ML20100G716
| ML20100G716 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 02/07/1996 |
| From: | Breene T, Horneck D, Nelson O NORTHERN STATES POWER CO. |
| To: | |
| Shared Package | |
| ML20100G711 | List: |
| References | |
| NUDOCS 9602260059 | |
| Download: ML20100G716 (18) | |
Text
_ _ _ _
PRAIRIE ISLAND NUCLEAR GENERATING PLANT CORE OPERATING LIMITS REPORT Unit 1 - Cycle 18 Revision 0 4
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e Note: This report is not part of the Technical Specifications.
This report is referenced in Technical Specifications.
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9602260059 960207 ADOCK0500g2 DR l
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i PRAIRIE ISLAND NUCLEAR GENERATING PLANT 4
4 CORE OPERATING LIMITS REPORT Unit 1 - Cycle 18 Revision 0 i
This report provides the values of the limits for Unit 1 Cycle 18 as required by 4
Technical Specification Section 6.7.A.6. These values have been established using i
NRC approved methodology and are established such that all applicable limits of the plant safety analysis are met.
i Heat Flux Hot Channel Factor Limits Fo"" = 2.40 K(Z) values are provided in Figure 1.
V(Z) values are provided in Figures 2a through 2f.
Reference Technical Specification Sections: 3.10.8.1 and 3.10.B.2 i
j Nuclear Enthalov Rise Hot Channel Factor Limits Fan "" = 1.77 PFDH = 0.3 l
If the nuclear enthalpy rise hot channel factor exceeds its limit in Technical Specification 3.10.8.1, reduce reactor power and the high neutron flux trip setpoint by 3.33% for each percent that the measured nuclear enthalpy rise hot channel factor exceeds the 3.10.B.1 limit.
Reference Technical Specification Sections: 3.10.8.1,3.10.B.2, and 3.10.B.3 Page 1 of 17
Coro opere. ting Limits R:: port Unit 1, cycle 18 Revision O Linear Heat Generation Rate The 95% probability level ECCS analysis calculation utilized a peak linear heat generation rate of 14.788 kw#t.
The Appendix K ECCS analysis calculation utilized a peak linear heat generation rate of 15.167 kw#t for the Fo limit of 2.40.
Reference Technical Specification Section: 3.10.B Axial Flux Difference Limits
' The Axial Flux difference limits are provided in Figure 3.
The Axial Flux Difference target band is iS%.
Reference Technical Specification Sections: 3.10.B.4 through 3.10.B.9 Shutdown Rod Insertion Limits The shutdown rods shall be fully withdrawn.
Reference Technical Specification Sections 3.10.D Control Rod Insertion Limits 1
The control rod banks shall be limited in physical insertion as shown in Figures 4, 5, and 6.
Reference Technical Specification Sections: 3.10.D and 3.10.G Reactor Coolant Flow Limit The reactor coolant system flow chall be ;t 178,000 gpm.
Reference Technical Specification Sections: 3.10.J Page 2 of 17
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Core opercting Limito R: port Unit 1, Cycle 18 Revision O Penalty on Fa for Small Break LOCA - K(z)
The Small and Large Break LOCA analyses performed for this cycle are valid for Fo s 2.80 and Fo s 2.40, respectively. The Fo limit for the Large Break LOCA analysis l
ls more limiting than the Fo limit for the Small Break LOCA analysis. The Small Break i
LOCA analysis incorporates the K(z) methodology. However, since the Small Break l
LOCA is less limiting than the Large Break LOCA analysis, no K(z) penalty needs to be J
applied to calculations of most limiting Fo values. Thus for the equation in Technical l
Specification 3.10.8, K(z) is equal to 1. K(z) is shown graphically in Figure 1.
1 Transient Power Distribution Penalty for Fa - V(z)
Table i summarizes the bounding V(z) values for the middle 80% of the core for Prairie Island Unit 1 Cycle 18. 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
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over a given exposure range and equilibrium Axail Offset (AO) range as noted in Table
- 1. The V(z) penalty for each exposure and AO range is shown graphically in Figures 2a - 2f.
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1 4
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coro opercting Limito R port Unit 1, cycle 18 Revision 0 Table 1 Bounding V(z) Values Exposure Range z (ft), V(z) 0 - 1.5 GWd/MtU 0.25, 1.120 Eq AO range: -3% to +5%
1.25, 1.106 Operating Band:
5% AI 2.75, 1.085 d
3.75, 1.081 5.75, 1.084 7.75, 1.060 j
8.75, 1.072 10.25, 1.090 11.75, 1.092 4
0 - 4 GWd/MtU 0.25, 1.120 Eq AO range: -6% to +4%
1.25, 1.106 Operating Band: iS% AI 2.75, 1.087 1
3.75, 1.081 5.75, 1.086 7.75, 1.076 8.75, 1.090 10.25, 1.103 i
11.75, 1.109 0 - 8 GWd/MTU 0.25, 1.120 Eq AO range: 6% to +3%
1.25, 1.106 Operating Band:
5% AI 2.75, 1.090 3.75, 1.081 5.75, 1.086 7.75, 1.085 8.75, 1.094 10.25, 1.105 11.75, 1.109 Page 4 of 17
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Coro Operating Limits R': port Unit 3, Cycle 18 Revision 0 Table 1 Bounding V(z) Values (continued)
Exposure Range z (ft), V(z) 0 - 13 GWd/MTU 0.25, 1.120 Eq AO range: -6% to +2%
1.25, 1.109 Operating Band: iS% AI 2.75, 1.090 3.75, 1.081 5.75, 1.086 7.75, 1.091 8.75, 1.097 10.25, 1.105 11.75, 1.109 0 - 16.5 GWd/MtU 0.25, 1.122 Eq AO range: -4% to +4%
1.25, 1.120 Operating Band: iS% AI 2.75, 1.094 3.75, 1.093 4
5.75, 1.110 7.75, 1.102 8.75, 1.097 10.25, 1.106 11.75, 1.115 0 - EOC GWd/MtU 0.25, 1.127 Eq AO range: -4% to +4%
1.25, 1.126 Operating Band:
5% AI 2.75, 1.094 3.75, 1.100 5.75, 1.114 7.75, 1.113 8.75, 1.097 10.25, 1.109 11.75, 1.115 I
Page 5 of 17
Caro opercting Limitc R port Unit 1, Cycle 18 Revision 0 1.2 1.1 1.0 0.9 0.8 0.7 K(z)0.6 0.5 0.4 0.3 -
0.2 0.1 t
O.0 0
2 4
6 8
10 12 Core Height (ft)
Figure 1 HOT CHANNEL FACTOR NORMALIZED OPERATING ENVELOPE Page 6 of 17
l Caro opercting Limito R port Unit 1, Cycle 18 Revision 0 i
i 1
1,14 0- 1.5 GWdMTU "3 '
Eq AO range: -3% to +5%
4 Operating Band: *5%
1.12-g 1
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1 1.05 0
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3 4
5 6
7 8
9 10 11 12 core He@t (n)
Figure 2a BoundingV(Z)Value From 0- 1.5 GWd/MIU Page 7 of 17
Cors Operating Limito R: port Unit 1, cycle 18 Revision O i
1.14 0- 4 GWd/MTU 1.13 Eq AO range: -6% to +4%
Operating Band: :tS%
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10 11 12 Core HeigN (ft)
Figure 2b BoundingV(Z) Values From0-4 GWdMIU i
Page 8 of 17 i
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C:ro Operating Limito R port Unit 1, Cycle 18 Revision 0 i
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1.14 1
0- 8 GWd/MTU 1.13 Eq AO range: -6%to +3%
Operating Band: *5%
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5 6
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9 10 11 12 Core Hei@ (ft)
Figure 2c BoundingV(Z) Values Fmm0- 8 GWdMIU Page 9 of 17
Coro Operr. ting Limito Report Unit 1, Cycle 18 Revision 0 i
l 1.14 0 - 13 GWd/MTU F
1.13 ~
Eq AO range: -6% to +2%
Operating Band *5%
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9 10 11 12 Core HeigN (ft) l Figure 2d BoundingV(Z) Values From0- 13 GWd/MIU 1
Page 10 of 17
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caro Opercting Li:2its R port Unit 1, cycle 18 Revision 0 4
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1,14 O-16.5 GWd/MTU Eq AO range: -4% to +4%
1 13-Operating Band: *5%
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1.08 0
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5 6
7 8
9 10 11 12 core Heipt (ft)
Figure 2e BoundingV(Z) Values From0- 16.5 GWdMIU 4
Page 11 of 17
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j Coro Operating Limito R: port Unit 1, Cycle 18 Revision 0 i
4 1.14 I
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0G M TTU-EOC 113 Eq AO range: -4% to +4%
Operating Band: *5%
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1.06 0
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Figure 2f BoundingV(Z) Values FromBOC-EOC Page 12 of 17
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Coro Opercting Limite R port Unit 1, Cycle 18 Revision 0 I
120 110 too i
Unacceptable Unacceptable Operation
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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 13 of 17
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Coro Opercting Limito R port Unit 1, cycle 18 Revision 0 1
0.00 1
a
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BANK B 1
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0 0.2 0.4 0.6 0.8 1
CORE POWER FRACTION Figure 4 CONIROL BANK INSERTION LIMIT Page 14 of 17
Coro Opercting Limito R: port Unit 1, Cycle 18 Revision 0 i
1 1
0.0
_._] BANK B 0.2
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$ 0.6
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1.0 O.0 0.2 0.4 0.6
- 0. 8 1.0 CORE POWER FRACTION 1
Figure 5 INSERTION LIMITS 100 STEP OVERLAP WITH ONE BOTTOMED ROD (Technical Specification 3.10.G.3)
Page 15 of 17
Core Operating Limits Report Unit 1, Cycle 18 Revision 0 1
0.0
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1.0 O.0 0.2 0.4 0.6 0.8 1.0 CORE POWER FRACTION Figure 6 INSERTION LIMITS -
100 STEP OVERLAP WITH ONE INOPERABLE ROD (Technical Specification 3.10.G.4)
Page 16 of 17
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Core Operating Limits Report Unit 1, Cycle 18 Revision 0
/d4M5 Prepared By:
/
/ hvid GAorneck Date O
Engineer Fuel Resources Reviewed By:
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Ofey Nelson Date PWR Process Manager Fuel Resources l
Reviewed By:
/M 8-
[
Thomas Breene Date Superintendent of Nuclear Engineering l
Prairie Island Reviewed By: L b,f. OM
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Eugene %ckholt
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Date Senior Engineer Licensing and Management Issues Approved By:
- 9f/
((
A s-%~~
9/7/fM F(ogeiO. Anderson
' D6te Director Licensing and Management issues Page 17 of 17