1, Cycle 17 CQLR Page 8 of 24 Rev. 2 Calvert Cliffs; 1, Cycle 17 COLR Page 8 of 24 Rev. 2 6 5t ACCEPTABLE OPERATION REGION (EOC, 4.5)0 5 I-0 c-en 44 34 (BO0C, 3.5)MINIMUM SHUTDOWN MARGIN UNACCEPTABLE OPERATION REGION A-U BOC EOC TIME IN CYCLE Figure 3.1.1 Shutdown Margin vs. Time in Cycle Calvert Cliffs 1, Cycle 17 CQLR Page 9 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 9 of 24 Rev. I i 70 60 (1.53, 60), 50 240Fr 978 -600 W 320 020 1 *ALLOWED REGION 0: (1.63,0)2. i ... .., ...1.50 1.55 1.60 1.65 1.70 MEASURED PRE-MISALIGNED TOTAL INTEGRATED RADIAL PEAKING FACTOR Figure 3.1.4 Allowable Time to Realign CEA Versus Initial Total Integrated Radial Peaking Factor (FrT)Calvert Cliffs 1, Cycle 17 COLR Page 10 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 10 of 24 Rev. 1 i1 00 frmuin A A 35%)1.000 9-c--a j noan I3 Zrm in 0.900 0 0.800 4 0.700 w M F 0.600 Ul-IJ co 0.500 0° 0.300 0 g 0.200 U..I VV 4 sa{s_l .75,G oup 5 50 i)* (0.7% Grou 5 QO% ---0. 5G up 5 ( 85%)i (.56,0 up4 500)kng Term nSteady -State Inserlon Umit, \.Groupp5 @25 % .. !I I I'A (0 2C.rngh a Q iO%I I I 0.100 Short Term Steady I State Insertion Llmit L Group 4 @ 20% n-.4.- 4. 4. -J ---4-I I MO.OC I I I.Grou 3 Bffi AO%),n nnn I I I_IAllowable BASSSI l -(Group 56[ratg Region 1 5 0 20 40 60 80 136.0 108.8 81.6 54.4 27.2@ 55%)34 I I1 11 1 1 'IIII I-......100 0 2 0.0 136.0 110 2.0 40 60 80 100 .0 20 D8.8 81.6 54.4 27.2 0.0 136.0 108.8 II I 1 121 i-I I 14 1 40 81.6 100 0.0 60 80 100 54.4 27.2 0.0....0 20 40 60-136.0 108.8 81.6 54.4 130 100 27.2 0.0 0 20 40 60 80 136.0 108.8 81.6 54A 27.2%CEA INSERTION INCHES CEA WITHDRAWN (NEOPI-13 defines ARO)Figure 3.1.6 CEA Group Insertion Limits vs. Fraction of Rated Thermal Power Calvert Cliffs 1, Cycle 17 CQLR Page 11 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 1 1 of 24 Rev. I

>17.0 16.5 -F16.0 uj 15.5 -T.15.0 UNACCEPTABLE OPERATION idV14.5 CJ 14.3~14.0-0 13.5 ACCEP ABLE OPERATION 13.0 BOC EOC TIME IN CYCLE Figure 3.2.1-1 Allowable Peak Linear Heat Rate vs. Time in Cycle Calvert Cliffs I, Cycle 17 COLR Page 12 of 24 Rev. 1 Calvert Cliffs I, Cycle 17 COLR Page 12 of 24 Rev. I 1.100 1.050 1.000 (-0.06, 1.00) (0.1: 0.950 UNACCEPTABLE OPERATION B 0.900 REGION I 0.850 g 0.800 Wf 0.750 w 0.700 (-0.3, 0.70) ACCEPTABLE-I 06 OPERATION REGION o .0.600 .:-I< 0.550 IL o 0.500 (-0.3, 0.50)z 0 p 0.450 0.400 0.350 0.300 0.250-0.60 -0.40 -0.20 0.00 0.2.._. _ ._ .._ ._ _ _ ........ _ ..20 0.40 0.60 PERIPHERAL AXIAL SHAPE INDEX, Yi Figure 3.2.1-2 Linear Heat Rate Axial Flux Offset Control Limits (LCO Limits are not needed below 20% thermal power)(See NEOP-13 for Administrative Limits)Calvert Cliffs 1, Cycle 17 COLR Page 13 of24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 13 of 24 Rev. 1 e ' I .0.90 (1.7325, 0.80)0.80 0 0.60 0 ACCEPTABLE VALUE z:i .50\0.40 0.30 (1.819,0.20) 1.40 1.45 1.50 1.55 1.61) 1.65 1.70 1.75 1.80 1.85 Fxy Figure 3.2.1-3 Total Planar Radial Peaking Factor (FyT) vs.Scaling Factor (N-Factor)(See NEOP-13 for Administrative Limits)Calvert Cliffs 1, Cycle 17 COLR Page 14 of 24 Rev. 1 0.95 OPERATION W REGION L 0.85 l 0.75 (1.7325, 0.80) FT LIMIT CURVE w0.65 ACCEPTABLE I 0.55 OPERATION Z REGION 0 (. 0.45 w 0.35-I 3: 0.25-J- (1.819, 0.20)0.15 0.05 I 1.60 1.65 1.70 1.75 1.80 1.85 T Fxy Figure 3.2.2 Total Planar Radial Peaking Factor (FyT) vs.Allowable Fraction of Rated Thermal Power While operating with FxyT greater than 1.65, withdraw CEAs to or above the Long Term Steady State Insertion Limits (Figure 3.1.6)Calvert Cliffs 1, Cycle 17 COLR Page 15 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 15 of 24 Rev. I 1.05 0.95 (1.650u, 1.UU) \ REGION cL 0.85-J (1.7325, 0.80 F 0.75 FT LIMIT CURVE LU 0.65 IL 0.55 0 O ACCEPTABLE F 0.45 OPERATION 02REGION U-0.35 0.25 (1.8190, 020) L<0.15 0.05 1.55 1.60 1.65 1.70 1.75 1.80 1.85 T Fr Figure 3.2.3 Total Integrated Radial Peaking Factor (FrT) vs.Allowable Fraction of Rated Thermal Power While operating with FrT greater than 1.65, withdraw CEAs to or above the Long Term Steady State Insertion Limits (Figure 3.1.6)Calvert Cliffs 1, Cycle 17 COLR Page 16 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR.Page 16 of 24 Rev. 1

_IUUU -VOl.U) (.10, 1.00)1 0.950- -UNACCEPTABLE UNACC X OPERATION OPEF E 0.900- REGION RE, U'¢ 0.850 0 IL 0.800 (C 0.750-m 00 .ACCEPTABLE O 0.700 (-0.3, 0.70) OPERATION 0.650. REGION 2 0.600 Q 0.550- .2 0.500 -(-0.3, 0.50)U-° 0.450--F 0.400 0.350 0.300 0.250 -.(-0.42, 0.20)0.200 I o .I --0.60 -0.40 -0.20 0.00 0.20 PERIPHERAL AXIAL SHAPE INDEX, Yi FIgulr~e 342.5 DNB Axial Flux Offset Control Limits (See NEOP-13 for Administrative Limits)i l 0.40 0.60 Calvert Cliffs 1, Cycle 17 COLR Page 17 of 24 Rev. 1 1.300 1.250 1.200 UNACCEPTABLE (0.0, 1.17) UNACCEPTABLE 1.150 OPERATION OPERATION REGION REGION 1.100 /1.050 1.000 (-0.2,1.00)

(0.2, 1.00)tu 0.950 0 0.900 \0.g 0.850 w 0.800 /.0.750 -0 w 0.700 u. 0.650 0 Z 0.600 0 ACCEPTABLE 0.5/0 OPERATION REGION U. 0.500 .0.450 -0.400 -(-0.6, 0.40) (0.6, 0.40)0.350 -0.300 0.250 .0.200 -0.150 , I I I --0.80 -0.60 -0.40 -0.20 0.00 0.20 0.40 0.60 0.80 PERIPHERAL AXIAL SHAPE INDEX, Y Figure 3.3.1-1 Axial Power Distribution

-High Trip Setpoint Peripheral Axial Shape Index vs. Fraction of Rated Thermal Power Calvert Cliffs 1, Cycle 17 COLR Page 18 of 24'Rev. 1 1.60.I I I I I I I I 1.50 -1.40 -P r = 2869.5 x (A, x (QRu) + 17.98 x Tk, -10820 Var Q oDN = Ai x QRi...I ..1.30 1.20 1.10 1.00 0.90 (-0.6,11.3)

.7< /_ + ,(+0.6, 1 1)A=0.5 x, Il + 1 0 \ \ ___i = .o0o ST--I.-0.60 -0.50 -0.40 -0.30 -0.20 -0.10 0.00 0.10 0.20 0.30 ASI Figure 3.3.1-2 0.40 0.50 0.60 Thermal Margin/Low Pressure Trip Setpoint -Part I (ASI vs. A 1)Calvert Cliffs 1, Cycle 17 COLR Page 19 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 19 of 24 Rev. I P T* = 2869.5 x (Al) :x (QRI) + 17.98 x Tin -10820 Var Q DNB -=Al xQRI 1.2 1.1 -1.0 0.9 -0.8 -0.7 -0.6 -_0.5 -0.4 _0.3 -(I 0.2 _0.1 -0.0 -0.0 1.2)0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 FRACTION OF RATED THERMAL POWER Figure 3.3.1-3 Thermal Margin/Low Pressure Trip Setpoint -Part 2 (Fraction of Rated Thermal Power vs. QR1)Calvert Cliffs 1, Cycle 17 COLR Page 20 of 24 Rev. 1 LIST OF APPROVED METHODOLOGIES (1) CENPD-199-P, Rev 1-P-A, "C-E Setpoint Methodology:

C-E Local Power Density and DNB LSSS and LCO Setpoint Methodology for Analog Protection Systems," January 1986 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2, 3.2.3, 3.2.5)(2) CEN-124(B)-P, "Statistical Combination of Uncertainties Methodology Part 1: C-E Calculated Local Power Density and Thermal Margin/Low Pressure LSSS for Calvert Cliffs Units I and ]I," December 1979 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.2, 3.2.3)(3) CEN-124(B)-P, "Statistical Combination of Uncertainties Methodology Part 2: Combination of System Parameter Uncertainties in Thermal Margin Analyses for Calvert Cliffs Units land 2," January 1980 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)(4) CEN-124(B)-P, "Statistical Combination of Uncertainties Methodology Part 3: C-E Calculated Departure from Nucleate Boiling and Linear Heat Rate Limiting Conditions for Operation for Calvert Cliffs Units 1 and 2," March 1980 (Methodology for Specifications 3.1.6, 3.2.1, 3.2.2, 3.2.3, 3.2.5)(5) CEN-191(B)-P, "CETOP-D Code Structure and Modeling Methods for Calvert Cliffs Units 1 and 2," December 1981 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)(6) Letter from Mr. D. H. Jaffe (NRC) to Mr. A. E. Lundvall, Jr. (BG&E), dated June 24, 1982, Unit 1 Cycle 6 License Approval (Amendment No. 71 to DPR-53 and SER) [Approval to CEN-124(B)-P (three parts) and CEN-191(B)-P)]

(7) CEN-348(B)-P, "Extended Statistical Combination of Uncertainties," January 1987 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)(8) Letter from Mr. S. A. McNeil, Jr. (NRC) to Mr. J. A. Tiernan (BG&E), dated October 21, 1987, Docket Nos. 50-317 and 50-318, "Safety Evaluation of Topical Report CEN-348(B)-P, Extended Statistical Combination of Uncertainties" (9) CENPD-161-P-A, "TORC Code, A Computer Code for Determining the Thermal Margin of a Reactor Core," April 1986 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)(10) CENPD-162-P-A, "Critical Heat Flux Correlation of C-E Fuel Assemblies with Standard Spacer Grids Part 1, Uniform Axial Power Distribution," April 1975 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)(11) CENPD-207-P-A, "Critical Heat Flux Correlation for C-E Fuel Assemblies with Standard Spacer Grids Part 2, Non-Uniform Axial Power Distribution," December 1984 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)(12) CENPD-206-P-A, "TORC Code, Verification and Simplified Modeling Methods," June 1981 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)(13) CENPD-225-P-A, "Fuel and Poison Rod Bowing," June 1983 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.3, 3.2.5)Calvert Cliffs 1, Cycle 17 COLR Page 21 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 21 of 24 Rev. 1 (14) CENPD-266-P-A, "The ROCS and DIT Computer Code for Nuclear Design," April 1983 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2, 3.2.3, 3.2.5)(15) CENPD-275-P-A, "C-E Methodology for Core Designs Containing Gadolinia

-Urania Burnable Absorbers," May 1988 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2, 3.2.3, 3.2.5)(16) CENPD-382-P-A, "Methodology for Core Designs Containing Erbium Burnable Absorbers," August 1993 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2, 3.2.3, 3.2.5)(17) CENPD-139-P-A, "C-E Fuel Evaluation Model Topical Report," July 1974 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2)(18) CEN-161-(B)-P-A, "Improvements to Fuel Evaluation Model," August 1989 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2)(19) CEN-161-(B)-P, Supplement l-P, "Improvements to Fuel Evaluation Model," April 1986 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2)(20) Letter from Mr. S. A. McNeil, Jr. (NRC) to Mr. J. A. Tiernan (BG&E), dated February 4, 1987, Docket Nos. 50-317 and 50-318, "Safety Evaluation of Topical Report CEN-161-(B)-P, Supplement 1-P, Improvements to Fuel Evaluation Model" (Approval of CEN-161(B), Supplement 1-P)(21) CEN-372-P-A, "Fuel Rod Maximum Allowable Gas Pressure," May 1990 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2)(22) Letter from MA. A. B. Scherer (CE) to Mr. J. R. Miller (NRC) dated December 15, 1981, LD-81-095, Enclosure 1-P, "C-E ECCS Evaluation Model Flow Blockage Analysis" (Methodology for Specifications 3.2.1, 3.2.2)(23) CENPD-132, Supplement 3-P-A, "Calculative Methods for the C-E Large Break LOCA Evaluation Model for the Analysis of C-E and W Designed NSSS," June 1985 (Methodology for Specifications 3.2.1, 3.2.2 and approval of Letter LD-81-095, dated December 15, 1981)(24) CENPD-133, Supplement 5, "CEFLASH-4A, a FORTRAN77 Digital Computer Program for Reactor Blowdown Analysis," June 1985 (Methodology for Specifications 3.2.1, 3.2.2)(25) CENPD-134, Supplement 2, "COMPERC-1, a Program for Emergency Refill-Reflood of the Core," June 1985 (Methodology for Specifications 3.2.1, 3.2.2)(26) Letter from Mr. D. M. Crutchfield (NRC) to Mr. A. E. Scherer (CE), dated July 31, 1986,"Safety Evaluation of Combustion Engineering ECCS Large Break Evaluation Model and Acceptance for Referencing of Related Licensing Topical Reports (Approval of CENPD-133, Supplement 5 and CENPD-134, Supplement 2)(27) CENPD-135, Supplement 5-P, "STRIK[I-I, A Cylindrical Geometry Fuel Rod Heat Transfer Program," April 1977 (Methodology for Specifications 3.2.1, 3.2.2)Calvert Cliffs 1, Cycle 17 COLR Page 22 of 24 Rev. I Calvert Cliffs 1, Cycle 17 COIR Page 22 of 24 Rev. I (28) Letter from Mr. R L. Baer (NRC) to Mr. A. E. Scherer (CE) dated September 6, 1978,"Evaluation of Topical Report CENPD-135, Supplement 5" (29) CENPD-137, Supplement 1-P, "Calculative Methods for the C-E Small Break LOCA Evaluation Model," January 1977 (Methodology for Specifications 3.2.1, 3.2.2)(30) CENPD-133, Supplement 3-P, "CEFLASH-4AS, "A Computer Program for the Reactor Blowdown Analysis of the Small Break Loss of Coolant Accident," January 1977 (Methodology for Specifications 3.2.1, :3.2.2)(31) Letter from Mr. K Kniel (NRC) to Mr. A. E. Scherer (CE), dated September 27, 1977,"Evaluation of Topical Reports CENPD-133, Supplement 3-P and CENPD-137, Supplement 1-P" (32) CENPD-138, Supplement 2-P, "PARCH, A FORTRAN-IV Digital Program to Evaluate Pool Boiling, Axial Rod and Coolant Heatup," January 1977 (Methodology for Specifications 3.2.1, 3.2.2)(33) Letter from Mr. C. Aniel (NRC) to Mr. A. E. Scherer, dated April 10, 1978. "Evaluation of Topical Report CENPD-138, Supplement 2-P" (34) Letter from Mr. A. E. Lundvall, Jr. (BG&E) to Mr. J. R. Miller (NRC) dated February 22, 1985, "Calvert Cliffs Nuclear Power Plant Unit 1; Docket No. 50-317, Amendment to Operating License DPR-53, Eighth Cycle License Application" (Section 7.3.2 contains Methodology for Specifications 3.1.1 and 3.1.3 and 3.1.6)(35) Letter from Mr. D. H. Jaffe (NRC) to Mr. A. E. Lundvall, Jr. (BG&E), dated May 20, 1985, "Safety Evaluation Report Approving Unit 1 Cycle 8 License Application" (36) Letter from Mr. A. E. Lundvall, Jr. (BG&E) to Mr. R. A. Clark (NRC), dated September 22, 1980, "Amendment to Operating License No. 50-317, Fifth Cycle License Application" (Section 7.1.2 contains Methodology for Specifications3.1.1, 3.9.1)(37) Letter from Mr. R. A. Clark (NRC) to Mr. A. E. Lundvall, Jr. (BG&E), dated December 12, 1980, "Safety Evaluation Report Approving Unit 1, Cycle 5 License Application" (38) Letter from Mr. J. A. Tieman (BG&E) to Mr. A. C. Thadani (NRC), dated October 1, 1986, "Calvert Cliffs Nuclear Power Plant Unit Nos. 1 & 2, Docket Nos. 50-317 &50-318, Request for Amendment" (Methodology for Specifications 3.1.4)(39) Letter from S. A. McNeil, Jr. (NRC) to Mr. J. A. Tieman (BG&E), dated July 7, 1987, Docket Nos. 50-317 and 50-318, Approval of Amendments 127 (Unit 1) and 109 (Unit 2)(Support for Specification 3.1.4)(40) CENPD-188-A, "HERMITE:

A Multi-Dimensional Space-Time Kinetics Code for PWR Transients," July 1976 (Methodology for Specifications 3.3.1, 3.1.6, 3.2.1, 3.2.2, 3.2.3, 3.2.5)Calvert Cliffs 1, Cycle 17 COLR Page 23 of 24 Rev. 1 Calvert Cliffs 1, Cycle 17 COLR Page 23 of 24 Rev. I (41) The power distribution monitoring system referenced in various specifications and the BASES, is described in the following documents:

i. CENPD-153-P, Revision 1-P-A, "Evaluation of Uncertainty in the Nuclear Power Peaking Measured by the Self-FPowered, Fixed Incore Detector System," May 1980 (Methodology forSpecifications 3.3.1, 3.1.6, 3.2.1, 3.2.2,3.2.3,3.2.5) ii. CEN-1 19(B)-P, "BASSS, Use of the Incore Detector System to Monitor the DNB-LCO on Calvert Cliffs Unit 1 and Unit 2," November 1979 (Referenced in Appendix B of Unit 2 Cycle 9 License Application) iii. Letter from Mr. G. C. Creel (BCF&E) to NRC Document Control Desk, dated February 7, 1989, "Calvert Cliffs Nuclear Power Plant Unit No. 2; Docket No. 50-318, Request for Amendment, Unit 2 Ninth Cycle License Application" (Appendix B contains Methodologies for Specifications 3.1.4, 3.2.2, 3.2.3, 3.2.5)iv. Letter from Mr. S. A. McNeil, Jr. (NRC) to Mr. G. C. Creel (BG&E), dated January 10, 1990, "Safety Evaluation Report Approving Unit 2 Cycle 9 License Application" (42) Letter from Mr. D. G. McDonald, Jr. (NRC) to Mr. R. E. Denton (BGE), dated May 11, 1995, "Approval to Use Convolution Technique in Main Steam Line Break Analysis -Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 (TAC Nos. M90897 and M90898)'(Methodology for Specification 3.2.3).(43) CENPD-387-P-A, Latest Approved Revision, "ABB Critical Heat Flux Correlations for PWR Fuel".(44) CENPD-199-P, Supplement 2-P-A, Appendix A, Latest Approved Revision, "CE Setpoint Methodology, " June 1998.(45) CENPD-404-P-A, Latest Approved Revision, "Implementation of ZIRLO T m Cladding Material in CE Nuclear Power Fuel Assembly Designs" (46) CENPD-132, Supplement 4-P-A, Latest Approved Revision, "Calculative Methods for the CE Nuclear Power Large Break LOCA Evaluation Model" (47) CENPD-137, Supplement 2-P-A, Latest Approved Revision, "Calculative Methods for the ABB CE Small Break LOCA Evaluation Model" Calvert Cliffs 1, Cycle 17 COLR Page 24 of 24 Rev. I Calvert Cliffs 1, Cycle 17 COLRt Page 24 of 24 Rev. I