L-2012-181, Response to Request for Additional Information on Extended Power Uprate License Amendment Request - Supplement to Proposed Technical Specification Changes Related to Spent Fuel Storage Requirements
| ML12124A065 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 04/30/2012 |
| From: | Richard Anderson Florida Power & Light Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-2012-181 | |
| Download: ML12124A065 (23) | |
Text
0 Florida Power & Light Company, 6501 S.
Ocean Drive, Jensen Beach, FL 34957 FPL April 30, 2012 L-2012-181 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Re:
St. Lucie Plant Unit 2 Docket No. 50-389 Renewed Facility Operating License No. NPF-16 Extended Power Uprate License Amendment Request - Supplement to Proposed Technical Specification Changes Related to Spent Fuel Storage Requirements
References:
(1) R. L. Anderson (FPL) to U.S. Nuclear Regulatory Commission (L-2011-021), "License Amendment Request for Extended Power Uprate;" February 25, 20.11, Accession No. MLI 10730116.
(2) R. L. Anderson (FPL) to U.S. Nuclear Regulatory Commission (L-2011-466), "Revision to Extended Power Uprate License Amendment Request Proposed Technical Specification 5.6, Design Features - Fuel Storage - Criticality," November 4, 2011, Accession No. ML11314A111.
(3) Email from T. Orf (NRC) to L. Abbott (FPL).
Subject:
"St. Lucie 2 EPU RAIs - Reactor Systems (SRXB) re: spent fuel criticality," April 16, 2012.
(4) Email from T. Orf (NRC) to L. Abbott (FPL).
Subject:
"St. Lucie 2 EPU RAls - Reactor Systems (SRXB) re: spent fuel criticality," April 17, 2012.
By letter L-2011-021 dated February 25, 2011 [Reference 1], Florida Power & Light Company (FPL) requested to amend Renewed Facility Operating License No. NPF-16 and revise the St.
Lucie Unit 2 Technical Specifications (TS). The proposed amendment will increase the unit's licensed core thermal power level from 2700 megawatts thermal (MWt) to 3020 MWt and revise the Renewed Facility Operating License and TS to support operation at this increased core thermal power level. This represents an approximate increase of 11.85% and is therefore considered an Extended Power Uprate (EPU).
an FPL Group company P ak
L-2012-181 Page 2 of 2 By letter L-2011-466 [Reference 2], FPL revised the EPU license amendment request (LAR) proposed changes to TS Section 5.6 regarding spent fuel pool storage requirements. In emails dated April 16 and 17, 2012 from NRC (T. Orf) to FPL (L. Abbott) [References 3and 4, respectively], NRC staff requested additional information regarding FPL's LAR to implement the EPU. The emails consisted of 30 requests for additional information (RAIs) from the NRC Reactor Systems Branch (SRXB). Responses to the 30 RAIs are being provided in separate submittals. This letter provides a revision to the proposed changes to TS Section 5.6 regarding spent fuel pool storage requirements.
Attachment I provides a description and justification for the proposed changes to TS Section 5.6. provides the marked-up TS pages associated with the changes described in. Attachment 3 provides the processed or "clean" TS pages.
This submittal does not alter the significant hazards consideration or environmental assessment previously submitted by FPL letter L-2011-021 [Reference 1].
This submittal contains no new commitments and no revisions to existing commitments.
In accordance with 10 CFR 50.91 (b)(1), a copy of this letter is being forwarded to the designated State of Florida official.
Should you have any questions regarding this submittal, please contact Mr. Christopher Wasik, St. Lucie Extended Power Uprate LAR Project Manager, at-772-467-7138.
I-declare under penalty of perjury that the-foregoing is true and correct to the best of my knowledge.
Executedon 30-4wr;I-,2o I -,
Very truly yours, Richard L. Anderson Site Vice President St. Lucie Plant Attachments (3) cc:
Mr. William Passetti, Florida Department of Health
L-2012-181 Page 1 of 6 Response to Request for Additional Information By letter L-2011-466, dated November 4, 2011 [ML11314A111], Florida Power & Light Company (FPL) revised the EPU LAR proposed changes to TS Section 5.6 related to spent fuel pool storage requirements. In an email dated April 16, 2012, the NRC staff requested additional information regarding FPL's license amendment request (LAR) to implement the EPU. The email consisted of 28 requests for additional information (RAIs) from the NRC Reactor Systems Branch (SRXB). In an email dated April 17, 2012, the NRC staff provided two additional RAIs related to spent fuel pool criticality. The responses to the RAIs being submitted in separate correspondence require additional changes to the proposed changes to TS 5.6. The revision to the EPU LAR proposed TS 5.6 related to spent fuel pool criticality is provided below.
Description of the Change Subsequent to the submittal of the EPU LAR, FPL updated the fuel loading curves to preclude the need to extrapolate the values associated with the determination of the minimum required fuel assembly burnup. As a result, FPL revised the EPU LAR proposed changes to TS Section 5.6, FUEL STORAGE - CRITICALITY by letter FPL-2011-466 dated November 4, 2011
[ML11314A111]. By emails dated April 16 and 17, 2012, the NRC identified 30 RAIs from the Reactor Systems Branch related to spent fuel criticality. The responses to the RAIs are being provided in separate submittals. As identified in the RAI responses, TS Section 5.6 is being revised as described below:
Figure 5.6-1, -Allowable Region 1 Storage Patterns and Fuel Arrangements o
DEFINITIONS are revised as follows-
- a. Definition 1 is revised as follows: In the first sentence, insert "or burned" after word "fresh", delete the phrase "or fuel of lower reactivity", and in the second sentence delete the word "Fresh", such that the definition reads:
"Allowable pattern is fresh or burned fuel checkerboarded with completely water-filled cells. Diagram is for illustration only, where F represents Fuel and WH represents a completely water-filled cell."
- b. Definition 2 - In the first sentence, delete the word "assembly", and the phrases "or fuel of lower reactivity" and "or equivalent (5 absorber rods)" and. insert after "placement of fuel" the phrase "assemblies that meet the requirements of", such that the first sentence reads:
"Allowable pattern is placement of fuel assemblies that meet the requirements of type 1 in each 2x2 array location with at least one full-length full strength CEA placed in any cell."
- c. Definition 3 - In the first sentence, delete the word "assembly", and the phrase "or fuel of lower reactivity", and insert after "placement of fuel" the phrase "assemblies that meet the requirements of', such that the first sentence reads:
L-2012-181 Page 2 of 6 "Allowable pattern is placement of fuel assemblies that meet the requirements of type 2 in three of the 2x2 array locations in combination with one completely water-filled cell."
o NOTES are revised as follows:
- a. Note 1 - Replace the second sentence with the following:
"Each cell is a part of up to four 2x2 arrays, and each cell must simultaneously meet the requirements of all those arrays of which it is a part."
- b. Note 2 - Delete the word "Open" and replace it with "Completely water-filled," such that the note reads:
"Completely water-filled cells within any pattern are acceptable."
Figure 5.6-2, Allowable Region 2 Storage Patterns and Fuel Arrangements o
DEFINITIONS are revised as follows:
- a. Definition 1 - In the first sentence, delete the word "assembly" and the phrase "or fuel of lower reactivity" and insert after "pattern is fuel", the phrase "assemblies that meet the requirements of', such that the sentence reads:
"Allowable pattern is fuel assemblies that meet the requirements of type 3 in three of the 2x2 array locations in combination with one completely water-filled cell."
- b. Definition 2 - ln. the first sentence, delete the word "assembly" and-the phrase "or fuel-of lower reactivity" and insert after "pattern is fuel', the phrase "assemblies that meet the requirements of', such that the sentence reads:
"Allowable pattern is fuel assemblies that meet the requirements of type 4 in each of the 2x2 array locations with at least two Metamic inserts placed anywhere in the 2X2 array."
- c.
Definition 3 - In the first sentence, delete the word "assembly" and the phrase "or fuel of lower reactivity" and insert after "pattern is fuel", the phrase "assemblies that meet the requirements of', such that the sentence reads:
"Allowable pattern is fuel assemblies that meet the-requirements of type 5 in each of the 2x2 array locations with at least one Metamic insert placed anywhere in the 2X2 array."
- d. Definition 4-In the first sentence, delete the word "assembly" and the phrases "or fuel of lower reactivity", and "or equivalent", and insert after "pattern is fuel", the phrase "assemblies that meet the requirements of', such that the sentence reads:
"Allowable pattern is fuel assemblies that meet the requirements of type 6 in each of the 2x2 array locations with at least two full-length, full strength 5 finger CEAs placed anywhere in the 2x2 array."
L-2012-181 Page 3 of 6
- e. Definition 5 - In the first sentence, delete the word "assembly" and the phrase "or equivalent" and insert after "pattern is fuel", the phrase "assemblies that meet the requirements of', such that the sentence reads:
"Allowable pattern is fuel assemblies that meet the requirements of type 7 in each of the 2x2 array locations with at least one full-length, full strength 5 finger CEA placed anywhere in the 2x2 array."
SPECIAL ARRANGEMENTS (SR) are revised as follows:
- a. SR1 - In the first sentence, add the phrase "or burned" between "fresh" and "fuel" and delete the term "or fuel of lower reactivity". In the second sentence, add the phrase "or burned" between "fresh" and "fuel". In the third sentence, delete the phrase "or fuel of lower reactivity" and add the phrase "that meets the requirements" between "assembly" and "of type 3". SR1 is revised to read:
"Allowable pattern is up to four fresh or burned fuel assemblies placed in a 3x3 array in combination with Pattern "D" placed outside the 3x3 array. Fresh or burned fuel shall be placed in the corners of the 3x3 array with completely water-filled cells placed face-adjacent on all sides. A fuel assembly that meets the requirements of type 3 shall be placed in the center of the 3x3 array. Minimum burnup for fuel assembly type 3 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only."
- b. SR2 - In the first sentence, add the phrase "or burned" between "fresh" and "fuel" and delete the term "or fuel of lower reactivity". In the second sentence, add the phrase "or burned" between "fresh" and "fuel". In the third sentence, delete the phrase "or fuel of lower reactivity" and add the phrase "that meets the requirements" between "assembly" and "of type 4". SR2 is revised to read:
"Allowable pattern is up to four fresh or burned fuel assemblies placed in a 3x3 array in combination with Pattern "E" placed outside the 3x3 array. Fresh or burned fuel shall be placed in the corners of the 3x3 array with completely water-filled cells placed face-adjacent on all sides. A fuel assembly that meets the requirements of type 4 with a Metamic insert shall be placed in the center of the 3x3 array. Minimum burnup for fuel assembly type 4 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time.
Diagram is for illustration only."
- c. SR3 - In the first sentence, add the phrase "or burned" between "fresh" and "fuel" and delete the term "or fuel of lower reactivity". In the second sentence, add the phrase "or burned" between "fresh" and "fuel". In the third sentence, delete the phrase "or fuel of lower reactivity" and add the phrase "that meets the requirements" between "assembly" and "of type 5". SR3 is revised to read:
"Allowable pattern is up to four fresh or burned fuel assemblies placed in a 3x3 array in combination with Pattern "F" placed outside the 3x3 array. Fresh or burned fuel shall be placed in the corners of the 3x3 array with completely water-filled cells placed face-adjacent on all sides. A fuel assembly that meets the requirements of type 5 with a Metamic insert shall be placed in the center of the 3x3 array. Minimum burnup for fuel assembly type 5 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time.
Diagram is for illustration only."
L-2012-181 Page 4 of 6 o
NOTES are revised as follows:
- a. Note 1 - Replace the second sentence with the following:
"Each cell is a part of up to four 2x2 arrays, and each cell must simultaneously meet the requirements of all those arrays of which it is a part."
- b. Note 2 - Delete the word "Open" and replace it with "Completely water-filled," such that the note reads:
"Completely water-filled cells within any pattern are acceptable."
Figure 5.6-3, Interface Requirements between Region 1 and Region 2 o
DEFINITIONS are revised as follows:
Definition 1-In the third sentence, add the word "completely" such that the sentence reads:
"Locations of completely water-filled cells or CEAs may be in either Region 1 or Region 2."
o NOTES are revised as follows:
Note 1 - Delete the word "Open" and replace it with "Completely water-filled," such that the note reads:
"Completely water-filled cells within any pattern are acceptable."
Figure 5.6-4, Allowable Cask Pit Storage Rack Patterns o
DEFINITIONS are revised-as follows:
- a. Definition 1 - In the first sentence, replace the phrase "Fresh Fuel or lower reactivity" with "fresh or burned". In the second sentence delete the word "Fresh", such that the definition reads:
"Allowable pattern is fresh or burned fuel checkerboarded with completely water-filled cells. Diagram is for illustration only, where F represents Fuel and WH represents a completely water-filled cell."
- b. Definition 2 - In the first sentence, delete the word "assembly", and the phrase "or fuel of lower reactivity" and insert after "placement of fuel" the phrase "assemblies that meet the requirements of', such that the first sentence reads:
"Allowable pattern is placement of fuel assemblies that meet the requirements of type 8 in three of the 2x2 array locations in combination with one completely water-filled cell in any location."
o NOTES are revised as follows:
- a. Note 1 - Replace the second sentence with the following:
"Each cell is a part of up to four 2x2 arrays, and each cell must simultaneously meet the requirements of all those arrays of which it is a part."
- b. Note 2 - Delete the word "Open" and replace it with "Completely water-filled," such that the note reads:
"Completely water-filled cells within any pattern are acceptable."
L-2012-181 Page 5 of 6 Table 5.6-1, Minimum Burnup Coefficients o
Table 5.6-1 is replaced with new Table 5.6-1.
o The new Table 5.6-1 is revised as follows:
Fuel Type 6, Cooling Time - 0 years Coefficients are replaced with:
A -32.4963 B
25.3143 C
-1.5534 o
NOTE 1 is replaced with the following:
"To qualify in a "fuel type", the burnup of a "fuel assembly must exceed the minimum burnup "BU" calculated by inserting the "coefficients" for the associated "fuel type" and "cooling time" into the following polynomial function:"
The revised marked-up TS pages are provided in Attachment 2. Note that the pages contain the applicable changes submitted in FPL letters L-2011-021, dated February 25, 2011, Accession No. ML110730116 and L-2011-466, dated November 4, 2011 Accession No. ML11314A111. The revised clean TS pages are provided in Attachment 3.
Basis for the Change The statement "or equivalent" was originally included to allow an option to-use equivalent poison rods as alternates to CEAs and MetamicTM inserts. Since the current plan is to go ahead with CEAs and MetamicTM inserts as poison in the spent fuel pool, this option of having equivalent poison rods is not being pursued and is considered no longer needed. With the deletion of "or equivalent", criticality analysis remains unaffected as only CEA and MetamicTM.are credited as poison in the analysis. This change is therefore acceptable.
The changes in the allowable storage pattern definitions and notes improve the description of the fuel types-that can be stored in each patterns and do not change the criticality analysis.
This change is therefore acceptable.
Table 5.6-1 Minimum Burnup Coefficients is revised to correct an error in the Coefficients for Fuel Type 6 with 0 years Cooling Time. The analysis of record calculation has been revised.
The criticality analysis is unaffected. This change is therefore acceptable.
No Significant Hazards Consideration Removal of the option to use an equivalent CEA does not diminish the ability to ensure that spent fuel pool criticality remains within acceptable limits. The criticality analysis credits the use of Metamic TM inserts or full-length full-strength CEAs, which will be employed as required by the TS to ensure compliance with the spent fuel pool criticality analysis. The changes in the allowable storage pattern definitions and notes improve the description of the fuel types that can be stored in each patterns and do not change the criticality analysis. The correction to the minimum burnup coefficients is in accordance with the criticality analyses.
Based on the above, the proposed changes 1) do not involve a significant increase in the probability or consequences of an accident previously evaluated, 2) do not create the possibility of a new or different kind of accident from any previously evaluated, and 3) do not result in a significant reduction in a margin of safety.
L-2012-181 Page 6 of 6 Environmental Evaluation The proposed changes are administrative and editorial in nature. Elimination of the option to use an equivalent full-length full-strength CEA, and the clarification of allowable storage patterns are editorial in that they do not impact the ability to comply with the TS requirements; the notes are revised to provide clarity. There are no technical changes associated with the proposed change. The environmental considerations evaluation contained in the EPU LAR remain valid.
Accordingly, the proposed license amendment is eligible for categorical exclusion set forth in 10 CFR 51.22(c)(9). Pursuant to 10 CFR 50.22(b), no environmental impact statement or environmental assessment is needed in connection with the approval of the proposed license amendment.
L-2012-181 Page 1 of 8 ATTACHMENT 2 EXTENDED POWER UPRATE LICENSE AMENDMENT REQUEST SUPPLEMENTAL INFORMATION TO PROPOSED TECHNICAL SPECIFICATION CHANGES SUBMITTED BY FPL LETTER L-2011-021 Technical Specifications Marked-Up Pages Florida Power & Light St. Lucie Unit 2
L-2012-181 Page 2 of 8 NEW Fl Allowable Storage Patterns (See Notes 1 and 2)
Pattern "A" Pattern "B" Pattern "C" See Definition 1 See Definition 2 See Definition 3 F
WH 1
1 2
2 WH F
CEA I
WH 2
fresh or burned fuel DEFINITIONS:
a
- 1. Allowable pattern is Frocsh Fuel 8r fuel of lw;;r rctivity checkerboarded with completely water-filled cells. Diagram is for illustration only, where F represents
-Pfeeh-Fuel and WH represents a completely water-filled cell.
- 2. Allowable pattern is placement of fuel assectype 1 or fuel of 1wr rctivit in each 2x2 array location with at least one full-length full-strength CEA of cquivalcnt (5 abscrbcr rods)placed in any cell. Minimum burnup for fuel assembly type 1 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
- 3. Allowable pattern is placement of fuel a type 2 or ful of loe
ý,t, in three of the 2x2 array locations in combination with one completely water-filled cell. Minimum burnup for fuel assembly type 2 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
[Each cell is a part of up to four 2x2 arrays, and each cell must simultaneousliy NOTES:
maeet therequirementspof alolthose arrays of which it is a part.
- 1. The storage arrangements of fuel within a rack module may contain more than one pattern. There are nm inteface limitations withn,Rego I betveei, rack modules.r Within rF';..
h*"
v.., ea. h assembly
'must meet the burt rcq.rmcts of eaeh 2x2 array that it resides wi;th;r.-
- 2.
cells within any pattern are acceptable.
Completely water-filled FIGURE 5.6-1 Allowable Region 1 Storage Patterns and Fuel Arrangements ST. LUCIE - UNIT 2 5-4h Amendment No. xxx
NEW FIGI SHEET2
- nL.
.u-,-L-2012-181 of 3 Page 3 of 8 DEFINITIONS for Figure 5.6-2 assemblies that meet the requirements of
- 1. Allowable pattern is fuel ass type3 cr fucl cf Ic'wer rcfctity in three of the 2x2 array locations in combination with one completely water-filled cell. Minimum burnup for fuel assembly type 3 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
- 2. Allowable pattern is fuel
,"ype 4e-
'O ful coflow*a*c
.tivit'; in each of the 2x2 array locations with at least two Metamic inserts placed anywhere in the 2x2 array.
Minimum burnup for fuel assembly type 4 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
- 3. Allowable pattern is fuel type 5 or*f, fuel of lo...
roct' in each of the 2x2 array locations with at least one Metamic insert placed anywhere in the 2x2 array.
Minimum burnup for fuel assembly type 5 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
- 4. Allowable pattern is fuel ss,,
ype 6 r fuel of lewer rooctivity in each of the 2x2 t Ty 4
n e-ac h o f ýthe 2 x 2 array locations with at least two full-length, full strength 5 finger CEAs.e. t,eqI,,
,e" t
placed anywhere in the 2x2 array. Minimum burnup for fuel assembly type 6 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
- 5. -Allowable -pattern is fuel
.sse ype 7 in each of the 2x2 array locations with at least one full-length, full strength 5 finger CEA or equivaleRt placed anywhere in the 2x2 array. Minimum burnup for fuel assembly type 7 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.orb ne SR1. Allowable pattern is up to r fresh uel assemblies or fuel of lowefrfeae placed in a 3x3 array in combination with P rn "D" placed outside the 3x3 array. Fresh uel shall be placed in the corners of the 3x r3ay with completely water-filled cells pla ed face-adjacent on all sides. A fuel assemb of type 3 Cr fuel Cf lCwcr rFectity shall be placed in the center of the 3x3 array. Minimum burnup for fuel assembly type 3 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
SR2. Allowable pattern is up to fo fresh &l'1 assemblies Cr fuel of lwer reactivity placed in a 3x3 array in combination with Pa rn "E" placed outside the 3x3 array. Fresh ýWel shall be placed in the corners of the 3x3 r ay with completely water-filled cells placecr"'
face-adjacent on all sides. A fuel assemb of type 4 Or fuel of lower a.tiVity with a Metamic insert shall be placed in the center of the 3x3 array. Minimum burnup for fuel assembly type 4 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
FIGURE 5.6-2 (Sheet 2 of 3)
Allowable Region 2 Storage Patterns and Fuel Arrangements ST. LUCIE - UNIT 2 5-4i Amendment No. xxx
NEW FIGURE 5.6-2orb neL7 SHEPage4 ofo8 SR3. Allowable pattern is up to four fresh fuel assemblies or fut, of Iccr rct,',tvi* placed in a 3x3 array in combination with Pattern "F" placed outside the 3x3 array. Fres Ie shall be placed in the corners of the 3x3 array with completely water-filled cells placed face-adjacent on all sides. A fuel assembly of type 5 cr fucl ef Iewor rooctivity with a Metamic insert shall be placed in the centelf the 3x3 array. Minimum burnup for fuel assembly type 5 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
NOTES
- 1. The storage arrangements of fuel within a rack module may contain more than one pattern. There are no interfae limi.tations wi.thi Region 2 between ra.k modules o J"*..t'l V-9.'Tn.M PARKS;
.qkA9
- .~
PAR'I1; A1;q'.'M[*[, ;*"
ust Fneet the UUFRUP Feel H I Fengents et eaem Px arrziy orF allowed spee a! armi cells within any pattern are acceptable.
Each cell is a part of up to four 2x2 arrays, and each cell mu~st which it is a part.
simultaneously meet the requirements of all those arrays of FIGURE 5.6-2 (Sheet 3 of 3)
Allowable Region 2 Storage Patterns and Fuel Arrangements ST. LUCIE - UNIT 2 5-4k Amendment No. xxx
NL-2012-181 SHEET 2 of 2 Page 5 of 8 DEFINITION:
- 1. Each 2x2 array that spans Region 1 and Region 2 shall match one of the Region 2 allowable storage patterns as defined by Specification 5.6.1.c.3. Any required Metamic inserts must be placed into the fuel assemblies in Region 2. Locations of
'ater-filled cells or CEAs may be in either Region 1 or Region 2. For interface E
n-assemblies, the requirements of Specifications 5.6.1.c.2 and Specification 5.6.1.c.3 shall be followed within Region 1 and Region 2, respectively. The Diagrams are for illustration only.
NOTES:
- 1. Open cells within any pattern are acceptable.
Completely water-filled FIGURE 5.6-3 (Sheet 2 of 2)
Interface Requirements between Region I and Region 2 ST. LUCIE - UNIT 2 5-4m Amendment No. xxx
NEW FIGURE 5.6-4 cl-111111-1-111-1-1-i L-2012-181 Page 6 of 8 Allowable Storage Patterns (See Notes 1 and 2)
Pattern "A" See Definition 1 F
WH WH F
Pattern "B" See Definition 2 WH 8
assemblies that meet the requirements of DEHFNiTIONS:
fre
- 1. Allowable pattern is Frcsh Fuc-o
.ower reacti.ity fuel checkerboarded with completely water-filled cells. Diagram is for illustration only, where F represents
-Fesh-Fuel and WH represents a completely water-filled cell.
- 2. Allowable pattern is placement of fuel asi type 8 or fuol of le r... t. it in three of the 2x2 array locations in combination with one completely water-filled cell in any location. Minimum burnup for fuel assembly type 8 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
NOTES:
- 1. The storage arrangements of fuel within a rack -module may contain more than one pattern..
.ho..
arc no intcfae lim.itati.ns within the caSk Pit o.8t..g. r..k, that it rcsidcs within.
=
clwithin any pattern are acceptable.
Rents of eaeh 2)E2 array-Each cell is a part of up to four 2x2 arrays, and each cell must simultaneously meet the requirements of all those arrays of which it is a part.
FIGURE 5.6-4 Allowable Cask Pit Storage Rack Patterns ST. LUCIE - UNIT 2 5-4n Amendment No. xxx
L-2012-181 Page 7 of 8 NE TBLE.6-1 TABLE 5.6-1 Minimum Burnup Coefficients Fuel Type Cooling Time Coefficients (Years)
A B C 1
0
-33.4237 25.6742
-1.6 2
0
-25.3198 14.3200
-".042 3
0
-23.4150 16.2050 X-0.5500 4
0
-33.6414 25.0670
-1.5551 2.5
-32.3764 23.9988
-1.5075 5
-30.9234 22.938
-1.4372
ý10
-28.4951 21.1 1
-1.3029 1
-27.2024 2 0.802
-1.2479 20
-25.2009 8.6218
-1 :0364 5
0
-24.8402 23.5991
-1.2082 2.5
-23.0170 21.6493
-1.0298 5
",21.929, 20.6257
-0.9730 10
-2 0K 3 19.0808
-0.9022 15
-1.53 18.5429
-0.9129 20
/-1 8.7480 17.7308
-0.8390 6
0
-32.4900 25.3077
-1.5518 2.5
-31.1598 23.9185
-1.4435 5
X
-29.2169
\\ý2.5424
-1.3274 1
-26.8886 2".662
-1.1425
,15
-25.5703 19.7 9b2
-1.1129
_ 20
-24.5754 18.905(",
-1.0147 7
0
-24.6989 24.1660
-1.2578 2.5
-23.0399 22.3047
-1.0965 5
-21.3290 20.7413
-0.9613 10
-20.0836 19.4780
-".949 15
-19.2480 18.5880
-0.8 5
20
-18.6424 18.1241
-0.8950 8
0
-47.5000 12.5000 0.0000 NOTES:
- 1. 9-4,if i fuel type, the calculatod burnup of a fuel assembly must oxcooad "mi* R.*;.u*m,,*'
lbumu
" deer i
n,!*r.qe.d fo,-r the, "roo"r, l im-r 're"a.**lLrr,.*i.irdi;'.*
planPar enrichment" Of th1 fuel o-9 Mbly. The "minim-Um bui;n-up" for any fuce type is-dte-rmined from the follwing p'lyncmial fun.tien:
BU = A + B*E + C*E2, where:
RLJ Minimum Prurnuin (GiWf/MTU*
=" Mii u
(G D
M U
E = Maximum Initial Planar Average Enrichment (weight percent U-235)
A, B, C = Coefficients for each fuel type
- 2. Interpolation between values of cooling time is not permitted.
ST. LUCIE - UNIT 2 5-4o Amendment No. xxx To qualify in a "fuel type", the burnup of a fuel assembly must exceed the minimum burnup "131-"
fcaliculatedbyinserting the "coefficients" for the associated "fuel type" and "cooling time" into the following polynomnial function:
L-2012-181 Page 8 of 8 The data presented below replaces the data in are no changes to the balance of the table.
NEW TABLE 5.6-1, there Fuel Type Cooling Time Coefficients (Years)
A B
C 1
0
-33.4237 25.6742
-1.6478 2
0
-25.3198 14.3200
-0.4042 3
0
-23.4150 16.2050
-0.5500 0
-33.2205 24.8136
-1.5199 2.5
-31.4959 23.4776
-1.4358 5
-30.4454 22.7456
-1.4147 10
-28.4361 21.2259
-1.2946 15
-27.2971 20.3746
-1.2333 20
-26.1673 19.4753
-1.1403 0
-24.8402 23.5991
-1.2082 2.5
-22.9981 21.6295
-1.0249 5
-21.8161 20.5067
-0.9440 10
-20.0864 19.0127
-0.8545 15
-19.4795 18.3741
-0.8318 20
-18.8225 17.7194
-0.7985 0
33.1568 28n.00864.2 2.5
-30.6688 23.6229
-1.4025 5
-29.2169 22.5424
-1.3274 10
-27.2539 21.0241
-1.2054 15
-25.7327 19.8655
-1.1091 20
-25.2717 19.5222
-1.1163 0
-24.6989 24.1660
-1.2578 2.5
-23.0399 22.3047
-1.0965 5
-21.2473 20.6553
-0.9403 10
-20.1775 19.5506
-0.9015 15
-19.4037 18.6626
-0.8490 20
-18.3326 17.7040
-0.7526 8
0
-43.4750 11.6250 0.0000
-32.4963 25.3143
-1.5534
L-2012-181 ATTACHMENT 3 EXTENDED POWER UPRATE LICENSE AMENDMENT REQUEST SUPPLEMENTAL INFORMATION TO PROPOSED TECHNICAL SPECIFICATION CHANGES SUBMITTED BY FPL LETTER L-2011-021 Technical Specifications Clean Pages Florida Power & Light St. Lucie Unit 2 This coversheet plus 6 pages.
Allowable Storage Patterns (See Notes 1 and 2)
Pattern "A" See Definition 1 F
WH WH F
Pattern "B" See Definition 2 CEA 1
Pattern "C" See Definition 3 2
2 WH 2
DEFINITIONS:
- 1. Allowable pattern is fresh or burned fuel checkerboarded with completely water-filled cells.
Diagram is for illustration only, where F represents Fuel and WH represents a completely water-filled cell.
- 2. Allowable pattern is placement of fuel assemblies that meet the requirements of type 1 in each 2x2 array location with at least one full-length full-strength CEA placed in any cell.
Minimum burnup for fuel assembly type 1 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
- 3. Allowable pattern is placement of fuel assemblies that meet the requirements of type 2 in three of the 2x2 array locations in combination with one completely water-filled cell.
Minimum burnup for fuel assembly type 2 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
NOTES:
- 1. The storage arrangements of fuel within a rack module may contain more than one pattern.
Each cell is a part of up to four 2x2 arrays, and each cell must simultaneously meet the requirements of all those arrays of which it is a part.
- 2. Completely water-filled cells within any pattern are acceptable.
FIGURE 5.6-1 Allowable Region 1 Storage Patterns and Fuel Arrangements ST. LUCIE - UNIT 2 5-4h Amendment No. xxx
DEFINITIONS for Figure 5.6-2
- 1.
Allowable pattern is fuel assemblies that meet the requirements of type 3 in three of the 2x2 array locations in combination with one completely water-filled cell. Minimum burnup for fuel assembly type 3 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
- 2.
Allowable pattern is fuel assemblies that meet the requirements of type 4 in each of the 2x2 array locations with at least two Metamic inserts placed anywhere in the 2x2 array.
Minimum burnup for fuel assembly type 4 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
- 3.
Allowable pattern is fuel assemblies that meet the requirements of type 5 in each of the 2x2 array locations with at least one Metamic insert placed anywhere in the 2x2 array.
Minimum burnup for fuel as'*embly type 5 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
- 4.
Allowable pattern is fuel assemblies that meet the requirements of type 6 in each of the 2x2 array locations with at least two full-length, full strength 5 finger CEAs placed anywhere in the 2x2 array. Minimum burnup for fuel assembly type 6 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
- 5.
Allowable pattern is fuel assemblies that meet the requirements of type 7 in each of the 2x2 array locations with at least one full-length, full strength 5 finger CEA placed anywhere in the 2x2-array. Minimum burnup for fuel assembly type 7 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
SRI. Allowable pattern is up to four fresh or burned fuel assemblies placed in a 3x3 array in combination with Pattern "D" placed outside the 3x3 array. Fresh or burned-fuel shall be placed in the corners -of the 3x3 array with completely water-filled cells placed face-adjacent on all sides. A fuel assembly that meets the requirements of type 3 shall be placed in the center of the 3x3 array.
Minimum burnup for fuel assembly type 3 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment. Diagram is for illustration only.
SR2. Allowable pattern is up to four fresh or burned fuel assemblies placed in a 3x3 array in combination with Pattern-"E" placed outside the 3x3 array. Fresh or burned fuel shall be placed in the corners of the 3x3 array with completely water-filled cells placed face-adjacent on all sides. A fuel assembly that meets the requirements of type 4 with a Metamic insert shall be placed in the center of the 3x3 array. Minimum burnup for fuel assembly type 4 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
FIGURE 5.6-2 (Sheet 2 of 3)
Allowable Region 2 Storage Patterns and Fuel Arrangements ST. LUCIE - UNIT 2 5-4j Amendment No. xxx
SR3. Allowable pattern is up to four fresh or burned fuel assemblies placed in a 3x3 array in combination with Pattern "F" placed outside the 3x3 array. Fresh or burned fuel shall be placed in the corners of the 3x3 array with completely water-filled cells placed face-adjacent on all sides. A fuel assembly that meets the requirements of type 5 with a Metamic insert shall be placed in the center of the 3x3 array. Minimum burnup for fuel assembly type 5 is defined in Table 5.6-1 as a function of maximum initial planar average enrichment and cooling time. Diagram is for illustration only.
NOTES
- 1.
The storage arrangements of fuel within a rack module may contain more than one pattern.
Each cell is a part of up to four 2x2 arrays, and each cell must simultaneously meet the requirements of all those arrays of which it is a part.
- 2.
Completely water-filled cells within any pattern are acceptable.
FIGURE 5.6-2 (Sheet 3 of 3)
Allowable Region 2 Storage Patterns and Fuel Arrangements ST. LUCIE - UNIT 2 5--4k Amendment No. xxx
DEFINITION:
- 1.
Each 2x2 array that spans Region 1 and Region 2 shall match one of the Region 2 allowable storage patterns as defined by Specification 5.6.1.c.3. Any required Metamic inserts must be placed into the fuel assemblies in Region 2. Locations of completely water-filled cells or CEAs may be in either Region 1 or Region 2. For interface assemblies, the requirements of Specifications 5.6.1.c.2 and Specification 5.6.1.c.3 shall be followed within Region 1 and Region 2, respectively. The Diagrams are for illustration only.
NOTES:
- 1.
Completely water-filled cells within any pattern are acceptable.
FIGURE 5.6-3 (Sheet 2 of 2)
Interface Requirements between Region 1 and Region 2 ST. LUCIE - UNIT 2 5-4m Amendment No. xxx
Allowable Storage Patterns (See Notes 1 and 2)
Pattern "A" See Definition I F
WH WH F
Pattern "B" See Definition 2 8
8 WH 8
DEFINITIONS:
- 1.
Allowable-pattern is fresh or burned fuel checkerboarded with completely water-filled cells.
Diagram is for illustration only, where F represents Fuel and WH represents a completely water-filled cell.
- 2.
Allowable pattern is placement of fuel assemblies thatrmeet the requirements of type 8 in three of the 2x2 array locations in-combination with one completely water-filled cell in any location. Minimum burnup for fuel assembly-type 8 is defined in Table 5.6-1 as a function of maximum initial planar average-enrichment. Diagram is for illustration only.
NOTES:
- 1.
The storage arrangements of fuel within a rack module may contain more than one pattern.
Each cell is a part of up to four 2x2 arrays, and each cell must simultaneously meet the requirements of all those arrays of which it is a part.
- 2.
Completely water-filled cells within any pattern are acceptable.
FIGURE 5.6-4 Allowable Cask Pit Storage Rack Patterns ST. LUCIE - UNIT 2 5-4n Amendment No. xxx
TABLE 5.6-1 Minimum Burnup*Coefficients FuelType Cooling Time Coefficients (Years)
A B
C 1
0
-33.4237 25.6742
-1.6478 2
0
-25.3198 14.3200
-0.4042 3
0
-23.4150 16.2050
-0.5500 0
-33.2205 24.8136
-1.5199 2.5
-31.4959 23.4776
-1.4358 5
-30.4454 22.7456
-1.4147 10
-28.4361 21.2259
-1.2946 15
-27.2971 20.3746
-1.2333 20
-26.1673 19.4753
-1.1403 0
-24.8402 23.5991
-1.2082 2.5
-22.9981 21.6295
-1.0249 5
-21.8161 20.5067
-0.9440 10
-20.0864 19.0127
-0.8545 15
-19.4795 18.3741
-0.8318 20
-18.8225 17.7194
-0.7985 0
-32:4963 25.3143
-1.5534 2.5
-30.6688 23.6229
-1.4025 5
-29.2169 22.5424-
-1.3274 10
-27.-2539 21.0241
-1.2054 15
-25.7327 19.8655
-1.1091 20
-25.2717 19.5222
-1.1163 0
-24.6989 24.1660
-1.2578 2.5
-23.0399 22.3047
-1.0965 5
-21.2473 20.6553
-0.9403 10
-20.1775 19.5506
-0.9015 15
-19.4037 18.6626
-0.8490 20
-18.3326 17.7040
-0.7526 8
0
-43.4750 11.6250
-0.0000 NOTES:
- 1. To qualify in a "fuel type", the burnup of a fuel assembly must exceed the minimum burnup "BU" calculated by inserting the "coefficients" for the associated "fuel type" and "cooling time" into the following polynomial function:
BU = A + B*E + C*E2, where:
BU = Minimum Burnup (GWD/MTU)
E = Maximum Initial Planar Average Enrichment (weight percent U-235)
A, B, C = Coefficients for each fuel type
- 2.
Interpolation between values of cooling time is not permitted.
ST. LUCIE - UNIT 2 5-4o Amendment No. xxx