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Category:Letter
MONTHYEARML23261C4152023-10-10010 October 2023 NRC Letter to Nuclear Development, LLC on Withdrawing Its Application to Transfer Construction Permits for Bellefonte Units 1 and 2 ML23263A1002023-08-28028 August 2023 Withdrawal of Application for License Transfer ML22147A1362022-06-17017 June 2022 Tennessee Valley Authority Nuclear Quality Assurance Plan, Revision 40 CNL-21-082, Bellefonte Nuclear Plant, Units 1 and 2 - Withdrawal of Request for Extension of Unit 1 and Unit 2 Construction Permits (CPPR-122 and CPPR-123)2021-09-10010 September 2021 Bellefonte Nuclear Plant, Units 1 and 2 - Withdrawal of Request for Extension of Unit 1 and Unit 2 Construction Permits (CPPR-122 and CPPR-123) ML21246A1322021-09-0303 September 2021 Bellefonte Nuclear Plant, Unit 1 and 2, Status Update and Request to Continue to Hold Pending Appeal CNL-21-077, Bellefonte Nuclear Plant, Units 1 and 2, Status Update and Request for Extension of Construction Permits (CPPR-122 and CPPR-123)2021-08-31031 August 2021 Bellefonte Nuclear Plant, Units 1 and 2, Status Update and Request for Extension of Construction Permits (CPPR-122 and CPPR-123) CNL-21-045, Bellefonte Nuclear Plant, Units 1 and 2; Browns Ferry Nuclear Plant, Units 1, 2, and 3; Clinch River Nuclear Site; Sequoyah Nuclear Plant, Units 1 and 2; Watts Bar Nuclear Plant, Unit 1 and 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN82021-04-29029 April 2021 Bellefonte Nuclear Plant, Units 1 and 2; Browns Ferry Nuclear Plant, Units 1, 2, and 3; Clinch River Nuclear Site; Sequoyah Nuclear Plant, Units 1 and 2; Watts Bar Nuclear Plant, Unit 1 and 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN89- ML20335A3932021-01-22022 January 2021 Bellefonte Nuclear Plant, Units 1 and 2 Extension of Construction Permit Expiration Dates (Cac/Epid Nos. 000976/05000438/L-2020-LLA-0214 and 000976/05000439/L 2020 ML20286A1722020-11-0303 November 2020 NRC Response to Nuclear Development Letter Dated September 11, 2020 ML20255A2042020-09-11011 September 2020 Bellefonte Nuclear Plant, Units 1 & 2 - Supplement to Application for Order Approving Construction Permit Transfers and Conforming Administrative Amendments ML20230A3692020-08-31031 August 2020 Status of the NRC Staff'S Review of Nuclear Development, LLC Application for Order Approving Construction Permit Transfers and Conforming Administrative Construction Permit Amendments and Construction Permit Extension Requests (EPID No. L-2 CNL-20-072, Tennessee Valley Authority - Bellefonte Nuclear Plant (Bln), Units 1 and 2 - Status Update and Request for Extension of Unit 1 Construction Permit CPPR-1222020-08-28028 August 2020 Tennessee Valley Authority - Bellefonte Nuclear Plant (Bln), Units 1 and 2 - Status Update and Request for Extension of Unit 1 Construction Permit CPPR-122 ML20168B0222020-06-16016 June 2020 Bellefonte Nuclear Plant, Unit 1 and 2 - Supplemental Information Regarding Response to Request for Additional Information CNL-20-039, Bellefonte Nuclear Plant, 1 & 2; Browns Ferry Nuclear Plant, 1 & 2; Clinch River Site; Sequoyah Nuclear Plant, 1 & 2; and Watts Bar Nuclear Station, Units 1 & 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 382020-04-30030 April 2020 Bellefonte Nuclear Plant, 1 & 2; Browns Ferry Nuclear Plant, 1 & 2; Clinch River Site; Sequoyah Nuclear Plant, 1 & 2; and Watts Bar Nuclear Station, Units 1 & 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 38 ML20112F3172020-04-30030 April 2020 Nuclear Development Withholding Letter - March 2020 RAI Response ML20073P3762020-03-13013 March 2020 Nuclear Development, LLC - Response to Request for Additional Information ML19298A1942019-11-0505 November 2019 Letter to Nuclear Development - Acceptance Letter to Review CP Transfer Application ML19281A7862019-10-21021 October 2019 Bellefonte Nuclear Plant, Units 1 and 2 - Licensing Project Manager Assignment ML19240A3822019-08-28028 August 2019 Bellefonte Nuclear Plant, Units 1 and 2 Response to Request for Supplemental Information ML19161A2492019-06-18018 June 2019 Bellefonte Nuclear Plant, Units 1 and 2 - NRC Response to Nd Request for Extension to Supplement Date Regarding Construction Permit Transfer Request ML19155A2432019-06-0404 June 2019 Nuclear Development, LLC - Request for Additional Time to Respond to Request for Supplemental Information CNL-19-043, Bellefont Nuclear Plant, Units 1 & 2; Browns Ferry Nuclear Plan, Units 1, 2 & 3; Clinch River Nuclear Site; Sequoyah Nuclear Plant, Units 1 & 2; and Watts Bar Nuclear Plant, Units 1 & 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, R2019-05-0808 May 2019 Bellefont Nuclear Plant, Units 1 & 2; Browns Ferry Nuclear Plan, Units 1, 2 & 3; Clinch River Nuclear Site; Sequoyah Nuclear Plant, Units 1 & 2; and Watts Bar Nuclear Plant, Units 1 & 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Rev ML18348B1392019-04-0505 April 2019 Letter to Nuclear Development LLC Bellefonte Nuclear Plant, Units 1 and 2, Containing Enclosure with Supplemental Information Needed for Acceptance of Requested Application ML18340A0642018-12-20020 December 2018 U.S. Nuclear Regulatory Commission'S Response to Letter from National Environmental Group Regarding the Bellefonte Nuclear Plant, Dated December 1, 2018 ML18319A3322018-12-18018 December 2018 Request for Withholding Proprietary Information from Public Disclosure for the Bellefonte Nuclear Generating Station, Units 1 and 2 ML18318A4282018-11-13013 November 2018 Bellefonte Nuclear Plant - Application for Order Approving Construction Permit Transfers and Conforming Administrative Construction Permit Amendments ML17233A2292018-06-21021 June 2018 Letter to TVA on Change in Licensing Project Branch and Lead Licensing Project Manager for Bellefonte Units 1 & 2 CNL-18-069, Tennessee Valley Authority - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revisions 35 and 362018-05-0808 May 2018 Tennessee Valley Authority - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revisions 35 and 36 CNL-18-022, Bellefonte, Unit 2 - Containment Vertical Tendon (V281) Failure - Final Report2018-02-23023 February 2018 Bellefonte, Unit 2 - Containment Vertical Tendon (V281) Failure - Final Report CNL-17-154, Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 342017-12-27027 December 2017 Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 34 CNL-17-137, Bellefonte Nuclear Plant, Unit 2, Containment Vertical Tendon (V281) Failure - Third Interim Report2017-10-30030 October 2017 Bellefonte Nuclear Plant, Unit 2, Containment Vertical Tendon (V281) Failure - Third Interim Report CNL-17-076, Bellefonte Nuclear Plant, Unit 2 - Containment Vertical Tendon (V281) Failure - Second Interim Report2017-06-0707 June 2017 Bellefonte Nuclear Plant, Unit 2 - Containment Vertical Tendon (V281) Failure - Second Interim Report CNL-17-051, Bellefonte Nuclear Plant (Bln), Unit 2 - Status Update Regarding Construction Permit CPPR-1232017-03-31031 March 2017 Bellefonte Nuclear Plant (Bln), Unit 2 - Status Update Regarding Construction Permit CPPR-123 CNL-17-004, Bellefonte, Unit 2 - Containment Vertical Tendon (V281) Failure - First Interim Report2017-01-0606 January 2017 Bellefonte, Unit 2 - Containment Vertical Tendon (V281) Failure - First Interim Report CNL-16-204, Bellefonte, Units 1 and 2, Browns Ferry, Units 1, 2, and 3, Sequoyah, Units 1 and 2, Watts Bar, Units 1 and 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 332016-12-28028 December 2016 Bellefonte, Units 1 and 2, Browns Ferry, Units 1, 2, and 3, Sequoyah, Units 1 and 2, Watts Bar, Units 1 and 2 - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A, Revision 33 ML16259A1892016-12-0505 December 2016 Nuclear Regulatory Commission Plan for the Audit of Mitigation Strategies Assessment Submittals Related to Order EA-12-049, Order to Modify Licenses With Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events ML16175A3322016-06-28028 June 2016 Browns Ferry Nuclear Plant, Units 1, 2 and 3, Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2 - Assignment of U.S. Nuclear Regulatory Commission Acting Branch Chief CNL-16-085, Bellefonte, Browns Ferry, Sequoyah, and Watts Bar - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A2016-05-10010 May 2016 Bellefonte, Browns Ferry, Sequoyah, and Watts Bar - Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A ML15307A2232015-11-0909 November 2015 Bellefonte Nuclear Plant, Units 1 and 2 - Project Manager Assignment ML15288A4972015-10-28028 October 2015 Reassignment of U.S. Nuclear Regulatory Commission Branch Chief ML15180A3662015-07-0808 July 2015 Bellefonte Nuclear Plant, Units 1 and 2 - Staff Assessment of Information Provided Pursuant to Title 10 of the Code of Federal Regulations Part 50, Section 50.54(f), Seismic Hazard Reevaluations for Recommendation 2.1 of the Near-Term Task CNL-15-096, Tennessee Valley Authority (TVA) Response to NRC Regulatory Issue Summary 2015-072015-06-19019 June 2015 Tennessee Valley Authority (TVA) Response to NRC Regulatory Issue Summary 2015-07 ML15105A1882015-04-17017 April 2015 Correction Letter for Proposed Director'S Decision Regarding Saporito Petition Dated March 12, 2011 ML13018A2392015-04-0808 April 2015 G20110171 - Letter to Petitioner Saporito on Proposed Director'S Decision Regarding 2.206 Petition Dated: March 12, 2011 ML15023A2592015-02-26026 February 2015 NRC Response to Tennessee Valley Authority - Proposed Alternative Submittal Schedule as Described in the Attached Enclosures Due to the Deferred Construction Status of Bellefonte Nuclear Plant, Units 1 and 2, Dated October 21, 2014 ML14307B7072014-12-10010 December 2014 Supplemental Information Related to Development of Seismic Risk Evaluations for Information Request Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Seismic Hazard Reevaluations for Recommendation 2.1 of the Near-T CNL-14-214, Bellefonte, Units 1 and 2 - Response to Request for Additional Information Regarding Near-Term Task Force Recommendation 2.1: Seismic Hazard and Screening Report2014-12-0303 December 2014 Bellefonte, Units 1 and 2 - Response to Request for Additional Information Regarding Near-Term Task Force Recommendation 2.1: Seismic Hazard and Screening Report ML14304A5842014-11-0606 November 2014 Notice of Availability of the Final Supplemental Environmental Impact Statement for Callaway, Unit 1, (Mo Shpo Log #008-CY-10) ML14304A5202014-11-0606 November 2014 ACHP-Notice of Availability of the Final Supplemental Environmental Impact Statement for Callaway Plant, Unit 1 ML14304A7222014-11-0606 November 2014 FSEIS Tribal-Notice of Availability of the Final Supplemental Environmental Impact Statement for Callaway Plant, Unit 1 (Mo Shpo Log #008-CY-10) 2023-08-28
[Table view] Category:Report
MONTHYEARML17024A0362016-12-31031 December 2016 Operating Data Report for 2016 CNL-14-038, Tennessee Valley Authority'S Seismic Hazard & Screening Report (CEUS Sites), Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Recommendation 2.1 of Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Acc2014-03-31031 March 2014 Tennessee Valley Authority'S Seismic Hazard & Screening Report (CEUS Sites), Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Recommendation 2.1 of Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accid ML12249A0062012-08-28028 August 2012 Bellefonte Nuclear Plant, Units 1 & 2, Submittal of Revised Quality Verification Program ML12093A4012012-03-29029 March 2012 Bellefonte Nuclear Plant, Units 1 and 2 - Containment Vertical Tendon Coupling Failure - Fifth Interim Report ML1109400422011-03-29029 March 2011 Bellefonte, Units 1 and 2, Regarding Containment Vertical Tendon Coupling Failure- Fourth Interim Report ML1009000902010-03-29029 March 2010 Tennessee Valley Authority (TVA) - Bellefonte Nuclear Plant (Bln) Unit 1 (CPPR-122) and 2 (CPPR-123) - Containment Vertical Tendon Coupling Failure - Second Interim Report ML1108310412009-05-31031 May 2009 Engineering Evaluation of Hesco Barriers Performance at Fargo, Nd 2009, Wenck File 2283-01, Enclosure 2 ML0607204302006-03-0101 March 2006 March 1, 2006 Public Meeting Slides for Proposed Generic Letter Post-Fire Safe-Shutdown Circuit Analysis Spurious Actuations. ML11307A4202005-04-30030 April 2005 Enclosure 2 - Wenck Associates, Inc., Engineering Evaluation of Hesco Barriers Performance at Fargo, Nd 2009, May 2009 ML1108310422005-04-30030 April 2005 Texas Transportation Institute, DOS K12 Crash Test and Evaluation of the Hesco C-3315 Flood Barrier, April 2005, Enclosure 3 ML0406204492004-02-26026 February 2004 Fitness-for-Duty (FFD) Program Performance Data for July - December 2003 ML0230303012002-10-15015 October 2002 TVA Nuclear Strategic Performance Improvement Initiatives 2016-12-31
[Table view] Category:Miscellaneous
MONTHYEARML17024A0362016-12-31031 December 2016 Operating Data Report for 2016 ML12093A4012012-03-29029 March 2012 Bellefonte Nuclear Plant, Units 1 and 2 - Containment Vertical Tendon Coupling Failure - Fifth Interim Report ML1109400422011-03-29029 March 2011 Bellefonte, Units 1 and 2, Regarding Containment Vertical Tendon Coupling Failure- Fourth Interim Report ML1009000902010-03-29029 March 2010 Tennessee Valley Authority (TVA) - Bellefonte Nuclear Plant (Bln) Unit 1 (CPPR-122) and 2 (CPPR-123) - Containment Vertical Tendon Coupling Failure - Second Interim Report ML0607204302006-03-0101 March 2006 March 1, 2006 Public Meeting Slides for Proposed Generic Letter Post-Fire Safe-Shutdown Circuit Analysis Spurious Actuations. ML0406204492004-02-26026 February 2004 Fitness-for-Duty (FFD) Program Performance Data for July - December 2003 ML0230303012002-10-15015 October 2002 TVA Nuclear Strategic Performance Improvement Initiatives 2016-12-31
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Text
Tennessee Valley AuthorliY, 1101 Market Street, Chattanooga, Tennessee 37402-2801 March 29, 2010/
/
10 CFR 50.55 (e)
U.S. NO'clear Regulatory Commission ATTN.- Document Control Desk Was'iington, D.C. 20555 Ikjthe Matter of ) Docket Nos. 50-438 and 50-439 T tnnessee Valley Authority )
TENNESSEE VALLEY AUTHORITY (TVA) - BELLEFONTE NUCLEAR PLANT (BLN)
UNITS 1 (CPPR-122) AND 2 (CPPR-123) - CONTAINMENT VERTICAL TENDON COUPLING FAILURE - SECOND INTERIM REPORT The purpose of this-letter is to provide the NRC with the second interim report on the subject matter which was initially reported to the NRC Operations Center on December 10, 2009 as Problem Evaluation Report 200119. The enclosure to this letter contains the second interim report. The attachmeht to the enclosure provides the list of commitments made in this submittal. TVA expects to submit the next report by September 30, 2010.
Sincerely, Ja A. Bailey Vir sPresident, N c ar Generation Development Niulear Generation Development & Construction
Enclosure:
- 1. 10 CFR 50.55(e) Second Interim Report Bellefonte Nuclear Plant (BLN)
Containment Vertical Tendon Coupling Failure cc: See page 2 D Ob
. I U.S. Nuclear Regulatory Commission Page 2 March 29, 2010 cc: (w/Enclosure)
Patrick D. Milano U.S. Nuclear Regulatory Commission One White Flint North, 8C2 11545 Rockville Pike Rockville, Maryland 20852-2738 Lakshminarasimh Raghavan U.S. Nuclear Regulatory Commission One White Flint North, 8H4A 11545 Rockville Pike Rockville, Maryland 20852-2738
'Mr. Luis A. Reyes, Regional Administrator U.S. Nuclear Regulatory Commission Region II Sam Nunn AtlantaFederal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 Loren R. Plisco, Deputy Regional Administrator for Construction U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931
Enclosure TVA Letter Dated March 29, 2010 10 CFR 50.55(E) SECOND INTERIM REPORTý BELLEFONTE NUCLEAR PLANT (BLN)
CONTAINMENT VERTICAL TENDON COUPLING FAILURE Description of Deficiency Inspection of failed Unit 1 Reactor Building Containment Vertical Tendon V9 indicates a potential for an unknown common mode failure mechanism for BLN Containment vertical tendon rock anchor couplings. Unit 1 Reactor Building Containment Vertical Tendon V9 experienced a failure of the rock anchor/tendon anchor coupling on August 17, 2009, at approximately 1400 CDT. The time of failure was identified based on a loud noise being reported by several individuals. Initial investigation failed to reveal the source of the noise. The failed tendon was discovered on August 24, 2009, during a tour of the U1 Tendon Gallery, elevation 607. Potentially unsafe-conditions previously precluded an inspection of the failed coupling for, proper installation or component specific damage.
The failed tendon coupling was inspected on November 23, 2009, and showed no signs of component-specific damage or improper installation, thus indicating the potential for an unknown common mode failure.
Safety Significance TVA has made a determination .of the mechanism of failure and actions to determine the extent of the condition are in progress. If multiple containment tendons are found to be losing the capability to carry tendon design force, and this condition was left uncorrected, this could jeopardize the ability of the containment structure to perform its design function.
Cause of Deficiency The failure mode has been determined to be hydrogen-induced stress corrosion cracking (SCC). The root cause of the failure is water in contact with the grease surrounding the failed coupling in a high stress area. For this morphology to occur, a high stress level in the coupling combined with sulfides and water in the grease must exist.
Interim Progress Metallurgical analysis of the failed coupling at the TVA Central Services Metallurgical Laboratory, with support fro'm Oak Ridge National Laboratory, has been completed.
Listed below are the actions taken since the last meeting, including the metallurgical analysis of the coupling, non-destructive examination (NDE) of V-9 field anchor and tendon wires, and chemical analysis of the grease removed from the V-9 tendon anchor assembly. Additionally, planned future actions are provided.
Enclosure TVA Letter Dated March 29, 2010 Actions Taken Since Last Report
- Physical work o V-9 field anchor, coupling and tendon wires removed Examinations performed o NDE Examinations
- Florescent magnetic particle examination of the V-9 field anchor head, rock anchor head and coupling 0 Dye penetrant examination of thirteen V-9 tendon wires o Metallurgical analysis of the V-9 coupling and field anchor head
- Visual examination and dimensional documentation
, Chemical analysis
- Scanning Electron Microscopy (SEM) fractography and Energy Dispersive Spectroscopy (EDS)
- SEM and EDS of thread surfaces
, Metallographic examination
- Hardness and microhardness testing
- Tensile and Charpy impact testing of coupling and field anchor head
- Tensile testing of tendon wires o Grease Analysis E Chemical analysis per RG 1.35 guidelines N X-ray photoelectron spectroscopy (XPS) of grease removed from the V-9 tendon anchor assembly.
Results
- Examination of coupling Laboratory testing found no deficiencies in the coupling material that would have contributed to the failure. Fractography and metallographic examination determined that the primary fracture had a mixture of transgranular and intergranular stress corrosion cracking (SCC) separation, with little branching.
For this low alloy steel (AISI 4142H quenched and tempered), such fracture features are associated with SCC in which the presence of hydrogen acts as a driving mechanism. This high strength steel is known to be susceptible to SCC at room temperature in certain environments, such as one including hydrogen sulfide. Examination of the fracture surface and corrosion deposits in the cracks found the presence of sulfur. In addition, results of the examination of the grease taken from this location, as discussed below, discovered that the presence of sulfide combined with calcium, as well as other species, including free sulfur and sulfur in an oxide form, possibly sulfite.
Enclosure.
TVA Letter Dated March 29, 2010 Examination of anchor heads'-
The field anchor head was made of AISI 4140 quenched and tempered steel, which is susceptible to hydrogen-induced SCC at room temperature.
Florescent magnetic particle examination of the V-9 field anchor head identified multiple circumferential and axial indications in the thread area in contact with the field anchor.
Florescent magnetic particle examination of the V-9 rock anchor head was completed with no indications identified.
Examination of tendon wires -
Thirteen tendon wires, including button heads, were penetrant tested with no indications identified.
Grease XPS is a surface analysis technique which can also differentiate between the molecular states of the elements present. The XPS finding indicates the presence of sulfide combined with calcium, as well as other species including free sulfur and sulfur in an oxide form. The content of Regulatory Guide 1.35 identified properties against the limits of reportability are shown below.
Property Result RG 1.35 Limits of ' Standard Reportability Water content by .4% > 10% by weight ASTM D95 weight Chlorides .9 -3.8 PPM > 10 PPM " ASTM D512 Nitrates < 3.8 PPM > 10 PPM ASTM D3867 Sulfides < 1 PPM " > 10 PPM APHA 4500 S2 Reserve alkalinity 56.4 < 50% of installed ASTM D974 Presence of free NA zero RG 1.35 water Further Actions.Planned to Determine Extent of Condition
- Perform further sampling of grease from vertical, horizontal and dome tendon grease cans using criteria of RG 1.35.
- Develop containment de-tensioning plan to support vertical tendon NDE testing, including lessons learned from recent industry experience with containment concrete voiding.
- Perform an'approved magnetic particle and ultrasonic testing (UT) examination on a sample of vertical tendon anchor heads and couplings using a sampling plan designed to obtain a 95% confidence and 95% reliability level based on ANSI/ASQCZ1.4-1981.
BLN corrective action program Problem Evaluation Report (PER) number 200119 is being used to document and manage the V-9 coupling failure assessment and the corrective actions which will be implemented to prevent recurrence.
Enclosure TVA Letter Dated March 29, 2010 ATTACHMENT TO 10 CFR 50.55(E) SECOND INTERIM REPORT BELLEFONTE NUCLEAR PLANT (BLN)
CONTAINMENT VERTICAL TENDON COUPLING FAILURE LIST OF COMMITMENTS
- 1. TVA will submit an update to this interim report prior to September 30, 2010.
t.