ML102460100
| ML102460100 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 09/02/2010 |
| From: | Entergy Nuclear Northeast, Entergy Nuclear Operations |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML102460096 | List: |
| References | |
| JAFP-10-0122, RA-ENO-EP1-10-135, TAC ME3786 | |
| Download: ML102460100 (12) | |
Text
ENCLOSURE 2 RA-ENO-EP1-10-135 Response to NRC Supplemental RAIs 1, 4, 5, and 6 for James A FitzPatrick Cycle 20 SLMCPR Submittal Non-Proprietary Information INFORMATION NOTICE This is a non-proprietary version of RA-ENO-EP1-10-135 Enclosure 1, which has the proprietary information removed. Portions of the document that have been removed are indicated by white space inside open and closed bracket as shown here (( )).
RA-ENO-EP1-10-135 Non-Proprietary Information Page 1 of 11 NRC RAI-01
- a. For the Cycle 20 Core table provided in response to RAI-01 in the July 15, 2010, supplement, please provide a core map identifying each fuel assemblies including Cycle 18 (thrice-burn) through Cycle 20 (fresh fuel) and identifying assemblies reached 0.1 %
boiling transition criterion for the SLMCPR value calculation.
- b. Provide more details to describe how each of the identified inputs was used to determine the final core loading pattern for Cycle 20. Also provide a flow chart to show specific values/limit and to describe the inter-relationship among the inputs of: cycle energy requirements, reactivity margins, discharge exposure limitations and other limits, desired control rod patterns, and minimize channel distortion.
- c. Core design is an iterative process designed to develop an optimal configuration that meets both operational requirements such as those identified in the response to RAI-01 and all applicable safety limits. Please provide a description of the core design process used for Cycle 20 and the Quality Assurance and Quality Control procedures in place to assure that the final design meets the SLMCPR limits for the fuel used in the core.
GNF Response
Reference:
NRC Audit on Fitzpatrick C20 SLMCPR Tech. Spec. Change letter.
Attendees: Tai Huang (NRC), Tony Attard (NRC), George Rorke (Entergy), Atul Karve (GNF),
and Russ Fawcett (GNF).
Time and Place: August 10, 2010, 9.00am to 3.00pm, NEI office at 1776 I Street NW, Suite 400, Washington, DC, 20006 RAI-01 Part a. This question consists of two parts.
At the audit it was agreed that to close the first part of Part a, FitzPatrick C19 and C20 bundle ID maps and bundle type maps are adequate.
- 1. Fitzpatrick C19 reference loading pattern bundle ID and bundle type map is shown in the enclosed three figures labeled Fitzpatrick Cycle 19 Bundle ID (2 figures) and Type Map.
- 2. Fitzpatrick C20 reference loading pattern bundle ID and bundle type map is shown in the enclosed three figures labeled Fitzpatrick Cycle 20 Bundle ID (2 figures) and Type Map.
The response to RAI-06 (1) addresses the second part of RAI-01 Part a.
RAI-01 Part b. At the audit it was agreed that to close RAI-01 Part b, the presentation provided by Russ Fawcett, on the basics of how GNF performs fuel cycle core design is adequate. The presentation is provided in Enclosure 3 labeled as Attachment 1. Please note that the presentation is general information, which is subject to change, and is not intended to reflect specific procedures.
RA-ENO-EP1-10-135 Non-Proprietary Information Page 2 of 11
RA-ENO-EP1-10-135 Non-Proprietary Information Page 3 of 11
RA-ENO-EP1-10-135 Non-Proprietary Information Page 4 of 11
RA-ENO-EP1-10-135 Non-Proprietary Information Page 5 of 11
RA-ENO-EP1-10-135 Non-Proprietary Information Page 6 of 11 The details of the bundle type and bundle names in Cycle 19 reference loading pattern are:
Bundle Type Bundle Name 1
GE14-P10DNAB405-16GZ-100T-150-T6-2794 2
GE14-P10DNAB405-15G6.0-100T-150-T6-2793 3
GE14-P10DNAB402-10G6.0/4G5.0/1G2.0-100T-150-T6-2905 4
GE14-P10DNAB405-16GZ-100T-150-T6-2906 5
GE14-P10DNAB402-10G6.0/4G5.0/1G2.0-100T-150-T6-2905 6
GNF2-P10DG2B377-13GZ-100T2-150-T6-3073 7
GNF2-P10DG2B379-14GZ-100T2-150-T6-3074 8
GNF2-P10DG2B396-15GZ-100T2-150-T6-3075 9
GNF2-P10DG2B407-6G6.0/6G5.0-100T2-150-T6-3076 10 GNF2-P10DG2B394-13GZ-100T2-150-T6-3077 The details of the bundle type and bundle names in Cycle 20 reference loading pattern are:
Bundle Type Bundle Name 3
GE14-P10DNAB402-10G6.0/4G5.0/1G2.0-100T-150-T6-2905 4
GE14-P10DNAB405-16GZ-100T-150-T6-2906 6
GNF2-P10DG2B377-13GZ-100T2-150-T6-3073 7
GNF2-P10DG2B379-14GZ-100T2-150-T6-3074 8
GNF2-P10DG2B396-15GZ-100T2-150-T6-3075 9
GNF2-P10DG2B407-6G6.0/6G5.0-100T2-150-T6-3076 10 GNF2-P10DG2B394-13GZ-100T2-150-T6-3077 12 GNF2-P10DG2B378-16GZ-100T2-150-T6-3299 13 GNF2-P10DG2B380-16GZ-100T2-150-T6-3298 14 GNF2-P10DG2B404-12GZ-100T2-150-T6-3297 16 GNF2-P10DG2B390-14GZ-100T2-150-T6-3300 RAI-01 Part c. This question consists of two parts.
Regarding the first part of the question - As for RAI-01 Part b, see the presentation provided by Russ Fawcett, on the basics of how GNF performs fuel cycle core design (provided in Enclosure 3 labeled as Attachment 1).
Regarding the second part of the question - A licensing applicability check is performed on the final core loading pattern and is documented in the Design Record Files. The licensing of the reference loading pattern is applicable to the final loading pattern if the criteria specified in GESTAR II Section 3.4.2 are met. If any of the criteria in GESTAR II Section 3.4.2 are not met, a re-examination of the bases is performed as specified in GESTAR Section 3.4.3, which includes the Safety Limit MCPR. The licensing applicability review ensures that the Supplemental Reload Licensing Report remain valid for the final loading pattern.
RA-ENO-EP1-10-135 Non-Proprietary Information Page 7 of 11 NRC RAI-04 The Nuclear Regulatory Commission (NRC) staff has reviewed the July 15, 2010, Entergy submittal of responses to Requests for Additional Information associated with changes to the James A. FitzPatrick (JAF) Nuclear Power Plant Cycle 20 Safety Limit Minimum Critical Power Ratios (SLMCPRs) and has the following question concerning the response to RAI-04 of the submittal:
Please identify how many of the 10x10 (GE14, GNF2) data shown in new Figure 5 are GNF2 data, because new Figure 5 only shows combined data points for GE14 and GNF2.
GNF RESPONSE For clarity, the entire response to Item 2 of RAI-04 is provided here, augmented to provide information related to this additional request.
The 10x10 GE14 and GNF2 data points from several cases are added to Figure 5. Also updated are the lattice configurations (e.g. 8x8, 9x9, 10x10) of each fuel product line.
The 10x10 (GE14, GNF2) points shown in Figure 5 reflect transition cores with a mix of 10x10 fuel products. Thus, there are not specific GNF2 data points in Figure 5. The table following Figure 5 provides the GE14 and GNF2 batch sizes, and the corresponding ((
)) for the 10x10 (GE14, GNF2) points in the figure. The table is in ascending order of the abscissa of Figure 5 for ease of correlation to the figure. Sums of batch sizes and (( )) may not add to 100% due to rounding and/or the presence of other fuel products in the core.
RA-ENO-EP1-10-135 Non-Proprietary Information Page 8 of 11 Figure 5
((
))
Table Figure 5 - 10x10 (GE14, GNF2) Data Points
((
Batch Fraction (%)
((
GE14 GNF2 31.0 38.5 28.6 71.4 64.4 35.6 31.0 38.5 31.0 38.5 64.4 35.6 28.6 71.4 28.6 71.4 67.4 32.6 64.4 35.6 67.4 32.6
))
67.4 32.6
))
RA-ENO-EP1-10-135 Non-Proprietary Information Page 9 of 11 NRC RAI-05 and RAI-06 RAI-05: Please identify any evaluation reports that the licensee used to reach the conclusion that effect of GNF2 bent spacer wing to Fitzpatrick Cycle 20 operation is minimum. Also, provide technical justification as to why the corner wings are limiting.
RAI-06: Based on the results of the August 10, 2010, audit, the licensee/GE-GNF committed to provide the following documents to support the NRC staff review of this LAR, dated April 21, 2010:
(1) Design Record Files for JAF Cycle 20 final core loading pattern, and SLMCPR calculation including core map to show those bundles experienced 0.1% boiling transition criterion; (2) Final evaluation report on Part 21 issue regarding to the GNF2 Fuel bent spacer wing; (3) Core map with identification of the fuel bundles for JAF Cycle 20.
GNF Response
Reference:
NRC Audit on Fitzpatrick C20 SLMCPR Tech. Spec. Change letter.
Attendees: Tai Huang (NRC), Tony Attard (NRC), George Rorke (Entergy), Atul Karve (GNF),
and Russ Fawcett (GNF).
Time and Place: August 10, 2010, 9.00am to 3.00pm, NEI office at 1776 I Street NW, Suite 400, Washington, DC, 20006 At the audit it was agreed that the following items support the closure of this RAI.
(5) Qualitative explanation (Technical Basis document) of bent spacer wing (6) Summary of Evaluation Technique (with quantitative numbers)
(7) Number crunching document report for evaluation of bent spacer wing impact on Fitzpatrick C20 SLMCPR.
(8) Core map of % SLMCPR contribution layout for two-loop operation (TLO) and single-loop operation for (SLO) Fitzpatrick C20 (w/o bent flow spacer wing).
Item (1) is provided in Enclosure 3 labeled Attachment 2 (RAI-05 Part 2 and RAI-06 Part 2).
Item (2) is provided in Enclosure 3 labeled Attachment 3 (RAI-05 Part 1).
Item (3) is provided in Enclosure 3 labeled Attachment 4 (RAI-05 Part 1). Further, Attachment 5 of Enclosure 3 provides additional information which supports the position that the bent corner wing are the limiting location (RAI-05 Part 2 and RAI-06 Part 2).
Item (4): (RAI-06 Part 1) The bundle grouping for the TLO SLMCPR calculations is shown in Table RAI-05-1, along with the number of bundles in the group, their contribution to percent number of rods in boiling transition (NRSBT) and the group average exposure. The 2-dimensional map of the bundle groupings is shown in Figure RAI-05-1. The bundle grouping for the SLO SLMCPR calculations is shown in Table RAI-05-2, along with the number of bundles in the group, their contribution to % NRSBT and the group average exposure. The 2-dimensional map of the bundle groupings is shown in Figure RAI-05-2. ((
)) Both the TLO and SLO are (( ))
The response to RAI-06 Part 3 is contained with RAI-01.
RA-ENO-EP1-10-135 Non-Proprietary Information Page 10 of 11 Table RAI-05-1: Bundle group, # bundles, type, % contribution to NRSBT, and group exposure for TLO.
((
))
Figure RAI-05-1: Two-dimensional map of the bundle groupings for percent contribution to NRSBT for TLO.
((
))
RA-ENO-EP1-10-135 Non-Proprietary Information Page 11 of 11 Table RAI-05-2: Bundle group, # bundles, type, % contribution to NRSBT, and group exposure for SLO.
((
))
Figure RAI-05-2: Two-dimensional map of the bundle groupings for percent contribution to NRSBT for SLO.
((
))