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Category:Inservice/Preservice Inspection and Test Report
MONTHYEARRS-23-121, Sixth Ten-Year Interval Inservice Testing Program2023-11-30030 November 2023 Sixth Ten-Year Interval Inservice Testing Program SVPLTR 23-0004, Owner'S Activity Report Submittal Dresden Nuclear Power Station 6500 North Dresden Road Morris, Il 60450 Fifth 10-Year Interval 2022 Refueling Outage Activities2023-02-10010 February 2023 Owner'S Activity Report Submittal Dresden Nuclear Power Station 6500 North Dresden Road Morris, Il 60450 Fifth 10-Year Interval 2022 Refueling Outage Activities ML21043A2532021-02-0303 February 2021 Owner'S Activity Report Submittal Fifth 10-Year Interval 2020 Refueling Outage Activities SVPLTR 20-0010, Fifth 10-Year Interval 2019 Refueling Outage Activities2020-02-13013 February 2020 Fifth 10-Year Interval 2019 Refueling Outage Activities RS-16-130, Inservice Inspection Interval Relief Request 15R-082016-06-30030 June 2016 Inservice Inspection Interval Relief Request 15R-08 ML16189A2182016-06-29029 June 2016 BWR Vessel and Internals Project - Vessel Internals Inspection Summaries for Fall 2015 Outages RS-15-126, Additional Information Supporting Relief Request I4R-17, Inservice Inspection Program Relief Request Regarding Examination Coverage for the Fourth Inservice Inspection Interval2015-05-21021 May 2015 Additional Information Supporting Relief Request I4R-17, Inservice Inspection Program Relief Request Regarding Examination Coverage for the Fourth Inservice Inspection Interval ML13316B8342013-11-0808 November 2013 Fifth (5 Th) Ten-Year Interval Inservice Testing Program RS-13-164, Clarification Regarding the Testing Frequency for Fifth Inservice Testing Interval Relief Request RV-23H2013-06-13013 June 2013 Clarification Regarding the Testing Frequency for Fifth Inservice Testing Interval Relief Request RV-23H SVPLTR 13-0008, Owner'S Activity Report Submittal, Fourth 10-Year Interval 2012 Refueling Outage Activities2013-03-0404 March 2013 Owner'S Activity Report Submittal, Fourth 10-Year Interval 2012 Refueling Outage Activities RS-13-005, Supplemental to Dresden and Quad Cities Fifth Inservice Inspection Interval Relief Request I5R-032013-01-10010 January 2013 Supplemental to Dresden and Quad Cities Fifth Inservice Inspection Interval Relief Request I5R-03 RS-12-155, Submittal of Relief Requests Associated with the Fifth Lnservice Testing Interval2012-10-30030 October 2012 Submittal of Relief Requests Associated with the Fifth Lnservice Testing Interval SVPLTR 11-0010, Owner'S Activity Report Submittal Fourth 10-Year Interval 2010 Refueling Outage Activities2011-02-18018 February 2011 Owner'S Activity Report Submittal Fourth 10-Year Interval 2010 Refueling Outage Activities SVPLTR 10-0010, Submittal of Owner'S Activity and Fourth 10-Year Interval 2009 Refueling Outage Activities Report2010-02-25025 February 2010 Submittal of Owner'S Activity and Fourth 10-Year Interval 2009 Refueling Outage Activities Report SVPLTR 08-0007, Owner'S Activity Report Submittal - Fourth 10-Year Interval 2007 Refueling Outage Activities2008-02-12012 February 2008 Owner'S Activity Report Submittal - Fourth 10-Year Interval 2007 Refueling Outage Activities ML0726305512007-09-20020 September 2007 Notification of NRC Inspection and Request for Information RS-07-058, Amergen/Exelon Nuclear - Request for Relief - Use of the Boiling Water Reactor Vessel and Internals Project (BWRVIP) Guidelines in Lieu of Specific ASME Code Requirements2007-04-19019 April 2007 Amergen/Exelon Nuclear - Request for Relief - Use of the Boiling Water Reactor Vessel and Internals Project (BWRVIP) Guidelines in Lieu of Specific ASME Code Requirements SVPLTR 05-0007, Owner'S Activity Report Submittal Fourth 10-Year Interval 2004 Refueling Outage Activities2005-03-0707 March 2005 Owner'S Activity Report Submittal Fourth 10-Year Interval 2004 Refueling Outage Activities SVPLTR 05-0008, Final Third 10-Year Interval Inservice Inspection (ISI) Summary Report2005-03-0707 March 2005 Final Third 10-Year Interval Inservice Inspection (ISI) Summary Report SVPLTR 04-0002, Owner'S Activity Report Submittal for Fourth 10-Year Interval 2003 Refueling Outage Activities2004-02-0909 February 2004 Owner'S Activity Report Submittal for Fourth 10-Year Interval 2003 Refueling Outage Activities SVPLTR 04-0001, Final Third 10-Year Interval Inservice Inspection (ISI) Summary Report2004-02-0909 February 2004 Final Third 10-Year Interval Inservice Inspection (ISI) Summary Report RS-03-157, Additional Information Regarding Inservice Testing Program Relief Requests2003-08-0606 August 2003 Additional Information Regarding Inservice Testing Program Relief Requests ML0302900902003-01-24024 January 2003 Inservice Inspection (ISI) Summary Report Fall 2002 Inservice Inspection Period ML0226107092002-09-0606 September 2002 Fourth Interval Inservice Inspection Program Plan, Attachment C ML0226101532002-09-0606 September 2002 Fourth Interval Inservice Inspection Program Plan, Attachments a and B ML0204506082002-02-0505 February 2002 Inservice Inspection (ISI) Summary Report Fall 2001 Inservice Inspection Period 2023-02-10
[Table view] Category:Letter type:SVPLTR
MONTHYEARSVPLTR 23-0037, Core Operating Limits Report for Cycle 292023-11-29029 November 2023 Core Operating Limits Report for Cycle 29 SVPLTR 23-0021, Registration of Use of Casks to Store Spent Fuel2023-06-20020 June 2023 Registration of Use of Casks to Store Spent Fuel SVPLTR 23-0018, Submittal of 2022 Annual Radiological Environmental Operating Report2023-05-15015 May 2023 Submittal of 2022 Annual Radiological Environmental Operating Report SVPLTR 23-0019, ILT 22-1 (2023-301) Svpltr 23-0019 Post-Exam Submittal Letter (1)2023-05-0101 May 2023 ILT 22-1 (2023-301) Svpltr 23-0019 Post-Exam Submittal Letter (1) SVPLTR 23-0014, Annual Dose Report for 20222023-04-15015 April 2023 Annual Dose Report for 2022 SVPLTR 23-0004, Owner'S Activity Report Submittal Dresden Nuclear Power Station 6500 North Dresden Road Morris, Il 60450 Fifth 10-Year Interval 2022 Refueling Outage Activities2023-02-10010 February 2023 Owner'S Activity Report Submittal Dresden Nuclear Power Station 6500 North Dresden Road Morris, Il 60450 Fifth 10-Year Interval 2022 Refueling Outage Activities SVPLTR 22-0037, Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report2022-09-0707 September 2022 Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report SVPLTR 22-0024, Registration of Use of Casks to Store Spent Fuel2022-06-16016 June 2022 Registration of Use of Casks to Store Spent Fuel SVPLTR 22-0016, Unit 3, Deviation from BWR Vessel and Internals Project (BWRVIP) Guideline - Inspection of Unit 2 and Unit 3 Shroud Vertical Welds2022-06-0808 June 2022 Unit 3, Deviation from BWR Vessel and Internals Project (BWRVIP) Guideline - Inspection of Unit 2 and Unit 3 Shroud Vertical Welds SVPLTR 22-0017, Registration of Use of Casks to Store Spent Fuel2022-05-25025 May 2022 Registration of Use of Casks to Store Spent Fuel SVPLTR 21-0061, Core Operating Limits Report for Dresden Unit 2 Cycle 282021-11-19019 November 2021 Core Operating Limits Report for Dresden Unit 2 Cycle 28 SVPLTR 21-0057, Submittal of 10 CFR 72.48 Evaluation Summary Report2021-10-15015 October 2021 Submittal of 10 CFR 72.48 Evaluation Summary Report SVPLTR 21-0030, Registration of Use of Casks to Store Spent Fuel2021-06-0202 June 2021 Registration of Use of Casks to Store Spent Fuel SVPLTR 21-0028, 2020 Annual Radiological Environmental Operating Report2021-05-0606 May 2021 2020 Annual Radiological Environmental Operating Report SVPLTR 21-0027, Radioactive Effluent Release Report and Offsite Dose Calculation Manual2021-04-22022 April 2021 Radioactive Effluent Release Report and Offsite Dose Calculation Manual SVPLTR 21-0005, Submittal of Analytical Evaluation of Isolation Condenser Nozzle to Shell Weld Flaw Indications (ISI Weld 3/2/1302A-12/12-8)2021-01-29029 January 2021 Submittal of Analytical Evaluation of Isolation Condenser Nozzle to Shell Weld Flaw Indications (ISI Weld 3/2/1302A-12/12-8) SVPLTR 20-0053, Deviation from BWR Vessel and Internals Project (BWRVIP) Guideline - Inspection of Unit 3 Top Guide Rim Weld2020-10-15015 October 2020 Deviation from BWR Vessel and Internals Project (BWRVIP) Guideline - Inspection of Unit 3 Top Guide Rim Weld SVPLTR 20-0045, Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report2020-09-0101 September 2020 Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report SVPLTR 20-0037, Response to Apparent Violation in NRC Inspection Report 05000237/2020012 and 05000249/2020012; EA-20-0532020-07-0202 July 2020 Response to Apparent Violation in NRC Inspection Report 05000237/2020012 and 05000249/2020012; EA-20-053 SVPLTR 20-0027, Registration of Use of Casks to Store Spent Fuel2020-05-14014 May 2020 Registration of Use of Casks to Store Spent Fuel SVPLTR 20-0014, Submittal of 2019 Radioactive Effluent Release Report and Offsite Dose Calculation Manual2020-04-21021 April 2020 Submittal of 2019 Radioactive Effluent Release Report and Offsite Dose Calculation Manual SVPLTR 20-0010, Fifth 10-Year Interval 2019 Refueling Outage Activities2020-02-13013 February 2020 Fifth 10-Year Interval 2019 Refueling Outage Activities SVPLTR 19-0049, Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report2019-09-10010 September 2019 Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report SVPLTR 19-0031, Registration of Use of Casks to Store Spent Fuel2019-06-14014 June 2019 Registration of Use of Casks to Store Spent Fuel SVPLTR 19-0020, Submittal of 2018 Radioactive Effluent Release Report and Offsite Dose Calculation Manual2019-04-19019 April 2019 Submittal of 2018 Radioactive Effluent Release Report and Offsite Dose Calculation Manual SVPLTR 19-0005, Owner'S Activity Report Submittal Fifth 10-Year Interval 2018 Refueling Outage Activities2019-02-0808 February 2019 Owner'S Activity Report Submittal Fifth 10-Year Interval 2018 Refueling Outage Activities SVPLTR 18-0025, Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report2018-08-15015 August 2018 Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report SVPLTR 18-0020, Corrected 2017 Radioactive Effluent Release Report2018-06-28028 June 2018 Corrected 2017 Radioactive Effluent Release Report SVPLTR 18-0018, Registration of Use of Casks to Store Spent Fuel2018-06-14014 June 2018 Registration of Use of Casks to Store Spent Fuel SVPLTR 18-0012, Submittal of 2017 Radioactive Effluent Release Report and Offsite Dose Calculation Manual2018-04-24024 April 2018 Submittal of 2017 Radioactive Effluent Release Report and Offsite Dose Calculation Manual SVPLTR 18-0007, Security Plan, Training and Qualification Plan, and Safeguards Contingency Plan, Revisions 17 and 182018-03-0101 March 2018 Security Plan, Training and Qualification Plan, and Safeguards Contingency Plan, Revisions 17 and 18 SVPLTR 17-0033, Submittal of Corrected 2016 Radioactive Effluent Release Report for January Through December2017-08-29029 August 2017 Submittal of Corrected 2016 Radioactive Effluent Release Report for January Through December SVPLTR 17-0026, Registration of Use of Casks to Store Spent Fuel2017-06-0606 June 2017 Registration of Use of Casks to Store Spent Fuel SVPLTR 17-0017, Submittal of 2016 Radioactive Effluent Release Report2017-04-26026 April 2017 Submittal of 2016 Radioactive Effluent Release Report SVPLTR 16-0027, 2016 Dresden Nuclear Station Initial License Examination Proposed Exam Files - Licensee Letter Transmitting the Proposed Examination/Test to the NRC2016-12-0101 December 2016 2016 Dresden Nuclear Station Initial License Examination Proposed Exam Files - Licensee Letter Transmitting the Proposed Examination/Test to the NRC SVPLTR 16-0061, Core Operating Limits Report for Unit 3 Cycle 252016-11-21021 November 2016 Core Operating Limits Report for Unit 3 Cycle 25 SVPLTR 16-0018, Transmittal of 2015 Radioactive Effluent Release Report and Offsite Dose Calculation Manual2016-04-25025 April 2016 Transmittal of 2015 Radioactive Effluent Release Report and Offsite Dose Calculation Manual SVPLTR 16-0017, Submittal of Post Accident Monitoring Report Instrumentation2016-04-0808 April 2016 Submittal of Post Accident Monitoring Report Instrumentation SVPLTR 16-0001, Cyber-Security Ms 1 Thru 7 Inspection 2014 405; Notification of Completion of Corrective Actions2016-01-21021 January 2016 Cyber-Security Ms 1 Thru 7 Inspection 2014 405; Notification of Completion of Corrective Actions SVPLTR 15-0070, Core Operating Limits Report for Cycle 24A2015-12-15015 December 2015 Core Operating Limits Report for Cycle 24A SVPLTR 15-0065, Core Operating Limits Report for Cycle 252015-11-16016 November 2015 Core Operating Limits Report for Cycle 25 SVPLTR 15-0059, Core Operating Limits Report, Cycle 242015-10-25025 October 2015 Core Operating Limits Report, Cycle 24 SVPLTR 15-0056, 1, 2 and 3 - Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report2015-09-0404 September 2015 1, 2 and 3 - Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report SVPLTR 15-0055, Notification of Readiness for NRC 95001 Inspection2015-08-25025 August 2015 Notification of Readiness for NRC 95001 Inspection SVPLTR 15-0052, Response to Preliminary White Finding2015-08-14014 August 2015 Response to Preliminary White Finding SVPLTR 15-0046, ISFSI - Registration of Use of Casks to Store Spent Fuel2015-07-17017 July 2015 ISFSI - Registration of Use of Casks to Store Spent Fuel SVPLTR 15-0043, Registration of Use of Casks to Store Spent Fuel2015-06-12012 June 2015 Registration of Use of Casks to Store Spent Fuel SVPLTR 15-0034, 2014 Annual Radiological Environmental Operating Report2015-05-14014 May 2015 2014 Annual Radiological Environmental Operating Report SVPLTR 15-0020, Written Position on Preliminary White Finding Discussed in NRC Inspection Report 05000237/2014005; 05000249/20140052015-03-0202 March 2015 Written Position on Preliminary White Finding Discussed in NRC Inspection Report 05000237/2014005; 05000249/2014005 SVPLTR 15-0014, Owner'S Activity Report Submittal Fifth 10-Year Interval 2014 Refueling Outage Activities2015-02-11011 February 2015 Owner'S Activity Report Submittal Fifth 10-Year Interval 2014 Refueling Outage Activities 2023-06-20
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Exelon Generation Company, LLC www.exeloncorp.com Exelkn Dresden Nuclear Power Station Nuclear 65o0 North Dresden Road Morris, IL 60450-9765 February 18, 2011 SVPLTR #11-0010 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station, Unit 3 Facility Operating License No. DPR-25 NRC Docket No. 50-249
Subject:
Owner's Activity Report Submittal Fourth 10-Year Interval 2010 Refueling Outage Activities This letter submits the Owner's Activity Report (i.e., Form OAR-i) and Invessel Visual Inspection (IVVI) Report for the Dresden Nuclear Power Station (DNPS) Unit 3 refueling outage (D3R21) which began on November 1, 2010, and was completed on November 26, 2010. This is the first refueling outage conducted in the third inspection period of the fourth 10-year inservice inspection interval for DNPS Unit 3. A copy of the Owner's Activity Report and IVVI Report are provided as attachments to this letter.
This Owner's Activity Report is submitted in accordance with American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code Case N-532-4, "Repair/Replacement Activity Documentation Requirements and Inservice Summary Report Preparation and Submission," and Regulatory Guide 1.147, "Inservice Inspection Code Case Acceptability, ASME Section Xl, Division 1," Revision 15. Code Case N-532-4 requires an Owner's Activity.
Report Form OAR-1 to be prepared and certified upon completion of each refueling outage. In accordance with the conditions of Code Case N-532-4, this OAR-1 form is being submitted within ninety days of the completion of the refueling outage.
The IVVI results are provided to report vessel internal inspections and to support B-N-1 and B-N-2 relief request exam completion.
AL0L4
February 18, 2011 U. S. Nuclear Regulatory Commission Page 2 Should you have any questions concerning this letter, please contact Mr. Dennis Leggett, Regulatory Assurance Manager, at (815) 416-2800.
Respectfully, Site Vice President Dresden Nuclear Power Station Attachments: Owner's Activity Report, Form OAR-1 Invessel Visual Inspection Report cc: Regional Administrator - Region III NRC Senior Resident Inspector, Dresden Station
FORM OAR-i OWNER'S ACTIVITY REPORT Report Number Refueling Outage D3R21 OAR-1 Plant Dresden Nuclear Power Station, 6500 N. Dresden Road, Morris, IL 60450 Unit No. 3 Commercial Service Date 11/16/1971 Refueling Outage Number D3R21 (if applicable)
Current Inspection Interval 4 th Inspection Interval (1st, 2', 3', 4', other)
Current Inspection Period 3 rd Inspection Period
( 1 st, 2 nd, 3 d )
Edition and Addenda of Section XI applicable to the Inspection Plans 1995 Edition with 1996 Addenda Date / Revision of Inspection Plans 1/20/2010/Revision 7 Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans N/A Code Cases used: N-416-3, N-649 CERTIFICATE OF CONFORMANCE I certify that (a) the 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 repair/replacement activities and evaluations supporting the completion of D3R21 conform to the requirements of Section XI (refueling outage number)
Signed Lk . I, ,ISI Coordinator Date I (Owner or Owner's designee. Title)
CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Illinois and employed by The HSBCT of Hartford , Connecticut have inspected the items described inthis Owner's Activity Report, and state that to the best of my knowledge and belief, the Owner has performed all activities represented by this report inaccordance with the requirements of Section XI By signing this certificate neither the Inspector nor his employer makes any warranty expressed or implied concerning the repair/
replacement activities and evaluation described in this report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection Commissions IL 1546 (Inspector's Signature) National Board, State, Province, and Endorsements Date -- ___ J111 D3R21 OAR-1 Page 1 of 4
TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION1 FOR CONTINUED SERVICE Examination Category and Item Number Item Description Evaluation Description N/A N/A N/A 4 4 4 4 4 4 4 4 4 i 4 4 4
I 4 4 4 4 4 4 4 4 4 4 A 4 4 4 4 1 A 4 D3R21 OAR-1 Page 2 of 4
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description Date Repair/
Class Description Of Work Completed Replacement Plan Number 3 Pitting Found on Unit 3 DGCW Flanges Repaired Flanges Thru Weld Build Up and 1/27/10 RRP 3-10-001 Machining
.3 Pitting Found on Unit 2/3 DGCW Flanges Repaired Flanges Thru Weld Build Up, Machining 4/01/10 RRP 3-10-019 and Replacement 2 Indication on Torus/ECCS Ring Header Saddle Removed Indication Thru Surface Conditioning 11/11/10 RRP 3-10-083 Support __
2 Loose Nuts on Iso Condenser Support Tightened Nuts 11/18/10 RRP 3-10-090 1 Indication On RPV Head Nut 37 Replaced Nut 37 11/23/10 RRP 3-10-091 1 Snubber 3-203-34 Failed Functional Test Replaced snubber 11/14/10 RRP 3-10-087 1 Snubber 3-3204E-38 Failed Functional Test Replaced snubber 11/14/10 RRP 3-10-088 1 Snubber 3-3001A-46 Failed Functional Test Replaced snubber 11/13/10 RRP 3-10-015 1 Snubber 3-3001D-48 Failed Functional Test Replaced snubber 11/4/10 RRP 3-10-016 1 Snubber 3-3019D-55 Failed Functional Test Replaced snubber 11/9/10 RRP 3-10-028 1 Snubber 3-3001A-42 Failed Functional Test Replaced snubber 11/09/10 RRP 3-10-031 1 Snubber 3-3001A-47 Failed Functional Test Replaced snubber 11/6/10 RRP 3-10-032 1 Snubber 3-3001C-50 Failed Functional Test Replaced snubber 11/3/10 RRP 3-10-033 1 Snubber 3-3001B-41 Failed Functional Test Replaced snubber 11/9/10 RRP 3-10-034
__________ A_______________________________________________ a D3R21 OAR-1 Page 3 of 4
Dresden Unit 3 In-Vessel Visual Inspection Report Refueling Outage D3R21 The ASME Section Xl inspections credited during D3R21 IVVI activities include the once-per-period B-N-1 inspection of the reactor vessel interior and B-N-2 inspections of reactor vessel interior attachments. Credit is being taken for these examinations in accordance with Relief Request, "Alternative Requirements to ASME Section XI, B-N-1 and B-N-2 using BWRVIP Guidelines, Fleet Relief," submitted April 19, 2007, as approved in the Safety Evaluation dated April 30, 2008.
To implement the requirements of the Boiling Water Reactor Vessel Internals Program (BWRVIP), GE was contacted to perform the In-Vessel Visual Inspections (IVVI). The following components and assemblies were examined:
- 153 welds and components on jet pump assemblies in accordance with the BWR Jet Pump Assembly Inspection and Flaw Evaluation Guidelines (BWRVIP-41).
- Ten core spray piping welds and one core spray sparger bracket to shroud attachment weld in accordance with the BWR Core Spray Internals Inspection and Flaw Evaluation Guidelines (BWRVIP-18-A). Inspected the Core Spray lower sectional piping and hardware that was installed in D3R18.
- 14 shroud vertical welds in accordance with the BWR Core Shroud Inspection and Flaw Evaluation Guidelines (BWRVIP-76).
- Attachment welds for two core spray piping brackets and two dryer wall support lugs in accordance with BWR Vessel and Internals Project Lower Vessel ID Attachment Weld Inspection and Flaw Evaluation Guidelines (BWRVIP-48-A).
- Performed inspections of accessible stub tube and housing welds from two cells that were disassembled to install a plug in the bottom head drain in support of drain line valve maintenance (BWRVIP-48-A and B-N-2).
- Dryer examinations were performed for the second consecutive outage (new dryer installed in D3R19). All critical inspections were completed with no new indications. There was no evident change to the only indication previously identified in D3R20. This indication did not affect the structural integrity of the dryer or ability to remove moisture. Dryer inspections were performed in accordance with BWR Vessel and Internals Project Steam Dryer Inspection and Flaw Evaluation Guidelines (BWRVIP-139-A).
The following augmented examinations were also performed as part of the D3R21 IVVI activities:
- Five jet pump swing gate bolting tack welds were inspected for evidence of weld failure. These inspections were performed in response to previous tack weld failures.
- Inspected the eight feedwater sparger end bracket surfaces for evidence of wear. These inspections were a follow-up to evidence of wear from the pins observed during D3R20. Five of the eight brackets showed evidence of wear similar to that observed during D3R20. Dresden will continue to monitor this condition while long-term repair options are being evaluated.
- Six SRM/IRM dry tubes were inspected in accordance with SIL 409 guidance.
- One JP 11 auxiliary wedge was replaced due to previously identified wear.
- Inspected a steam separator guide rod top cone. The dryer had previously contacted the guide rod.
- Ultrasonic examinations were performed on the access hole cover welds in accordance with BWR Vessel and Internals Project Access Hole Cover Inspection and Flaw Evaluation Guidelines (BWRVIP-180).
The above BWRVIP and augmented examinations resulted in no indications identified in the reactor interior surface as defined in B-N-1 or the reactor interior attachments as defined by B-N-2.
D3R21 OAR-1 Page 4 of 4