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OapsTechnical Specification 5.6.5.d
Palo VerdeNuclear Generating Station5871 S. Wintersburg Road Tonopah, AZ 85354
102-07682-MSC/MDD April 12, 2018
ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Dear Sirs:
Palo Verde Nuclear Generating Station Units 1, 2, and 3 Docket Nos. STN 50-528, 50-529, and 50-530 Unit 1 Core Operating Limits Report (COLR), Revision 25 Unit 2 Core Operating Limits Report (COLR), Revision 21 Unit 3 Core Operating Limits Report (COLR), Revision 24
Pursuant to Palo Verde Nuclear Generating Station (PVNGS) Technical Specifications, Section 5.6.5.d, enclosed are the Units 1, 2, and 3 Core Operating Limits Report (COLR), Revisions 25, 21, and 24, respectively, which were made effective April 6, 2018. The change implemented by these revisions includes the following:
• Revision to Analytical Methods to add the references associated with Westinghouse Next Generation Fuel (NGF).
• Administrative and editorial corrections made for clarity.
These changes affect several pages. Revision bars have been applied to the changes.
No commitments are being made to the NRC by this letter. Should you need further information regarding this submittal, please contact Matthew S. Cox, Licensing Section Leader at (623) 393-5753.
Sincerely,
Michael D. DiLorenzoNuclear Regulatory Affairs Department Leader
MSC/MDD/TMJ/sma
Enclosures:
Unit 1 Core Operating Limits Report, Revision 25 Unit 2 Core Operating Limits Report, Revision 21 Unit 3 Core Operating Limits Report, Revision 24
cc:K. M. Kennedy S. P. Lingam C. A. Peabody
NRC Region IV Regional Administrator NRC NRR Project Manager for PVNGS NRC Senior Resident Inspector for PVNGS
A member of the STARS Alliance LLC Callaway • Diablo Canyon • Palo Verde • Wolf Creek
Enclosure
PVNGS Unit 1 Core Operating Limits Report (COLR)Revision 25
PALO VERDE NUCLEAR GENERATING STATION (PVNGS)
UNITl
CORE OPERATING LIMITS REPORT
Revision 25
Effective April 6, 2018
Responsible EngineerDate
Wenzel,J DN:cn=Wenzel, Richard
Rirh::^rrl /\R(Z99534)rVIV-llOILJ jj Re^on: lam the author of
y?„^thisdocument
R(Z995J4)Independent ReviewerDate
• 1 (P Digitally signed by Geiszler,(j G 1 SZ1 0 r, 11 Keliy J(Z07064))1 DN: cn=Geiszler, Kelly
KpIIv /\j(Z07064)1 vC * * y K Reason: 1 have reviewed this//__ document)
J{Z0706J^)Responsible Section LeaderDate
^9 r 1 S 0 n ^ li p|g|,3||y Oiatles
1 Ef(V55086)1^ ^ ^ 1 ^ C jj \DN: cn=Karlson, Charles F(V55086)
^ 1 1 cl 1 1^0 jJ R^on: lam approving thisM do^n^jit=sa^
r- l\ Mw~ r-^0^8.04.03 08:25:18-07'00'F(V55086)----------------------------------------------------------------------------------------------------------------------- 1
Page 1 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
Table of Contents
Description
Cover Page
Table of Contents
List of Figures
List of Tables
Affected Technical Specifications
Analytical Methods
Page
1
2
3
4
5
6
CORE Operating Limits
3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open
3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed
3.1.4 Moderator Temperature Coefficient (MTC)
3.1.5 Control Element Assembly (CEA) Alignment
3.1.7 Regulating CEA Insertion Limits
3.1.8 Part Strength CEA Insertion Limits
3.2.1 Linear Eleat Rate (LHR)
3.2.3 Azimuthal Power Tilt (Tq)
3.2.4 Departure From Nucleate Boiling Ratio (DNBR)
3.2.5 Axial Shape Index (ASl)
3.3.12 Boron Dilution Alarm System (BDAS)
3.9.1 Boron Concentration
11
11
11
11
11
12
12
12
12
13
13
13
Page 2 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
List of Figures
Description
Figure 3.1.1-1
Figure 3.1.2-1
Figure 3.1.4-1
Figure 3.1.5-1
Figure 3.1.7-1
Figure 3.1.7-2
Figure 3.1.8-1
Figure 3.2.3-1
Figure 3.2.4-1
Figure 3.2.4-2
Figure 3.2.4-3
Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open
Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed
MTC Acceptable Operation, Modes 1 and 2
Core Power Limit After CEA Deviation
CEA Insertion Limits Versus Thermal Power (COLSS in Service)
CEA Insertion Eimits Versus Thermal Power (COLSS Out of Service)
Part Strength CEA Insertion Eimits Versus Thermal Power
Azimuthal Power Tilt Versus Thermal Power (COLSS in Service)
COLSS DNBR Operating Limit Allowance for Both CEACs Inoperable In Any Operable CPC Channel
DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC(s) Operable)
DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, Both CEACs Inoperable In Any Operable CPC Channel)
Page
14
16
17
18
20
21
22
23
Page 3 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
List of Tables
Description
Table 3.3.12-1 Required Monitoring Frequencies for Backup BoronDilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff> 0.98
Table 3.3.12-2 Required Monitoring Frequencies for Backup BoronDilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff > 0.97
Table 3.3.12-3 Required Monitoring Frequencies for Backup BoronDilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff > 0.96
Table 3.3.12-4 Required Monitoring Frequencies for Backup BoronDilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff > 0.95
Table 3.3.12-5 Required Monitoring Frequencies for Backup BoronDilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95
Page
25
Page 4 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 5.6.5 b of the Palo Verde Technical Specifications.
AFFECTER PVNGS TECHNICAL SPECIFICATIONS '
3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open
3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed
3.1.4 Moderator Temperature Coefficient (MTC)
3.1.5 Control Element Assembly (CEA) Alignment
3.1.7 Regulating CEA Insertion Limits
3.1.8 Part Strength CEA Insertion Limits
3.2.1 Linear Heat Rate (LHR)
3.2.3 Azimuthal Power Tilt (Tq)
3.2.4 Departure From Nucleate Boiling Ratio (DNBR)
3.2.5 Axial Shape Index (ASI)
3.3.12 Boron Dilution Alarm System (BDAS)
3.9.1 Boron Concentration
Page 5 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
ANALYTICAL METHODS
The COLR contains the complete identification for each of the Technical Specification referenced topical reports (i.e., report number, title, revision, date, and any supplements) and correspondence that provide the NRC-approyed analytical methods used to determine the core operating limits, described in the following documents:
T.SRef#^ Title Report No. Rev Date Suppl
CE Method for Control Element Assem- CENPD- N.A. January N.A.1 bly Ejection Analysis
(NOOl-1301-01204)0190-A 1976
The ROCS and DIT Computer Codes for CENPD- N.A. April 1983 N.A.2 Nuclear Design
(NOOl-1900-01412)266-P-A
Safety Evaluation Report related to the NUREG- N.A. March 1983 1Final Design of the Standard Nuclear 0852
September19830
Steam Supply Reference SystemsJ CESSAR System 80, Docket No. STN L
50-470 December1987 3
Modified Statistical Combination of CEN- 01-P-A May 1988 N.A.4 Uncertainties
(NOOl-1303-01747)356(V)-P-A
System 80™ Inlet Flow Distribution Enclosure N.A. February 1-P4 (NOOl-1301-01228) 1-P toLD-
82-0541993
Calculative Methods for the CE Large CENPD- N.A. March 4-P-A5 Break LOCA Evaluation Model
(NOOl-1900-01192)132 2001 Rev. 1
Calculative Methods for the CE Small CENPD- N.A. April 2-P-A6 Break LOCA Evaluation Model
(NOOl-1900-01185)137-P 1998
Letter: O.D. Parr (NRC) to F. M. Stern N.A. N.A. June 13, N.A.(CE), (NRC Staff Review of the 1975
7 Combustion Engineering ECCS Evaluation Model). NRC approval for: 5.6.5.b.6.
Page 6 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
T.SRef#"‘ Title Report No. Rev Date Suppl
8
Letter: K. Kniel (NRC) to A. E. Scherer (CE), (Evaluation of Topical Reports CENPD 133, Supplement 3-P and CENPD-137, Supplement 1-P). NRC approval for 5.6.5.b.6.
N.A. N.A. September 27,1977
N.A.
9 Fuel Rod Maximum Allowable Pressure (NOO1-0201-00026)
CEN-372-P-A
N.A. May1990
N.A.
10
Letter: A. C. Thadani (NRC) to A. E. Scherer (CE), ("Acceptance forReference CE Topical Report CEN-372- P"). NRC approval for 5.6.5.b.9.
N.A. N.A. April 10,1990
N.A.
11
Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-005)
NFM-005 1 August2007
N.A.
12Technical Description Manual for the CENTS Code Volume 1 (CENTS-TD MANUAL-VOL 1)
CE-NPD282-P-AVols. 1
2 March2005
N.A.
12Technical Description Manual for the CENTS Code Volume 2 (CENTS-TD MANUAL-VOL 2)
CE-NPD282-P-AVols. 2
2 March2005
N.A.
12Technical Description Manual for the CENTS Code Volume 3 (CENTS-TD MANUAL-VOL 3)
CE-NPD282-P-AVols. 3
2 March2005
N.A.
13
Implementation ofZIRLO^^ Cladding Material in CE Nuclear Power Fuel Assembly Designs (NOOl-1900-01329)
CENPD-404-P-A
0 November2001
N.A.
13
Optimized ZIRLO^^^(NOOl-0203-00611)
CENPD-404-P-AAddendum1-A
0 July 2006 N.A.
13
Westinghouse Clad Corrosion Model for ZIRLO and Optimized ZIRLOT’M (NOO 1-0205-00006)
CENPD-404-P-AAddendum2-A
0 October2013
N.A.
Page 7 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
T.S Title Report No. Rev Date Suppl
14
HERMITE, A Multi-Dimensional Space-Time Kinetics Code for PWR Transients(HERMITE-TOPICAL)
CENPD-188-A
N.A. July1976
N.A.
15
TORC Code, A Computer Code for Determining the Thermal Margin of a Reactor Core (NOOl-1301-01202)
CENPD-161-P-A
N.A. April1986
N.A.
16
CETOP-D Code Structures and Modeling Methods for San Onofre Nuclear Generating Station Units 2 and 3 (NOOl-1301-01185)
CEN-160(S)-P
1-P September1981
N.A.
17
“Safety Evaluation related to Palo Verde Nuclear Generating Station, Unit 2 (PVNGS-2) Issuance of Amendment on Replacement of Steam Generators and Uprated Power Operation, (September29,2003) and“Safety Evaluation related to Palo Verde Nuclear Generating Station, Units 1,2, and 3 - Issuance of Amendments Re: Replacement of Steam Generators and Uprated Power Operations andAssociated Administrative Changes, (November 16, 2005).”
N.A. N.A. September29,2003
November16,2005
N.A.
18CPC Methodology Changes for the CPC Improvement Program (NOOl-1303-02283)
CEN-310-P-A
0 April1986
N.A.
19Loss of Flow, C-E Methods for Loss ofFlow Analysis(NOOl-1301-01203)
CENPD-183-A
0 June1984
N.A.
20Methodology for Core Designs Containing Erbium Burnable Absorbers (NOO1-0201-00035)
CENPD-382-P-A
0 August1993
N.A.
Page 8 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
Ref#^ Title Report No. Rev Date Suppl
Verification of the Acceptability of a 1- Pin Burnup Limit of 60 MWD/kgU for Combustion Engineering 16x16 PWR Fuel(NOO1-0201-00042)
CEN-386-P-A
August1992
N.A.
CE 16x16 Next Generation Fuel Core Reference Report (NOO 1-0203-00614)
WCAP-16500-P-A
August2007
N.A.
Application of CE Setpoint Methodology for CE 16x16 Next Generation Fuel (NGF)(NOOl-0205-00063)
WCAP-16500-P-A
December2010
Evolutionary Design Changes to CE 16x16 Next Generation Fuel and Method for Addressing the Effects of End-of-Life Properties on Seismic and Eoss of Coolant Accident Analysis (NOOl-0205-00048)
WCAP-16500-P-A
June 2016 2-P-A
23
VIPRE-01 Modeling and Qualification for Pressurized Water Reactor Non-EOCA Thermal-Hydraulic Safety Analysis(NOO1-0205-00002)
WCAP-14565-P-A
October1999
N.A.
Addendum 1 to WCAP-14565-P-A Qualification of ABB Critical Heat Flux Correlations with VlPRE-01 Code (NOOl-0205-00003)
WCAP-14565-P-A,Addendum1-A
August2004
N.A.
23
Addendum 2 to WCAP-14565-P-A, Extended Applications of ABB-NV Correlation and Modified ABB-NV Correlation WLOP for PWR Eow Pressure Applications (NOOl-0205-00004)
WCAP-14565-P-A,Addendum2-P-A
April 2008 N.A.
ABB Critical Heat Flux Correlations forPWR Fuel(NOO1-0205-00042)
CENPD-387-P-A
May 2000 N.A.
Page 9 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
T.SRef#^ Title Report No. Rev Date Suppl
25
Westinghouse Correlations WSSV and WSSV-T for Predicting Critical HeatFlux in Rod Bundles with Side-Supported Mixing Vanes (NOOl-0203-00615)
WCAP-16523-P-A
0 August2007
N.A
26
Implementation of Zirconium Diboride Burnable Absorber Coatings in CE Nuclear Power Fuel Assembly Designs (NOOl-0205-00226)
WCAP-16072-P-A
0 August2004
N.A.
a. Corresponds to the reference number specified in Technical Specification 5.6.5
Page 10 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
The cycle-specific operating limits for the specifications listed are presented below.
3.1.1 - Shutdown Margin rSDM) - Reactor Trip Breakers Open
The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1-1.
3.1.2- Shutdown Margin CSOM) - Reactor Trip Breakers Closed
The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.2-1.
3.1.4- Moderator Temperature Coefficient ('MTO
The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.4-1.
3.1.5 - Control Element Assembly rCEAl Alignment
With one or more full-strength or part-strength CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES 1 and 2 core power reduction is specified in Figure 3.1.5-1. The required power reduction is based on the initial power before reducing power.
3.1.7 - Regulating CEA Insertion Limits
With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits' shown in Figure 3.1.7-1^; with COLSS OUT OF SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits' shown in Figure 3.1.7-2.^Regulating Groups 1 and 2 CEAs shall be maintained > fully withdrawn'’ ^ while in Modes 1 and 2 (except while performing SR 3.1.5.3). When > 20% power Regulating Group 3 shall be maintained > fully withdrawn.'’ ^
' A reactor power cutback will cause either (Case 1) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with no sequential insertion of additional Regulating Groups (Groups 1,2, 3, and 4) or (Case 2) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with all or part of the remaining Regulating Groups (Groups 1,2, 3, and 4) being sequentially inserted. In either case, the Transient Insertion Limit and withdrawal sequence specified in the CORE OPERATING LIMITS REPORT can be exceeded for up to 2 hours.
^ The Separation between Regulating Groups 4 and 5 may be reduced from the 90 inch value specified in Figures 3.1.7-1 and 3.1.7-2 provided that each of the following conditions are satisfied:
a) Regulating Group 4 position is between 60 and 150 inches withdrawn.
Page 11 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
b) Regulating Group 5 position is maintained at least 10 inches lower than Regulating Group 4 position.
c) Both Regulating Group 4 and Regulating Group 5 positions are maintained above the Transient Insertion Limit specified in Figure 3.1.7-1 (COLSS In Service) or Figure 3.1.7-2 (COLSS Out of Service).
^ Fully withdrawn (FW) is defined as >147.75” (Pulse Counter indication) and >145.25” (RSPT indication). No further CEA withdrawal above FW is required for CEAs’ to meet the Transient Insertion Limit (TIL) requirements.
3.1.8 - Part Strength CEA Insertion Limits
The part strength CEA groups shall be limited to the insertion limits shown in Figure 3.1.8-1.
3.2.1 - Linear Heat Rate (LHR)
The linear heat rate limit of 13.1 kW/ft shall be maintained.
3.2.3 - Azimuthal Power Tilt ITgl
The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 10% with COLSS IN SERVICE when power is greater than 20% and less than or equal to 50%. Additionally, the AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 5% with COLSS IN SERVICE when power is greater than 50%. See Figure 3.2.3-1.
3.2.4 - Departure From Nucleate Boiling Ratio lONBR^
COLSS IN SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - Maintain COLSS calculated core power less than or equal to COLSS calculated core power operation limit based on DNBR decreased by the allowance shown in Figure 3.2.4-1.
COLSS OUT OF SERVICE and CEAC(s) OPERABLE - Operate within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.
COLSS OUT OF SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - Operate within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel with both CEACs INOPERABLE.
Page 12 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
3.2.5 - Axial Shape Index TASD
The core average AXIAL SHAPE INDEX (ASI) shall be maintained within the following limits:
COLSS OPERABLE-0.18 < ASI <0.17 for power > 50%-0.28 < ASI <0.17 for power >20% and < 50%
COLSS OUT OF SERVICE (CPC)-0.10 < ASI < 0.10 for power >20%
3.3.12 - Boron Dilution Alarm System (BDAS)
With one or both start-up channel high neutron flux alarms inoperable, the RCS boron concentration shall be determined at the applicable monitoring frequency specified in Tables 3.3.12-1 through 3.3.12-5.
3.9.1 - Boron Concentration
The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration > 3000 ppm.
Page 13 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25
FIGURE 3.1.1-1SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE
REACTOR TRIP BREAKERS OPEN
(500,5.0|l ■REGION OF
ACCEPTABLE
OPERATION
REGIONiOF
UNACCEPTABLE
OPERATION
(350, 1.0)
COLD LEG TEMPERATURE (°F)
Page 14 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
FIGURE 3.1.2-1SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE
REACTOR TRIP BREAKERS CLOSED
<3
gO02<Z
oQHZ00
(500, 6.5)
RE
AC
GION OF
CEPTABLl5
OPERATION
(350, 4.0)
REGION 0
UNACCEP
F
tABLE
OPERATIC
i............... i......... .100 200 300 400
COLD LEG TEMPERATURE (°E)500 600
Page 15 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25
FIGURE 3.1.4-1MTC ACCEPTABLE OPERATION, MODES 1 AND 2
(I00%,0)V • • ■ •
(50%, 0.0)
MTGAREAGF
ACCEPTABLE
OPERATION
< -3.0
(100%,-4.4
CORE POWER LEVEL (% OF RATED THERMAL POWER)
Maintain Operation within Boundary TECH SPEC 3.1.4 Maximum Upper Limit
Page 16 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
FIGURE 3.1.5-1CORE POWER REDUCTION AFTER CEA DEVIATION*
^<100% to >80% RTF
<80% to >70% RTF
‘<70% to >45% RTF
^5% RTF
TIME AFTER DEVIATION, MINUTES
* WHEN CORE POWER IS REDUCED TO 35% OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED.
* NO POWER REDUCTION IS REQUIRED FOR A SINGLE CEA MISALIGNMENT IF THE FOLLOWING CONDITIONS ARE CONTINUOUSLY MET FROM THE TIME OF DEVIATION:
- > 95 % RATED THERMAL POWER- COLSS IN SERVICE AND CEACS IN SERVICE- AZIMUTHAL POWER TILT IS LESS THAN 3.0 %- ALL CEAS REMAIN ABOVE 142.5" WITHDRAWN BY PULSE COUNTER
AND ABOVE 140.1" WITHDRAWN BY RSPT INDICATION
Page 17 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
FIGURE 3.1.7-1CEA INSERTION LIMITS VERSUS THERMAL POWER
(COLSS IN SERVICE)
0.9
0.8
M
oa.<SocuXHG[S<PSH.Ozo<a:u.
0.6
0.4
0.3
0.1
0.0
NOTE:See Footnote in Section 3.1.7 for applicability following a Reactor Power Cutback.To meet tbe Transient Insertion Limit (TIL) all conditions below must be met:
CEA Groups 1 and 2 must be > fully withdrawn* (see definition below) in MODE 1 and MODE 2.
ANDCEA Group 3 must be > fully withdrawn* for
power levels >20%.CEA Group 3 must be withdrawn > 60” for
power >0% and <20%.AND
CEA Group 4 must be > fully withdrawn* for power levels > 70.87%.CEA Group 4 must be withdrawn > the
group 4 TIL (TIL4) as indicated on the graph or by the equation:T1L4 = (172.5" X Fractional Power) + 25.5" (for power > 20% and < 70.87%).
ANDCEA Group 5 must be withdrawn > the
group 5 TIL (TIL5) as indicated on the graph or by the equation:TIL5 = (172.5" X Fractional Power) - 64.5" (for power > 37.39% and < 100%).
GROUP 5I- 1- 1- 1-
150* 120 90 60
I—
-I I-GROUP 3— I- 1- 1- 1 I-
GROUP1
-I- 1- 1- 1
30 0 150* 120 90 60 30 0 150* 120 90 60 30 0GROUP 4 GROUP 2
-I---1-----1---- 1---- 1 I----1---- 1---- 1---- 1---- 1150* 120 90 60 30 0 150* 120 90 60 30 0
CEA POSITION (INCHES WITHDRAWN)
* Fully Withdrawn (FW) is defined as > 147.75” (Pulse Counter) and > 145.25” (RSPT).No further CEA withdrawal above FW is required for CEAs’ to meet the TIE requirements.
Page 18 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
0.9
0.8
FIGURE 3.1.7-2CEA INSERTION LIMITS VERSUS THERMAL POWER
(COLSS OUT OF SERVICE)
NOTE:See Footnote in Section 3.1.7 for applicability following a Reactor Power Cutback.To meet the Transient Insertion Limit (TIL) all conditions below must be met:
M
I<QCU
<e:tL.o2;ou<
0.6
0.4
0.3
0.0
ill., iiii!§isi
:
CEA Groups 1 and 2 must be > fully withdrawn* (see definition below) in MODE 1 and MODE 2.
ANDCEA Group 3 must be > fully withdrawn* for
power levels >20%.CEA Group 3 must be withdrawn > 60” for
power > 0% and < 20%.AND
CEA Group 4 must be > fully withdrawn* for power levels > 54.97%.CEA Group 4 must be withdrawn > the
group 4 TIL (TIL4) as indicated on the graph or by the equation:TIL4 = (250.9" X Fractional Power) + 9.82" (for power > 20% and < 54.97%).
ANDCEA Group 5 must be withdrawn > the
group 5 TIL (TIL5) as indicated on the graph or by the equations: ,TIL5 = (250.9" X Fractional Power) - 80.18" (for power > 31.96% and < 75.00%).TIL5 = 108" (for power lever > 75.00%).
GROUP 5I----1---- 1----i-
150* 120 90 60
I —
-I-GROUP 3
I--- 1----1----1----1- -I I--- i-GROUP1-I--- 1----i----1
30 0 150* 120 90 60 30 0 150* 120 90 60 30 0GROUP4 GROUP 2
-I---1-----1---- 1---- 1 I----1-----1---- 1---- 1---- 1150* 120 90 60 30 0 150* 120 90 60 30 0
CEA POSITION (INCHES WITHDRAWN)
* Fully Withdrawn (FW) is defined as > 147.75” (Pulse Counter) and > 145.25” (RSPT).No further CEA withdrawal above FW is required for CEAs’ to meet the TIL requirements.
Page 19 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
FIGURE 3.1.8-1PART STRENGTH CEA INSERTION LIMITS
VERSUS THERMAL POWER
z<QK
c/5WXozzo
oOh
<:wuXa§aH00HQi<Oh
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
TRANSIENT INSERTION LIVIIT (75.0 NCHES).
OPER
UNAC
AT^O^
CEPT/
..1.1 1.. 1
Oij
HW
c«
a, H
.......
ATIG?
iuCTEi.......
p
o a B D B B eLIMIT •C
/5 "
h"
^ a —
GK
) aIf
x ° B PJ
g K
B U
s §
insaaBBB
s) :; LoivfG TER A STEA DY ST/ cTE INSERTIOI
OPERATIOI' EPTAI5LE
i . . . . i . . . .0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2
FRACTION OF RATED THERMAL POWER0.0
Page 20 of 29 '
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
FIGURE 3.2.3-1AZIMUTHAL POWER TILT VERSUS THERMAL POWER
(COLSS IN SERVICE)20.0
g,t-J
ciwo0.
<XHDSN<
15.0
10.0
5.0
0.0 20.0
REGION OF UNACCEPTABLE OPERATION
REGION OE ACCEPTABLE OPERATION
30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0CORE POWER LEVEL
(% OF RATED THERMAL POWER)
Page 21 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
FIGURE 3.2.4-1COLSS DNBR OPERATING LIMIT
ALLOWANCE FOR BOTH CEACs INOPERABLE IN ANY OPERABLE CPC CHANNEL
(95, 20)
CORE POWER LEVEL (% OF RATED THERMAL POWER)
Page 22 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
FIGURE 3.2A-2DNBR MARGIN OPERATING LIMIT BASED ON
THE CORE PROTECTION CALCULATORS(COLSS OUT OF SERVICE, CEAC(s) OPERABLE)
ACCEPTABLE OPERATION ANY POWER LEVEL AT LEAST 1 CEAC OPERABLE IN EACH OPERABLE CPC CHANNEL
(-0.1,2.28)
Z 2.2I ACCEPTABLE OPERATION ;
I POWER AT OR ABOVE 90% I5 AT LEAST 1 CEAC OPERABLE IN ;
9 ; ; ■ n
I EACH OPERABLE CPC CHANNEL|
(0.05, 2.00)
UNACCEPTABLE
OPERATION
CORE AVERAGE ASI
Page 23 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25
FIGURE 3.2A-3DNBR MARGIN OPERATING LIMIT BASED ON
THE CORE PROTECTION CALCULATORS (COLSS OUT OE SERVICE, BOTH CEACs INOPERABLE
IN ANY OPERABLE CPC CHANNEL)
3.5
a:PQzQ
IZIo
3.3
3.2
3.1
3.0 -0.20
ACCEPTABLE OPERATION
ANY POWER LEVEL |
BOTH CEACs INOPERABLE
IN ANY OPERABLE CPC
CHANNEL
............:.......... ..............................
(-0.1;,3.27) i
i UNACCEPTABLE
OPERATION
-0.15 -0.10 -0.05 0.00 0.05CORE AVERAGE ASI
0.10 0.15
Page 24 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
Table 3.3.12-1
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Keff > 0.98
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 0.5 hours ONA ONA
4 not on SCS 12 hours 0.5 hours ONA ONA
5 not on SCS 8 hours 0.5 hours ONA ONA
4 & 5 on SCS ONA ONA ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 25 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
Table 3.3.12-2
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 > K^ff > 0.97
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 1 hour 0.5 hours ONA
4 not on SCS 12 hours 1.5 hours 0.5 hours ONA
5 not on SCS 8 hours 1.5 hours 0.5 hours ONA
4 & 5 on SCS 8 hours 0.5 hours ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 26 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
Table 3.3.12-3
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 > K^ff > 0.96
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 2.5 hours 1 hour ONA
4 not on SCS 12 hours 2.5 hours I hour 0.5 hours
5 not on SCS 8 hours 2.5 hours 1 hour 0.5 hours
4 & 5 on SCS 8 hours 1 hour ONA ONA
Notes: SCS = Shutdown Cooling SystemON A = Operation Not Allowed
Page 27 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
Table 3.3.12-4
REQUIRED MONTTORWG FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 > Ke^> 0.95
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 1 2 3
3 12 hours 3 hours 1 hour 0.5 hours
4 not on SCS 12 hours 3.5 hours 1.5 hours 0.75 hours
5 not on SCS 8 hours 3.5 hours 1.5 hours 0.75 hours
4 & 5 on SCS 8 hours 1.5 hours 0.5 hours ONA
Notes: SCS = Shutdown Cooling SystemON A = Operation Not Allowed
Page 28 of 29
PVNGS UNIT 1 CORE OPERATING LIMITS REPORT Revision 25 |
Table 3.3.12-5
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K^ff < 0.95
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 4 hours 1.5 hours 1 hour
4 not on SCS 12 hours 4.5 hours 2 hours 1 hour
5 not on SCS 8 hours 4.5 hours 2 hours 1 hour
4 & 5 on SCS 8 hours 2 hours 0.75 hours ONA
6 24 hours 1.5 hours ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 29 of 29
Enclosure
PVNGS Unit 2 Core Operating Limits Report (COLR)Revision 21
PALO VERDE NUCLEAR GENERATING STATION (PVNGS)
UNIT 2
CORE OPERATING LIMITS REPORT
Revision 21
Effective April 6, 2018
Responsible EngineerDate
Wenzel, CSSSS"""'' U DN: cn=Wenzel, Richard
Rirh;^rH AP(Z99534)I'lV-l IQI^ H R^son: 1 am the author of thisj/^,^d(^umGriDi
R(Z9953^)Independent ReviewerDate
• 1 (P Digitally signed by Geiszler,beiSZler, | KeHyJ(Z07064)
} DN: cn=Geiszler, KellyKpIIv /\j(Z07064)l\d 1 y // Reason: 1 have reviewed this//,^documGrit>
J(Z070^) 08:14:38
Responsible Section LeaderDate Digitally signed by Karlson, Charle:
1 I\F(V55086)1 h ^ ^ 1 O C // cn=Karlson, Charles F(V55086)
1 1 Cl 1 1^^ II Reason: i am approving this// dement =3s^F(V550>)
Page 1 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
Table of Contents
Description
Cover Page
Table of Contents
List of Figures
List of Tables
Affected Technical Specifications
Analytical Methods
Page
1
2
3
4
5
6
CORE Operating Limits
3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open
3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed
3.1.4 Moderator Temperature Coefficient (MTC)
3.1.5 Control Element Assembly (CEA) Alignment
3.1.7 Regulating CEA Insertion Limits
3.1.8 Part Strength CEA Insertion Limits
3.2.1 Linear Heat Rate (LHR)
3.2.3 Azimuthal Power Tilt (Tq)
3.2.4 Departure From Nucleate Boiling Ratio (DNBR)
3.2.5 Axial Shape Index (ASI)
3.3.12 Boron Dilution Alarm System (BDAS)
3.9.1 Boron Concentration
2
2
2
12
13
13
13
Page 2 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
List of Figures
Description
Figure 3.1.1-1
Figure 3.1.2-1
Figure 3.1.4-1
Figure 3.1.5-1
Figure 3.1.7-1
Figure 3.1.7-2
Figure 3.1.8-1
Figure 3.2.3-1
Figure 3.2.4-1
Figure 3.2.4-2
Figure 3.2.4-3
Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open
Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed
MTC Acceptable Operation, Modes 1 and 2
Core Power Limit After CEA Deviation
CEA Insertion Limits Versus Thermal Power (COLSS in Service)
CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)
Part Strength CEA Insertion Limits Versus Thermal Power
Azimuthal Power Tilt Versus Thermal Power (COLSS in Service)
COLSS DNBR Operating Limit Allowance for Both CEACs Inoperable In Any Operable CPC Channel
DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC(s) Operable)
DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, Both CEACs Inoperable In Any Operable CPC Channel)
Page
14
16
17
18
20
.21
22
23
Page 3 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
List of Tables
Description
Table 3.3.12-1
Table 3.3.12-2
Table 3.3.12-3
Table 3.3.12-4
Table 3.3.12-5
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Kefl^ 0.98
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff > 0.97
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff > 0.96
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff > 0.95
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95
Page
25
27
Page 4 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 5.6.5 b of the Palo Verde Technical Specifications.
AFFECTED PVNGS TECHNICAL SPECIFICATIONS
3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open
3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed
3.1.4 Moderator Temperature Coefficient (MTC)
3.1.5 Control Element Assembly (CEA) Alignment
3.1.7 Regulating CEA Insertion Limits
3.1.8 Part Strength CEA Insertion Limits
3.2.1 Linear Heat Rate (LHR)
3.2.3 Azimuthal Power Tilt (Tq)
3.2.4 Departure From Nucleate Boiling Ratio (DNBR)
3.2.5 Axial Shape Index (ASI)
3.3.12 Boron Dilution Alarm System (BDAS)
3.9.1 Boron Concentration
Page 5 of29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
ANALYTICAL METHODS
The COLR contains the complete identification for each of the Technical Specification referenced topical reports (i.e., report number, title, revision, date, and any supplements) and correspondence that provide the NRC-approved analytical methods used to determine the core operating limits, described in the following documents:
T.SRef#^ Title Report No. Rev Date Suppl
1CE Method for Control Element Assembly Ejection Analysis (NOOl-1301-01204)
CENPD-0190-A
N.A. January1976
N.A.
2The ROCS and DIT Computer Codes for Nuclear Design (NOOl-1900-01412)
CENPD-266-P-A
N.A. April 1983 N.A.
3
Safety Evaluation Report related to the Final Design of the Standard Nuclear Steam Supply Reference Systems CESSAR System 80, Docket No. STN 50-470
NUREG-0852
N.A. March 1983
September1983
December1987
1
2
3/
4Modified Statistical Combination ofUncertainties(NOOl-1303-01747)
CEN-356(V)-P-A
01-P-A May 1988 N.A.
4System 80™ Inlet Flow Distribution (NOOl-1301-01228)
Enclosure1-P to LD- 82-054
N.A. February1993
1-P
5Calculative Methods for the CE Large Break LOCA Evaluation Model (NOOl-1900-01192)
CENPD-132
N.A. March2001
4-P-A Rev. 1
6Calculative Methods for the CE Small Break LOCA Evaluation Model (NOOl-1900-01185)
CENPD-137-P
N.A. April1998
2-P-A
7
Letter: O.D. Parr (NRC) to F. M. Stem (CE), (NRC Staff Review of the Combustion Engineering ECCS Evaluation Model). NRC approval for: 5.6.5.b.6.
N.A. N.A. June 13,1975
N.A.
Page 6 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
T.SRef#"* Title Report No. Rev Date Suppl
8
Letter; K. Kniel (NRC) to A. E. Scherer (CE), (Evaluation of Topical Reports CENPD 133, Supplement 3-P and CENPD-137, Supplement 1-P).NRC approval for 5.6.5.b.6.
N.A. N.A. September27, 1977
N.A.
9 Fuel Rod Maximum Allowable Pressure (NOO1-0201-00026)
CEN-372-P-A
N.A. May1990
N.A.
10
Letter; A. C. Thadani (NRC) to A. E. Scherer (CE), ("Acceptance forReference CE Topical Report CEN-372- P"). NRC approval for 5.6.5.b.9.
N.A. N.A. April 10,1990
N.A.
11
Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-005)
NFM-005 1 August2007
N.A.
12Technical Description Manual for the CENTS Code Volume 1 (CENTS-TD MANUAL-VOL 1)
CE-NPD282-P-AVols. 1
2 March2005
N.A.
12Technical Description Manual for the CENTS Code Volume 2 (CENTS-TD MANUAL-VOL 2)
CE-NPD282-P-AVols. 2
2 March2005
N.A.
12Technical Description Manual for the CENTS Code Volume 3 (CENTS-TD MANUAL-VOL 3)
CE-NPD282-P-AVols. 3
2 March2005
N.A.
13
Implementation of ZIRLO^^ Cladding Material in CE Nuclear Power Fuel Assembly Designs (NOOl-1900-01329)
CENPD-404-P-A
0 November2001
N.A.
13
Optimized ZIRLO™(NOO1-0203-00611)
CENPD-404-P-AAddendum1-A
0 July 2006 N.A.
13
Westinghouse Clad Corrosion Model for ZIRLO and Optimized ZIRLO™(NOOl-0205-00006)
CENPD-404-P-AAddendum2-A
0 October2013
N.A.
Page 7 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
T.SRef#"" Title Renort No. Rev Date Suppl
14
HERMITE, A Multi-Dimensional Space-Time Kinetics Code for PWR Transients(HERMITE-TOPICAE)
CENPD-188-A
N.A. July1976
N.A.
15
TORC Code, A Computer Code for Determining the Thermal Margin of a Reactor Core (NOOl-1301-01202)
CENPD- 161-P-A
N.A. April1986
N.A.
, 16
CETOP-D Code Structures and Modeling Methods for San Onofre Nuclear Generating Station Units 2 and 3 (NOOl-1301-01185)
CEN-160(S)-P
1-P September1981
N.A.
17
“Safety Evaluation related to Palo Verde Nuclear Generating Station, Unit 2 (PVNGS-2) Issuance of Amendment on Replacement of Steam Generators and Uprated Power Operation, (September29, 2003) and“Safety Evaluation related to Palo Verde Nuclear Generating Station, Units 1,2, and 3 - Issuance of Amendments Re: Replacement of Steam Generators and Uprated Power Operations andAssociated Administrative Changes, (November 16, 2005).”
N.A. N.A. September29,2003
November16, 2005
N.A.
18CPC Methodology Changes for the CPC Improvement Program (NOOl-1303-02283)
CEN-310-P-A
0 April1986
N.A.
19Loss of Flow, C-E Methods for Loss ofFlow Analysis(NOOl-1301-01203)
CENPD-183-A
0 June1984
N.A.
20Methodology for Core Designs Containing Erbium Burnable Absorbers (NOOl-0201-00035)
CENPD-382-P-A
0 August1993
N.A.
Page 8 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
T.SRef#^ Title Report No. Rev Date Suppl
Verification of the Acceptability of a 1- Pin Bumup Limit of 60 MWD/kgU for Combustion Engineering 16x16 PWR Fuel(NOO1-0201-00042)
CEN-386-P-A
August1992
N.A.
CE 16x16 Next Generation Fuel Core Reference Report (NOOl-0203-00614)
WCAP-16500-P-A
August2007
N.A.
Application of CE Setpoint Methodology for CE 16x16 Next Generation Fuel (NGF)(NOO 1-0205-00063)
WCAP-16500-P-A
December2010
Evolutionary Design Changes to CE 16x16 Next Generation Fuel and Method for Addressing the Effects of End-of-Life Properties on Seismic and Loss of Coolant Accident Analysis (NOO 1-0205-00048)
WCAP-16500-P-A
June 2016 2-P-A
VIPRE-01 Modeling and Qualification for Pressurized Water Reactor Non-LOCA Thermal-Hydraulic Safety Analysis(NOOl-0205-00002)
WCAP-14565-P-A
October1999
N.A.
Addendum 1 to WCAP-14565-P-A Qualification of ABB Critical Heat Flux Correlations with VIPRE-01 Code (NOO1-0205-00003)
WCAP-14565-P-A,Addendum1-A
August2004
N.A.
23
Addendum 2 to WCAP-14565-P-A, Extended Applications of ABB-NV Correlation and Modified ABB-NV Correlation WLOP for PWR Low Pressure Applications (NOO 1-0205-00004)
WCAP-14565-P-A,Addendum2-P-A
April 2008 N.A.
ABB Critical Heat Flux Correlations forPWR Fuel(NOOl-0205-00042)
CENPD-387-P-A
May 2000 N.A.
Page 9 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
T.SRef#"* Title Report No. Rev Date Suppl
25
Westinghouse Correlations WSSV and WSSV-T for Predicting Critical HeatFlux in Rod Bundles with Side-Supported Mixing Vanes (NOO1-0203-00615)
WCAP-16523-P-A
0 August2007
N.A
26
Implementation of Zirconium Diboride Burnable Absorber Coatings in CE Nuclear Power Fuel Assembly Designs (NOOl-0205-00226)
WCAP-16072-P-A
0 August2004
N.A.
a. Corresponds to the reference number specified in Technical Specification 5.6.5
Page 10 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
The cycle-specific operating limits for the specifications listed are presented below.
3.1.1 - Shutdown Margin ('SDM') - Reactor Trip Breakers Open
The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1-1.
3.1.2 - Shutdown Margin ISDMl - Reactor Trip Breakers Closed
The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.2-1.
3.1.4 - Moderator Temperature Coefficient IMTCl
The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.4-1.
3.1.5 - Control Element Assembly ICEAl Alignment
With one or more full-strength or part-strength CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES 1 and 2 core power reduction is specified in Figure 3.1.5-1. The required power reduction is based on the initial power before reducing power.
3.1.7 - Regulating CEA Insertion Limits
With COLSS IN SERVICE, regulating CEA groups shall be limited to thewithdrawal sequence and to the insertion limits' shown in Figure 3.1.7-!^; with COLSS OUT OF SERVICE, regulating CEA groups shall be limited to thewithdrawal sequence and to the insertion limits’ shown in Figure 3.1.7-2.^Regulating Groups 1 and 2 CEAs shall be maintained > fully withdrawn’’ ^ while in Modes 1 and 2 (except while performing SR 3.1.5.3). When > 20% power Regulating Group 3 shall be maintained > fully withdrawn.’’ ^
’ A reactor power cutback will cause either (Case 1) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with no sequential insertion of additional Regulating Groups (Groups 1,2, 3, and 4) or (Case 2) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with all or part of the remaining Regulating Groups (Groups 1,2, 3, and 4) being sequentially inserted. In either case, the Transient Insertion Limit and withdrawal sequence specified in the CORE OPERATING LIMITS REPORT can be exceeded for up to 2 hours.
^ The Separation between Regulating Groups 4 and 5 may be reduced from the 90 inch value specified in Figures 3.1.7-1 and 3.1.7-2 provided that each of the following conditions are satisfied:
a) Regulating Group 4 position is between 60 and 150 inches withdrawn.
Page II of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21
b) Regulating Group 5 position is maintained at least 10 inches lower than Regulating Group 4 position.
c) Both Regulating Group 4 and Regulating Group 5 positions are maintained above the Transient Insertion Limit specified in Figure 3.1.7-1 (COLSS In Service) or Figure 3.1.7-2 (COLSS Out of Service).
^ Fully withdrawn (FW) is defined as >147.75” (Pulse Counter indication) and >145.25” (RSPT indication). No further CEA withdrawal above FW is required for CEAs’ to meet the Transient Insertion Limit (TIL) requirements.
3.1.8- Part Strength CEA Insertion Limits
The part strength CEA groups shall be limited to the insertion limits shown in Figure 3.1.8-1.
3.2.1 - Linear Heat Rate rLHRI
The linear heat rate limit of 13.1 kW/ft shall be maintained.
3.2.3 - Azimuthal Power Tilt ITgl
The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 10% with COLSS IN SERVICE when power is greater than 20% and less than or equal to 50%. Additionally, the AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 5% with COLSS IN SERVICE when power is greater than 50%. See Figure 3.2.3-1.
3.2.4 - Departure From Nucleate Boiling Ratio (ONBRI
COLSS IN SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - Maintain COLSS calculated core power less than or equal to COLSS calculated core power operation limit based on DNBR decreased by the allowance shown in Figure 3.2.4-1.
COLSS OUT OF SERVICE and CEAC(s) OPERABLE - Operate within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.
COLSS OUT OF SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - Operate within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel with both CEACs mOPERABEE.
Page 12 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
3.2.5 - Axial Shape Index rASI)
The core average AXIAL SHAPE INDEX (ASI) shall be maintained within the following limits:
COLSS OPERABLE-0.18 < ASI <0.17 for power > 50%-0.28 < ASI <0.17 for power >20% and < 50%
COLSS OUT OF SERVICE (CPC)-0.10 < ASI < 0.10 for power >20%
3.3.12 - Boron Dilution Alarm System IBDAS')
With one or both start-up channel high neutron flux alarms inoperable, the RCS boron concentration shall be determined at the applicable monitoring frequency specified in Tables 3.3.12-1 through 3.3.12-5.
3.9.1 - Boron Concentration
The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration > 3000 ppm.
Page 13 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.1.1-1SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE
REACTOR TRIP BREAKERS OPEN
(500, 5.0jREGION OF
ACCEPTABLE
OPERATION
O 3
REGION
UNACCEPTABLE
OPERATION
(350, 1.0)
COLD LEG TEMPERATURE (°F)
Page 14 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.1.2-1SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE
REACTOR TRIP BREAKERS CLOSED
<1g,g0oi.<Sz1QXon
..................
(500, 6.5)
RE
AC
GION OF
CEPTABLI5
OPERATION
(350,4.0)
REGION 0
UNACCEP
F
FABLE
OPERATIC>N
....................... 1 1............ .. i.....................1 1 ........................ i..................100 200 300 400
COLD LEG TEMPERATURE (°F)500 600
Page 15 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.1.4-1MTC ACCEPTABLE OPERATION, MODES 1 AND 2
’ .................
(0%,0.5)(100%,0)
(50%, p.O)
MTG AREAGF
ACCEPTABLE
OPERATION
< -3.0
(10p%,-4.4(0%,-4.
CORE POWER LEVEL (% OF RATED THERMAL POWER)
Maintain Operation within Boundary TECH SPEC 3.1.4 Maximum Upper Limit
Page 16 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.1.5-1CORE POWER REDUCTION AFTER CEA DEVIATION*
'<100% to >80% RTP
<80% to >70% RTP
^70% to >45% RTP
^5% RTP
TIME AFTER DEVIATION, MINUTES
* WHEN CORE POWER IS REDUCED TO 35% OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED.
* NO POWER REDUCTION IS REQUIRED FOR A SINGLE CEA MISALIGNMENT IF THE FOLLOWING CONDITIONS ARE CONTINUOUSLY MET FROM THE TIME OF DEVIATION:
- > 95 % RATED THERMAL POWER- COLSS IN SERVICE AND CEACS IN SERVICE- AZIMUTHAL POWER TILT IS LESS THAN 3.0 %- ALL CEAS REMAIN ABOVE 142.5" WITHDRAWN BY PULSE COUNTER
AND ABOVE 140.1" WITHDRAWN BY RSPT INDICATION
Page 17 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.1.7-1CEA INSERTION LIMITS VERSUS THERMAL POWER
(COLSS IN SERVICE)
02U
oa.J<S02UXHQUH<OCtt.O§
<02H.
0.9
0.8
0.7
0.0
NOTE:See Footnote in Section 3.1.7 for applicabiiity following a Reactor Power Cutback.To meet tbe Transient Insertion Limit (TIL) all conditions below must be met:
CEA Groups 1 and 2 must be > fully withdrawn* (see definition below) in MODE 1 and MODE 2.
ANDCEA Group 3 must be > fully withdrawn* for
power levels >20%.CEA Group 3 must be withdrawn > 60" for
power >0% and <20%.AND
CEA Group 4 must be > fully withdrawn* for power levels > 70.87%.CEA Group 4 must be withdrawn > the
group 4 TIL (TIL4) as indicated on the graph or by the equation:TIL4 = (172.5" X Fractional Power) + 25.5" (for power > 20% and < 70.87%).
ANDCEA Group 5 must be withdrawn > the
group 5 TIL (TIL5) as indicated on the graph or by the equation:TIL5 = (172.5" X Fractional Power) - 64.5" (for power > 37.39% and < 100%).
GROUP 5I- 1- ^^1- 1—
150* 120 90 60
-I- 1GROUP 3
-I- 1- 1 — -I -I-
GROUP1
-I- 1- 1- 1
30 0 150* 120 90 60 30 0 150* 120 90 60 30 0GROUP 4 GROUP 2
-I---- 1----1---- 1---- 1 I----1-----1-----1---- 1---- 1150* 120 90 60 30 0 150* 120 90 60 30 0
CEA POSITION (INCHES WITHDRAWN)
* Fully Withdrawn (FW) is defined as > 147.75” (Pulse Counter) and > 145.25” (RSPT).No further CEA withdrawal above FW is required for CEAs’ to meet the TIL requirements.
Page 18 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
0.9
0.8
FIGURE 3.1.7-2CEA INSERTION LIMITS VERSUS THERMAL POWER
(COLSS OUT OF SERVICE)
NOTE:See Footnote in Section 3.1.7 for applicability following a Reactor Power Cutback.To meet tbe Transient Insertion Limit (TIL) all conditions below must be met:
2<sOLUKHQUH<a:u.ozoo<Oi.u.
0.6
0.1
0.0
■fill
CEA Groups 1 and 2 must be > fully withdrawn* (see definition below) in MODE 1 and MODE 2.
ANDCEA Group 3 must be > fully withdrawn* for
power levels >20%.CEA Group 3 must be withdrawn > 60" for
power >0% and <20%.AND
CEA Group 4 must be > fully withdrawn* for power levels > 54.97%.CEA Group 4 must be withdrawn > the
group 4 TIL (TIL4) as indicated on the graph or by the equation:TIL4 = (250.9" X Fractional Power) + 9.82" (for power >20% and < 54.97%).
ANDCEA Group 5 must be withdrawn > the
group 5 TIL (TIL5) as indicated on the graph or by the equations:TIL5 = (250.9" X Fractional Power) - 80.18" (for power > 31.96% and < 75.00%).TIL5 = 108" (for power lever > 75.00%).
GROUP 5I- 1- 1- 1
150* 120 90 60
-I I-GROUP 3— I- 1- 1- I-
GROUP1
-I- 1—
30 0 150* 120 90 60 30 0 150* 120 90 60 30GROUP 4 GROUP 2
-I---- 1--- 1---- 1---- 1 I----1---- 1-----1---- 1---- 1150* 120 90 60 30 0 150* 120 90 60 30 0
CEA POSITION (INCHES WITHDRAWN)
* Fully Withdrawn (FW) is defined as > 147.75” (Pulse Counter) and > 145.25” (RSPT).No further CEA withdrawal above FW is required for CEAs’ to meet the TIL requirements.
Page 19 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.1.8-1PART STRENGTH CEA INSERTION LIMITS
VERSUS THERMAL POWER
zOSQKH
c/5UXuzzoc/5o0.<uoXH0 z w oc H c/5H01 < a.
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
TRANSIENTINSER'hON LIVIIT (75.0 NCHES).
OPER
UNAC
AT^O^
CEPT/
[t
w1..................J. OPER
REST]
ATIO?iilCTE
1............
ABLEiw Ds
Mstea^ a a BB B BERTIO^
n D B a o a BLIMIT
o a a a B B 1
S (112.51 B BBBaa
INCHE
aaaaaaB
s) :i LorvlG TER] DY ST/ cTE INS
OPERATIOr'} ACClEPTAI|LE
. . . . 1i . . . . 1i . . . .0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2
FRACTION OF RATED THERMAL POWER0.0
Page 20 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.2.3-1AZIMUTHAL POWER TILT VERSUS THERMAL POWER
(COLSS IN SERVICE)20.0
15.0
H02U
O(X
<5sN<
10.0
5.0
0.0 20.0
REGION OF UNACCEPTABLE OPERATION
REGION OF ACCEPTABLE OPERATION
30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0CORE POWER LEVEL
(% OF RATED THERMAL POWER)
Page 21 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.2.4-1COLSS DNBR OPERATING LIMIT
ALLOWANCE FOR BOTH CEACs INOPERABLE IN ANY OPERABLE CPC CHANNEL
(95, 20)
U.}
(80, 5)
CORE POWER LEVEL (% OF RATED THERMAL POWER)
Page 22 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.2.4-2DNBR MARGIN OPERATING LIMIT BASED ON
THE CORE PROTECTION CALCULATORS(COLSS OUT OF SERVICE, CEAC(s) OPERABLE)
ACCEPTABLE OPERATION ANY POWER LEVEL AT LEAST 1 CEAC OPERABLE IN EACH OPERABLE CPC CHANNEL
(0.;06, 2.38) (0.1,2.38)
(-0.1,2.28)
Z 2.2; ACCEPTABLE OPERATION \^ if; POWER AT OR ABOVE 90% ?I : ; ; ?; AT LEAST I CEAC OPERABLE IN ? ! ; : : ■I EACH OPERABLE CPC CHANNELj
(0.05, 2.00)
UNACCEPTABLE(-0.1,1.93) ;
OPERATION
CORE AVERAGE ASI
Page 23 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
FIGURE 3.2.4-3DNBR MARGIN OPERATING LIMIT BASED ON
THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, BOTH CEACs INOPERABLE
IN ANY OPERABLE CPC CHANNEL)
os2;Q
si 3.3 ZIuau
3.2
3.1
3.0 -0.20
ACCEPTABLE
ANY POWER 1
BOTH CEACs ]
OPERA
,EVEL
NOPER-
TION
ABLE
IN AN'
CHAN]
Y OPER^
NEL03 r w n O
Ann 'XAw
(-0.1i, 3.27)
UNAC
OPERi H S 1
fLE
........... i i........... i............ i........... i...........-0.15 -0.10 -0.05 0.00 0.05
CORE AVERAGE ASI0.10 0.15 0.20
Page 24 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
Table 3.3.12-1
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Kgff > 0.98
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 0.5 hours ONA ONA
4 not on SCS 12 hours 0.5 hours ONA ONA
5 not on SCS 8 hours 0.5 hours ONA ONA
4 & 5 on SCS ONA ONA ONA ONA
Notes; SCS = Shutdown Cooling System ONA = Operation Not Allowed
Page 25 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
Table 3.3.12-2
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 > Keff > 0.97
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 1 hour 0.5 hours ONA
4 not on SCS 12 hours 1.5 hours 0.5 hours ONA
5 not on SCS 8 hours 1.5 hours 0.5 hours ONA
4 & 5 on SCS 8 hours 0.5 hours ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 26 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
Table 3.3.12-3
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 > K^ff > 0.96
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 2.5 hours 1 hour ONA
4 not on SCS 12 hours 2.5 hours 1 hour 0.5 hours
5 not on SCS 8 hours 2.5 hours 1 hour 0.5 hours
4 & 5 on SCS 8 hours 1 hour ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 27 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
Table 3.3.12-4
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 > K^ff > 0.95
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 3 hours 1 hour 0.5 hours
4 not on SCS 12 hours 3.5 hours 1.5 hours 0.75 hours
5 not on SCS 8 hours 3.5 hours 1.5 hours 0.75 hours
4 & 5 on SCS 8 hours 1.5 hours 0.5 hours ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 28 of 29
PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 21 |
Table 3.3.12-5
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR < 0.95
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 4 hours 1.5 hours 1 hour
4 not on SCS 12 hours 4.5 hours 2 hours 1 hour
5 not on SCS 8 hours 4.5 hours 2 hours 1 hour
4 & 5 on SCS 8 hours 2 hours 0.75 hours ONA
6 24 hours 1.5 hours ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 29 of 29
Enclosure
PVNGS Unit 3 Core Operating Limits Report (COLR)Revision 24
PALO VERDE NUCLEAR GENERATING STATION (PVNGS)
UNIT 3
CORE OPERATING LIMITS REPORT
Revision 24
Effective April 6, 2018
Responsible EngineerDate
Wenzel, CSS™"’)l DN: cn=WenzeI, Richard
Richard AS.,he author of
/7 ^this dooJmentR(Z995^4) Da;ej0ia03.30,5:38:32
Independent ReviewerDate
^ • 1 Digitally signed by Geiszler,LlGISZlGT, 1 Kelly J(Z07064))lDN:cn=Geiszler, Kelly
KpIIV /\J(Z07064)1 \C 1 ■ jr u R^son; 1 have reviewed this/^J^,>-'ddcurnent'^
J (Z070^) D=;-^20,8:04.03 08:,6:5,
Responsible Section LeaderDate
X ff Oigitaliy signed by KarlsonKar son, WchanesFlVSSOSe)ll DN: cn=Karlson, Charles
rhArlpc: /W55086)1 1U 1 I ^ J // R^^on: 1 am approving
,^this docurhentF(V55036)
Page 1 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
Table of Contents
Description
Cover Page
Table of Contents
List of Figures
List of Tables
Affected Technical Specifications
Analytical Methods
Page
1
2
3
4
5
6
CORE Operating Limits
3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open
3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed
3.1.4 Moderator Temperature Coefficient (MTC)
3.1.5 Control Element Assembly (CEA) Alignment
3.1.7 Regulating CEA Insertion Limits
3.1.8 Part Strength CEA Insertion Limits
3.2.1 Linear Heat Rate (LHR)
3.2.3 Azimuthal Power Tilt (Tq)
3.2.4 Departure From Nucleate Boiling Ratio (DNBR)
3.2.5 Axial Shape Index (ASl)
3.3.12 Boron Dilution Alarm System (BDAS)
3.9.1 Boron Concentration
1
1
12
12
12
12
13
13
13
Page 2 of29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
List of Figures
Description
Figure 3.1.1-1
Figure 3.1.2-1
Figure 3.1.4-1
Figure 3.1.5-1
Figure 3.1.7-1
Figure 3.1.7-2
Figure 3.1.8-1
Figure 3.2.3-1
Figure 3.2.4-1
Figure 3.2.4-2
Figure 3.2.4-3
Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open
Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed
MTC Acceptable Operation, Modes 1 and 2
Core Power Limit After CEA Deviation
CEA Insertion Limits Versus Thermal Power (COLSS in Service)
CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)
Part Strength CEA Insertion Limits Versus Thermal Power
Azimuthal Power Tilt Versus Thermal Power (COLSS in Service)
COLSS DNBR Operating Limit Allowance for Both CEACs Inoperable In Any Operable CPC Channel
DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC(s) Operable)
DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, Both CEACs Inoperable In Any Operable CPC Channel)
Page
14
16
17
18
20
21
22
23
Page 3 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
List of Tables
Description
Table 3.3.12-1
Table 3.3.12-2
Table 3.3.12-3
Table 3.3.12-4
Table 3.3.12-5
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff> 0.98
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff > 0.97
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff> 0.96
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff > 0.95
Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff < 0.95
Page
25
Page 4 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 5.6.5 b of the Palo Verde Technical Specifications.
AFFECTED PVNGS TECHNICAL SPECIFICATIONS
3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open
3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed
3.1.4 Moderator Temperature Coefficient (MTC)
3.1.5 Control Element Assembly (CEA) Alignment
3.1.7 Regulating CEA Insertion Limits
3.1.8 Part Strength CEA Insertion Limits
3.2.1 Linear Heat Rate (LHR)
3.2.3 Azimuthal Power Tilt (Tq)
3.2.4 Departure From Nucleate Boiling Ratio (DNBR)
3.2.5 Axial Shape Index (ASI)
3.3.12 Boron Dilution Alarm System (BDAS)
3.9.1 Boron Concentration
Page 5 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
ANALYTICAL METHODS
The COLR contains the complete identification for each of the Technical Specification referenced topical reports (i.e., report number, title, revision, date, and any supplements) and correspondence that provide the NRC-approved analytical methods used to determine the core operating limits, described in the following documents;
T.SRef#"" Title Report No. Rev Date Suppl
CE Method for Control Element Assem- CENPD- N.A. January N.A.1 bly Ejection Analysis
(NOOl-1301-01204)0190-A 1976
The ROCS and DIT Computer Codes for CENPD- N.A. April 1983 N.A.2 Nuclear Design
(NOO1-1900-01412)266-P-A
Safety Evaluation Report related to the NUREG- N.A. March 1983 1Final Design of the Standard Nuclear 0852
September1983'X
Steam Supply Reference SystemsCESSAR System 80, Docket No. STN Z
50-470 December1987 3
Modified Statistical Combination of CEN- 01-P-A May 1988 N.A.4 Uncertainties
(NOOl-1303-01747)356(V)-P-A
System 80™ Inlet Flow Distribution Enclosure N.A. February 1-P4 (NOOl-1301-01228) 1-P to LD-
82-0541993
Calculative Methods for the CE Large CENPD- N.A. March 4-P-A5 Break LOCA Evaluation Model
(NOOl-1900-01192)132 2001 Rev. 1
Calculative Methods for the CE Small CENPD- N.A. April 2-P-A6 Break LOCA Evaluation Model
(NOOl-1900-01185)137-P 1998
Letter: O.D. Parr (NRC) to F. M. Stern N.A. N.A. June 13, N.A.(CE), (NRC Staff Review of the 1975
7 Combustion Engineering ECCS Evaluation Model). NRC approval for: 5.6.5.b.6.
Page 6 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
T.SRef#"" Title Report No. Rev Date Suppl
8
Letter: K. Kniel (NRC) to A. E. Scherer (CE), (Evaluation of Topical Reports CENPD 133, Supplement 3-P and CENPD-137, Supplement 1-P). NRC approval for 5.6.5.b.6.
N.A. N.A. September27,1977
N.A.
9 Fuel Rod Maximum Allowable Pressure (NOO1-0201-00026)
CEN-372-P-A
N.A. May1990
N.A.
10
Letter: A. C. Thadani (NRC) to A. E. Scherer (CE), ("Acceptance forReference CE Topical Report CEN-372- P"). NRC approval for 5.6.5.b.9.
N.A. N.A. April 10,1990
N.A.
11
Arizona Public Service Company PWR Reactor Physics Methodology Using CASMO-4/SIMULATE-3 (NFM-005)
NFM-005 1 August2007
N.A.
12Technical Description Manual for the CENTS Code Volume 1 (CENTS-TD MANUAL-VOL 1)
CE-NPD282-P-AVols. 1
2 March2005
N.A.
12Technical Description Manual for the CENTS Code Volume 2 (CENTS-TD MANUAL-VOL 2)
CE-NPD282-P-AVols. 2
2 March2005
N.A.
12Technical Description Manual for the CENTS Code Volume 3 (CENTS-TD MANUAL-VOL 3)
CE-NPD282-P-AVols. 3
2 March2005
N.A.
13
Implementation of ZIRLO™ Cladding Material in CE Nuclear Power Fuel Assembly Designs (NOOl-1900-01329)
CENPD-404-P-A
0 November2001
N.A.
13
Optimized ZIRLO™(NOOl-0203-00611)
CENPD-404-P-AAddendum1-A
0 July 2006 N.A.
13
Westinghouse Clad Corrosion Model for ZIRLO and Optimized ZIRLO™(NOO 1-0205-00006)
CENPD-404-P-AAddendum2-A
0 October2013
N.A.
Page 7 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
T.SRef#"" Title Report No. Rev Date Suppl
14
HERMITE, A Multi-Dimensional Spaee-Time Kinetics Code for PWR Transients(HERMITE-TOPICAL)
CENPD-188-A
N.A. July1976
N.A.
15
TORC Code, A Computer Code for Determining the Thermal Margin of a Reactor Core (NOOl-1301-01202)
CENPD-161-P-A
N.A. April1986
N.A.
16
CETOP-D Code Structures and Modeling Methods for San Onofre Nuclear Generating Station Units 2 and 3 (NOOl-1301-01185)
CEN-160(S)-P
1-P September1981
N.A.
17
“Safety Evaluation related to Palo Verde Nuclear Generating Station, Unit 2 (PVNGS-2) Issuance of Amendment on Replacement of Steam Generators and Uprated Power Operation, (September29,2003) and“Safety Evaluation related to Palo Verde Nuclear Generating Station, Units 1, 2, and 3 - Issuance of Amendments Re: Replacement of Steam Generators and Uprated Power Operations andAssociated Administrative Changes, (November 16, 2005).”
N.A. N.A. September29,2003
November16, 2005
N.A.
18CPC Methodology Changes for the CPC Improvement Program (NOOl-1303-02283)
CEN-310-P-A
0 April1986
N.A.
19Loss of Flow, C-E Methods for Loss of Flow Analysis (NOOl-1301-01203)
CENPD-183-A
0 June1984
N.A.
20Methodology for Core Designs Containing Erbium Burnable Absorbers (NOOl-0201-00035)
CENPD-382-P-A
0 August1993
N.A.
Page 8 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
T.SRef#^ Title Report No. Rev Date SuddI
21
Verification of the Acceptability of a 1- Pin Bumup Limit of 60 MWD/kgU for Combustion Engineering 16x16 PWR Fuel(NOO1-0201-00042)
CEN-386-P-A
0 August1992
N.A.
22CE 16x16 Next Generation Fuel Core Reference Report (NOOl-0203-00614)
WCAP-16500-P-A
0 August2007
N.A.
22
Application of CE Setpoint Methodology for CE 16x16 Next Generation Fuel (NGF)(NOO1-0205-00063)
WCAP-16500-P-A
1 December2010
1
22
Evolutionary Design Changes to CE16x16 Next Generation Fuel and Method for Addressing the Effects ofEnd-of-Life Properties on Seismic and Loss of Coolant Accident Analysis (NOOl-0205-00048)
WCAP-16500-P-A
1 June 2016 2-P-A
23
VIPRE-01 Modeling and Qualification for Pressurized Water ReactorNon-LOCA Thermal-Hydraulic Safety Analysis(NOO 1-0205-00002)
WCAP-14565-P-A
0 October1999
N.A.
23
Addendum 1 to WCAP-14565-P-A Qualification of ABB Critical Heat Flux Correlations with VlPRE-01 Code (NOOl-0205-00003)
WCAP-14565-P-A,Addendum1-A
0 August2004
N.A.
23
Addendum 2 to WCAP-14565-P-A, Extended Applications of ABB-NV Correlation and Modified ABB-NV Correlation WLOP for PWR Low Pressure Applications (NOO1-0205-00004)
WCAP-14565-P-A,Addendum2-P-A
0 April 2008 N.A.
24ABB Critical Heat Flux Correlations forPWR Fuel(NOO1-0205-00042)
CENPD-387-P-A
0 May 2000 N.A.
Page 9 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
T.SRef#'' Title Report No. Rev Date Suppl
25
Westinghouse Correlations WSSV and WSSV-T for Predicting Critical HeatFlux in Rod Bundles with Side-Supported Mixing Vanes (NOO1-0203-00615)
WCAP-16523-P-A
0 August2007
N.A
26
Implementation of Zirconium Diboride Burnable Absorber Coatings in CE Nuclear Power Fuel Assembly Designs (NOOl-0205-00226)
WCAP-16072-P-A
t
0 August2004
N.A.
a. Corresponds to the reference number specified in Technical Specification 5.6.5
Page 10 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
The cycle-specific operating limits for the specifications listed are presented below.
3.1.1 - Shutdown Margin TSOM) - Reactor Trip Breakers Open
The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1-1.
3.1.2 - Shutdown Margin rSDMl - Reactor Trip Breakers Closed
The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.2-1.
3.1.4 - Moderator Temperature Coefficient ('MTQ
The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.4-1.
3.1.5 - Control Element Assembly ICEAl Alignment
With one or more full-strength or part-strength CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES 1 and 2 core power reduction is specified in Figure 3.1.5-1. The required power reduction is based on the initial power before reducing power.
3.1.7 - Regulating CEA Insertion Limits
With COLSS IN SERVICE, regulating CEA groups shall be limited to thewithdrawal sequence and to the insertion limits' shown in Figure 3.1.7-!^; withCOLSS OUT OF SERVICE, regulating CEA groups shall be limited to the
1 • 0 withdrawal sequence and to the insertion limits shown in Figure 3.1.7-2.Regulating Groups 1 and 2 CEAs shall be maintained > fully withdrawn'’ ^ while in Modes 1 and 2 (except while performing SR 3.1.5.3). When > 20% powerRegulating Group 3 shall be maintained > fully withdrawn.'’ ^
' A reactor power cutback will cause either (Case 1) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with no sequential insertion of additional Regulating Groups (Groups 1,2, 3, and 4) or (Case 2) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with all or part of the remaining Regulating Groups (Groups 1, 2, 3, and 4) being sequentially Inserted. In either case, the Transient Insertion Limit and withdrawal sequence specified in the CORE OPERATING LIMITS REPORT can be exceeded for up to 2 hours.
The Separation between Regulating Groups 4 and 5 may be reduced from the 90 inch value specified in Figures 3.1.7-1 and 3.1.7-2 provided that each of the following conditions are satisfied;
a) Regulating Group 4 position is between 60 and 150 inches withdrawn.
Page 11 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
b) Regulating Group 5 position is maintained at least 10 inches lower than Regulating Group 4 position.
c) Both Regulating Group 4 and Regulating Group 5 positions are maintained above the Transient Insertion Limit specified in Figure 3.1.7-1 (COLSS In Service) or Figure 3.1.7-2 (COLSS Out of Service).
^ Fully withdrawn (FW) is defined as >147.75” (Pulse Counter indication) and >145.25” (RSPT indication). No further CEA withdrawal above FW is required for CEAs’ to meet the Transient Insertion Limit (TIL) requirements.
3.1.8- Part Strength CEA Insertion Limits
The part strength CEA groups shall be limited to the insertion limits shown in Figure 3.1.8-1.
3.2.1 - Linear Heat Rate (LHR)
The linear heat rate limit of 13.1 kW/ft shall be maintained.
3.2.3 - Azimuthal Power Tilt ITg)
The AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 10% with COLSS IN SERVICE when power is greater than 20% and less than or equal to 50%. Additionally, the AZIMUTHAL POWER TILT (Tq) shall be less than or equal to 5% with COLSS IN SERVICE when power is greater than 50%. See Figure 3.2.3-1.
3.2.4 - Departure From Nucleate Boiling Ratio lONBR)
COLSS IN SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - Maintain COLSS calculated core power less than or equal to COLSS calculated core power operation limit based on DNBR decreased by the allowance shown in Figure 3.2.4-1.
COLSS OUT OF SERVICE and CEAC(s) OPERABLE - Operate within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.
COLSS OUT OF SERVICE and Both CEACs INOPERABLE in Any OPERABLE CPC Channel - Operate within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel with both CEACs INOPERABLE.
Page 12 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
3.2.5 - Axial Shape Index (ASP
The core average AXIAL SHAPE INDEX (ASI) shall be maintained within the following limits:
COLSS OPERABLE-0.18 < ASI <0.17 for power > 50%-0.28 < ASI < 0.17 for power >20% and < 50%
COLSS OUT OF SERVICE (CPC)-0.10 < ASI <0.10 for power >20%
3.3.12 - Boron Dilution Alarm System (BDASI
With one or both start-up channel high neutron flux alarms inoperable, the RCS boron concentration shall be determined at the applicable monitoring frequency specified in Tables 3.3.12-1 through 3.3.12-5.
3.9.1 - Boron Concentration
The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration > 3000 ppm.
Page 13 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.1.1-1SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE
REACTOR TRIP BREAKERS OPEN
<j
g001 <
zoQHPX(Zl
(500, 5.0il
RE
AC
OP
GION OF
CEPTABLI
ERATION
(REGION OF
UNACCEPTABLE
OPERATION
i................ j.....................
(350, I.O)
t..................... i................ 1..................100 200 300 400
COLD LEG TEMPERATURE (°F)500 600
Page 14 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.1.2-1SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE
REACTOR TRIP BREAKERS CLOSED
<1
zI—0 oc <z1QzC/3
(500, 6.5)
RE
AC
GION OF
CEPTABL]5
OPERATION
(350, 4.0)
REGION 0UNACCEP^
F
FABLE
OPERATIC>N
............................1
100 200 300 400COLD LEG TEMPERATURE (°F)
500 600
Page 15 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.1.4-1MTC ACCEPTABLE OPERATION, MODES 1 AND 2
(0%,0.5)
(50%, p.O)
MTGAREAGF
ACCEPTABLE
OPERATION
(100%,-4.4
CORE POWER LEVEL (% OF RATED THERMAL POWER)
Maintain Operation within Boundary TECH SPEC 3.1.4 Maximum Upper Limit
Page 16 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.1.5-1CORE POWER REDUCTION AFTER CEA DEVIATION*
'<100% to >80% RTF
<80% to >70% RTF
■<70% to >45% RTF
^5% RTF
TIME AFTER DEVIATION, MINUTES
* WHEN CORE POWER IS REDUCED TO 35% OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED.
* NO POWER REDUCTION IS REQUIRED FOR A SINGLE CEA MISALIGNMENT IF THE FOLLOWING CONDITIONS ARE CONTINUOUSLY MET FROM THE TIME OF DEVIATION:
- > 95 % RATED THERMAL POWER- COLSS IN SERVICE AND CEACS IN SERVICE- AZIMUTHAL POWER TILT IS LESS THAN 3.0 %- ALL CEAS REMAIN ABOVE 142.5" WITHDRAWN BY PULSE COUNTER
AND ABOVE 140.1" WITHDRAWN BY RSPT INDICATION
Page 17 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.1.7-1CEA INSERTION LIMITS VERSUS THERMAL POWER
(COLSS IN SERVICE)
0.9
0.8
«
2<
XHQwH<aU.o§<
0.6
£ 0.3
0.1
0.0
NOTE:See Footnote in Section 3.1.7 for applicability following a Reactor Power Cutback.To meet the Transient Insertion Limit (TIL) all conditions below must be met:
CEA Groups 1 and 2 must be > fully withdrawn* (see definition below) in MODE 1 and MODE 2.
ANDCEA Group 3 must be > fully withdrawn* for
power levels >20%.CEA Group 3 must be withdrawn > 60" for
power >0% and <20%.AND
CEA Group 4 must be > fully withdrawn* for power levels > 70.87%.CEA Group 4 must be withdrawn > the
group 4 TIL (TIL4) as indicated on the graph or by the equation:TIL4 = (172.5" X Fractional Power) + 25.5" (for power > 20% and < 70.87%).
ANDCEA Group 5 must be withdrawn > the
group 5 TIL (TIL5) as indicated on the graph or by the equation:TIL5 = (172.5" X Fractional Power) - 64.5" (for power > 37.39% and < 100%).
GROUP 5-I--- 1----1- -I----1 I-
GROUP 3— I----1----1- I-
GROUP1|------1----1----1
150* 120 90 60 30 0 150* 120 90 60 30 0 150* 120 90 60 30 0GROUP 4 GROUP 2
I----1--- 1------1--1----1 I----1--- 1----1----1--- 1150* 120 90 60 30 0 150* 120 90 60 30 0
CEA POSITION (INCHES WITHDRAWN)
Fully Withdrawn (FW) is defined as > 147.75” (Pulse Counter) and > 145.25” (RSPT).No further CEA withdrawal above FW is required for CEAs’ to meet the TIL requirements.
Page 18 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.1.7-2CEA INSERTION LIMITS VERSUS THERMAL POWER
(COLSS OUT OF SERVICE)
o0.-J<
u
Pw<a:tt.o§&<
0.9
0.8
0.6
0.0
NOTE:See Footnote in Section 3.1.7 for applicability following a Reactor Power Cutback.To meet the Transient Insertion Limit (TIL) all conditions below must be met;
CEA Groups 1 and 2 must be > fully withdrawn* (see definition below) in MODE 1 and MODE 2.
ANDCEA Group 3 must be > fully withdrawn* for
power levels >20%.CEA Group 3 must be withdrawn > 60" for
power >0% and <20%.AND
CEA Group 4 must be > fully withdrawn* for power levels > 54.97%.CEA Group 4 must be withdrawn > the
group 4 TIL (TIL4) as indicated on the graph or by the equation;TIL4 = (250.9" X Fractional Power) + 9.82" (for power > 20% and < 54.97%).
ANDCEA Group 5 must be withdrawn > the
group 5 TIL (TIL5) as indicated on the graph or by the equations:TIL5 = (250.9" X Fractional Power) - 80.18" (for power > 31.96% and < 75.00%).TIL5 = 108" (for power lever > 75.00%).
GROUP 5I- 1- 1- 1-
150* 120 90 60
I—
-IGROUP 3— I 1 1- -I
GROUP 1
-I
30 0 150* 120 90 60 30 0 150* 120 90 60 30 0GROUP4 GROUP 2
|---- 1---- 1----1----1 I----1---- 1-- 1----- 1----1150* 120 90 60 30 0 150* 120 90 60 30 0
CEA POSITION (INCHES WITHDRAWN)
* Fully Withdrawn (FW) is defined as > 147.75” (Pulse Counter) and > 145.25” (RSPT).No further CEA withdrawal above FW is required for CEAs’ to meet the TIL requirements.
Page 19 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.1.8-1PART STRENGTH CEA INSERTION LIMITS
VERSUS THERMAL POWER
z<a:PXH
c/5WXuzc-zop00
o<woXHOzpo:Hc/5H(52<0.
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
....
TRANSIEN[T INSERTION LIVilT (75.0 NCHES).
—........ GPER
UNAC
ATIO?
CEPT.
li......iVBLE
11....... 1
sXGPER
REST]
ATIG?
jaCTEi........
D
Io
' LorsIG TER]M STEA DYST/^TE INSERTIO^ LIMITS (112.5 INCHE,s) :
OPERATIO^}ACC]EPTAE5LE
. . . . 1 i . . . . ............ i . . . .1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2
FRACTION OF RATED THERMAL POWER0.0
Page 20 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.2.3-1AZIMUTHAL POWER TILT VERSUS THERMAL POWER
(COLSS IN SERVICE)20.0
15.0
Oiug 10.0
<
PsN<
0.0 20.0
REGION OF UNACCEPTABLE OPERATION
REGION OF ACCEPTABLE OPERATION
30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0CORE POWER LEVEL
(% OF RATED THERMAL POWER)
Page 21 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.2.4-1COLSS DNBR OPERATING LIMIT
ALLOWANCE FOR BOTH CEACs INOPERABLE IN ANY OPERABLE CPC CHANNEL
(95, 20)
CORE POWER LEVEL (% OF RATED THERMAL POWER)
Page 22 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
FIGURE 3.2.4-2DNBR MARGIN OPERATING LIMIT BASED ON
THE CORE PROTECTION CALCULATORS(COLSS OUT OF SERVICE, CEAC(s) OPERABLE)
ACCEPTABLE OPERATION ANY POWER LEVEL AT LEAST 1 CEAC OPERABLE IN EACH OPERABLE CPC CHANNEL
,;06, 2.38) (0.1,2.38)
(-6.1,2.28)
Z 2.2S ACCEPTABLE OPERATION ! : : :I POWER AT OR ABOVE 90%
AT LEAST I CEAC OPERABLE IN j; ; ; nEACH OPERABLE CPC CHANNELI
(0.05, 2.00)
UNACCEPTABLE(-0.1,1.93) :
OPERATION
CORE AVERAGE ASl
Page 23 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24
FIGURE 3.2.4-3DNBR MARGIN OPERATING LIMIT BASED ON
THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, BOTH CEACs INOPERABLE
IN ANY OPERABLE CPC CHANNEL)
3.5
3.4
PiaZQsI 3-3Z§o(Xo
3.2
3.1
3.0 -0.20
....................... ... ■
ACCEl
ANY P
BOTH
^TABLE
PWERI
CEACs ]
OPERA
.EVEL
INOPER
TION
ABLE
IN ANl
CHANl
f OPER^
Sel
^BLE Cl»C
(0,0, .3.41) (U.l, J.4IJ
(-0.11,3.27)
UNAC
OPERi
CEPTAI
\TION
Ile
............. i-0.15 -0.10 -0.05 0.00 0.05
CORE AVERAGE ASI0.10 0.15 0.20
Page 24 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
Table 3.3.12-1
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K^ff > 0.98
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 0.5 hours ONA ONA
4 not on SCS 12 hours 0.5 hours ONA ONA
5 not on SCS 8 hours 0.5 hours ONA ONA
4 & 5 on SCS ONA ONA ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 25 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
Table 3.3.12-2
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 > > 0.97
OPERATIONALMODE
Number of Operating Charging Pumps
0 I 2 3
3 12 hours I hour 0.5 hours ONA
4 not on SCS 12 hours 1.5 hours 0.5 hours ONA
5 not on SCS 8 hours 1.5 hours 0.5 hours ONA
4 & 5 on SCS 8 hours 0.5 hours ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 26 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
Table 3.3.12-3
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 > K^ff > 0.96
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 2.5 hours 1 hour ONA
4 not on SCS 12 hours 2.5 hours 1 hour 0.5 hours
5 not on SCS 8 hours 2.5 hours 1 hour 0.5 hours
4 & 5 on SCS 8 hours I hour ONA ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 27 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
Table 3.3.12-4
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 > Keff > 0.95
OPERATIONALMODE
Number of Operating Charging Pumps
0 1 2 3
3 12 hours 3 hours 1 hour 0.5 hours
4 not on SCS 12 hours 3.5 hours 1.5 hours 0.75 hours
5 not on SCS 8 hours 3.5 hours 1.5 hours 0.75 hours
4 & 5 on SCS 8 hours 1.5 hours 0.5 hours ONA
Notes: SCS = Shutdown Cooling SystemONA = Operation Not Allowed
Page 28 of 29
PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Revision 24 |
Table 3.3.12-5
REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING
CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K^ff < 0.95
OPERATIONALMODE
Number of Operating Charging Pumps
0 I 2 3
3 12 hours 4 hours 1.5 hours 1 hour
4 not on SCS 12 hours 4.5 hours 2 hours 1 hour
5 not on SCS 8 hours 4.5 hours 2 hours I hour
4 & 5 on SCS 8 hours 2 hours' 0.75 hours ONA
6 24 hours 1.5 hours ONA ONA
Notes; SCS = Shutdown Cooling System ONA = Operation Not Allowed
Page 29 of 29