Letter Sequence Other |
---|
|
|
MONTHYEARML0820011442008-08-21021 August 2008 G20080399/EDATS: OEDO-2008-0448 - William Shack Ltr Susquehanna Steam Electric Station Units 1 and 2 Extended Power Uprate Project stage: Other 2008-08-21
[Table View] |
|
---|
Category:Letter
MONTHYEARPLA-8141, Response to Request for Additional Information Regarding Relief Request 1RR06, PLA-81412024-09-18018 September 2024 Response to Request for Additional Information Regarding Relief Request 1RR06, PLA-8141 PLA-8142, Registration for the Use of Spent Fuel Storage Casks 306, 309, and 307 - PLA-81422024-09-18018 September 2024 Registration for the Use of Spent Fuel Storage Casks 306, 309, and 307 - PLA-8142 ML24260A2312024-09-17017 September 2024 Senior Reactor and Reactor Operator Initial License Examinations PLA-8131, B Diesel Generator Inoperable Due to Failed Excitation System Linear Reactor2024-09-16016 September 2024 B Diesel Generator Inoperable Due to Failed Excitation System Linear Reactor ML24255A8642024-09-0606 September 2024 Rscc Wire & Cable LLC Dba Marmon Industrial Energy & Infrastructure - Part 21 Retraction of Final Notification ML24249A1362024-09-0404 September 2024 EN 57304 - Westinghouse Electric Company, LLC, Final Report - No Embedded Files. Notification of the Potential Existence of Defects Pursuant to 10 CFR Part 21 ML24233A2192024-09-0303 September 2024 – Authorized Alternative to Requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code IR 05000387/20240052024-08-29029 August 2024 Updated Inspection Plan for Susquehanna Steam Electric Station, Units 1 and 2 (Report 05000387/2024005 and 05000388/2024005) PLA-8139, Manual Reactor Scram Due to Degraded Main Condenser Vacuum2024-08-26026 August 2024 Manual Reactor Scram Due to Degraded Main Condenser Vacuum PLA-8132, Main Steam Isolation Valve Leakage Due to Valve Body Seat Wear2024-08-21021 August 2024 Main Steam Isolation Valve Leakage Due to Valve Body Seat Wear IR 05000387/20240022024-08-12012 August 2024 Integrated Inspection Report 05000387/2024002 and 05000388/2024002 ML24208A0962024-07-25025 July 2024 57243-EN 57243 - Rssc Wire & Cable LLC, Dba Marmon - Part 21 Notification PLA-8117, 23rd Refueling Outage Owners Activity Report (PLA-8117)2024-07-23023 July 2024 23rd Refueling Outage Owners Activity Report (PLA-8117) ML24197A0982024-07-15015 July 2024 Request for Information for a Biennial Problem Identification and Resolution Inspection; Inspection Report 05000387/2024010 and 05000388/2024010 ML24127A2262024-05-29029 May 2024 Issuance of Amendment Nos. 288 and 272 Adoption of TSTF-563 PLA-8126, Response to Request for Confirmation of Information Regarding Relief Request 1RR062024-05-29029 May 2024 Response to Request for Confirmation of Information Regarding Relief Request 1RR06 PLA-8122, Annual Radiological Environmental Operating Report (PLA-8122)2024-05-28028 May 2024 Annual Radiological Environmental Operating Report (PLA-8122) PLA-8115, Relief Request IRR06 One Time Extension to the Fourth 10-Year Inservice Testing Program Interval (PLA-8115)2024-05-23023 May 2024 Relief Request IRR06 One Time Extension to the Fourth 10-Year Inservice Testing Program Interval (PLA-8115) IR 05000387/20240012024-05-13013 May 2024 Integrated Inspection Report 05000387/2024001 and 05000388/2024001 IR 05000387/20244042024-05-0707 May 2024 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000387/2024404 and 05000388/2024404 ML24082A1372024-04-22022 April 2024 Issuance of Amendment Nos. 287 and 271 Adoption of TSTF-568, Revision 2 and Associated Technical Specification Changes PLA-8095, 2023 Annual Radiological Environmental Operating Report (PLA-8095)2024-04-22022 April 2024 2023 Annual Radiological Environmental Operating Report (PLA-8095) PLA-8094, Radioactive Effluent Release Report and Offsite Dose Calculation Manual PLA-80942024-04-22022 April 2024 Radioactive Effluent Release Report and Offsite Dose Calculation Manual PLA-8094 PLA-8101, Re 2023 Annual Report of Radiation Exposure2024-04-22022 April 2024 Re 2023 Annual Report of Radiation Exposure PLA-8102, Annual Environmental Operating Report (Nonradiological) PLA-81022024-04-11011 April 2024 Annual Environmental Operating Report (Nonradiological) PLA-8102 PLA-8113, Response to Request for Additional Information Regarding Relief Request 4RR-11 (PLA-8113)2024-04-11011 April 2024 Response to Request for Additional Information Regarding Relief Request 4RR-11 (PLA-8113) PLA-8112, Relief Request 4RR-11 Relief from End of Interval Boundary Leakage Test PLA-81122024-04-0909 April 2024 Relief Request 4RR-11 Relief from End of Interval Boundary Leakage Test PLA-8112 PLA-8110, Submittal of Unit 1 Cycle 24 Core Operating License Report (Pla 8110)2024-04-0404 April 2024 Submittal of Unit 1 Cycle 24 Core Operating License Report (Pla 8110) PLA-8100, Property Insurance Program (PLA-8100)2024-04-0101 April 2024 Property Insurance Program (PLA-8100) ML24092A4022024-04-0101 April 2024 Annual Financial Report (PLA-8098) PLA-8109, Supplement to Request for Exemption from Certain Requirements of 10 CR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance (PLA-8109)2024-03-21021 March 2024 Supplement to Request for Exemption from Certain Requirements of 10 CR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance (PLA-8109) ML24067A2512024-03-19019 March 2024 Authorized Alternative to Requirements of the ASME Code PLA-8107, Request for Exemption from Certain Requirements of 10 CFR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance2024-03-19019 March 2024 Request for Exemption from Certain Requirements of 10 CFR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance ML24044A2532024-03-14014 March 2024 Associated Independent Spent Fuel Storage Installation – Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0077 (Security Notifications, Reports, and Recordkeeping & Suspicious Activity Reporting)) IR 05000387/20240112024-02-29029 February 2024 Commercial Grade Dedication Inspection Report 05000387/2024011 and 05000388/2024011 IR 05000387/20230062024-02-28028 February 2024 Annual Assessment Letter for Susquehanna Steam Electric Station, Units 1 and 2 (Reports 05000387/2023006 and 05000388/2023006) ML24039A1882024-02-27027 February 2024 Issuance of Amendment Nos. 286 and 270 Changes to Technical Specifications for Control Rods ML24037A3072024-02-22022 February 2024 Summary of Regulatory Audit in Support of Relief Request 5RR-02 PLA-8099, Proof of Financial Protection and Guarantee of Payment of Deferred Premiums (PLA-8099)2024-02-13013 February 2024 Proof of Financial Protection and Guarantee of Payment of Deferred Premiums (PLA-8099) IR 05000387/20230042024-02-0707 February 2024 Integrated Inspection Report 05000387/2023004 and 05000388/2023004 PLA-8096, Response to Request for Additional Information Regarding Proposed Relief Request for the Fifth 10-Year Inservice Test Program Interval2024-01-0404 January 2024 Response to Request for Additional Information Regarding Proposed Relief Request for the Fifth 10-Year Inservice Test Program Interval PLA-8077, Emergency Plan Revision 67 (PLA-8077)2023-12-27027 December 2023 Emergency Plan Revision 67 (PLA-8077) IR 05000387/20230102023-12-11011 December 2023 Fire Protection Team Inspection Report 05000387/2023010 and 05000388/2023010 PLA-8088, Request for Exemption from Enhanced Weapons, Firearms Background Checks and Security Event Notifications Implementation (PLA-8088)2023-12-0505 December 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks and Security Event Notifications Implementation (PLA-8088) PLA-8089, Submittal of Revision to Inservice Testing Program Plan2023-12-0505 December 2023 Submittal of Revision to Inservice Testing Program Plan PLA-8084, Application to Revise Technical Specifications to Adopt TSTF-568, Revise Applicability of BWR TS 3.6.2.5 and TS 3.6.3.22023-11-29029 November 2023 Application to Revise Technical Specifications to Adopt TSTF-568, Revise Applicability of BWR TS 3.6.2.5 and TS 3.6.3.2 ML23345A0682023-11-28028 November 2023 Technical Specification Bases, Manual PLA-8091, Response to Request for Additional Information Regarding Proposed Relief Request for the Fifth 10-Year Inseervice Inspection Interval (PLA-8091)2023-11-0808 November 2023 Response to Request for Additional Information Regarding Proposed Relief Request for the Fifth 10-Year Inseervice Inspection Interval (PLA-8091) IR 05000387/20230032023-11-0303 November 2023 Integrated Inspection Report 05000387/2023003 and 05000388/2023003 PLA-8082, Proposed Amendment to Licenses NPF-14 and NPF-22: Application to Revise Technical Specifications to Adopt TSTF-563, Revise Instrument Testing Definitions to Incorporate the Surveillance Frequency Control Program2023-11-0202 November 2023 Proposed Amendment to Licenses NPF-14 and NPF-22: Application to Revise Technical Specifications to Adopt TSTF-563, Revise Instrument Testing Definitions to Incorporate the Surveillance Frequency Control Program 2024-09-06
[Table view] |
Text
August 21, 2008 Dr. William J. Shack, Chairman Advisory Committee on Reactor Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2, EXTENDED POWER UPRATE
Dear Dr. Shack:
On October 9 and 10, and November 14, 2007, the U.S. Nuclear Regulatory Commission (NRC) staff presented its review of the Susquehanna Steam Electric Station, Units 1 and 2 (SSES) extended power uprate (EPU) application to the Advisory Committee on Reactor Safeguards (ACRS) subcommittee on power uprates. During the 547th and 548th meetings of the ACRS, on November 1 and December 7, 2007, respectively, the staff discussed the EPU with the ACRS full committee. By letter dated December 20, 2007, the ACRS forwarded its conclusions and recommendations on the staffs review of the SSES EPU application to Chairman Klein. The ACRS recommended that an appropriate margin (penalty) should be added to the Operating Limit Minimum Critical Power Ratio (OLMCPR) as an interim measure to account for uncertainties in the void fraction correlation and the lack of data for its validation at a void fraction above 90 percent. The staff provided a response to the ACRS in a letter dated January 17, 2008, providing arguments as to why a penalty was not required. The ACRS responded to the January 17, 2008, letter in a letter dated June 3, 2008. The letter states that the ACRS is not persuaded by the staffs arguments in regards to Recommendation 2. The ACRS has also provided analyses conducted by the Committees consultants.
To address the continuing ACRS concerns, the NRR staff requested that the Office of Research (RES) conduct an independent peer review of the SSES EPU safety evaluation report with the benefit of the Committees consultants analyses provided. The RES review and recommendations are documented in a memorandum from F. Eltawila to W. Ruland, Independent Review of the Susquehanna Steam Electric Station Extended Power Update Safety Evaluation Report, dated July 3, 2008, (ADAMS Accession No. ML081980578).
The RES peer review concludes that if the ACRS consultants' report results were the only available information then it would not be unreasonable to conclude that a penalty is required.
The RES peer review, however, also finds that the 20% void reactivity coefficient uncertainty assumed in the analysis may be too large. Therefore, RES recommends that another analysis be performed. NRR agrees with the RES peer review and, in response to the RES peer review open item, provided the staffs calculation of the void reactivity coefficient uncertainty as being approximately 4%, which is documented in the response to the peer review. A lower uncertainty would result in a reduction in the calculated uncertainty in the transient CPR. NRR provided its response to the RES recommendations and open item in a memorandum from W. Ruland to F.
Eltawila, Reply to the Independent Review of the Susquehanna Steam Electric Station Extended Power Update Safety Evaluation Report, dated July 17, 2008, (ADAMS Accession No. ML081980004). NRR has adopted all of the SSES specific recommendations.
W. Shack The NRR staff has requested that additional detailed sensitivity analyses be performed by AREVA to quantify the impact of the void fraction uncertainties on the operating limit. These analyses are being performed consistent with the guidance provided in Reference 3 of the ACRS letter dated June 3, 2008. The staff will provide these analyses to the ACRS once they are complete. In the interim, the staff remains reasonably assured that the safety margins at SSES are adequate. In a memorandum to the Executive Director, ACRS, (ADAMS Accession No. ML082000981) the staff presents the detailed bases for its reasonable assurance finding and concludes that an interim penalty to the SSES 1 and 2 operating limit minimum critical power ratio is not required.
The NRC staff appreciates the Committees insights concerning the SSES EPU amendment review. The NRC staff will address any future correspondence regarding the staff review of the SSES EPU license amendment.
In the interest of expeditiously responding to the Committees concerns regarding the subject matter of your June 3, 2008, letter, should the Committee require additional information or clarification, please direct these types of inquiries directly to the Division of Safety Systems in NRR.
Sincerely,
/RA Bruce Mallett for/
R. W. Borchardt Executive Director for Operations cc: Chairman Klein Commissioner Jaczko Commissioner Lyons Commissioner Svinicki SECY
W. Shack The NRR staff has requested that additional detailed sensitivity analyses be performed by AREVA to quantify the impact of the void fraction uncertainties on the operating limit. These analyses are being performed consistent with the guidance provided in Reference 3 of the ACRS letter dated June 3, 2008. The staff will provide these analyses to the ACRS once they are complete. In the interim, the staff remains reasonably assured that the safety margins at SSES are adequate. In a memorandum to the Executive Director, ACRS, (ADAMS Accession No. ML082000981) the staff presents the detailed bases for its reasonable assurance finding and concludes that an interim penalty to the SSES 1 and 2 operating limit minimum critical power ratio is not required.
The NRC staff appreciates the Committees insights concerning the SSES EPU amendment review. The NRC staff will address any future correspondence regarding the staff review of the SSES EPU license amendment.
In the interest of expeditiously responding to the Committees concerns regarding the subject matter of your June 3, 2008, letter, should the Committee require additional information or clarification, please direct these types of inquiries directly to the Division of Safety Systems in NRR.
Sincerely,
/RA Bruce Mallett for/
R. W. Borchardt Executive Director for Operations cc: Chairman Klein Commissioner Jaczko Commissioner Lyons Commissioner Svinicki SECY DISTRIBUTION: G20080399/EDATS: OEDO-2008-0448 PUBLIC LPLI-1 RF RidsNrrDorl RidsEdoMailCenter RidsNrrDorlLpli-1 RidsNrrOd RidsNrrDss RidsNrrAdro RidsNrrDssSrxb RidsNrrAdes RidsNrrDssSnpb RidsOgcRp RidsNrrDpr RidsOpaMailCenter RidsNrrDprPgcb RidsRgn1MailCenter RidsNrrPMBVaidya RidsOgcMailCenter RidsNrrLASLittle RidsOcaMailCenter PYarsky RidsSecyMailCenter RidsAcnwMailCenter RidsNrrMailCenter Package: ML082030171 Incoming: ML081640099 Response: ML082001144 *Concurred via email OFFICE NRR/DSS/SNPB TECH ED
- SRXB/BC DSS/DD NAME PYarsky CHsu GCranston WRuland DATE 07/21/08 07/19/08 07/21/08 07/21/08 OFFICE NRR/OD EDO NAME ELeeds RBorchardt (JWiggins for) (BMallett for)
DATE 07/29/08 08/21/08 OFFICIAL RECORD COPY