ML030150159
| ML030150159 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 01/10/2003 |
| From: | Nazar M Nuclear Management Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-PI-03-003 | |
| Download: ML030150159 (27) | |
Text
NMC Committed to Nuclear Excellence>a N
Mano K. Nazar Site Vice President Prairie Island Nuclear Generating Plant Nuclear Management Company, LLC 1717 Wakonade Dr. East
- Welch MN 55089 January 10, 2003 L-PI-03-003 U S Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket No. 50-282 License No. DPR-42 Core Operatingi Limits Report (COLR) for Prairie Island Unit I Cycle 22, Revision 0 The attached COLR revision for Prairie Island Unit 1 Cycle 22 is provided in accordance with the requirements of Technical Specification Section 5.6.5.d. The limits specified in the attached COLR have been established using NRC approved methodologies.
The Unit 1 COLR has been revised for Cycle 22 to incorporate the following changes:
"* Tables 1 and 2 have been updated to incorporate revised bounding V(z) values.
"* Table 3 has been updated to incorporate revised minimum shutdown margin limits.
"* Figures 2a through 2f have been updated to incorporate revised bounding V(z) values.
"* New Figure 2g has been included with additional bounding V(z) values.
"* Text has been deleted or revised to eliminate duplication with the Technical Specifications and Bases.
The Nuclear Management Company has not made new or revised existing Nuclear Regulatory Commission commitments in this letter or the attachment. Please contact Dale Vincent (651-388-1121) if you have any questions related to this report.
Mano K. Nazar Site Vice President Prairie Island Nuclear Generating Plant (Copies and Attachment listed on page 2) 0
USNRC January 10, 2003 Page 2 of 2 c:
Regional Administrator - Region III, NI Senior Resident Inspector, NRC NRR Project Manager, NRC James Bernstein, State of Minnesota
Attachment:
NUCLEAR MANAGEMENT COMPANY Core Operating Limits Report - Unit 1 Cycle 22, Revision 0
PRAIRIE ISLAND NUCLEAR GENERATING PLANT CORE OPERATING LIMITS REPORT UNIT 1 - CYCLE 22 REVISION 0 Note: This report is not part of the Technical Specifications This report is referenced in the Technical Specifications
Core operating Limits Report Unit 1, Cycle 22 Revision 0 PRAIRIE ISLAND NUCLEAR GENERATING PLANT CORE OPERATING LIMITS REPORT UNIT 1 - CYCLE 22 REVISION 0 This report provides the values of the limits for Unit I Cycle 22 as required by Technical Specification Section 5.6.5. These values have been established using NRC approved methodology and are established such that all applicable limits of the plant safety analysis are met.
Heat Flux Hot Channel Factor (FQ(Z)) Limits The Heat Flux Hot Channel Factor, F, (Z), shall be limited by the relationships in Technical Bases 3.2.1.
Where:
CFQ = 2.40, K(z) values are provided in Figure 1.
F ' (Z) = F " (Z)*(1.0815)
Where:
F " (Z) is the measured value from the incore flux map F '(Z) = F'(Z)
- V(Z)
Where:
V(Z) values are provided in Figures 2a through 2g and Table 1 and Table 2.
For SR 3.2.1.2 the appropriate factor to meet the FQ(Z) limit, F', is applied to the F ' (Z) when the measured FQ increases, specified in Table 4.
Reference Technical Specification section: 3.2.1 Nuclear Enthalpy Rise Hot Channel Factor (FArmN) Limits FAHlN
- 1.04< FAHRTP * [1 + PFDH * (1 - P)]
Where:
FAHRn
= 1.77 PFDH = 0.3 P = Thermal Power / RTP Reference Technical Specification section: 3.2.2 Page 1 of 24
Core operating Limits Report Unit 1, Cycle 22 Revision 0 Isothermal Temperature Coefficient (ITC)
ITC Upper limit:
- a. < 5 pcm/°F for power levels
- 70% RTP; and
- a. -32.7 pcm/°F Reference Technical Specification section: 3.1.3.
RCS Pressure, Temperature, and Flow - Departure from Nucleate Boiling (DNB) Limits Pressurizer pressure limit = 2205 psig RCS average temperature limit = 564°F RCS total flow rate limit = 178,000 gpm Reference Technical Specification section: 3.4.1.
Axial Flux Difference Limits The axial flux difference limits are provided in Figure 3.
The axial flux difference target band is +/-5% when using figures 2a through 2f and Table
- 1. The axial flux difference target band is +5% when equal to or above 90% power and +
10% below 90% power when using figure 2g and Table 2.
Reference Technical Specification sections: 3.2.3.
Shutdown Rod Insertion Limits The shutdown rods shall be fully withdrawn.
Reference Technical Specification section: 3.1.5.
Control Rod Insertion Limits The control rod banks shall be limited in physical insertion as shown in Figures 4, 5, and
- 6.
The control rod banks withdrawal sequence shall be Bank A, Bank B, Bank C, and finally Bank D.
- The control rod banks shall be withdrawn in 100 step overlap.
Reference Technical Specification sections: 3.1.6.
Shutdown Margin Requirements Minimum Shutdown Margin requirements are shown in Table 3.
Reference Technical Specification sections: 3.1.1 and 3.1.8.
Page 2 of 24
Core operating Limits Report Unit 1, Cycle 22 Revision 0 Refueling Boron Concentrations The boron concentration of the reactor coolant system and the refueling cavity shall be sufficient to ensure that the more restrictive of the following conditions is met:
a) Kfr
- 0.95 b) 2000 ppm c) The Shutdown Margin specified in Table 3 Reference Technical Specification sections: 3.9.1.
Penalty on FQ for Small Break LOCA - K(z)
The small and large break LOCA analyses performed for this cycle are valid for FQ -- 2.80 and FQ
< 2.40, respectively. The FQ limit for the large break LOCA analysis is more limiting than the FQ limit for the small break LOCA analysis. The small break LOCA analysis incorporates the K(z) methodology. However, since the small break LOCA is less limiting than the large break LOCA, no K(z) penalty needs to be applied to calculations of most limiting FQ values. Thus for the equation in Technical Specification Bases B3.2.1, K(z) is equal to 1. K(z) is shown graphically in Figure 1.
Transient Power Distribution Penalty for Fn - V(z)
Table 1 summarizes the bounding V(z) values for the middle 80% of the core for Prairie Island unit 1, cycle 22 with an operating band of+ 5% Al. The V(z) penalty takes the form of straight lines connecting data points determined as a function of core height. A particular V(z) curve is valid over a given exposure range and equilibrium axial offset range as noted in Table 1. The V(z) penalty for each exposure and axial offset range is shown graphically in Figures 2a - 2f.
An alternate two tier V(z) curve is presented in Table 2 and figure 2g. The operating band is
+5% Al at or above 90% power, and + 10% AI below 90% power. This figure is valid over all exposure ranges.
Page 3 of 24
Core Operating Limits Report Unit 1, Cycle 22 Revision 0 Table 1 Bounding V(z) Values Exposure Range z(ft)
V(z) z(ft)
V(z) 0.0 - 4.000 GWd/MTU 0.20 1.000 6.30 1.059 Eq AO range: -3% to +8%
0.39 1.000 6.49 1.055 Operating band: +/-5% Al 0.59 1.000 6.69 1.052 (Startup) 0.79 1.000 6.89 1.049 0.98 1.000 7.08 1.047 1.18 1.107 7.28 1.046 1.38 1.102 7.48 1.049 1.57 1.098 7.67 1.052 1.77 1.093 7.87 1.054 1.97 1.087 8.07 1.056 2.16 1.082 8.26 1.058 2.36 1.076 8.46 1.059 2.56 1.071 8.66 1.060 2.75 1.066 8.85 1.061 2.95 1.064 9.05 1.063 3.15 1.063 9.25 1.064 3.34 1.062 9.44 1.068 3.54 1.063 9.64 1.071 3.74 1.063 9.84 1.074 3.93 1.063 10.03 1.077 4.13 1.063 10.23 1.080 4.33 1.064 10.43 1.083 4.52 1.065 10.62 1.087 4.72 1.067 10.82 1.091 4.92 1.066 11.02 1.000 5.11 1.066 11.21 1.000 5.31 1.065 11.41 1.000 5.51 1.064 11.61 1.000 5.70 1.064 11.80 1.000 5.90 1.062 12.00 1.000 6.10 1.061 Page 4 of 24
Core Operating Limits Report Unit 1, Cycle 22 Revision 0 Table I Bounding V(z) Values Exposure Range z(ft)
V(z) z(ft)
V(z) 4.000 - 7.000 GWd/MTU 0.20 1.000 6.30 1.062 Eq AO range: -4% to +6%
0.39 1.000 6.49 1.058 Operating band: +/-5% Al 0.59 1.000 6.69 1.053 0.79 1.000 6.89 1.051 0.98 1.000 7.08 1.050 1.18 1.101 7.28 1.050 1.38 1.097 7.48 1.053 1.57 1.094 7.67 1.056 1.77 1.089 7.87 1.058 1.97 1.084 8.07 1.060 2.16 1.079 8.26 1.061 2.36 1.074 8.46 1.062 2.56 1.069 8.66 1.063 2.75 1.065 8.85 1.064 2.95 1.064 9.05 1.066 3.15 1.062 9.25 1.067 3.34 1.062 9.44 1.070 3.54 1.063 9.64 1.073 3.74 1.064 9.84 1.077 3.93 1.064 10.03 1.080 4.13 1.064 10.23 1.083 4.33 1.065 10.43 1.086 4.52 1.067 10.62 1.090 4.72 1.069 10.82 1.093 4.92 1.069 11.02 1.000 5.11 1.069 11.21 1.000 5.31 1.068 11.41 1.000 5.51 1.068 11.61 1.000 5.70 1.067 11.80 1.000 5.90 1.065 12.00 1.000 6.10 1.064 Page 5 of 24
Core Operating Limits Report Unit 1, Cycle 22 Revision 0 Table 1 Bounding V(z) Values Exposure Range z(ft)
V(z) z(ft)
V(z) 7.000 - 10.000 GWd/MTU 0.20 1.000 6.30 1.065 Eq AO range: -6% to +4%
0.39 1.000 6.49 1.060 Operating band: +/-5% AI 0.59 1.000 6.69 1.056 0.79 1.000 6.89 1.053 0.98 1.000 7.08 1.052 1.18 1.100 7.28 1.051 1.38 1.095 7.48 1.054 1.57 1.090 7.67 1.056 1.77 1.085 7.87 1.058 1.97 1.080 8.07 1.059 2.16 1.074 8.26 1.060 2.36 1.071 8.46 1.062 2.56 1.068 8.66 1.064 2.75 1.066 8.85 1.066 2.95 1.064 9.05 1.068 3.15 1.063 9.25 1.069 3.34 1.062 9.44 1.072 3.54 1.064 9.64 1.074 3.74 1.065 9.84 1.077 3.93 1.065 10.03 1.080 4.13 1.066 10.23 1.084 4.33 1.067 10.43 1.086 4.52 1.069 10.62 1.088 4.72 1.072 10.82 1.091 4.92 1.072 11.02 1.000 5.11 1.072 11.21 1.000 5.31 1.072 11.41 1.000 5.51 1.071 11.61 1.000 5.70 1.071 11.80 1.000 5.90 1.069 12.00 1.000 6.10 1.067 Page 6 of 24
Core Operating Limits Report Unit 1, Cycre 22 Revision 0 Table 1 Bounding V(z) Values Exposure Range z(ft)
V(z) z(ft)
V(z) 10.000 - 15.000 GWd/MTU 0.20 1.000 6.30 1.073 Eq AO range: -6% to +2%
0.39 1.000 6.49 1.078 Operating band: +/-5% Al 0.59 1.000 6.69 1.083 0.79 1.000 6.89 1.085 0.98 1.000 7.08 1.086 1.18 1.093 7.28 1.086 1.38 1.091 7.48 1.086 1.57 1.088 7.67 1.086 1,77 1.086 7.87 1.084 1.97 1.085 8.07 1.082 2.16 1.084 8.26 1.080 2.36 1.082 8.46 1.078 2.56 1.079 8.66 1.075 2.75 1.076 8.85 1.075 2.95 1.072 9.05 1.078 3.15 1.068 9.25 1.080 3.34 1.064 9.44 1.081 3.54 1.061 9.64 1.082 3.74 1.058 9.84 1.083 3.93 1.057 10.03 1.084 4.13 1.057 10.23 1.084 4.33 1.058 10.43 1.088 4.52 1.061 10.62 1.091 4.72 1.065 10.82 1.095 4.92 1.067 11.02 1.000 5.11 1.069 11.21 1.000 5.31 1.070 11.41 1.000 5.51 1.071 11.61 1.000 5.70 1.072 11.80 1.000 5.90 1.072 12.00 1.000 6.10 1.072 Page 7 of 24
Core Operating Limits Report Unit 1, Cycle 22 Revision 0 Table 1 Bounding V(z) Values Exposure Range z(ft)
V(z) z(ft)
V(z) 15.000 - 18.000 GWd/MTU 0.20 1.000 6.30 1.104 Eq AO range: -6% to +4%
0.39 1.000 6.49 1.107 Operating band: +/-5% AI 0.59 1.000 6.69 1.110 0.79 1.000 6.89 1.110 0.98 1.000 7.08 1.109 1.18 1.121 7.28 1.108 1.38 1.120 7.48 1.105 1.57 1.119 7.67 1.102 1.77 1.118 7.87 1.099 1.97 1.114 8.07 1.095 2.16 1.110 8.26 1.092 2.36 1.105 8.46 1.087 2.56 1.099 8.66 1.082 2.75 1.094 8.85 1.080 2.95 1.087 9.05 1.081 3.15 1.081 9.25 1.082 3.34 1.077 9.44 1.085 3.54 1.075 9.64 1.088 3.74 1.074 9.84 1.092 3.93 1.074 10.03 1.096 4.13 1.074 10.23 1.101 4.33 1.077 10.43 1.102 4.52 1.082 10.62 1.103 4.72 1.088 10.82 1.105 4.92 1.090 11.02 1.000 5.11 1.092 11.21 1.000 5.31 1.092 11.41 1.000 5.51 1.090 11.61 1.000 5.70 1.089 11.80 1.000 5.90 1.093 12.00 1.000 6.10 1.099 Page 8 of 24
Core Operating Limits Report Unit 1, Cycle 22 Revision 0 Table 1 Bounding V(z) Values Exposure Range z(ft)
V(z) z(ft)
V(z) 18.000 - EOC GWd/MTU 0.20 1.000 6.30 1.122 Eq AO range: -6% to +4%
0.39 1.000 6.49 1.123 Operating band: +/-5% Al 0.59 1.000 6.69 1.124 0.79 1.000 6.89 1.123 0.98 1.000 7.08 1.122 1.18 1.158 7.28 1.119 1.38 1.156 7.48 1.115 1.57 1.153 7.67 1.110 1.77 1.151 7.87 1.105 1.97 1.145 8.07 1.100 2.16 1.141 8.26 1.095 2.36 1.134 8.46 1.089 2.56 1.127 8.66 1.083 2.75 1.120 8.85 1.081 2.95 1.112 9.05 1.084 3.15 1.103 9.25 1.087 3.34 1.096 9.44 1.090 3.54 1.088 9.64 1.093 3.74 1.080 9.84 1.097 3.93 1.078 10.03 1.101 4.13 1.076 10.23 1.105 4.33 1.077 10.43 1.105 4.52 1.082 10.62 1.105 4.72 1.088 10.82 1.107 4.92 1.090 11.02 1.000 5.11 1.092 11.21 1.000 5.31 1.094 11.41 1.000 5.51 1.099 11.61 1.000 5.70 1.104 11.80 1.000 5.90 1.110 12.00 1.000 6.10 1.117 Page 9 of 24
Core Operating Limits Report Unit 1, Cycle 22 Revision 0 Table 2 Bounding V(z) Values Exposure Range z(ft)
V(z) z(ft)
V(z)
BOC to EOC 0.20 1.000 6.30 1.243 Eq AO range: -6% to +4%
0.39 1.000 6.49 1.242 Operating Band 0.59 1.000 6.69 1.241
+/-5% Al at and above 90% power 0.79 1.000 6.89 1.238
+/-10% Al below 90% power 0.98 1.000 7.08 1.234 1.18 1.279 7.28 1.228 1.38 1.274 7.48 1.215 1.57 1.268 7.67 1.202 1.77 1.262 7.87 1.188 1.97 1.253 8.07 1.172 2.16 1.244 8.26 1.157 2.36 1.236 8.46 1.137 2.56 1.230 8.66 1.117 2.75 1.223 8.85 1.104 2.95 1.215 9.05 1.096 3.15 1.207 9.25 1.087 3.34 1.198 9.44 1.090 3.54 1.188 9.64 1.094 3.74 1.177 9.84 1.098 3.93 1.166 10.03 1.102 4.13 1.153 10.23 1.107 4.33 1.146 10.43 1.107 4.52 1.145 10.62 1.107 4.72 1.145 10.82 1.109 4.92 1.158 11.02 1.000 5.11 1.172 11.21 1.000 5.31 1.187 11.41 1.000 5.51 1.202 11.61 1.000 5.70 1.216 11.80 1.000 5.90 1.226 12.00 1.000 6.10 1.236 Page 10 of 24
Core operating Limits Report Unit 1, Cycle 22 Revision 0 Table 3 Minimum Required Shutdown Margin Plant Conditions Number of Charging Pumps Running**
0-1 Pump 2 Pumps 3 Pumps Mode 1*
2.0%
2.0%
2.0%
Mode 2*
2.0%
2.0%
2.0%
Mode 3, Tave > 520°F 2.0%
2.0%
2.0%
Mode 3, 3500F -< Tave < 520°F 2.0%
2.0%
2.5%
Mode 4 2.0%
4.5%
7.0%
Mode 5***
2.5%
4.5%
7.0%
Mode 6, ARI***
5.26%
5.26%
7.0%
Mode 6, ARO***
5.26%
5.5%
9.0%
Physics Testing in Mode 2 0.5%
0.5%
0.5%
Operational Mode Definitions, as per TS Table 1.1-1.
For Modes 1 and 2, minimum shutdown margin requirements are provided by the Rod Insertion Limits.
Charging pump(s) in service only pertains to steady state operations. It does not include transitory operations. For example, operations such as starting a second charging pump in order to secure the operating pump would fall under the one pump in service column.
These values are also applicable for the Unit 1 Cycle 21 end of cycle.
Table 4 FQ Factor Exposure Ranqe FoA Factor BOC - EOC 1.027 Page 11 of 24 I I
Core Operating Limits Report Unit 1, Cycle 22 Revision 0 6
Core Height (ft) 8 10 12 Figure 1: Hot Channel Factor Normalized Operating Envelope Page 12 of 24 1.2 1.1 1.0 0.9 0.8 0.7 K(z) 0.6 05 0.4 0.3 0.2 0.1 0.0 I -----------.----------.
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Core Operating Limits Report Unit 1, Cycle 22 Revision 0 0
1 2
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9 10 11 Core Height (ft)
Figure 2a: Bounding V(z) Values From 0 - 4.000 GWd/MTU (Startup) 12 Page 13 of 24 1.11 1.10 1.09 1.08 V(z) 1.07 1.06 1.05 1.04-
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Figure 2c: Bounding V(z) Values From 7.000 - 10.000 GWd/MTU Page 15 of 24 1.11 1.10 1.09 1.08 V(z) 1.07 1.06 1.05 1.04 7.000 - 10.000 GWd/MTU
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10 11 12 Figure 2d: Bounding V(z) Values From 10.000 - 15.000 GWd/MTU Page 16 of 24
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Figure 2e: Bounding V(z) Values From 15.000 - 18.000 GWdIMTU Page 17 of 24 1.13 1.12 1.11 1.10 V(z) 1.09 1.08 1.07 1.06 1.05 Ii I...
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Core Operating Limits Report Unit 1, Cycle 22 Revision 0 18.000 - EOC GWd/MTU Eq AO range: -6% to +4%
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Figure 2g: Bounding V(z) Values 2 Tier band BOC - EOC Page 19 of 24
Core Operating Limits Report Unit 1, Cycle 22 Revision 0
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 Deviation From Target Flux Difference Figure 3: Deviation From Target Flux Difference as a Function of Thermal Power Page 20 of 24 120 110 100 90 80 70 60 50 40 30 20 10 0
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Prepared by:
Reviewed By:
Reviewed By:
Reviewed By:
Reviewed By:
Approved By:
C'iuken Nuclear Analysis and Design Nuclear Analysis and Design Superintendent r Engineering Prairie Island Eugene Eckholt Regulatory Affairs Manager Prairie Island Scott Northard Director of Engineering Prairie Island Mano Nazar
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Site Vice President Prairie Island Core operating Limits Report Unit 1, Cycle 22 Revision 0
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