ML060390109
| ML060390109 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 02/05/2006 |
| From: | Plant Licensing Branch III-2 |
| To: | |
| chawla M, NRR/DORL, 415-8371 | |
| Shared Package | |
| ML060250224 | List: |
| References | |
| TAC MC5811, TAC MC5812 | |
| Download: ML060390109 (18) | |
Text
Spent Fuel Pool Storage 3.7.17 3.7 PLANT SYSTEMS 3.7.17 Spent Fuel Pool Storage LCO 3.7.17 The combination of initial enrichment, burnup and decay time of each fuel assembly stored in the spent fuel pool shall be within the Unrestricted Region of Figure 3.7.17-1 or in accordance with Specification 4.3.1.1.
APPLICABILflY:
Whenever any fuel assembly is stored in the spent fuel storage pool.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Requirements of the LCO A. 1 ------------- NOTE-------------
not met.
LCO 3.0.3 is not applicable.
Initiate action to move the Immediately noncomplying fuel assembly to an acceptable location.
Prairie Island Units I and 2 Unit 1 - Amendment No. 4-58, 172 Unit 2 - Amendment No. 449, 1621 3.7.17-1
Spent Fuel Pool Storage 3.7.17 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.17.1 Verify by administrative means the initial Prior to storing enrichment, burnup and decay time of the fuel or moving the assembly is in accordance with Figure 3.7.17-1 or fuel assembly Specification 4.3. 1.1.
SR 3.7.17.2 Verify spent fuel pool inventory.
Within 7 days after completion of a spent fuel pool fuel handling campaign I
Prairie Island Units 1 and 2 Unit I - Amendment No. 158, 172 Unit 2 - Amendment No. I4, 162 3.7.17-2
Spent Fuel Pool Storage 3.7.17 35000 30000 25000 E 20000 15000 10000 5000
-o years
-5 years
-10 year
-15 year!
-20 year.
t 1 <r;
~ ---4--K I------.-.-
I..l..j 1
l RESTRICTED 7TF M
i 1*
0 1
2 3
4 InMtial Enrichment (% U235) 5 Figure 3.7.17-1 Spent Fuel Pool Unrestricted Region Burnup and Decay Time Requirements Prairie Island Units 1 and 2 Unit I - Amendment No. 4148 172 Unit 2 - Amendment No. 149, 162 3.7.17-3
Design Features 4.0 4.0 DESIGN FEATURES (continued) 4.3 Fuel Storage 4.3.1 Criticality 4.3.1.1 The spent fuel storage racks are designed and shall be maintained with:
- a.
Fuel assemblies having a maximum U-235 enrichment of 5.0 weight percent;
- b.
k4fr < 1.0 iif fully flooded with unborated water, which includes an allowance for uncertainties as described in Reference 1; C.
kefr< 0.95 if fully flooded with water borated to 730 ppm, which includes an allowance for uncertainties as described in Reference 1;
- d.
A nominal 9.5 inch center to center distance between fuel assemblies placed in the fuel storage racks;
- e.
New or spent fuel assemblies with a combination of discharge burnup, initial enrichment and decay time in the "unrestricted range" of Figure 3.7.17-1 may be allowed unrestricted storage in the fuel storage racks; and
- f.
New or spent fuel assemblies with a combination of discharge burnup, initial enrichment and decay time in the "restricted range" of Figure 3.7.17-1 will be stored in compliance with Figures 4.3.1-1 through 4.3.1-4.
Prairie Island Unit I - Amendment No.
4 72 Units land 2 4.0-2 Unit 2-AmendmentNo. 49, 162
Design Features 4.0 4.0 DESIGN FEATURES 4.3 Fuel Storage (continued) 4.3.3 Capacity The spent ftuel storage pool is designed and shall be maintained with a storage capacity limited to no more than 1386 fuel assemblies not including those assemblies which can be returned to the reactor. The southeast corner of the small pool serves as the spent fuel cask lay down area. To facilitate plant evolutions, four additional storage racks, with a combined capacity of 196, may be temporarily installed in the cask lay down area to provide a total of 1582 storage locations (Ref. 3).
REFERENCES
- 1.
"Prairie Island Units 1 & 2 Spent Fuel Pool Criticality Analysis",
Calculation Note Number CN-WFE-03-40, Westinghouse Electric Company, November 11, 2004.
- 2.
"Criticality Analysis of the Prairie Island Units 1 & 2 Fresh and Spent Fuel Racks", Westinghouse Commercial Nuclear Fuel Division, February 1993.
- 3.
USAR, Section 10.2.
Prairie Island Units 1 and 2 Unit 1 - Amendment No. 148, 172 Unit 2 - Amendment No. 449, 162 4.0-4
Design Features 4.0 I
IX E
Fresh Fuel:
[I Burned Fuel:
Must be less than or equal to Nominal 4.95 w/o 235U No restrictions on burnup Assemblies with GAD shall have a minimum of 4 fuel rods with a minimum concentration of 4.0 w/o Gd2O3.
Must satisfy minimum burnup requirements of Figures 4.3.1-3 or 4.3.1-4 depending on presence of GAD rods in fresh fuel Figure 4.3.1-1 Spent Fuel Pool Burned/Fresh Checkerboard Cell Layout Prairie Island Units 1 and 2 Unit 1 - Amendment No. 4-58, 1721 Unit 2 - Amendment No. 449, 1621 4.0-5
Design Features 4.0 Interface I
Fresh Fuel:
Burned Fuel:
Burned Fuel:
Must be less than or equal to nominal 4.95 w/o 235U No restrictions on burnup 3x3 Checkerboard Region Must satisfy minimum burnup requirements of Figure 4.3.1-3 or 4.3.1-4 All Cell Unrestricted Region Must satisfy minimum burnup requirements of Figure 3.7.17-1 I
I Figure 4.3.1-2 Spent Fuel Pool Checkerboard Interface Requirements Prairie Island Units 1 and 2 Unit 1 - Amendment No. 45, 172l Unit 2 - Amendment No. 4141, 16 4.0-6
Design Features 4.0 J-Oyears
..7iI7-----'-
1-
-F-I-A-50000
.t--
J-
- -Z
-Oyears i-4
-5 years 45000 A
.1 j
lyears
-4
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years 450I-
-2 years I-4------
L-..--
40000 35000 0 30000 I.-
rL 25000 m
20000 15000 10000 5000 0.
1
,g I
'---------A._._.!.
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L t
1 NOTACCEP-TAB--LEX---:
- :-- i=
I-F
-jfI t
i 2
3 4
5 Initial Enrli.hment (% U235)
Figure 4.3.1-3 Spent Fuel Pool Checkerboard Region Burnup and Decay Time Requirements
- No GAD Prairie Island Unit 1 - Amendment No. +-l 17, 2 Units 1 and 2 4.0-7 Unit 2 - Amendment No. 4-9, 162
Design Features 4.0 45000 40000 35000 30000 I-- 25000 3
m 20000 15000 10000
.5000 0
-0 years X
T F l K F I § V - T - 5 y e a rs IO-1 years I
-I 15 years
_-20 years I
4 4+
ACC EP T 0
.......... S _ _ __ j
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//4
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_ _.I l_.
t _-
- - ACCEPTABLE A,
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1-VN i
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-
h-1 2
3 Initial Enrichment (% U235) 4 5
Figure 4.3.1-4 Spent Fuel Pool Checkerboard Region Burnup and Decay Time Requirements - Fuel with GAD Prairie Island Unit 1 - Amendment No. 5, 172 Units l and 2 4.0-8 Unit 2 - Amendment No. 44 162
Spent Fuel Pool Storage 3.7.17 3.7 PLANT SYSTEMS 3.7.17 Spent Fuel Pool Storage LCO 3.7.17 The combination of initial enrichment, burnup and decay time of each fuel assembly stored in the spent fuel pool shall be within the Unrestricted Region of Figure 3.7.17-- 1 or in accordance with Specification 4.3.1.1.
APPLICABILITY:
Whenever any fuel assembly is stored in the spent fuel storage pool.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Requirements of the LCO A. 1 --- -
NOTE -------------
not met.
LCO 3.0.3 is not applicable.
Initiate action to move the Immediately noncomplying fuel assembly to an acceptable location.
Prairie Island Units I and 2 Unit 1 - Amendment No. 4-n, 172 Unit 2 - Amendment No. 449, 162 3.7.17-1
Spent Fuel Pool Storage 3.7.17 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.17.1 Verify by administrative means the initial Prior to storing enrichment, burnup and decay time of the fuel or moving the assembly is in accordance with Figure 3.7.17-1 or fuel assembly Specification 4.3.1.1.
SR 3.7.17.2 Verify spent fuel pool inventory.
Within 7 days after completion of a spent fuel pool fuel handling campaign Prairie Island Units 1 and 2 Unit 1 - Amendment No. 4-58, 172 Unit 2 - Amendment No. 4, 1624 3.7.17-2
Spent Fuel Pool Storage 3.7.17 35000 30000 25000 SI-l 20000 3.
15000 10000 5000 0
I
_1
- t.
I.__,.-
I 1-I 1
l
--. f.-
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y
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-/ I
-0 years
-5 years 10 years
-15 years
-20 years 1
L L
ILt Xtl_ 1--t
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--1--t--l--
... t -- -- !~~ i --1--' ---
-! I1 j I I I '
1 2
3 4
5 InitIal Enrichment (% U235)
Figure 3.7.17-1 Spent Fuel Pool Unrestricted Region Burnup and Decay Time Requirements Prairie Island Units I and 2 Unit 1 - Amendment No. -18, Unit 2 - Amendment No. 449, 172 1 162 3.7.17-3
Design Features 4.0 4.0 DESIGN FEATURES (continued) 4.3 Fuel Storage 4.3.1 Criticality 4.3.1.1 The spent fuel storage racks are designed and shall be maintained with:
- a.
Fuel assemblies having a maximum U-235 enrichment of 5.0 weight percent;
- b.
keff < 1.0 if fully flooded with unborated water, which includes an allowance for uncertainties as described in Reference 1; C.
keff < 0.95 if fully flooded with water borated to 730 ppm, which includes an allowance for uncertainties as described in Reference 1;
- d.
A nominal 9.5 inch center to center distance between fuel assemblies placed in the fuel storage racks;
- e.
New or spent fuel assemblies with a combination of discharge burnup, initial enrichment and decay time in the "unrestricted range" of Figure 3.7.17-1 may be allowed unrestricted storage in the fuel storage racks; and
- f.
New or spent fuel assemblies with a combination of discharge burnup, initial enrichment and decay time in the "restricted range" of Figure 3.7.17-1 will be stored in compliance with Figures 4.3.1-1 through 4.3.1-4.
Prairie Island Unit I - Amendment No. 4-172 Units l and 2 4.0-2 Unit 2 - Amendment No. 449 162
Design Features 4.0 4.0 DESIGN FEATURES 4.3 Fuel Storage (continued) 4.3.3 Capacity The spent fuel storage pool is designed and shall be maintained with a storage capacity limited to no more than 1386 fuel assemblies not including those assemblies which can be returned to the reactor. The southeast corner of the small pool serves as the spent fuel cask lay down area. To facilitate plant evolutions, four additional storage racks, with a combined capacity of 196, may be temporarily installed in the cask lay down area to provide a total of 1582 storage locations (Ref. 3).
REFERENCES
- 1.
"Prairie Island Units 1 & 2 Spent Fuel Pool Criticality Analysis",
Calculation Note Number CN-WFE-03-40, Westinghouse Electric Company, November 11, 2004.
- 2.
"Criticality Analysis of the Prairie Island Units 1 & 2 Fresh and Spent Fuel Racks", Westinghouse Commercial Nuclear Fuel Division, February 1993.
- 3.
USAR, Section 10.2.
Prairie Island Units 1 and 2 Unit 1 - Amendment No. 4-5i, 172 Unit 2 - Amendment No. 449, 162 l 4.0-4
Design Features 4.0 I
I Fresh Fuel:
Must be less than or equal to Nominal 4.95 w/o 235U No restrictions on burnup Assemblies with GAD shall have a minimum of 4 fuel rods with a minimum concentration of 4.0 w/o Gd2O3.
Burned Fuel: Must satisfy minimum burnup requirements of
[
l Figures 4.3.1-3 or 4.3.1-4 depending on presence of GAD rods in fresh fuel Figure 4.3.1-1 Spent Fuel Pool Burned/Fresh Checkerboard Cell Layout I
Prairie Island Units 1 and 2 Unit 1 - Amendment No. 458, 172 Unit 2 - Amendment No. 449, 1621 4.0-5
Design Features
- 4.0 x
I 1: " -,; ,: :
ii " j I: Is: , 11, RI
.:
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I II I
- 1
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.
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II Fresh Fuel:
Burned Fuel:
Burned Fuel:
Must be less than or equal to nominal 4.95 w/o 235U No restrictions on burnup 3x3 Checkerboard Region Must satisfy minimum burnup requirements of Figure 4.3.1-3 or 4.3.1-4 All Cell Unrestricted Region Must satisfy minimum burnup requirements cf Figure 3.7.17-1 I
I Figure 4.3.1-2 Spent Fuel Pool Checkerboard Interface Requirements I
Prairie Island Units 1 and 2 Unit 1 - Amendment No. 1-59, 172 Unit 2 - Amendment No. 449, 162 1 4.0-6
Design Features 4.0 50000 45000 40000 35000 M 30000 I-3:
Z-25000 Cm.
-O years
-5 years
-10 years
-15 years
-20 years 20000 15000 10000 5000 0
7f*71 IJtiz
_____________ I A
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--t--,--NOT ACCEPTABLE
-+
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I 1
2 3
4 5
Initial Enrichment (% U235)
Figure 4.3.1-3 Spent Fuel Pool Checkerboard Region Burnup and Decay Time Requirements
- No GAD Prairie Island Units 1 and 2 Unit 1 - Amendment No. 454 172 Unit 2 - Amendment No. 4l49, 162 4.0-7
Design Features 4.0 I
I I
I.
I.
I I.
45000 40000 35000 30000 l l--
l I
I i
- 4
--Vi
. I +
S-t-
.j....-.f..
- - ;-t-_.
W e---
t 1---
-.. --- 1-771 --
-0 years
-5 years
-1O years 15 years
-20 years I~-
E 25000 m.0 M~
20000 f
I I
1
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r-4-j-.
.1.
ii I:
IlITI.
f I
izi!i7ii7
.1 ACCEPTABLE
.K417-lijii7ii711J77.ij LI 2-tX27J 4i27+/-1 K I
NOT ACCEPTABLE L
+
V
-
'----v
-+/-
k
.i.b.i I
7F
$1 15000 10000 5000 0
1 2
3 Initial Enrichment (% U235) 4 5
Figure 4.3.1-4 Spent Fuel Pool Checkerboard Region Burnup and Decay Time Requirements - Fuel with GAD Prairie Island Unit 1 - Amendment No. 4-5.8, 172 Units l and 2 4.0-8 Unit 2-Amendment No. 449, 162