|
|
| (2 intermediate revisions by the same user not shown) |
| Line 2: |
Line 2: |
| | number = ML23171A913 | | | number = ML23171A913 |
| | issue date = 06/20/2023 | | | issue date = 06/20/2023 |
| | title = Amse, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report | | | title = Amse, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner’S Activity Report |
| | author name = Sivaraman M | | | author name = Sivaraman M |
| | author affiliation = Tennessee Valley Authority | | | author affiliation = Tennessee Valley Authority |
| Line 15: |
Line 15: |
|
| |
|
| =Text= | | =Text= |
| {{#Wiki_filter:TENNESSEE 1\14 VALLEY AUTHORITY Post Office Box 2000, Decatur, Alabama 35609-2000 June 20, 2023 10 CFR 50.55a ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Unit 2 Renewed Facility Operating License No. DPR-52 NRC Docket No. 50-260 | | {{#Wiki_filter:VALLEY TENNESSEE 1\\14 AUTHORITY |
| | |
| | Post Office Box 2000, Decatur, Alabama 35609-2000 |
| | |
| | June 20, 2023 10 CFR 50.55a |
| | |
| | ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 |
| | |
| | Browns Ferry Nuclear Plant, Unit 2 Renewed Facility Operating License No. DPR-52 NRC Docket No. 50-260 |
|
| |
|
| ==Subject:== | | ==Subject:== |
| American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation The Tennessee Valley Authority is submitting the Browns Ferry Nuclear Plant (BFN), American Society of Mechanical Engineers (ASME), Section XI, Owners Activity Report for BFN, Unit 2, Cycle 22 Operation. The report is contained in the enclosure to this letter and is in accordance with the requirements of ASME Code Case N-532-5, Repair/Replacement Documentation Requirements and Inservice Summary Report Preparation and Submission, Section XI, Division 1. | | American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation |
| The report is an overview of the inservice examination results that were performed on components within the ASME Section XI boundary, up to and including the BFN, Unit 2, Cycle 22 refueling outage, during the third inspection period of the Fifth 10 Year Inspection Interval. The applicable provisions of the ASME Code Case N-532-5 require that this report be submitted within 90 calendar days of the completion of each refueling outage. The BFN, Unit 2, Cycle 22 refueling outage ended on March 22, 2023. Accordingly, this submittal is due by June 20, 2023. | | |
| | The Tennessee Valley Authority is submitting the Br owns Ferry Nuclear Plant (BFN), American Society of Mechanical Engineers (ASME), Section XI, Owners Activity Report for BFN, Unit 2, Cycle 22 Operation. The report is contained in the enclosure to this letter and is in accordance with the requirements of ASME Code Case N-532-5, Repair/Replacement Documentation Requirements and Inservice Summary Report Preparation and Submission, Section XI, Division 1. |
| | |
| | The report is an overview of the inservice examination results that were performed on components within the ASME Section XI boundary, up to and including the BFN, Unit 2, Cycle 22 refueling outage, during the third inspection period of the Fifth 10 Year Inspection Interval. The applicable provisions of the ASME Code Case N-532-5 require t hat this report be submitted within 90 calendar days of the completion of each refueling outage. The BFN, Unit 2, Cycle 22 refueling outage ended on March 22, 2023. Accordingly, this submittal is due by June 20, 2023. |
| | U.S. Nuclear Regulatory Commission Page 2 June 20, 2023 |
| | |
| | There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact C. L. Vaughn, Site Licensing Manager, at (256) 729-2636. |
|
| |
|
| U.S. Nuclear Regulatory Commission Page 2 June 20, 2023 There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact C. L. Vaughn, Site Licensing Manager, at (256) 729-2636.
| | Respectfully, |
| Respectfully, Manu Sivaraman Site Vice President
| | |
| | Manu Sivaraman Site Vice President |
|
| |
|
| ==Enclosure:== | | ==Enclosure:== |
| American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation cc (Enclosure): NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Project Manager - Browns Ferry Nuclear Plant | | American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation |
|
| |
|
| Enclosure Tennessee Valley Authority Browns Ferry Nuclear Plant Unit 2 American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation See Enclosed | | cc (Enclosure): NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Project Manager - Browns Ferry Nuclear Plant |
|
| |
|
| FORM OAR~1 OWNER'S ACTIVITY REPORT Report Number --"8'-'-F...,_N,..,U"-'2'-'-R_,_,2 .,2~----- - - - - - - -- -- - -- - - - -- - - - - - -- - - - - - -- -
| | Enclosure |
| Plant Browns Ferry Nuclear Pl<1nl. P 0 . Box 2000 Decatur AL 35609 Unit No. - ---,-~2~-,-- Commercial service date March 1 1975 Refueling Outage no. --"'R~e~fl~ ' e"'li'-'n"'g_,O"-'u'-'-l'ag"'
| |
| " e"-"-2,._2_ _
| |
| (ir apph.:abliC!-)
| |
| Current Inspection Interval Fifth Ten Year inspection Interval
| |
| { 151. 2M, 31C1 . mtier)
| |
| Current Inspection Period T~h~i~rd~P~e~ri=od~-------- -------::-c--:::-,-,-,----- - - - - -- - - - - - - --
| |
| p s,. 2nd, :!;, d) 2007 Edition, 2008 Addenda (ISi)
| |
| Edition and Addenda of Section XI applicable lo l11e inspection plans =2=0~13~E~d~it,~ *o~n~(C=IS~IL)- - - -- - - - - -- - - - - - - ~
| |
| O-TPP-ENG-376, Revision 0004, 11/18/2022 O-Tl-364, Revision 0025, 02/06/2023 Dale and Revision of inspection plan 0-TPP-E NG-467 Revision 0001 01/12/2023 Edition and Addenda of Section XI applicable lo repairs and replacements, if different than the inspection plan ~N=IA~- -
| |
| Code Cases used for inspection and evaluation: N-532-5 N-613-2 N-716-1 N-751 N-854 . and N-864 (1I apphc.able, 1nclud1r\Q Crl:!>C~ mQd1f;ed b)' Case N-S-32 anel la!Cr f C','1$kil'I~)
| |
| CERTIFICATE OF CONFORMANCE I certify that (a) lhe statements made in this report are correct (b) the examinations and tests meet the Inspection Plan as required by the ASME Code , Section XI ; and (c) the re pair/rep lacement activities and evaluations supporting the completion of U2R22 conform to the requiremen ts of Section XL '"''"'""!l oota~c ou mner) s,,,.,f?~
| |
| CERTIFICATE OF INSERVICE INSPECTION I, the undersigned. holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and employed by The Hartford Steam Boiler lnspeclion and Insurance Company of Hartford Connecticut have inspected the items described in th is Owner s Activity Report and state that, to the best of my knowledge and belief, lhe Owner has performed all activities represented by this report in accordance wit h the requirements of Section XI.
| |
| By signing this certifica te neither the Inspector nor his emp loyer makes any warranty , expressed or implied , concerning the repai r/rep lacement activities and evalua tion described in this report . Furthermore, neither the Inspector nor his employer shal l be liable in any manner for any personal 1n1ury o(. roperty damage or a loss of any kind arising from or connected with this Inspection P/~7 , Comm issions f'Sf3. I ~q 71 L, N R...
| |
|
| |
|
| FORM OAR-1 OWNER'S ACTIVITY REPORT TABLES Report Number - BFNU2R22 PI ant Browns Ferry Unit No. 2 Commercia l service date 03/01/1975 Refueling outage no. 22 Current inspection interval 5th Current inspection period 3rd TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRE EVALUATIONS FOR CONTINUED SERVICE Exam ination Category and Item Number Item Description Evaluation Description F-A / F1 .30C Residual Heat Removal Service Water NOi U2R22-001 Variable Support, 2-4 7B450H0041 A variable spring support setting was found out of tolerance/ out of its load seeing range . It was determ ined that the as-found setting was within the allowable working range , and that the variable spring support wou ld have been able to perform its intended design function without any adverse effect. The spring was reset to within the design limit.
| | Tennessee Valley Authority |
|
| |
|
| FORM OAR-1 OWNER'S ACTIVITY REPORT TABLES Report Number PI ant
| | Browns Ferry Nuclear Plant Unit 2 |
| -BFNU2R22 Browns Ferry Unit No. 2 Commercia l service date 03/01/1975 Refueling outage no. --
| |
| Current inspection interval 5th Current inspection period 3rd TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Date Repair/Replacement Item Description Description of Work Class Completed Plan Number Replacement of BFN-2-FCV-068-0003 valve dra in li ne (3/4 ") leak .
| |
| Flaw was removed with the drain Through wall leak was 1 line and replaced with a 2" line. 3-14-2023 123498959 identified Design change was detailed in Eng ineering Change Paper (ECP) number BFN-23-018.
| |
|
| |
|
| FORM OAR-1 OWNER'S ACTIVITY REPORT TABLES Report Number BFNU2R22 PI ant Browns Ferry Unit No. 2 Commercial service date 03/01/1975 Refueling outage no. - - | | American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation |
| Current inspection interval 5th Current inspection period 3rd REPORTING REQUIRED BY 10 CFR 50.55a(b)(2)(ix)(A) | | |
| ASME Section XI, Subsection IWE Steel Containment Vessel Inspection program 10 CFR 50.55a(b)(2)(ix)(A) requires reporting of the degradation assessment for inaccessible areas when conditions are identified in accessible areas during the performance of the ASME Section XI, Subsection IWE Steel Containment Vessel (SCV) | | See Enclosed |
| | |
| | FORM OAR~1 OWNER'S ACTIVITY REPORT |
| | |
| | Report Numbe r --"8'-'-F...,_N,..,U"-'2'-'-R_,_,2.,2~---- - ------- ----- ----- ------- ------- - |
| | |
| | Plant Browns Ferry Nuc lear Pl<1nl. P 0. Box 2000 Decatur AL 35609 |
| | |
| | Unit No. - ---,-~2~-,- al service date March 1 1975 Refueling Outage no. --"'R~e~fl~'e"'li'-'n"'g_,O"-'u'-'-l'"ag"'e"-"-2,._2 __ |
| | (ir apph.: abl iC!-) Commerc i |
| | |
| | Current Inspect ion Interval Fifth Ten Year inspection Interval |
| | { 151. 2M, 31 C1. m tier) |
| | |
| | Current Inspection Period T~h~i~rd~P~e~ri=od~------- - -------::-c--::: -,-,-,---- ------ -------- p s,. 2n d, :!;, d) |
| | |
| | 2007 Edition, 2008 Addenda (ISi) |
| | Edition and Addenda of Section XI applicable lo l11e inspection plans =2=0~13~E~d~it,~*o~n~(C=IS~IL) ---- ------ -------~ |
| | |
| | O-TPP-ENG-376, Revision 0004, 11/18/2022 O-Tl-364, Rev ision 0025, 02/06/2023 Dale and Rev ision of inspection plan 0-TPP-E NG-467 Revision 0001 01/12/2023 |
| | |
| | Edition and Addenda of Section XI applicable lo repairs and replacements, if different than the inspection plan ~N=IA~- |
| | |
| | Code Cases used for inspection and evaluation : N-532-5 N-613-2 N-716-1 N-751 N-854. and N-864 (1I ap p hc.able, 1nc lu d 1r\\Q Crl:!>C~ mQd1f;ed b)' C a se N -S-32 anel la!Cr fC','1$kil'I~) |
| | |
| | CERTIFICATE OF CONFORMANCE |
| | |
| | I certify that (a) lhe statements made in this report are correc t (b) the ex aminations and tests meet the Inspection Plan as required by the ASME Code, Section XI ; and (c) the repair/replacement act ivities and evaluations supporting the completion of U2R22 conform to the requ iremen ts of Section XL '"' '"'""!l oota~ c ou mne r) s,,,.,f?~ |
| | |
| | CERTIFICATE OF INSERVICE INSPECTION |
| | |
| | I, the und ersigned. holding a va lid commiss ion issued by the National Board of Boiler and Pressure Vessel Inspectors and employed by The Hartford Steam Bo iler lnspeclion and Insurance Company of Hartford Connect icut have inspected the items described in this Owne rs Activity Report and state that, to the best of my knowledge a nd belief, lhe Owner has performed all activities represented by this report in accordance with the requirements of Section XI. |
| | By signing this certificate neither the Ins pec tor nor his emp loyer makes any warranty, expressed or implied, concerning the repair/ rep lacemen t act ivities and evalua tion described in this report. Furthermore, ne ither the Inspector nor his employer shall be liable in any manner for any personal 1n1ury o(. roperty damage or a loss of any kind arising from or connected with this Inspection P/~7, Comm issions f'Sf3. I ~q 71 L, N R... |
| | FORM OAR-1 OWNER'S ACTIVITY REPORT |
| | |
| | TABLES Report Number BFNU2R22 ------------------------------- |
| | PI ant Browns Ferry Unit No. 2 Commercia l service date 03/01/1975 Refueling outage no. 22 - --- |
| | Cur rent inspection interval 5th Current inspection peri----- ----- - -od 3rd TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRE EVALUATIONS FOR CONTINUED SERVICE Exam ination Category and Item Number Item Description Evaluation Description F-A / F1.30C Residual Heat Removal Service Water NOi U2R22 -001 Variable Suppo rt, 2-4 7B450H0041 A variable spring support setting was found out of tolerance/ out of its load seeing range. It was determined that the as-found setting was w ithin the allowable working range, and that the va riable spring support wou ld have bee n ab le to perform its intended design function w ithout any adve rse effect. The spring was reset to within the design limit. |
| | FORM OAR-1 OWNER ' S ACTIVITY REPORT |
| | |
| | TABLES Report Number BFNU2R22 ---- -------- ---- -------- ------ |
| | PI ant Browns Ferry Unit No. 2 Commercia l service date 03/01/1975 Refueling outage no. 22 - --- |
| | Current inspection interval 5th ----- Current inspection period 3rd - ------ |
| | TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description Description of Work Date Repair/Replacement Class Completed Plan Number Rep lacement of BFN-2-FCV-068-0003 valve dra in line (3/4 ") leak. |
| | Through wall leak was Flaw was removed with the d rain 1 line identified Design change was deta ia n d replaced with a 2 " line. 3-14-2023 123498959 led in Eng ineering Change Paper (ECP) number BFN-23 -018. |
| | FORM OAR-1 OWNER'S ACTIVITY REPORT |
| | |
| | TABLES Report Number BFNU2R22 --- ----------------------- ---- |
| | PI ant Browns Ferry Unit No. 2 Commercial service date 03/01/1975 Refueling outage no. 22 ---- |
| | Current inspection interval 5th Current inspection period 3rd ------------ |
| | REPORTING REQUIRED BY 10 CFR 50.55a(b)(2)(ix)(A) |
| | ASME Section XI, Subsection IWE Steel Containment Vessel Inspection program |
| | |
| | 10 CFR 50.55a(b)(2)(ix)(A) requires reporting of the degradation assessment for inaccessible areas when conditions are identified in accessible areas during the performance of the ASME Section XI, Subsection IWE Steel Containment Vessel (SCV) |
| Inspection Program that could indicate the presence of or result in degradation to such inaccessible areas. | | Inspection Program that could indicate the presence of or result in degradation to such inaccessible areas. |
| Browns Ferry Unit 2 is currently in the Third IWE Inspection Interval , Second Period. During BFN U2R22, there were no degradation assessments of inaccessible areas as a result of conditions identified in accessible areas during performance of the ASME Section XI, Subsection IWE SCV Inspection Program. | | |
| Examination Component Indication Acceptability/Corrective Action Inaccessible Additional Category and Identifier Description Area Samples Item Number (Location and Evaluation) | | Browns Ferry Unit 2 is currently in the Third IWE Inspection Interval, Second Period. During BFN U2R22, there were no degradation assessments of inaccessible areas as a result of conditions identified in accessible areas during performance of the ASME Section XI, Subsection IWE SCV Inspection Program. |
| E-A, Item E1.30 MSB-2-1 Mechanical During BFN 2R22, inspection of None None (Moisture Seal Damage Barrier) the drywell Moisture Seal Barrier identified unsatisfactory locations that cou ld potentially permit moisture intrusion into the inaccessible areas beneath the barrier. The MSB was excavated in these locations to make the steel containment vessel accessible and visually examined with no reportable conditions identified. Conditions were corrected by cleaning and replacing damaged areas of the MSB with no Repair/ | | |
| Replacement Activity required . | | Examination Component Indication Acceptability/Corrective Action Inaccessible Additional Category and Identifier Description Area Samples Item Number (Location and Evaluation) |
| | E-A, Item E 1.30 MSB-2-1 Mechanical During BFN 2R22, inspection of None None (Moisture Seal Damage the drywell Moisture Seal Barrier Barrier) identified unsatisfactory locations that cou ld potentially permit moisture intrusion into the inaccessible areas beneath the barrier. The MSB was excavated in these locations to make the steel containment vessel accessible and visually examined with no reportable conditions identified. Conditions were corrected by cleaning and replacing damaged areas of the MSB with no Repair/ |
| | Replacement Activity required. |
| The MSB was repaired with examination of the repaired sections having no reportable conditions. A post repair visual examination of the entire MSB was completed with no reportable conditions identified.}} | | The MSB was repaired with examination of the repaired sections having no reportable conditions. A post repair visual examination of the entire MSB was completed with no reportable conditions identified.}} |
|
|---|
Category:Inservice/Preservice Inspection and Test Report
MONTHYEARML24176A1132024-06-23023 June 2024
American Society of Mechanical Engineers, Section XI, Fourth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner’S Activity Report Cycle 21 Oper
CNL-23-070, Submittal of Fifth 10-Year Interval Inservice Testing Program Plan2023-11-29029 November 2023
Submittal of Fifth 10-Year Interval Inservice Testing Program Plan
CNL-23-025, American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI, Inservice Inspection and Augmented Program Interval Revised Request for Alternative 0-ISI-472023-07-0303 July 2023
American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI, Inservice Inspection and Augmented Program Interval Revised Request for Alternative 0-ISI-47
ML23171A9132023-06-20020 June 2023
Amse, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner’S Activity Report
ML23171A9572023-06-20020 June 2023
Replacement Steam Dryer Visual Inspection Results (U2R22)
ML23025A0752023-01-25025 January 2023
American Society of Mechanical Engineers, Section XI, Third 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner’S Activity Report Cycle .
ML23024A1632023-01-24024 January 2023
Replacement Steam Dryer Visual Inspection Results (U1R14)
ML22182A1632022-07-0101 July 2022
American Society of Mechanical Engineers, Section XI, Fourth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns
ML21202A2422021-07-21021 July 2021
American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner'S Activity Report for Browns Ferry Nucle
ML21201A3112021-07-20020 July 2021
Replacement Steam Dryer Visual Inspection Results
ML21036A1532021-02-0505 February 2021
Owner'S Activity Report for Cycle 13 Operation
ML21032A1302021-02-0101 February 2021
Replacement Steam Dryer Visual Inspection Results (U1R13)
ML20176A3652020-06-24024 June 2020
American Society of Mechanical Engineers, Section XI, Fourth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner'S Activity Report for Browns Ferry Nucl
CNL-20-019, American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI, Inservice Inspection and Augmented Program Interval Request for Alternative 0-ISI-472020-02-28028 February 2020
American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI, Inservice Inspection and Augmented Program Interval Request for Alternative 0-ISI-47
ML19190A0722019-07-0909 July 2019
American Society of Mechanical Engineers, Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner'S Activity Report for Browns Ferry Nucle
ML19051A0182019-02-20020 February 2019
American Society of Mechanical Engineers Section XI, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report Cycle 12 Operation
CNL-18-123, Re-Submittal of American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Inservice Inspection (ISI) Program and Augmented Program, Second Ten Year Interval Request for Relief 1-ISI-272018-12-27027 December 2018
Re-Submittal of American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Inservice Inspection (ISI) Program and Augmented Program, Second Ten Year Interval Request for Relief 1-ISI-27
ML18186A6042018-07-0505 July 2018
American Society of Mechanical Engineers Section XI, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Browns Ferry Nuclear Plant, Unit 3, Cycle 1
CNL-18-080, American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Inservice Inspection (ISI) Program, Unit 1 Second Ten-Year Interval Request for Relief for 1-ISI-28 and 1-ISI-292018-05-31031 May 2018
American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Inservice Inspection (ISI) Program, Unit 1 Second Ten-Year Interval Request for Relief for 1-ISI-28 and 1-ISI-29
ML17180A3862017-06-29029 June 2017
American Society of Mechanical Engineers Section Xl, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 1
CNL-17-013, American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Inservice Inspection (ISI) Program, Unit 3 Third Ten Year Interval Request for Relief for 3-ISI-28 and 3-ISI-292017-01-31031 January 2017
American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Inservice Inspection (ISI) Program, Unit 3 Third Ten Year Interval Request for Relief for 3-ISI-28 and 3-ISI-29
ML16176A2842016-06-24024 June 2016
American Society of Mechanical Engineers Section XI, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Cycle 17 Operation
ML15190A3302015-07-0909 July 2015
ASME Section XI, Lnservice Inspection, System Pressure Test, Containment Lnservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Cycle 18 Operation
ML15028A4032015-01-27027 January 2015
American Society of Mechanical Engineers Section Xl, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Cycle 10 Operation
ML14260A3652014-09-12012 September 2014
3 - ASME, Code Section XI-Inservice Inspection Program for the Unit 1 Second Ten-Year Inspection Interval, Unit 2 Fourth Ten-Year Inspection Interval and Unit 3 Third Ten-Year Inspection Interval, Request for an Alternative.
ML14169A4042014-06-16016 June 2014
American Society of Mechanical Engineers Section XI, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Browns Ferry Plant, Unit 3, Cycle 16 Operat
ML14056A2682014-02-11011 February 2014
ASME, Section XI Code, Inservice Inspection Program for Unit I Second Ten-Year Inspection Interval, Unit 2 Fourth Ten-Year Inspection Interval, and Unit 3 Third Ten-Year Inspection Interval, Request for Relief ISI-44
ML13291A3842013-10-0202 October 2013
Inservice Testing Program for the Fourth Ten Year Interval
ML13256A1012013-09-11011 September 2013
CFR 72.48 Changes, Tests, and Experiments, Biennial Summary Report Associated with the Independent Spent Fuel Storage Installation
ML13253A1392013-08-0202 August 2013
American Society of Mechanical Engineers Section Xl, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Cycle 17 Operation
ML13119A3862013-04-29029 April 2013
Ti 182 RFI 2013003_AS Doc
ML13067A4012013-03-0101 March 2013
American Society of Mechanical Engineers Section Xl, Inservice Inspection, System Pressure Test, Containment Inservice Inspection and Repair and Replacement Programs - Owner'S Activity Report for Cycle 9 Operation
ML12240A1052012-08-24024 August 2012
American Society of Mechanical Engineers Section XI, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Cycle 15 Operation
ML12150A3672012-05-24024 May 2012
American Society of Mechanical Engineers, Section Xl Code, Inservice Inspection Program for the Unit 2 Third Ten-Year Inspection Interval, Request for Relief 2-ISI-28
ML11189A1122011-07-0606 July 2011
American Society of Mechanical Engineers Section Xl, Inservice Inspection, System Pressure Test, Containment Inservice Inspection, and Repair and Replacement Programs - Owner'S Activity Report for Cycle 16 Operation
ML1108300372011-03-21021 March 2011
American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI, Inservice Inspection Program, Third Ten-Year Inspection Interval, Request for Relief 3-ISI-26
ML1102603952011-01-21021 January 2011
American Society of Mechanical Engineers, Section XI Inservice Inspection Program for the Unit 3 Third Ten-Year Inspection Interval, Request for Relief 3-ISI-25
ML1018705992010-07-0101 July 2010
American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section Xl, Inservice Inspection Program, Request to Use Subsequent Edition of ASME Section Xl Code for Repair and Replacement Activities
ML1014700692010-05-24024 May 2010
American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI, System Pressure Test Program for the Fourth 10-Year Inspection Interval
ML1009205422010-03-31031 March 2010
American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section Xl, Inservice Inspection Program for the Fourth Ten-Year Inspection Interval
ML1005704132010-02-24024 February 2010
American Society of Mechanical Engineers, Section Xl, Inservice Inspection Program for the Unit 2 Third Ten-Year Inspection Interval, Request for Relief 2-1S1-18, Revision 2
ML1004801252010-02-11011 February 2010
American Society of Mechanical Engineers, Section XI Inservice Inspection Program for Unit 1 Second Ten-Year Inspection Interval, Request for Relief 1-ISI-26, Risk-Informed Inservice Inspection Program
ML1001917972010-01-15015 January 2010
American Society of Mechanical Engineers, Section XI Inservice Inspection Program for Browns Ferry Unit 1 Second Ten-Year Inspection Interval and Units 2 & 3 Third Ten-Year Inspection Interval, Request for Relief ISI-23
ML0928005122009-10-0505 October 2009
Comments Regarding NRC Letter and Associated Safety Evaluation for the Browns Ferry Nuclear Plant, Unit 2, Inservice Inspection Program Related to Examination of Piping Weld Overlays
ML0926606142009-09-21021 September 2009
American Society of Mechanical Engineers Section Xl, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs - Summary Report for Cycle 15 Operation
ML0928707662009-09-17017 September 2009
Response to NRC Request for Additional Information for Third 10-Year Interval Inservice Inspection Program Plan, Relief Request 2-ISI-19, Revision 1
ML1019002472009-07-0707 July 2009
American Society of Mechanical Engineers Section Xl, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs - Summary Report for Cycle 14 Operation
ML0914702082009-05-22022 May 2009
American Society of Mechanical Engineers (ASME) Section Xl, Inservice Inspection Program for the Third Ten-Year Inspection Interval - Request for Relief 2-1Sl-21, Revision 1 - Resubmittal
ML0913906422009-05-18018 May 2009
American Society of Mechanical Engineers Section XI, Inservice Inspection Program - Request for Relief 2-ISI-21, Revision 1 - Examination of Piping Weld Overlays
ML0906304232009-03-0202 March 2009
American Society of Mechanical Engineers Section XI, Inservice Inspection, System Pressure Test, Containment Inspection (IWE, and Repair and Replacement Programs - Summary Reports for Cycle 7 Operation
2024-06-23
[Table view]
Category:Letter
MONTHYEARIR 05000259/20240102024-11-12012 November 2024
Design Basis Assurance Inspection Program Inspection Report 05000259/2024010 and 05000260/2024010 and 05000296/2024010
IR 05000259/20240032024-11-0404 November 2024
Integrated Inspection Report 05000259/2024003 and 05000260/2024003 and 05000296/2024003
CNL-24-043, Application for Subsequent Renewed Operating Licenses, Second Safety Supplement2024-11-0101 November 2024
Application for Subsequent Renewed Operating Licenses, Second Safety Supplement
ML24305A1692024-10-31031 October 2024
Site Emergency Plan Implementing Procedure Revision
05000259/LER-2024-003, Valid Specified System Actuation Caused the Automatic Start of Emergency Diesel Generators2024-10-29029 October 2024
Valid Specified System Actuation Caused the Automatic Start of Emergency Diesel Generators
05000259/LER-2024-001-02, Secondary Containment Isolation Valve Inoperable Due to Mechanical Failure2024-10-28028 October 2024
Secondary Containment Isolation Valve Inoperable Due to Mechanical Failure
ML24299A2632024-10-25025 October 2024
Response to Apparent Violation in NRC Inspection Report 05000260/2024090, EA-24-075
ML24289A1232024-10-24024 October 2024
Letter to James Barstow Re Environmental Scoping Summary Report for Browns Ferry
CNL-24-074, Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-10-23023 October 2024
Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revisions
ML24308A0042024-10-16016 October 2024
Ahc 24-1578 Environmental Review of the Browns Ferry Nuclear Plant, Units 1, 2 and 3 Subsequent License Renewal Application Limestone County
CNL-24-077, Application for Subsequent Renewed Operating Licenses, Response to Request for Additional Information, Set 12024-10-0909 October 2024
Application for Subsequent Renewed Operating Licenses, Response to Request for Additional Information, Set 1
ML24270A2162024-09-27027 September 2024
Notice of Intentions Regarding Preliminary Finding from NRC Inspection Report 05000260/2024090, EA-24-075
ML24262A1502024-09-24024 September 2024
Requalification Program Inspection - Browns Ferry Nuclear Plant
CNL-24-060, Supplement to Request for Approval of the Tennessee Valley Authority Nuclear Quality Assurance Program Description2024-09-24024 September 2024
Supplement to Request for Approval of the Tennessee Valley Authority Nuclear Quality Assurance Program Description
ML24262A0602024-09-23023 September 2024
Summary of August 19, 2024, Meeting with Tennessee Valley Authority Regarding a Proposed Supplement to the Tennessee Valley Authority Nuclear Quality Assurance Plan
ML24263A2952024-09-19019 September 2024
Site Emergency Plan Implementing Procedure Revision
CNL-24-065, Tennessee Valley Authority – Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-09-18018 September 2024
Tennessee Valley Authority – Central Emergency Control Center Emergency Plan Implementing Procedure Revisions
IR 05000260/20240902024-09-17017 September 2024
NRC Inspection Report 05000260/2024090 and Preliminary White Finding and Apparent Violation - 1
CNL-24-062, Cycle 16 Reload Analysis Report2024-09-16016 September 2024
Cycle 16 Reload Analysis Report
ML24255A8862024-09-10010 September 2024
Core Operating Limits Report for Cycle 16 Operation, Revision 0
IR 05000259/20244042024-09-0303 September 2024
Cyber Security Inspection Report 05000259/2024404 and 05000260-2024404 and 05000296/2024404-Cover Letter
ML24239A3332024-09-0303 September 2024
Full Audit Plan
IR 05000259/20240052024-08-26026 August 2024
Updated Inspection Plan for Browns Ferry Nuclear Plant, Units 1, 2 and 3 - Report 05000259/2024005, 05000260/2024005 and 05000296/2024005
ML24225A1682024-08-16016 August 2024
– Notification of Inspection and Request
ML24219A0272024-08-0606 August 2024
Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations
IR 05000259/20244022024-08-0606 August 2024
Security Baseline Inspection Report 05000259/2024402 and 05000260/2024402 and 05000296/2024402
IR 05000259/20240022024-08-0202 August 2024
Brown Ferry Nuclear Plant – Integrated Inspection Report05000259/2024002 and 05000260/2024002 and 05000296/2024002
ML24199A0012024-07-22022 July 2024
Clarification and Correction to Exemption from Requirement of 10 CFR 37.11(c)(2)
ML24172A1342024-07-15015 July 2024
Exemptions from 10 CFR 37.11(C)(2) (EPID L-2023-LLE-0024) - Letter
ML24183A4142024-07-10010 July 2024
– License Renewal Regulatory Limited Scope Audit Regarding the Environmental Review of the License Renewal Application (EPID Number: L-2024-SLE-0000) (Docket Numbers: 50-259, 50-260, and 50-296)
05000296/LER-2024-003, Main Steam Relief Valves Lift Settings Outside of Technical Specifications Required Setpoints2024-07-0808 July 2024
Main Steam Relief Valves Lift Settings Outside of Technical Specifications Required Setpoints
05000259/LER-2024-001-01, Inoperability of Unit 3 Diesel Generator Due to Relay Failure2024-07-0303 July 2024
Inoperability of Unit 3 Diesel Generator Due to Relay Failure
ML24184A1142024-07-0202 July 2024
Site Emergency Plan Implementing Procedure Revision
ML24183A3842024-07-0101 July 2024
Registration of Use of Cask to Store Spent Fuel (MPC-364, -365)
ML24179A0282024-06-26026 June 2024
Evaluation of Effects of Out-of-Limits Condition as Described in IWB-3720(a)
05000259/LER-2024-002, Reactor Scram Due to Generator Step-Up Transformer Failure2024-06-24024 June 2024
Reactor Scram Due to Generator Step-Up Transformer Failure
ML24175A0042024-06-23023 June 2024
Interim Report of a Deviation or Failure to Comply Associated with a Valve in the Unit 3 High Pressure Coolant Injection System
ML24176A1132024-06-23023 June 2024
American Society of Mechanical Engineers, Section XI, Fourth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owner’S Activity Report Cycle 21 Oper
ML24089A1152024-06-21021 June 2024
Transmittal Letter, Environmental Assessments and Findings of No Significant Impact Related to Exemption Requests from 10 CFR 37.11(c)(2)
ML24155A0042024-06-18018 June 2024
Proposed Alternative to the Requirements of the ASME Code (Revised Alternative Request 0-ISI-47)
ML24158A5312024-06-0606 June 2024
Registration of Use of Cask to Store Spent Fuel (MPC-361, -362, -363)
ML24071A0292024-06-0505 June 2024
Subsequent License Renewal Application Enclosure 3 - Proprietary Determination Letter
ML24068A2612024-06-0505 June 2024
SLRA Fluence Methodology Report - Proprietary Determination Letter
ML24151A6322024-05-30030 May 2024
Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report
IR 05000259/20244032024-05-22022 May 2024
– Security Baseline Report 05000259/2024403 and 05000260/2024403 and 05000296/2024403
05000260/LER-2024-002, High Pressure Coolant Injection Inoperable Due to Rupture Disc Failure and Resulting System Isolation2024-05-20020 May 2024
High Pressure Coolant Injection Inoperable Due to Rupture Disc Failure and Resulting System Isolation
ML24141A0482024-05-17017 May 2024
EN 56958_1 Ametek Solidstate Controls, Inc
ML24136A0702024-05-15015 May 2024
2023 Annual Radiological Environmental Operating Report
IR 05000259/20240012024-05-14014 May 2024
Integrated Inspection Report 05000259/2024001, 05000260/2024001, and 05000296/2024001
CNL-24-040, Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-05-0808 May 2024
Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revisions
2024-09-03
[Table view] |
Text
VALLEY TENNESSEE 1\\14 AUTHORITY
Post Office Box 2000, Decatur, Alabama 35609-2000
June 20, 2023 10 CFR 50.55a
ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001
Browns Ferry Nuclear Plant, Unit 2 Renewed Facility Operating License No. DPR-52 NRC Docket No. 50-260
Subject:
American Society of Mechanical Engineers,Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation
The Tennessee Valley Authority is submitting the Br owns Ferry Nuclear Plant (BFN), American Society of Mechanical Engineers (ASME),Section XI, Owners Activity Report for BFN, Unit 2, Cycle 22 Operation. The report is contained in the enclosure to this letter and is in accordance with the requirements of ASME Code Case N-532-5, Repair/Replacement Documentation Requirements and Inservice Summary Report Preparation and Submission,Section XI, Division 1.
The report is an overview of the inservice examination results that were performed on components within the ASME Section XI boundary, up to and including the BFN, Unit 2, Cycle 22 refueling outage, during the third inspection period of the Fifth 10 Year Inspection Interval. The applicable provisions of the ASME Code Case N-532-5 require t hat this report be submitted within 90 calendar days of the completion of each refueling outage. The BFN, Unit 2, Cycle 22 refueling outage ended on March 22, 2023. Accordingly, this submittal is due by June 20, 2023.
U.S. Nuclear Regulatory Commission Page 2 June 20, 2023
There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact C. L. Vaughn, Site Licensing Manager, at (256) 729-2636.
Respectfully,
Manu Sivaraman Site Vice President
Enclosure:
American Society of Mechanical Engineers,Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation
cc (Enclosure): NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Project Manager - Browns Ferry Nuclear Plant
Enclosure
Tennessee Valley Authority
Browns Ferry Nuclear Plant Unit 2
American Society of Mechanical Engineers,Section XI, Fifth 10 Year Inspection Interval, Inservice Inspection, System Pressure Test, Containment Inspection, and Repair and Replacement Programs, Owners Activity Report for Browns Ferry Nuclear Plant, Unit 2, Cycle 22 Operation
See Enclosed
FORM OAR~1 OWNER'S ACTIVITY REPORT
Report Numbe r --"8'-'-F...,_N,..,U"-'2'-'-R_,_,2.,2~---- - ------- ----- ----- ------- ------- -
Plant Browns Ferry Nuc lear Pl<1nl. P 0. Box 2000 Decatur AL 35609
Unit No. - ---,-~2~-,- al service date March 1 1975 Refueling Outage no. --"'R~e~fl~'e"'li'-'n"'g_,O"-'u'-'-l'"ag"'e"-"-2,._2 __
(ir apph.: abl iC!-) Commerc i
Current Inspect ion Interval Fifth Ten Year inspection Interval
{ 151. 2M, 31 C1. m tier)
Current Inspection Period T~h~i~rd~P~e~ri=od~------- - -------::-c--::: -,-,-,---- ------ -------- p s,. 2n d, :!;, d)
2007 Edition, 2008 Addenda (ISi)
Edition and Addenda of Section XI applicable lo l11e inspection plans =2=0~13~E~d~it,~*o~n~(C=IS~IL) ---- ------ -------~
O-TPP-ENG-376, Revision 0004, 11/18/2022 O-Tl-364, Rev ision 0025, 02/06/2023 Dale and Rev ision of inspection plan 0-TPP-E NG-467 Revision 0001 01/12/2023
Edition and Addenda of Section XI applicable lo repairs and replacements, if different than the inspection plan ~N=IA~-
Code Cases used for inspection and evaluation : N-532-5 N-613-2 N-716-1 N-751 N-854. and N-864 (1I ap p hc.able, 1nc lu d 1r\\Q Crl:!>C~ mQd1f;ed b)' C a se N -S-32 anel la!Cr fC','1$kil'I~)
CERTIFICATE OF CONFORMANCE
I certify that (a) lhe statements made in this report are correc t (b) the ex aminations and tests meet the Inspection Plan as required by the ASME Code,Section XI ; and (c) the repair/replacement act ivities and evaluations supporting the completion of U2R22 conform to the requ iremen ts of Section XL '"' '"'""!l oota~ c ou mne r) s,,,.,f?~
CERTIFICATE OF INSERVICE INSPECTION
I, the und ersigned. holding a va lid commiss ion issued by the National Board of Boiler and Pressure Vessel Inspectors and employed by The Hartford Steam Bo iler lnspeclion and Insurance Company of Hartford Connect icut have inspected the items described in this Owne rs Activity Report and state that, to the best of my knowledge a nd belief, lhe Owner has performed all activities represented by this report in accordance with the requirements of Section XI.
By signing this certificate neither the Ins pec tor nor his emp loyer makes any warranty, expressed or implied, concerning the repair/ rep lacemen t act ivities and evalua tion described in this report. Furthermore, ne ither the Inspector nor his employer shall be liable in any manner for any personal 1n1ury o(. roperty damage or a loss of any kind arising from or connected with this Inspection P/~7, Comm issions f'Sf3. I ~q 71 L, N R...
FORM OAR-1 OWNER'S ACTIVITY REPORT
TABLES Report Number BFNU2R22 -------------------------------
PI ant Browns Ferry Unit No. 2 Commercia l service date 03/01/1975 Refueling outage no. 22 - ---
Cur rent inspection interval 5th Current inspection peri----- ----- - -od 3rd TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRE EVALUATIONS FOR CONTINUED SERVICE Exam ination Category and Item Number Item Description Evaluation Description F-A / F1.30C Residual Heat Removal Service Water NOi U2R22 -001 Variable Suppo rt, 2-4 7B450H0041 A variable spring support setting was found out of tolerance/ out of its load seeing range. It was determined that the as-found setting was w ithin the allowable working range, and that the va riable spring support wou ld have bee n ab le to perform its intended design function w ithout any adve rse effect. The spring was reset to within the design limit.
FORM OAR-1 OWNER ' S ACTIVITY REPORT
TABLES Report Number BFNU2R22 ---- -------- ---- -------- ------
PI ant Browns Ferry Unit No. 2 Commercia l service date 03/01/1975 Refueling outage no. 22 - ---
Current inspection interval 5th ----- Current inspection period 3rd - ------
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description Description of Work Date Repair/Replacement Class Completed Plan Number Rep lacement of BFN-2-FCV-068-0003 valve dra in line (3/4 ") leak.
Through wall leak was Flaw was removed with the d rain 1 line identified Design change was deta ia n d replaced with a 2 " line. 3-14-2023 123498959 led in Eng ineering Change Paper (ECP) number BFN-23 -018.
FORM OAR-1 OWNER'S ACTIVITY REPORT
TABLES Report Number BFNU2R22 --- ----------------------- ----
PI ant Browns Ferry Unit No. 2 Commercial service date 03/01/1975 Refueling outage no. 22 ----
Current inspection interval 5th Current inspection period 3rd ------------
REPORTING REQUIRED BY 10 CFR 50.55a(b)(2)(ix)(A)
ASME Section XI, Subsection IWE Steel Containment Vessel Inspection program
10 CFR 50.55a(b)(2)(ix)(A) requires reporting of the degradation assessment for inaccessible areas when conditions are identified in accessible areas during the performance of the ASME Section XI, Subsection IWE Steel Containment Vessel (SCV)
Inspection Program that could indicate the presence of or result in degradation to such inaccessible areas.
Browns Ferry Unit 2 is currently in the Third IWE Inspection Interval, Second Period. During BFN U2R22, there were no degradation assessments of inaccessible areas as a result of conditions identified in accessible areas during performance of the ASME Section XI, Subsection IWE SCV Inspection Program.
Examination Component Indication Acceptability/Corrective Action Inaccessible Additional Category and Identifier Description Area Samples Item Number (Location and Evaluation)
E-A, Item E 1.30 MSB-2-1 Mechanical During BFN 2R22, inspection of None None (Moisture Seal Damage the drywell Moisture Seal Barrier Barrier) identified unsatisfactory locations that cou ld potentially permit moisture intrusion into the inaccessible areas beneath the barrier. The MSB was excavated in these locations to make the steel containment vessel accessible and visually examined with no reportable conditions identified. Conditions were corrected by cleaning and replacing damaged areas of the MSB with no Repair/
Replacement Activity required.
The MSB was repaired with examination of the repaired sections having no reportable conditions. A post repair visual examination of the entire MSB was completed with no reportable conditions identified.
