|
---|
Category:Letter
MONTHYEARIR 05000346/20243012024-02-0202 February 2024 NRC Initial License Examination Report 05000346/2024301 IR 05000346/20230042024-01-31031 January 2024 Integrated Inspection Report 05000346/2023004 ML23313A1352024-01-17017 January 2024 Authorization and Safety Evaluation for Alternative Request RP 5 for the Fifth 10 Year Interval Inservice Testing Program ML23353A1192023-12-19019 December 2023 Operator Licensing Examination Approval Davis Besse Nuclear Power Station, January 2024 L-23-260, Corrections to the 2022 Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station2023-12-0707 December 2023 Corrections to the 2022 Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station L-23-243, Independent Spent Fuel Storage Installation - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-12-0606 December 2023 Independent Spent Fuel Storage Installation - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23338A3172023-12-0606 December 2023 Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000346/2024001 IR 05000346/20234032023-11-0202 November 2023 Security Baseline Inspection Report 05000346/2023403 ML23293A0612023-11-0101 November 2023 Letter to the Honorable Marcy Kaptur, from Chair Hanson Responds to Letter Regarding Follow Up on Concerns Raised by Union Representatives During the June Visit to the Davis-Besse Nuclear Power Plant L-23-215, Changes to Emergency Plan2023-10-19019 October 2023 Changes to Emergency Plan ML23237B4222023-09-28028 September 2023 Energy Harbor Nuclear Corp. - Vistra Operations Company LLC - Letter Regarding Order Approving Transfer of Licenses and Draft Conforming License Amendments ML23269A1242023-09-27027 September 2023 Request for Withholding Information from Public Disclosure IR 05000346/20234012023-09-13013 September 2023 Security Baseline Inspection Report 05000346/2023401 (Public) L-23-205, Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-09-12012 September 2023 Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments L-23-172, Quality Assurance Program Manual2023-08-31031 August 2023 Quality Assurance Program Manual IR 05000346/20230112023-08-30030 August 2023 Biennial Problem Identification and Resolution Inspection Report 05000346/2023011 ML23129A1722023-08-25025 August 2023 Request for Withholding Information from Public Disclosure for Beaver Valley Power Station, Units 1 and 2; Davis Besse Nuclear Power Station, Unit 1; and Perry Nuclear Power Plant, Unit 1 IR 05000346/20230052023-08-24024 August 2023 Updated Inspection Plan for Davis-Besse Nuclear Power Station (Report 05000346/2023005) L-23-188, Energy Harbor Nuclear Corp., Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-08-0707 August 2023 Energy Harbor Nuclear Corp., Supplement to Application for Order Consenting to Transfer of Licenses and Conforming License Amendments IR 05000346/20230502023-08-0303 August 2023 Special Inspection Report 05000346/2023050 IR 05000346/20230902023-08-0101 August 2023 EA-23-002 Davis-Besse Nuclear Power Station - NRC Inspection Report No. 05000346/2023090 (Public) ML23178A2742023-08-0101 August 2023 Letter to the Honorable Marcy Kaptur from Chair Hanson Responds to Letter Regarding the License Transfer Application for the Davis-Besse Nuclear Power Station L-23-175, Submittal of Fifth Ten Year Inservice Testing Program2023-08-0101 August 2023 Submittal of Fifth Ten Year Inservice Testing Program IR 05000346/20230022023-07-27027 July 2023 Integrated Inspection Report 05000346/2023002 ML23193A7842023-07-13013 July 2023 Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection 05000346/2023402 ML23178A2422023-06-28028 June 2023 Reassignment of the U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch III ML23160A2342023-06-13013 June 2023 Confirmation of Initial License Examination L-23-034, 2022 Annual 10 CFR 50.46 Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models2023-06-13013 June 2023 2022 Annual 10 CFR 50.46 Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models IR 05000346/20235012023-06-13013 June 2023 Emergency Preparedness Biennial Exercise Inspection Report 05000346/2023501 L-23-135, Response to Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-05-31031 May 2023 Response to Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations L-23-065, Annual Financial Report2023-05-22022 May 2023 Annual Financial Report ML23124A1742023-05-17017 May 2023 Energy Harbor Fleet Vistra License Transfer - Request for Withholding Information from Public Disclosure for Commance Peak Plant, Units 1 & 2, Beaver Valley Station, Units 1 & 2, Davis Besse Station, Unit 1 and Perry Plant, Unit 1 ML23129A0112023-05-16016 May 2023 Notice of Consideration of Approval of Indirect and Direct License Transfer for Comanche Peak Plant, Units 1 & 2, Beaver Valley Station, Units 1 & 2, Davis Besse Station, Unit 1 and Perry Plant, Unit 1 (EPID L-2023-LLM-0000) (Letter) ML23131A2732023-05-15015 May 2023 Notification of NRC Supplemental Inspection 95001 and Request for Information L-23-101, Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station - 20222023-05-12012 May 2023 Combined Annual Radiological Environmental Operating Report and Radioactive Effluent Release Report for the Davis-Besse Nuclear Power Station - 2022 L-23-131, Readiness for Resumption of NRC Supplemental Inspection2023-05-12012 May 2023 Readiness for Resumption of NRC Supplemental Inspection IR 05000346/20230102023-05-0909 May 2023 Commercial Grade Dedication Inspection Report 05000346/2023010 ML23123A1272023-05-0303 May 2023 Information Request to Support Upcoming Problem Identification and Resolution Inspection at Davis-Besse Nuclear Power Station IR 05000346/20230012023-05-0101 May 2023 Integrated Inspection Report 05000346/2023001 and 07200014/2022001 L-23-092, Occupational Radiation Exposure Report for Year 20222023-04-27027 April 2023 Occupational Radiation Exposure Report for Year 2022 ML23111A1972023-04-26026 April 2023 Information Meeting with Question and Answer Session to Discuss NRC 2022 End-of-Cycle Plant Performance Assessment of Davis-Besse Nuclear Power Plant Station ML23114A1062023-04-25025 April 2023 Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection CP-202300181, ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, ISFSI, Corrected Affidavit for Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-04-20020 April 2023 ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, ISFSI, Corrected Affidavit for Application for Order Consenting to Transfer of Licenses and Conforming License Amendments CP-202300157, ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, and ISFSI, Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-04-14014 April 2023 ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, and ISFSI, Application for Order Consenting to Transfer of Licenses and Conforming License Amendments ML23096A1382023-04-11011 April 2023 Review of the Spring 2022 Steam Generator Tube Inspection Report L-23-061, Submittal of the Decommissioning Funding Status Reports2023-03-31031 March 2023 Submittal of the Decommissioning Funding Status Reports L-23-037, and Perry Nuclear Power Plant - Independent Spent Fuel Storage Installation Changes, Tests, and Experiments2023-03-29029 March 2023 and Perry Nuclear Power Plant - Independent Spent Fuel Storage Installation Changes, Tests, and Experiments L-23-066, Annual Notification of Property Insurance Coverage2023-03-21021 March 2023 Annual Notification of Property Insurance Coverage ML23066A2892023-03-14014 March 2023 Request for Threshold Determination Under 10 CFR 50.80 and 10 CFR 72.50 for an Amendment to the Voting Agreement ML23066A2592023-03-14014 March 2023 Request for Withholding Information from Public Disclosure for Beaver Valley Power Station, Units 1 and 2, Davis Besse Nuclear Power Station, Unit 1, and Perry Nuclear Power Plant, Unit 1 2024-02-02
[Table view] |
Text
TM FirstEnergy Nuclear Operating Company Brian D. Boles Vice President, Nuclear August 12, 2015 L-15-250 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
Davis-Besse Nuclear Power Station, Unit No. 1 Docket No. 50-346, License No. NPF-3 5501 North State Route 2 Oak Harbor, Ohio 43449 419-321-7676 Fax: 419-321-7582 Deviation from MRP-227 A. "Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines" In accordance with Nuclear Energy Institute (NEI) 03-08, "Guideline for the Management of Materials Issues," FirstEnergy Nuclear Operating Company (FENOC) is informing the Nuclear Regulatory Commission (NRC) of a deviation from MRP-227 A. The following is a of the technical justification for the deviation from MRP-227 A inspection requirements for primary and expansion reactor internals components listed in Table 4-1, "B&W Plants Primary Components," and Table 4-4, "B&W Plants Expansion Components." This information is being provided by FE NOC for the Davis-Besse Nuclear Power Station (DBNPS), Unit. No. 1 and is for information only. FENOC is not requesting any action from the NRC staff. Specifically, the deviation addresses an MPR-227 A "needed" requirement because MRP-227A Tables 4-1 and 4-4 cannot be implemented as written. MRP-227A, Table 4-1, for primary component, Lower Grid Assembly, Alloy X-750 dowel-to-guide block welds is no longer applicable to DBNPS because the block was modified after hot functional testing and the X-750 material and associated nickel based weld were removed and replaced with stainless steel materials.
The expansion link for the Alloy X-750 dowel-to-guide block welds is the Alloy X-750 dowel locking welds to the upper and lower grid fuel assembly support pads. Table 4-4 states that the upper grid assembly, X-750 dowel-to-upper-grid fuel assembly support pad welds applies to all plants with the exception of DBNPS. However, after review of the fabrication records, Alloy X-750 dowel-to-upper grid fuel assembly support pads were transferred to the DBNPS contract and installed in the plant.
Davis-Besse Nuclear Power Station, Unit No. 1 L-15-250 Page 2 of 3 The deviation replaces the MRP-227 A, Table 4-1, Primary Component, Lower Grid Assembly, Alloy X-750 dowel-to-guide block welds with the current MRP-227 A, Table 4-4, Expansion Component, Lower Grid Assembly, lower grid fuel assembly Alloy X-750 dowel-to-lower grid fuel assembly support pad welds. The Alloy X-750 upper grid fuel assembly support pads will become the linked expansion component for the Lower Grid Assembly, lower grid fuel assembly support. The deviation will add two new table rows applicable to DBNPS as follows. T bl 4 1 B&W Pl t P . a e -s nmary c t omponen s Item Applicability Effect Expansion Examination Examination (Mechanism)
Link Method/Frequency Coverage (Note 2) (Note 2) Lower Grid Davis-Cracking Alloy X-750 Initial visual (VT-3) Accessible Assembly Besse (SCC), dowel-to-examination no later surfaces of Alloy X-750 including the upper than two 100% of the dowel-to-detection of grid fuel refueling outages dowel lower grid separated or assembly from the welds. fuel missing support pad beginning of the assembly locking welds license support welds, or renewal period. pad welds missing Subsequent dowels. examinations on the 10-year ISi interval.
T bl 4 4 B&W Pl t E a e -ans xpans1on c t omponen s Item Applicability Effect Primary Examination Examination (Mechanism)
Link Method/Frequency Coverage (Note 1) (Note 1) Upper Grid Davis-Cracking Alloy X-750 Visual (VT-3) Accessible Assembly Besse (SCC), dowel-to-examination.
surfaces of Alloy X-750 including the lower Subsequent 100% of the dowel-to-detection of grid fuel examinations on dowel upper grid separated or assembly the 1 0-year IS I welds fuel missing support pad interval unless assembly locking welds an applicanUlicensee support welds, or provides pad welds missing an evaluation for dowels NRC staff approval that justifies a longer interval between inspections.
Davis-Besse Nuclear Power Station, Unit No. 1 L-15-250 Page 3 of 3 By letter dated July 20, 2015 the Electric Power Research Institute Materials Reliability Program has been notified of the aforementioned needed revision to MRP-227 to address the DBNPS as-built configuration.
The duration of this deviation is from April 22, 2015 until MRP-227 is revised to include the as-built configuration for DBNPS. Because the alternate actions meet the objective and level of conservatism of MRP-227 A, there is no postulated impact to safety. There are no regulatory commitments contained in this letter. If there are any questions or if additional information is required, please contact Mr. Thomas A. Lentz, Fleet Licensing at (330) 315-6810.
Sincerely, Brian D. Boles cc: NRC Region Ill Administrator NRR Project Manager NRC DLR Project Manager NRC Resident Inspector NRR Division of Component Integrity Utility Radiological Safety Board