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| #REDIRECT [[NL-16-2457, Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment]] | | {{Adams |
| | | number = ML16328A303 |
| | | issue date = 11/18/2016 |
| | | title = Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment |
| | | author name = Pierce C R |
| | | author affiliation = Southern Nuclear Operating Co, Inc |
| | | addressee name = |
| | | addressee affiliation = NRC/Document Control Desk, NRC/NRR |
| | | docket = 05000366 |
| | | license number = |
| | | contact person = |
| | | case reference number = NL-16-2457 |
| | | package number = ML16328A293 |
| | | document type = Letter, Response to Request for Additional Information (RAI) |
| | | page count = 9 |
| | | project = |
| | | stage = Supplement |
| | }} |
| | |
| | =Text= |
| | {{#Wiki_filter:Proprietary and/or Security-Related Information-Withhold Under 10 CFR 2.390 .. &. Southern Nuclear November 18, 2016 Charles R. Pierce Regulatory Affairs Director 40 Inverness Center Parkway Post Ofiice Box 1295 Birmingham, AL 35242 205 992 7872 tel 205 992 7601 fax crpierce@southernco.com Docket Nos.: 50-366 NL-16-2457 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Edwin I. Hatch Nuclear Plant -Unit 2 Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment Ladies and Gentlemen: |
| | By application dated August 29, 2016, Southern Nuclear Operating Company (SNC), the licensee for Edwin I. Hatch Nuclear Plant (HNP) Unit 2, submitted an amendment (ADAMS Accession No. ML 16245A257) that requested changes to Technical Specifications Section 2.1.1.2, "Reactor Core SLs." The amendment proposed revising the cycle-specific safety limit minimum critical power ratio (SLMCPR) for the upcoming Cycle 25. The U. S. Nuclear Regulatory Commission (NRG) issued a request for additional information (RAI) on November 2, 2016. The enclosures to this letter provide the additional information for the NRG staff to complete its safety evaluation of the application. |
| | This letter contains no NRG commitments. |
| | If you have any questions, please contact Ken |
| | * McElroy at 205.992.7369. |
| | Mr. C. R. Pierce states he is the Regulatory Affairs Director for Southern Nuclear Operating Company, is authorized to execute this oath on behalf of Southern Nuclear Operating* |
| | Company and, to the best of .his knowledge and belief, the facts set forth in this letter are true. |
| | C.R. Pierce Director Regulatory Affairs CAP/lac Sworn to and subscribed before me this -1&__ day of No 11 e.M..k Notary Public My commission expires: /D * 'l -7..o( I . . ! , 2016. |
| | U.S. Nuclear Regulatory Commission NL-16-2457 Page 2 |
| | |
| | ==Enclosures:== |
| | : 1) Response to NRC RAI for Edwin I. Hatch Unit 2, Cycle 25 SLMCPR submittal |
| | -Proprietary Information. |
| | : 2) Response to NRC RAI for Edwin I. Hatch, Unit 2, Cycle 25 SLMCPR submittal |
| | -Non-Proprietary Information. |
| | : 3) Affidavit for Enclosure |
| | : 1. cc: Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President |
| | & CEO Mr. D. G. Bost, Executive Vice President |
| | & Chief Nuclear Officer Mr. D. R. Vineyard, Vice President |
| | -Hatch Mr. M. D. Meier, Vice President |
| | -Regulatory Affairs Mr. D. R. Madison, Vice President |
| | -Fleet Operations Mr. B. J. Adams, Vice President |
| | -Engineering Mr. G. L. Johnson, Regulatory Affairs Manager -Hatch RType: CHA02.004 U.S. Nuclear Regulatory Commission Ms. C. Haney, Regional Administrator Mr. M. D. Orenak, NRR Project Manager -Hatch Mr. D. H. Hardage, Senior Resident Inspector |
| | -Hatch State of Georgia Mr. R.E. Dunn, Director -Environmental Protection Division Edwin I. Hatch Nuclear Plant -Unit 2 Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment Enclosures ENCLOSURE2 VSP-SNC-HVI-16-082 RI Revised Response to NRC RAI for Hatch 2 Cycle 25 SLMCPR Submittal Non-Proprietary Information |
| | -Class I (Public) INFORMATION NOTICE This is a non-proprietary version of VSP-SNC-HVl 082 RI Enclosure 1, which has the proprietary information removed. Portions of the document that have been removed are indicated by white space inside an open and closed bracket as shown here [[ ]]. |
| | VSP-NPP-HVl-16-082 Rl Enclosure 2 *RAil Non-Proprietary Information |
| | -Class I (Public) Page I of J. The SLM CPR shall have appropriate margin to reasonably protect the integrity of fuel to meet the requirements of Title 10 of the Code of Federal Regulations, Part 50, Appendix A, "General Design Criteria for Nuclear Power Plants, Criterion 10, "Reactor Design." Table 3 of Global Nuclear Fuel-Americas, LLC report GNF-003N7688-Rl-P, "GNF Additional Information Regarding the Requested Changes to the Technical Specification SLMCPR, Hatch 2 Cycle 25," (non-public, proprietary) showed TS single-loop operation SLMCPR to be 1.13, which is rounded from the [[ ]]. Please provide justification for the apparent non-conservative rounding from [[ ]] to 1.13, or demonstrate that use of this rounding convention is not significant with respect to the margin of safety. GNF Response Per the approved methodology (Reference 1 ), limiting rod patterns used in the determination of the SLMCPR are sufficiently conservative to ensure that the use of standard rounding practices, to two places past the decimal point, is not significant with respect to the margin of safety. The degree of rounding, from [[ ]] to 1.13, is therefore less than the 0.005 level of significance established as part of the approved methodology. |
| | Furthermore, the Appendix C RAJ 17 response (page C-48) of Reference 2 discusses the 0.005 level of significance threshold in the context of the inherent variability in the Monte Carlo process. Quoted from the RAI response; "This threshold was chosen to correspond to the inherent variability in the Monte Carlo process for determining the safety limit. It is also consistent with the accepted practice of rounding and reporting SLMCPR values to two places past the decimal point. By definition, a change in a statepoint condition that goes into the evaluation of a SLMCPR is not significant unless it results in an increase in the calculated SLMCPR by +0.005." References |
| | : 1. GE Nuclear Energy, "Methodology and Uncertainties for Safety Limit MCPR Evaluations," NEDC-32601P-A, Revision 0, August 1999. 2. GE Hitachi Nuclear Energy, "Applicability of GE Methods to Expanded Operating Domains," NEDC-33173P-A, Revision 4, November 2012. |
| | ENCLOSURE3 VSP-SNC-HVI-16-082 RI Affidavit for Enclosure 1 |
| | Global Nuclear Fuel -Americas AFFIDAVIT I, Brian R. Moore, state as follows: (1) I am Engineering Manager, Core & Fuel Engineering, Global Nuclear Fuel -Americas, LLC (GNF-A), and have been, delegated the function of reviewing the information described in paragraph (2) which is sought to be withheld, and have been authorized to apply for its withholding. |
| | (2) The information sought to be withheld is contained in Enclosure 1 of GNF's letter, VSP-SNC-HVI-16-082 RI, V. Perry (GNF-A) to B. Carmichael (Southern Nuclear Operating Company), entitled "Revised GNF Response to NRC RAJ for Hatch 2 Cycle 25 SLMCPR Submittal," dated November 17, 2016. GNF-A proprietary information in Enclosure 1, which is entitled "Revised Response to NRC RAI for Hatch 2 Cycle 25 SLMCPR Submittal," is identified by a dotted underline inside double square brackets. |
| | __ |
| | GNF proprietary information in some tables is identified with double square brackets before and after the object. In each case, the superscript notation (3 J refers to Paragraph (3) of this affidavit, which provides the basis for the proprietary determination. |
| | (3) In making this application for withholding of proprietary information of which it is the owner or licensee, GNF-A relies upon the exemption from disclosure set forth in the Freedom of Information Act ("FOIA"), 5 USC Sec. 552(b)(4), and the Trade Secrets Act, 18 USC Sec. 1905, and NRC regulations 10 CFR 9.17(a)(4), and 2.390(a)(4) for "trade secrets" (Exemption 4). The material for which exemption from disclosure is here sought also qualify under the narrower definition of "trade secret", within the meanings assigned to those terms for purposes of FOIA Exemption 4 in, respectively, Critical Mass Energy Project v. Nuclear Regulatory Commission, 975 F2d 871 (DC Cir. 1992), and Public Citizen Health Research Group v. FDA, 704 F2d 1280 (DC Cir. 1983). (4) Some examples of categories of information which fit into the definition of proprietary information are: a. Information that discloses a process, method, or apparatus, including supporting data and analyses, where prevention of its use by GNF-A's competitors without license from GNF-A constitutes a competitive economic advantage over other companies; |
| | : b. Information which, if used by a competitor, would reduce his expenditure of resources or improve his competitive position in the design, manufacture, shipment, installation, assurance of quality, or licensing of a similar product; c. Information which reveals aspects of past, present, or future GNF-A customer-funded development plans and programs, resulting in potential products to GNF-A; d. Information which discloses patentable subject matter for which it may be desirable to obtain patent protection. |
| | VSP-SNC-HVl-16-082 Rl Enclosure I Affidavit Page 1 of 3 The information sought to be withheld is considered to be proprietary for the reasons set forth in paragraphs (4)a. and (4)b. above. (5) To address 10 CFR 2.390 (b) (4), the information sought to be withheld is being submitted to NRC in confidence. |
| | The information is of a sort customarily held in confidence by A, and is in fact so held. The information sought to be withheld has, to the best of my knowledge and belief, consistently been held in confidence by GNF-A, no public disclosure has been made, and it is not available in public sources. All disclosures to third parties including any required transmittals to NRC, have been made, or must be made, pursuant to regulatory provisions or proprietary agreements which provide for maintenance of the information in confidence. |
| | Its initial designation as proprietary information, and the subsequent steps taken to prevent its unauthorized disclosure, are as set forth in paragraphs (6) and (7) following. |
| | (6) Initial approval of proprietary treatment of a document is made by the manager of the originating component, the person most likely to be acquainted with the value and sensitivity of the information in relation to industry knowledge, or subject to the terms under which it was licensed to GNF-A. (7) The procedure for approval of external release of such a document typically requires review by the staff manager, project manager, principal scientist or other equivalent authority, by the manager of the cognizant marketing function (or his delegate), and by the Legal Operation, for technical content, competitive effect, and determination of the accuracy of the proprietary designation. |
| | Disclosures outside GNF-A are limited to regulatory bodies, customers, and potential customers, and their agents, suppliers, and licensees, and others with a legitimate need for the information, and then only in accordance with appropriate regulatory provisions or proprietary agreements. |
| | (8) The information identified in paragraph (2) is classified as proprietary because it contains details of GNF-A's fuel design and licensing methodology. |
| | The development of this methodology, along with the testing, development and approval was achieved at a significant cost to GNF-A. The development of the fuel design and licensing methodology along with the interpretation and application of the analytical results is derived from an extensive experience database that constitutes a major GNF-A asset. (9) Public disclosure of the information sought to be withheld is likely to cause substantial harm to GNF-A's competitive position and foreclose or reduce the availability of making opportunities. |
| | The information is part of GNF-A's comprehensive BWR safety and technology base, and its commercial value extends beyond the original development cost. The value of the technology base goes beyond the extensive physical database and analytical methodology and includes development of the expertise to determine and apply the appropriate evaluation process. In addition, the technology base includes the value derived from providing analyses done with NRC-approved methods. The research, development, engineering, analytical, and NRC review costs comprise a substantial investment of time and money by GNF-A. VSP-SNC-HVI-16-082 Rl Enclosure 1 Affidavit Page 2 of 3 The precise value of the expertise to devise an evaluation process and apply the correct analytical methodology is difficult to quantify, but it clearly is substantial. |
| | GNF-A's competitive advantage will be lost if its competitors are able to use the results of the GNF-A experience to normalize or verify their own process or if they are able to claim an equivalent understanding by demonstrating that they can arrive at the same or similar conclusions. |
| | The value of this infonnation to GNF-A would be lost if the information were disclosed to the public. Making such information available to competitors without their having been required to undertake a similar expenditure of resources would unfairly provide competitors with a windfall, and deprive GNF-A of the opportunity to exercise its competitive advantage to seek an adequate return on its large investment in developing and obtaining these very valuable analytical tools. I declare under penalty of perjury that the foregoing is true and correct. Executed on this 17th day of November 2016. Brian R. Moore Engineering Manager, Core & Fuel Engineering Global Nuclear Fuel -Americas, LLC 3901 Castle Hayne Road Wilmington, NC 28401 Brian.Moore@ge.com VSP-SNC-HVl-16-082 RI Enclosure I Affidavit Page 3 of 3}} |
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NL-22-0650, Units 1 and 2 - Response to Request for Confirmation of Information Regarding License Amendment Request to Revise the NFPA 805 Fire Protection Program2022-08-19019 August 2022 Units 1 and 2 - Response to Request for Confirmation of Information Regarding License Amendment Request to Revise the NFPA 805 Fire Protection Program NL-22-0590, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Exten2022-08-18018 August 2022 Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Exten NL-21-0862, Emergency License Amendment Request for Technical Specification 3.7.2 Regarding One-Time Extension of Completion Time for Plant Service Water (Psw) Pump Inoperable - RAI Responses2021-09-23023 September 2021 Emergency License Amendment Request for Technical Specification 3.7.2 Regarding One-Time Extension of Completion Time for Plant Service Water (Psw) Pump Inoperable - RAI Responses NL-21-0423, Emergency License Amendment Request for Technical Specification 3.5.1 Re One-Time Extension of Completion Time for 2D RHR Pump - PRA RAI Response2021-04-22022 April 2021 Emergency License Amendment Request for Technical Specification 3.5.1 Re One-Time Extension of Completion Time for 2D RHR Pump - PRA RAI Response NL-21-0415, Emergency License Amendment Request for Technical Specification 3.5.1 Regarding One-Time Extension of Completion Time for 2D RHR Pump - RAI Response2021-04-20020 April 2021 Emergency License Amendment Request for Technical Specification 3.5.1 Regarding One-Time Extension of Completion Time for 2D RHR Pump - RAI Response NL-20-1273, Response to NRC Requests for Information License Amendment Request to Revise the Emergency Plan to Change Staffing and Extend Staff Augmentation Times for2020-11-20020 November 2020 Response to NRC Requests for Information License Amendment Request to Revise the Emergency Plan to Change Staffing and Extend Staff Augmentation Times for NL-20-1000, Responses to NRC Requests for Additional Information to License Amendment Request to Revise the Required Actions of Technical Specifications 3.8.1, AC Sources - Operating, for One-Time Extension of Completion Time2020-08-23023 August 2020 Responses to NRC Requests for Additional Information to License Amendment Request to Revise the Required Actions of Technical Specifications 3.8.1, AC Sources - Operating, for One-Time Extension of Completion Time NL-20-0670, Response to Request for Additional Information (RAI) Regarding Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors2020-06-0202 June 2020 Response to Request for Additional Information (RAI) Regarding Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors NL-20-0640, Response to Request for Additional Information for Exemption Request2020-05-27027 May 2020 Response to Request for Additional Information for Exemption Request NL-19-1248, Revise Technical Specification Requirements During Handling Irradiated Fuel and Core Alterations - TSTF-51, SNC Response to NRC Request for Additional Information2019-10-17017 October 2019 Revise Technical Specification Requirements During Handling Irradiated Fuel and Core Alterations - TSTF-51, SNC Response to NRC Request for Additional Information NL-19-1203, Response to Request to Additional Information Regarding Application to Adopt National Fire Protection Association Standard 8052019-10-0707 October 2019 Response to Request to Additional Information Regarding Application to Adopt National Fire Protection Association Standard 805 NL-19-1028, Response to NRC Request for Additional Information Concerning License Amendment Request for Technical Specifications 3.3.8.1 and 3.8.1 Regarding Unit 1 Degraded Voltage Protection2019-08-28028 August 2019 Response to NRC Request for Additional Information Concerning License Amendment Request for Technical Specifications 3.3.8.1 and 3.8.1 Regarding Unit 1 Degraded Voltage Protection NL-19-0850, Response to Request for Addition Information Regarding Application to Adopt Title 10 of Code of Federal Regulations (CFR) 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and ...2019-07-16016 July 2019 Response to Request for Addition Information Regarding Application to Adopt Title 10 of Code of Federal Regulations (CFR) 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and ... 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NL-19-0009, Supplemental Response to Alternative Request HNP-ISI-ALT-05-042019-01-0808 January 2019 Supplemental Response to Alternative Request HNP-ISI-ALT-05-04 NL-18-1480, Response to NRC Request for Additional Information on Alternative Request (HNP-ISI-ALT-05-04)2018-11-29029 November 2018 Response to NRC Request for Additional Information on Alternative Request (HNP-ISI-ALT-05-04) NL-18-0639, Response to Request for Information Regarding Safety Relief Valve Main Valve Body Testing Extension2018-05-10010 May 2018 Response to Request for Information Regarding Safety Relief Valve Main Valve Body Testing Extension NL-18-0541, Response to Request for Additional Information for Alternative RR-V-11 Regarding Main Steam Safety Valve Testing Requirements2018-04-17017 April 2018 Response to Request for Additional Information for Alternative RR-V-11 Regarding Main Steam Safety Valve Testing Requirements ML18088A0802018-03-29029 March 2018 Response to Request for Additional Information for Alternative RR-V-11 Regarding Main Steam Safety Valve Testing Requirements NL-18-0211, Response to Request for Additional Information Regarding Alternative HNP-181-ALT-05-05 to Adopt Code Case N-7022018-02-20020 February 2018 Response to Request for Additional Information Regarding Alternative HNP-181-ALT-05-05 to Adopt Code Case N-702 NL-18-0085, Response to NRC RAIs Regarding Generic Letter 2016-012018-02-0505 February 2018 Response to NRC RAIs Regarding Generic Letter 2016-01 NL-17-2015, Response to NRC RAIs Regarding Decommissioning Funding Status Reports2018-01-22022 January 2018 Response to NRC RAIs Regarding Decommissioning Funding Status Reports NL-17-1161, License Amendment Request to Revise Technical Specification Section 5.5.12 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies Supplemental Responses to NRC Second Set of Requests for Additional Information2017-07-12012 July 2017 License Amendment Request to Revise Technical Specification Section 5.5.12 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies Supplemental Responses to NRC Second Set of Requests for Additional Information NL-17-0766, License Amendment Request to Revise Technical Specification Section 5.5.12 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies, Responses to NRC Second Set of Requests for Additional Information2017-06-0101 June 2017 License Amendment Request to Revise Technical Specification Section 5.5.12 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies, Responses to NRC Second Set of Requests for Additional Information NL-17-0917, Response to Request for Additional Information Regarding Relief Requests RR-16, RR-17. RR-21 and RR-222017-05-31031 May 2017 Response to Request for Additional Information Regarding Relief Requests RR-16, RR-17. RR-21 and RR-22 NL-17-0063, Response to Verbal Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500, DC Electrical Re-write2017-02-0606 February 2017 Response to Verbal Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500, DC Electrical Re-write NL-16-2494, Units 1 and 2 - Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from ...2016-12-15015 December 2016 Units 1 and 2 - Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from ... NL-16-2457, Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment2016-11-18018 November 2016 Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment NL-16-2109, Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500. DC Electrical Re-write2016-11-16016 November 2016 Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500. DC Electrical Re-write NL-16-1830, Southern Nuclear Operating Company Response to RAI for License Amendment Regarding Emergency Action Level Schemes to Adopt NEI 99-01 Rev 6 and to Modify Radiation Monitors at Farley Nuclear Plant, Part 1B of 1C2016-11-0303 November 2016 Southern Nuclear Operating Company Response to RAI for License Amendment Regarding Emergency Action Level Schemes to Adopt NEI 99-01 Rev 6 and to Modify Radiation Monitors at Farley Nuclear Plant, Part 1B of 1C NL-16-1830, Southern Nuclear Operating Company Response to RAI for License Amendment Regarding Emergency Action Level Schemes to Adopt NEI 99-01 Rev 6 and to Modify Radiation Monitors at Farley Nuclear Plant, Part 1C of 1C2016-11-0303 November 2016 Southern Nuclear Operating Company Response to RAI for License Amendment Regarding Emergency Action Level Schemes to Adopt NEI 99-01 Rev 6 and to Modify Radiation Monitors at Farley Nuclear Plant, Part 1C of 1C ML16314A5052016-11-0303 November 2016 Southern Nuclear Operating Company Response to RAI for License Amendment Regarding Emergency Action Level Schemes to Adopt NEI 99-01 Rev 6 and to Modify Radiation Monitors at Farley Nuclear Plant, Part 1B of 1C NL-16-1169, Response to Request for Additional Information on Technical Specifications - Revision Request to Implement TSTF-500, DC Electrical Re-Write.2016-08-12012 August 2016 Response to Request for Additional Information on Technical Specifications - Revision Request to Implement TSTF-500, DC Electrical Re-Write. NL-16-0628, Southern Nuclear Operating Company Response to Third Request for Additional Information Regarding Standard Emergency Plan: Cover Letter, Attachment 1 and Enclosures 1 - 102016-06-0909 June 2016 Southern Nuclear Operating Company Response to Third Request for Additional Information Regarding Standard Emergency Plan: Cover Letter, Attachment 1 and Enclosures 1 - 10 NL-16-0739, Corrected Response to Second Request for Additional Information Regarding Standard Emergency Plan2016-05-26026 May 2016 Corrected Response to Second Request for Additional Information Regarding Standard Emergency Plan NL-16-0660, Response to Request for Additional Information on Secondary Containment Drawdown Time Technical Specification Amendment Request2016-05-16016 May 2016 Response to Request for Additional Information on Secondary Containment Drawdown Time Technical Specification Amendment Request NL-16-0655, Response to Request for Additional Information on Secondary Containment Drawdown Time Technical Specifications Amendment Request2016-05-0909 May 2016 Response to Request for Additional Information on Secondary Containment Drawdown Time Technical Specifications Amendment Request NL-16-0292, Response to Request for Additional Information on Revision to Secondary Containment Drawdown Time Technical Specifications Amendment Request2016-03-16016 March 2016 Response to Request for Additional Information on Revision to Secondary Containment Drawdown Time Technical Specifications Amendment Request 2024-08-23
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Proprietary and/or Security-Related Information-Withhold Under 10 CFR 2.390 .. &. Southern Nuclear November 18, 2016 Charles R. Pierce Regulatory Affairs Director 40 Inverness Center Parkway Post Ofiice Box 1295 Birmingham, AL 35242 205 992 7872 tel 205 992 7601 fax crpierce@southernco.com Docket Nos.: 50-366 NL-16-2457 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Edwin I. Hatch Nuclear Plant -Unit 2 Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment Ladies and Gentlemen:
By application dated August 29, 2016, Southern Nuclear Operating Company (SNC), the licensee for Edwin I. Hatch Nuclear Plant (HNP) Unit 2, submitted an amendment (ADAMS Accession No. ML 16245A257) that requested changes to Technical Specifications Section 2.1.1.2, "Reactor Core SLs." The amendment proposed revising the cycle-specific safety limit minimum critical power ratio (SLMCPR) for the upcoming Cycle 25. The U. S. Nuclear Regulatory Commission (NRG) issued a request for additional information (RAI) on November 2, 2016. The enclosures to this letter provide the additional information for the NRG staff to complete its safety evaluation of the application.
This letter contains no NRG commitments.
If you have any questions, please contact Ken
Mr. C. R. Pierce states he is the Regulatory Affairs Director for Southern Nuclear Operating Company, is authorized to execute this oath on behalf of Southern Nuclear Operating*
Company and, to the best of .his knowledge and belief, the facts set forth in this letter are true.
C.R. Pierce Director Regulatory Affairs CAP/lac Sworn to and subscribed before me this -1&__ day of No 11 e.M..k Notary Public My commission expires: /D * 'l -7..o( I . . ! , 2016.
U.S. Nuclear Regulatory Commission NL-16-2457 Page 2
Enclosures:
- 1) Response to NRC RAI for Edwin I. Hatch Unit 2, Cycle 25 SLMCPR submittal
-Proprietary Information.
- 2) Response to NRC RAI for Edwin I. Hatch, Unit 2, Cycle 25 SLMCPR submittal
-Non-Proprietary Information.
- 3) Affidavit for Enclosure
- 1. cc: Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President
& CEO Mr. D. G. Bost, Executive Vice President
& Chief Nuclear Officer Mr. D. R. Vineyard, Vice President
-Hatch Mr. M. D. Meier, Vice President
-Regulatory Affairs Mr. D. R. Madison, Vice President
-Fleet Operations Mr. B. J. Adams, Vice President
-Engineering Mr. G. L. Johnson, Regulatory Affairs Manager -Hatch RType: CHA02.004 U.S. Nuclear Regulatory Commission Ms. C. Haney, Regional Administrator Mr. M. D. Orenak, NRR Project Manager -Hatch Mr. D. H. Hardage, Senior Resident Inspector
-Hatch State of Georgia Mr. R.E. Dunn, Director -Environmental Protection Division Edwin I. Hatch Nuclear Plant -Unit 2 Supplemental Information Regarding Proposed Safety Limit Minimum Critical Power Ratio (SLMCPR) License Amendment Enclosures ENCLOSURE2 VSP-SNC-HVI-16-082 RI Revised Response to NRC RAI for Hatch 2 Cycle 25 SLMCPR Submittal Non-Proprietary Information
-Class I (Public) INFORMATION NOTICE This is a non-proprietary version of VSP-SNC-HVl 082 RI Enclosure 1, which has the proprietary information removed. Portions of the document that have been removed are indicated by white space inside an open and closed bracket as shown here [[ ]].
VSP-NPP-HVl-16-082 Rl Enclosure 2 *RAil Non-Proprietary Information
-Class I (Public) Page I of J. The SLM CPR shall have appropriate margin to reasonably protect the integrity of fuel to meet the requirements of Title 10 of the Code of Federal Regulations, Part 50, Appendix A, "General Design Criteria for Nuclear Power Plants, Criterion 10, "Reactor Design." Table 3 of Global Nuclear Fuel-Americas, LLC report GNF-003N7688-Rl-P, "GNF Additional Information Regarding the Requested Changes to the Technical Specification SLMCPR, Hatch 2 Cycle 25," (non-public, proprietary) showed TS single-loop operation SLMCPR to be 1.13, which is rounded from the [[ ]]. Please provide justification for the apparent non-conservative rounding from [[ ]] to 1.13, or demonstrate that use of this rounding convention is not significant with respect to the margin of safety. GNF Response Per the approved methodology (Reference 1 ), limiting rod patterns used in the determination of the SLMCPR are sufficiently conservative to ensure that the use of standard rounding practices, to two places past the decimal point, is not significant with respect to the margin of safety. The degree of rounding, from [[ ]] to 1.13, is therefore less than the 0.005 level of significance established as part of the approved methodology.
Furthermore, the Appendix C RAJ 17 response (page C-48) of Reference 2 discusses the 0.005 level of significance threshold in the context of the inherent variability in the Monte Carlo process. Quoted from the RAI response; "This threshold was chosen to correspond to the inherent variability in the Monte Carlo process for determining the safety limit. It is also consistent with the accepted practice of rounding and reporting SLMCPR values to two places past the decimal point. By definition, a change in a statepoint condition that goes into the evaluation of a SLMCPR is not significant unless it results in an increase in the calculated SLMCPR by +0.005." References
- 1. GE Nuclear Energy, "Methodology and Uncertainties for Safety Limit MCPR Evaluations," NEDC-32601P-A, Revision 0, August 1999. 2. GE Hitachi Nuclear Energy, "Applicability of GE Methods to Expanded Operating Domains," NEDC-33173P-A, Revision 4, November 2012.
ENCLOSURE3 VSP-SNC-HVI-16-082 RI Affidavit for Enclosure 1
Global Nuclear Fuel -Americas AFFIDAVIT I, Brian R. Moore, state as follows: (1) I am Engineering Manager, Core & Fuel Engineering, Global Nuclear Fuel -Americas, LLC (GNF-A), and have been, delegated the function of reviewing the information described in paragraph (2) which is sought to be withheld, and have been authorized to apply for its withholding.
(2) The information sought to be withheld is contained in Enclosure 1 of GNF's letter, VSP-SNC-HVI-16-082 RI, V. Perry (GNF-A) to B. Carmichael (Southern Nuclear Operating Company), entitled "Revised GNF Response to NRC RAJ for Hatch 2 Cycle 25 SLMCPR Submittal," dated November 17, 2016. GNF-A proprietary information in Enclosure 1, which is entitled "Revised Response to NRC RAI for Hatch 2 Cycle 25 SLMCPR Submittal," is identified by a dotted underline inside double square brackets.
__
GNF proprietary information in some tables is identified with double square brackets before and after the object. In each case, the superscript notation (3 J refers to Paragraph (3) of this affidavit, which provides the basis for the proprietary determination.
(3) In making this application for withholding of proprietary information of which it is the owner or licensee, GNF-A relies upon the exemption from disclosure set forth in the Freedom of Information Act ("FOIA"), 5 USC Sec. 552(b)(4), and the Trade Secrets Act, 18 USC Sec. 1905, and NRC regulations 10 CFR 9.17(a)(4), and 2.390(a)(4) for "trade secrets" (Exemption 4). The material for which exemption from disclosure is here sought also qualify under the narrower definition of "trade secret", within the meanings assigned to those terms for purposes of FOIA Exemption 4 in, respectively, Critical Mass Energy Project v. Nuclear Regulatory Commission, 975 F2d 871 (DC Cir. 1992), and Public Citizen Health Research Group v. FDA, 704 F2d 1280 (DC Cir. 1983). (4) Some examples of categories of information which fit into the definition of proprietary information are: a. Information that discloses a process, method, or apparatus, including supporting data and analyses, where prevention of its use by GNF-A's competitors without license from GNF-A constitutes a competitive economic advantage over other companies;
- b. Information which, if used by a competitor, would reduce his expenditure of resources or improve his competitive position in the design, manufacture, shipment, installation, assurance of quality, or licensing of a similar product; c. Information which reveals aspects of past, present, or future GNF-A customer-funded development plans and programs, resulting in potential products to GNF-A; d. Information which discloses patentable subject matter for which it may be desirable to obtain patent protection.
VSP-SNC-HVl-16-082 Rl Enclosure I Affidavit Page 1 of 3 The information sought to be withheld is considered to be proprietary for the reasons set forth in paragraphs (4)a. and (4)b. above. (5) To address 10 CFR 2.390 (b) (4), the information sought to be withheld is being submitted to NRC in confidence.
The information is of a sort customarily held in confidence by A, and is in fact so held. The information sought to be withheld has, to the best of my knowledge and belief, consistently been held in confidence by GNF-A, no public disclosure has been made, and it is not available in public sources. All disclosures to third parties including any required transmittals to NRC, have been made, or must be made, pursuant to regulatory provisions or proprietary agreements which provide for maintenance of the information in confidence.
Its initial designation as proprietary information, and the subsequent steps taken to prevent its unauthorized disclosure, are as set forth in paragraphs (6) and (7) following.
(6) Initial approval of proprietary treatment of a document is made by the manager of the originating component, the person most likely to be acquainted with the value and sensitivity of the information in relation to industry knowledge, or subject to the terms under which it was licensed to GNF-A. (7) The procedure for approval of external release of such a document typically requires review by the staff manager, project manager, principal scientist or other equivalent authority, by the manager of the cognizant marketing function (or his delegate), and by the Legal Operation, for technical content, competitive effect, and determination of the accuracy of the proprietary designation.
Disclosures outside GNF-A are limited to regulatory bodies, customers, and potential customers, and their agents, suppliers, and licensees, and others with a legitimate need for the information, and then only in accordance with appropriate regulatory provisions or proprietary agreements.
(8) The information identified in paragraph (2) is classified as proprietary because it contains details of GNF-A's fuel design and licensing methodology.
The development of this methodology, along with the testing, development and approval was achieved at a significant cost to GNF-A. The development of the fuel design and licensing methodology along with the interpretation and application of the analytical results is derived from an extensive experience database that constitutes a major GNF-A asset. (9) Public disclosure of the information sought to be withheld is likely to cause substantial harm to GNF-A's competitive position and foreclose or reduce the availability of making opportunities.
The information is part of GNF-A's comprehensive BWR safety and technology base, and its commercial value extends beyond the original development cost. The value of the technology base goes beyond the extensive physical database and analytical methodology and includes development of the expertise to determine and apply the appropriate evaluation process. In addition, the technology base includes the value derived from providing analyses done with NRC-approved methods. The research, development, engineering, analytical, and NRC review costs comprise a substantial investment of time and money by GNF-A. VSP-SNC-HVI-16-082 Rl Enclosure 1 Affidavit Page 2 of 3 The precise value of the expertise to devise an evaluation process and apply the correct analytical methodology is difficult to quantify, but it clearly is substantial.
GNF-A's competitive advantage will be lost if its competitors are able to use the results of the GNF-A experience to normalize or verify their own process or if they are able to claim an equivalent understanding by demonstrating that they can arrive at the same or similar conclusions.
The value of this infonnation to GNF-A would be lost if the information were disclosed to the public. Making such information available to competitors without their having been required to undertake a similar expenditure of resources would unfairly provide competitors with a windfall, and deprive GNF-A of the opportunity to exercise its competitive advantage to seek an adequate return on its large investment in developing and obtaining these very valuable analytical tools. I declare under penalty of perjury that the foregoing is true and correct. Executed on this 17th day of November 2016. Brian R. Moore Engineering Manager, Core & Fuel Engineering Global Nuclear Fuel -Americas, LLC 3901 Castle Hayne Road Wilmington, NC 28401 Brian.Moore@ge.com VSP-SNC-HVl-16-082 RI Enclosure I Affidavit Page 3 of 3