ML19029B121
| ML19029B121 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/26/2019 |
| From: | Bennett Brady NRC/NRR/DMLR/MRPB |
| To: | Gallagher M Exelon Generation Co |
| Brady B, NRR-DMLR, 415-2981 | |
| References | |
| EPID L 2018 RNW 0012 | |
| Download: ML19029B121 (51) | |
Text
February 26, 2019 Mr. Michael Gallagher Vice President, License Renewal and Decommissioning Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348
SUBJECT:
PEACH BOTTOM ATOMIC POWER STATION UNITS 2 AND 3 - REPORT FOR THE OPERATING EXPERIENCE REVIEW AUDIT REGARDING THE SUBSEQUENT LICENSE RENEWAL APPLICATION REVIEW (EPID NO. L-2018-RNW-0012)
Dear Mr. Gallagher:
By letter dated July 10, 2018 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML18193A689), the Exelon Generation Company, LLC, (Exelon) submitted to the U.S. Nuclear Regulatory Commission (NRC or staff) an application to renew the Renewed Facility Operating License Nos. DPR-44 and DPR-56 for the Peach Bottom Atomic Power Station, Unit 2 and 3 (Peach Bottom), respectively. Exelon submitted the application pursuant to Title 10 of the Code of Federal Regulations Part 54, Requirements for Renewal of Operating Licenses for Nuclear Power Plants, for subsequent license renewal. The NRC staff completed its operating experience review audit at the Excel Services Corporation offices in Rockville, Maryland, from September 17 through September 27, 2018, in accordance with the operating experience review audit plan (ADAMS Accession No. ML18249A280). The audit report is enclosed.
If you have any questions, please contact me by telephone at 301-415-2981 or by e-mail at Bennett.Brady@nrc.gov Sincerely,
/RA/
Bennett Brady, Senior Project Manager License Renewal Projects Branch Division of Materials and License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278
Enclosure:
Audit Report cc w/encl: Listserv
- concurred by email OFFICE PM:MRPB:DMLR LA:MRPB:DMLR PM:MRPB:DMLR BC:MRPB:DMLR NAME BBrady YEdmonds BRogers EOesterle DATE 2/26/2019 2/20/2019 2/25/2019 2/25/2019 OFFICE PM:MRPB:DMLR NAME BBrady DATE 2/26/2019
Enclosure Audit Report Operating Experience Review Audit Regarding the Peach Bottom Atomic Power Station Units 2 and 3, Subsequent License Renewal Application September 17-27, 2018 Division of Materials and License Renewal Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION, DIVISION OF MATERIALS AND LICENSE RENEWAL Docket Nos:
50-277 and 50-278 License No:
Exelon Generation Company, LLC Facility:
Peach Bottom Atomic Power Station, Units 2 and 3 Location:
Rockville, Maryland Dates:
September 17 through 27, 2018 Reviewers:
B. Allik, Materials Engineer, Division of Materials and License Renewal (DMLR)
A. Buford, Structural Engineer, Division of Engineering (DE)
A. Chereskin, Chemical Engineer, DMLR G. Cheruvenki, Materials Engineer, DMLR S. Cuadrado de Jesus, Structural Engineer, DE R. Fitzpatrick, Electrical Engineer, DE B. Fu, Materials Engineer, DMLR W. Gardner, Physical Scientist, DMLR J. Gavula, Mechanical Engineer, DMLR D. Hoang, Structural Engineer, DE K. Hoffman, Materials Engineer, DMLR W. Holston, Senior Mechanical Engineer, DMLR A. Hovanec, Materials Engineer, DMLR A. Huynh, Materials Engineer, DMLR J. Jenkins, Materials Engineer, DMLR A. Johnson, Materials Engineer, DMLR S. Jones, Sr. Reactor Systems Engineer, Division of Safety Systems N. Khan Electrical Engineer, DE B. Lehman, Structural Engineer, DE J. Lopez, Structural Engineer, DE S. Min, Materials Engineer, DMLR D. Nguyen, Electrical Engineer, DE A. Prinaris, Structural Engineer, DE A. Rezai, Materials Engineer, DMLR M. Sadollah, Electrical Engineer, DE G. Thomas, Senior Structural Engineer, DE Approved By:
David Alley, Chief Vessels & Internals Branch Division of Materials and License Renewal Steve Bloom, Chief Chemical, Corrosion, & Steam Generator Branch Division of Materials and License Renewal Eric Oesterle, Chief License Renewal Projects Branch Division of Materials and License Renewal Steve Ruffin, Chief Piping & Head Penetration Branch Division of Materials and License Renewal Tania Martinez-Navedo, Chief Electrical Engineering, New Reactors, & License Renewal Branch Division of Engineering Brian Wittick, Chief Structural Engineering Branch Division of Engineering Report for the Operating Experience Review Audit Peach Bottom Atomic Power Station, Units 2 and 3 Subsequent License Renewal Application
- 1. Introduction The U.S. Nuclear Regulatory Commission (NRC or the staff) conducted an audit of Exelon Generation Company, LLC (Exelon) Peach Bottom Atomic Power Station (PBAPS) Units 2 and 3 (PB or the applicants) plant-specific operating experience (OpE), as part of the staffs review of the Peach Bottom subsequent license renewal application (SLRA) at the EXCEL Services Corporation located in Rockville, Maryland, from September 17 through 27, 2018. The purpose of the audit was for the NRC staff to perform an independent review of plant specificplant-specific OpE to identify examples of age-related degradation, as documented in the applicants corrective action program database. The regulatory bases for the audit was Title 10 of the Code of Federal Regulations, Part 54, Requirements for Renewal of Operating Licenses for Nuclear Power Plants, (10 CFR Part 54). The staff also considered the guidance contained in NUREG-2192, Rev. 0, Standard Review Plan for Review of Subsequent License Renewal Applications for Nuclear Power Plants (SRP-SLR), dated July 2017, and NUREG-2191, Rev. 0, Generic Aging Lessons Learned for Subsequent License Renewal (GALL-SLR) Report, dated July 2017.
The identified OpE examples will be further evaluated during the staffs subsequent technical review and auditing of aging management programs (AMPs), time-limited aging analyses (TLAAs) and aging management review (AMR) line items. The staffs identification and evaluation of pertinent OpE and additional related documentation, provides a basis for the staffs conclusions on the ability of the applicants proposed AMPs and TLAAs to manage the effects of aging in the period of extended operation.
- 2. Audit Activities The following sections discuss the areas reviewed by the staff and identified examples of pertinent OpE.
SLRA AMP B.2.1.1, ASME Section XI Inservice Inspection, Subsections IWB, IWC, and IWD Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: flaw, age, crack, brittle, weld, bolt, buried, corrosion, damage, fracture, leak, scc, piping, rupture, nickel-alloy, min wall, rust, pwscc, mechanical wear, indication, qualification, thread, through wall, transgra, vessel, vessel internals, wall loss, wall thin, wastage, wear, and pit.
The table below lists the documents that were reviewed by the staff and were found relevant to the ASME Section XI Inservice Inspection, Subsections IWB, IWC, and IWD Program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the (Safety Evaluation Report (SER).
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-02546998 ASME percentage limitations not met 08/27/2015 AR-04003429 ISI database descrepancies (reactor head stud bolting) 04/27/2017 AR-02564068 P3R20 ISI expanded scope requirements 10/01/2015 AR-01554519 PBAPS UNIT 3 RPV head weld flaw documentation 09/05/2013 AR-02704854 HPSW leak from pipe 08/16/2016 AR-00823513 P2R17 ISI indications in weld 9/28/2008 AR-01118530 P2R18 flaw indication on RPV head to flange weld 09/27/2010 AR-00919813 EOC piping examination for ESW root cause 05/14/2009 AR-01587735 U3 LR CIA need tracking for committment 11/20/2013 AR-01568638 Rejectable weld flaw FW-DD-25 10/07/2013 AR-00811174 P2R17 3 ISI weld examinations not scheduled 08/26/2008 SLRA AMP B.2.1.2, Water Chemistry Audit Activities. The staff conducted an independent search of applicants operating experience database using keywords: chloride, conductivity, crack, dissolved oxygen, fluoride, HWC
[hydrogen water chemistry], hydrogen water, iron, noble, organic, oxygen, PWSCC
[pressurized-water stress corrosion cracking], SCC [stress corrosion cracking], stress, sulfate, and zinc.
The table below lists the documents that were reviewed by the staff and were found relevant to the Water Chemistry program. These documents were identified in the staffs search of applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01410743 Electrochemical corrosion potential exceeded 230 millivolts for Unit 2 due to the Unit 2 refueling outage 19 shutdown 09/10/2012 AR-01468207 Relation between Unit 3 reactor water clean-up system and iron injection on chloride concentration 01/29/2013 Document Title Revision / Date AR-01136659 Chemistry deep dive results and recommended actions 11/06/2010 AR-01697416 Chemistry department rated chronic yellow by nuclear oversight 08/28/2014 AR-01691387 Unit 3 total organic carbon (TOC) above limit 08/11/2014 AR-01601996 Adverse trend - torus TOC 12/30/2013 AR-01601661 Unit 2 TOC above limit 12/29/2013 SLRA AMP B.2.1.3, Reactor Head Closure Stud Bolting Audit Activities. During its audit, the staff had discussions with the applicants staff and reviewed onsite documentation provided by the applicant. The table below lists Exelon documents that were reviewed by the staff and were found relevant to the audit.
The table below lists the documents that were reviewed by the staff and were found relevant to the Reactor Head Closure Stud Bolting program. These documents were identified in the staffs search of applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date PI-AA-115-1003 Processing OE evaluations REV. 4 M-004-400 Reactor pressure vessel reassembly REV. 43 M-004-400 Reactor pressure vessel disassembly REV. 38 P2R18-168976-HE2-ISI In-service inspection report for Peach Bottom Power Station 10/2010 P3R18-3Q11-NDE-2LO14H-ISI In-Service inspection report for Peach Bottom Power Station 09/2011 H5814 Reactor head spare stud CMTR REV. 0 11/08/1971 AR-003N9506 Peach Bottom Units 2 And 3, materials properties and test results for closure studs, nuts, washers and bushing REV. 0 12/2016 AR-00834915 Stuck stud #80, lessons learned for refuel floor 09/15/2008 SLRA AMP B.2.1.4, BWR Vessel Id Welds Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Crack, SCC, Vessels, and Weld.
No significant plant specificplant-specific operating experience associated with AMP B.2.1.4, BWR Vessel ID Welds was noted by the staff during its review.
SLRA AMP B.2.1.5, BWR Stress Corrosion Cracking Audit Activities. The staff conducted an independent search of Exelons operating experience database.
The table below lists the documents that were reviewed by the staff and were found relevant to BWR Stress Corrosion Cracking. These documents were provided by Exelon or were identified in the staffs search of Exelons operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED DURING THE AUDIT Document Title Revision / Date AR-04014529 P3R20 ISI: RWCU Weld 12-I-1C Limited Coverage the licensee identified that an inspection coverage of 84.2% of the area was obtained in lieu of the required amount of 90%
06/13/2017 AR-02582071 ISI scope IGSCC weld RWCU in PBAPS,Unit 2. During a focused area self assessment (fasa) of ISI program it was identified as a total of 5 IGSCC Category D welds in the RWCU systems were erronesly not scheduled for re-examinations set at every 6 year interval 11/9/2015 AR-01479610 PBAPS Unit 2, had determined not to mitigate previously selected 15 IGSCC category D welds for MSIP treatment 06/14/2013 AR-04047787 3R21 RPV instrumentation nozzle examinations; a leakage was discovered during a leakage test in one of the water level instrumentation nozzles located on the top-of-active fuel at one of the BWR Units in the fleet 09/30/2017 AR-04068795 During the ISI inspections (P3R21) at PBAPS, Unit 3, two indications were identified in RWCU Weld 12-13-12 09/25/2018 SLRA AMP B.2.1.6, BWR Penetrations Audit Activities. The staff conducted an independent search of Exelons operating experience database.
No significant plant-specific operating experience associated with the BWR Penetrations was noted by the staff during its review.
SLRA AMP B.2.1.7, BWR Vessel Internals Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: crack, SCC, vessels, and weld.
The table below lists the documents that were reviewed by the staff and were found relevant to the BWR Reactor Water Vessel Internals. These documents were identified in the staffs search of the applicants operating experience database. The results of the review of relevant operating experience is documented in the In Office Audit Report.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-2738604 P2R16 jet pump 17 in outage P2R21, the licensee reevaluated indications in weld DF-2 that were first identified in P2R16.
There was a reduction in limiting flaw length acceptance criterion 11/08/2016 AR-2734507 2R21 IVVI replacement steam dryer the licensee identified cracked welds in the replacement steam dryer hold down rods.
This condition report is referenced in the report titled results of visual inspection of Unit 2 replacement steam dryer dated December 7, 2016 (ADAMS No. ML16342b621) which was required by Operating License Condition 2.c(15)(g) 10/30/2016 AR-2570717 3R20 Core Shroud UT Exam the licensee found atypical indications identified as possible IGSCC during the UT exam of Weld H4; further evaluation proposed by licensee 10/14/2015 AR-1265631 P3R18 core spray sparger bracket the licensee identified unreportable indications of length about 1 inch during IVVI examinations 09/20/2011 AR-1117134 P2R18 Reexam UT Indication, the licensee identified 2 possible IGSCC indications during the reexam of the tee box weld; total indication length was about 7.5 inches but there had been no growth since initial discovery 09/23/2010 AR-1114823 P2R18 IVVI Core Spray Piping the licensee identified two possible IGSCC indications in the reexam of weld P3B1; total indication length was about 3.4 inches; one indication appeared slightly longer than when previously evaluated 09/18/2010 AR-970611970611Jet Pump 9_10 Weld the licensee identified a crack of unknown cause during the reexam of weld RS-1; total indication length was about 2.4 inches but there had been no growth since the previous exam 09/25/2009 AR-968920968920Jet Pump Main Wedge Wear the licensee identified new wear during the exam of main wedges on jet pumps 3 and 9; BWRVIP-41 R1 requires scope expansion 09/23/2009 Document Title Revision / Date AR-821459821459P2R17 Core Spray Piping the licensee identified possible IGSCC indications in the exam of weld P3B1 09/23/2008 AR-820446820446P2R17 Steam Seperator Gusset the licensee identified possible IGSCC indications during the IVVI exam of several gussets; new indications were found on 4 gussets and change or growth of indications were found on 5 gussets; the licensee identified that this is a non-safety related component not required to be inspected by BWRVIP or ASME; examinations were performed to provide industry OpE 09/21/2008 AR-798768798768Deviation From BWRVIP the licensee identified a deviation from BWRVIP-76 when the examination frequency for Weld H1 was extended from 6 to 10 years; the licensee resolved the deviation by performing a plant specific evaluation 07/21/2008 AR-2735052 2R21 Exam Of Steam Dryer Support the licensee identified new wear during the reexam of steam dryer support brackets 10/31/2016 AR-1392477 2012 INPO BWRVIP Review the licensee identified that HWC (hydrogen water chemistry) availability was good, but recommended modifications to improve availability 07/24/2012 AR-4067342 Jet Pump 9 Aux Wedge Overtravel the licensee identified significant wear in the vessel side auxiliary wedge. the licensee recommended removal to prevent further damage to the jet pump 10/26/2017 AR-2737278 2R21 Exam Of Jet Pumps 13 and 18 the licensee identified minor wear during the exam of aux wedges JP13VS and JP18SS; the licensee determined the condition to be acceptable 11/04/2016 AR-2736160 2R21 Indications Of Shroud the licensee identified fillet weld breaks and potential for loose parts during IVVI of the jet pumps.
the licensee stated this damage was most likely caused during inspection and recommended removal of broken brackets 11/02/2016 AR-2735819 2R21 Scope Adds And Descopes the licensee identified several jet pump welds to be added or removed from inspection scope based on updated guidance from BWRVIP-41 R3 11/02/2016 AR-2667801 2016 BWRVIP FASA Deficiency 1 the licensee identified that several hidden welds were not in accordance with BWRVIP-41 for leakage evaluation; the licensee recommended that core spray and jet pump flaw evaluations be revised to assume leakage from inaccessible welds 05/10/2016 AR-2565404 3R20 Jet Pump 09 Auxilliary Wedge the licensee identified new wear on the vessel side aux wedge that would require a scope expansion to the main wedge 10/04/2015 AR-2737370 2R21 Jet Pump A Loop Adapt the licensee identified several indications in backing rings during the IVVI of the AD-1 welds.
The licensee stated that there was no evidence that the structural weld was degraded 11/04/2016 Document Title Revision / Date AR-2736876 2R21 Expanded Scope On RS-1 this condition report was written in conjunction with Condition Report 02736616 (see below) and clarifies the expanded scope to meet BWRVIP-41.
11/03/2016 AR-2736616 2R21 Jet Pump 11-12 RS-1 the licensee identified an indication during IVVI of weld RS-1; the licensee recommended that a determination be made if scope expansion was warranted.
Another Condition Report (AT-2736876) discussed scope expansion 11/03/2016 AR-2734940 2R21 Re-exam Of Core Spray Piping P3B1 the licensee identified no apparent changes in the indications that were identified in previous outages; (Condition Report AR-1265631 documents these indications during previous outage P3R18) 10/31/2016 AR-2734935 2R21 Jet Pump Adapter Backing Ring the licensee identified several indications in backing rings during the IVVI of the AD-1 welds; the licensee stated that there was no evidence that the structural weld was degraded 10/31/2016 SLRA AMP Section B.2.1.8, Thermal Aging Embrittlement of Cast Austenitic Stainless Steel (CASS)
Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: cast, thermal aging, CF8, pump casing, N-481, flaw, and flaw tolerance.
The table below lists the document that was reviewed by the staff and was found relevant to the Thermal Aging Embrittlement of Cast Austenitic Stainless Steel (CASS) Program. This document was provided by Exelon. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-2455499 P2R21 ISI Scope - PIMS AR for ISI inspection of Pump B 02/18/2015 SLRA AMP B.2.1.9, Flow-Accelerated Corrosion Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: cavitat, CHECWORK, erosi, FAC, flow-accelerated, and min wall.
The table below lists the documents that were reviewed by the staff and were found relevant to the Flow-Accelerated Corrosion program. These documents were provided by Exelon or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-04079500 Historical maintenance rule failure 11/30/2017 AR-02656237 FAC [flow-accelerated corrosion] scope selection of P3R21 UT piping inspections 04/15/2016 AR-02615405 HPCI turbine inlet drain HI level alarm received 01/21/2016 AR-02568865 Steady stream leak from 3C RHR heat exchanger 10/10/2015 AR-02561767 Erosion in piping and components inspection below t minimum 09/28/2015 AR-02573389 OE review of IER L3-15-31, Unexpected Flow-Accelerated Corrosion 10/19/2015 AR-02392700 FAC FASA DEF No. 2 checworks unexpected output pH value 10/08/2014 AR-01646140 Erosion in piping and component program change management 04/11/2014 AR-01621291 Flow element/flow orifice FAC inspections 02/14/2014 AR-01386703 Benchmarking of FAC Chug meeting June 07/09/2012 AR-00984517 Piping material differs from expected 10/26/2009 SLRA AMP B.2.1.10, Bolting Integrity Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: leak, cap screw, SCC, stress corrosion cracking, crack, torque, preload, bolt, moly, and corro.
The table below lists the documents that were reviewed by the staff and were found relevant to the Bolting Integrity Program. These documents were provided by Exelon or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00877922 Large packing leak on ECW pump discharge valve 02/08/2009 AR-03972629 Small packing leak from HV-3-19-ISC 02/10/2017 Document Title Revision / Date AR-02418492 Packing leak HPSW in the 2D RHR room 11/29/2014 AR-01510178 Verify torque on PSD-3-23-007 flanges 05/03/2013 AR-04033375 Flange leak on MO-3-48-3804B 07/19/2017 AR-00915882 MO-502A Bonnet Bolts Potentially under-torqued 05/05/2009 AR-00820405 P2R17 ISI loose bolts on Unit 2 HPCI suction strainer 09/21/2018 AR-01086963 Torus Dewatering Tank (TDT) drain valve found degraded 07/01/2010 WO C023395 Replace existing valve with new 08/05/2010 SLRA AMP B.2.1.11, Open-Cycle Cooling Water System Audit Activities. The staff conducted an independent search of Exelons operating experience database using keywords: emergency service water (ESW), high pressure service water (HPSW), emergency cooling water (ECW), GL 89-13, crack, biofoul, heat transfer, and corrosion.
The table below lists the documents that were reviewed by the staff and were found relevant to the Open-Cycle Cooling Water System Aging Management Program. These documents were identified in the staffs search of Exelons operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-04097435 As part of initiative to centralize engineering programs, Generic Letter (GL) 89-13 implementation moved from site engineering programs role to fleet engineering, systems engineering 01/26/2018 AR-04056936 Peach Bottom raw water/GL 89-13 programs credit raw water program NDE work requests towards meeting annual GL 89-13 piping integrity monitoring expectations per ER-AA-340. Raw water program engineer identified inspections previously planned for completion have not been executed during year(s) credited by GL 89-13 09/28/2017 AR-01534045 Stem/disc connection failure on valve HV-V-3-33-503 in April 2013 has prevented flow of service water into ESW. Biocide added to service water is cited in GL 89-13 response as method for complying with Action 1 of GL 89-13. Unit 3 ESW has gone without biocide since early April.
07/10/2013 Document Title Revision / Date AR-01444838 Leak was identified in A ESW supply piping during engineering walkdown. Engineering selected locations to evaluate areas of similar risk in ESW piping 11/27/2012 AR-00721798 Gl 89-13 had two consecutive yellow quarters (3rd/4th 2007).
Completing check-in assessment by 11/14/2008 will meet ER-AA-1100 requirement to check-in by one year after first yellow quarter 03/14/2008 AR-00871970 2C core spray room cooler heat transfer test performed was evaluated to be unsatisfactory. Recommended action to clean and perform retest 01/26/2009 AR-01039055 Chemistry has not optimized raw water strategy to efficiently monitor and control corrosion in service water systems (e.g.,
since April 2009, an increase in chlorination with intent to control microbiological growth led to increased corrosion on brass components due to overchlorination) 03/05/2010 AR-1039055-35 Copper corrosion rate in goal since April 2010 for Unit 3 and since May 2010 for Unit 2. Chlorine concentration typically within goal, but sometimes exceeds upper limit and will likely continue until online chlorine monitoring system is installed 12/30/2010 AR-1039055-39 2016 WANO Raw Water AFI cites ineffective chlorination in raw water. some of the raw water piping is not provided chemical treatment 09/01/2016 AR-00759277 Circulating water chemistry data indicates that target free residual chlorine concentration was achieved 36% of the time in March 2008 04/04/2008 AR-01020991 2B RHR room cooler evaluated to be unsatisfactory 01/25/2010 AR-03987883 ESW mild steel corrosion inhibitor NALCO 3DT124 becoming obsolete. Vendor offered similar alternative NALCO 3DT424.
Chemistry reviewed technical literature and active ingredients are the same, but the polymer is changing.
03/21/2017 AR-01232297 Peach Bottom raw water chemical treatment does not sufficiently protect against corrosion in HPSW system. Implementing biocide/corrosion inhibitor will increase asset protection 06/23/2011 LRA AMP B.2.1.12, Closed Treated Water Systems Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: bacteria, clog, cooler, corros, foul, heat exch, leak, MIC, and 89-13.
The table below lists the documents that were reviewed by the staff and were found relevant to the Closed Treated Water Systems program. These documents were provided by Exelon or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
SLRA AMP B.2.1.13, Inspection of Overhead Heavy Load and Light Load (Related to Refueling) Handling Systems Audit Activities. The staff conducted an independent search of Exelons operating experience database using keywords: crane, corro, defor, deflect, bolt, crack, fatigue, and cycle.
The table below lists the documents that were reviewed by the staff and were found relevant to the Inspection of Overhead Heavy Load and Light Load (Related to Refueling) Handling Systems. These documents were provided by Exelon or were identified in the staffs search of Exelons operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-02527289 00H016 Gantry Crane Deficiencies 07/13/2015 AR-01361743 License renewal inspections for reactor building cranes 05/02/2012 PROCEDURE M-017-001 Periodic inspection of reactor building cranes 01/11/2013 AR-00901692 Perform inspections per NER-09-11-R 04/01/2009 AR-01653234 Defect identified on E4 EDG overhead crane 04/29/2014 AR-01253042 Deficiencies noted on turbine crane 0BH009 08/18/2011 SLRA AMP B.2.1.14, Compressed Air Monitoring Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: air, aging, moist, chlorine, and instrument.
No significant plant-specific operating experience associated with the Compressed Air Monitoring program was noted by the staff during its review.
SLRA AMP B.2.1.15, BWR Reactor Water Cleanup System Audit Activities. The staff conducted an independent search of Exelons operating experience database.
The table below lists the documents that were reviewed by the staff and were found relevant to BWR Reactor Water Cleanup System. These documents were provided by Exelon or were identified in the staffs search of Exelons operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date PB-PBD-AMP-XI.M25 Program Basis Document - BWR Reactor Water Cleanup System Revision 2 ML090930466 NRC letter dated September 15, 1995, Reactor Water Cleanup (RWCU) System Weld Inspections at Peach Bottom Atomic Power Station, Units 2 and 3 (TAC Nos. M92442 and M92443) 09/15/1995 Plant OE - XI.M25 Plant OE - XI.M25 BWR reactor water cleanup system aging management program Implementing Documents
- XI.M25 Implementing Documents - XI.M25 BWR reactor water cleanup system aging management program Plant Operating Experience - X1.M2 Water chemistry - plant operating experience - XI.M2 Water Chemistry Program SLRA AMP B.2.1.16, Fire Protection Audit Activities. The staff conducted an independent search of Exelons operating experience database using keywords: penetration seal, fire door, fire damper, insulation, combustible, carbon dioxide, CO2, wall, ceiling, and floor.
The table below lists the documents that were reviewed by the staff and were found relevant to the Fire Protection Aging Management Program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00848237 Random walkdown of seismic gap penetration seals was performed; the seals did not meet acceptance criteria in DWG-3010, Revision 1 (no voids greater than a depth of 1 inch in surface of seal, shrinkage of foam away from pipes, tray, or barrier less than 1/8 inches); the seals were evaluated for repair, compensatory actions, and extent of condition 11/21/2008 AR-04056797 NRC resident identified a link seal in penetration protruding from the wall about 1-2 inches, along with one bolt that was missing; the foam seal on other side is sufficient for fire containment; the link seal was recommended to be repaired or replaced 09/28/2017 Document Title Revision / Date AR-04072454 Door #R31 was found to be leaking and letting excessive air flow through; immediately notified supervision and recommended repair or replacement of door seals 11/08/2017 AR-04059540 AR-03949290 AR-01643697 AR-01625690 AR-01381458 AR-01162732 AR-00998614 AR-00996858996858AR-00965783 AR-00945934945934AR-00848118 Latch on door #388 sticking and intermittently preventing door from latching; immediately notified supervision and recommended investigation and repair 10/05/2017 12/05/2016 04/06/2014 02/25/2014 06/25/2012 01/14/2011 11/26/2009 11/22/2009 09/16/2009 07/26/2009 11/21/2008 AR-03994441 Door #307 in fan room 165 foot elevation sticks when attempting to close due to malfunctioning door handle.
Recommend fixing door; immediately posted sign and generated IR 04/05/2017 AR-03801968 Door so rusted that door started to cave in; door will have to be replaced (01/28/2007).
Door replacement scheduled for 2012; work was not performed (09/28/2012)
Door replacement was not completed in 2012 due to lack of engineering support (10/26/2012).
01/28/2007 AR-02734298 Door would not unlatch when carding out.
10/29/2016 AR-02565724 Door #149 will not latch; took immediate compensatory measures in accordance with SY-PB-101-102; recommended investigation and repair.
10/05/2015 AR-02696748 One cinder block detached from mortar, creating a void around the block. The wall is not an Appendix R fire barrier required for safe shutdown, but it does separate plant computer rooms; evaluated condition such that there is reasonable assurance that the wall will perform intended function.
07/26/2016 AR-01422732 Two deficiencies in fire barrier wall TB2-150-302-S; (1) upper west end corner has 30-40 pound chunk of concrete hanging in place; additional concrete lying below (2) penetration seal 3015 and 3015A-N exhibiting mild inward deterioration; recommend evaluation/inspection of loose concrete and deteriorating penetration material to determine appropriate action 10/05/2012 AR-01342499 Five of seven fire extinguishers available for operations to use as replacements were identified as no good 03/19/2012 Document Title Revision / Date AR-02619638 Appearance of leakage near roof along DDFP exhaust header back down in to DDFP room. Recommend scheduling roof inspection to verify insulation and flashing intact in order to avoid risk of roof fire as previously experienced on one of EDGS 01/31/2016 AR-01259015 Fire insulation material was knocked off a steel column.
Recommendations made to reapply the fire insulation material to the steel column and inspect the area to identify/fix any other steel that may be missing insulation 09/02/2011 AR-00888533 RB3-091-040-2510 fire barrier penetration failed inspection per its installation detail 03/04/2009 AR-00842348 E-2 EDG room ceiling louver failed and fell out of the ceiling.
The resulting opening is a 36 x 4 hole in ceiling. In addition to repair, recommendations made to check all louvers for extent of condition.
11/08/2008 AR-01188313 NRC resident identified caulk was missing or partially missing from the gap around the concrete covers above manholes 16, 17, 18, 40. Caulk is a required part of fire barrier seal 03/16/2011 AR-03947643 Enhancement to E-1400, Sh. 9. E-1400 Sh. 9 describes requirements for cable fire proofing, but does not specify whether cables are to be wrapped as a bundle or as a single cable. Recommend revision to include invididual wrapping requirements up to penetration seal.
11/30/2016 AR-01020308 Several cable trays in overhead have black tape/wrapping with fire proofing material that is peeling and coming off.
01/23/2010 AR-00878889 Approximately 24 feet of fire system piping in each unit circulation pump bay requires insulation to prevent freezing.
02/10/2009 AR-01194716 Maintenance instructions in the field need to include guidance to assess and replace oil contaminated insulation. Enhance procedures and training on risk associated with insulation contaminated with oil.
03/30/2011 SLRA AMP B.2.1.17, Fire Water System Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: biofoul, biological, block, break, clog, damage, deposits, drainage, fail, flow restrict, foul, hole, indication, lined, lining, masonry, mortar, recur, rupture, sediment, silt, and sprinkler.
The table below lists the documents that were reviewed by the staff and were found relevant to the Fire Water System program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-791182791182A sprinkler head is leaking in the operations managers office at a rate of one drop every 2 - 3 minutes.
06/7/2008 AR-812251812251A sprinkler head is leaking in the third floor northeast corner of the site management building.
08/29/2008 AR-815694815694The diesel-driven fire pump (DDFP) y-strainer cooling water inlet is clogged with dirt and debris.
09/9/2008 AR-850043850043A one gallon per minute leak was detected in the fire water piping near the Unit 2 condensate pump pit.
11/26/2008 AR-868307868307A break in the fire water system sprayed water on the 2C circulating water pump motor exciter cabinet; causing a Unit 2 transient.
01/18/2009 AR-915059915059A sprinkler is leaking in the administrative building at a rate of one drop per second.
05/2/2009 AR-935435935435A through-wall leak was detected on the DDFP cooling piping.
06/25/2009 AR-936777936777A small leak was detected in an elbow for the sprinkler piping near turbine bearing number 5.
06/29/2009 AR-937457937457Two piping leaks were detected in the 1-1/2-inch piping associated with the DDFP.
06/30/2009 AR-946274946274There is a one drop per minute pinhole leak on the flange weld associated with hand valve, HV-0-57C-12444.
07/27/2009 AR-1031495 A partially blocked main drain was detected during main drain testing.
02/17/2010 AR-1074273 A sprinkler head is leaking in the high bay warehouse at a rate of 15 - 20 drops per minute.
05/27/2010 AR-1087814 A pinhole leak was detected at hand valve, HV-037D-12300.
07/5/2010 AR-01094142 A leak in the fire water header was detected as evidenced by water spraying in the vicinity of 3A moisture separator area.
07/25/2010 AR-1114191 Corrosion was noted on a sprinkler in the moisture separator area.
09/17/2010 AR-1135415 A leak in the discharge piping of the motor-driven fire pump (MDFP) resulted in piping replacement.
11/3/2010 AR-1140078 A pinhole leak was detected downstream of BS-0421 [basket strainer]; spraying 16 milliliters/minute.
11/14/2010 AR-1175779 Four pinhole leaks were detected downstream of HV-037D-12300.
02/15/2011 Document Title Revision / Date AR-1201388 The DDFP has nine small leaks from a downstream elbow.
04/12/2011 AR-1277329 A fire water system leak was detected in the Unit 3 Turbine Building-135, north end.
10/17/2011 AR-1343009 One sprinkler head is leaking in a rebuild area at a rate of 32 drops per minute.
03/20/2012 AR-1349054 One nozzle had very low flow during a deluge system test, RT-O-37B-356-2.
04/2/2012 AR-1357329 One sprinkler head is leaking on the third floor of the administration building at a rate of less than one drop per minute 04/23/2012 AR-1387581 DDFP cooling line y-strainer clogging 07/11/2012 AR-1397594 DDFP cooling line y-strainer clogging 08/5/2012 AR-1446739 A pinhole leak associated with the relief valve for the MDFP was detected, which is leaking at a rate of 30 drops per minute 11/30/2012 AR-1489948 Two sprinkler heads are leaking in the vice presidents office, which are leaking at a rate of 1 drop per minute 03/19/2013 AR-1663767 A sprinkle head is leaking in the Unit 2 main turbine lube oil room at a rate of 3 drops per minute 05/23/2014 AR-2382429 Point defects were detected in the internal mortar lining of the fire water system main; there was no evidence of piping damage or corrosion 09/17/2014 AR-2412210 The main drain test procedure, RT-O-37B-2, does not record static and dynamic pressure 11/13/2014 AR-2458840 A sprinkler head is leaking in the administrative building.
02/25/2015 AR-2488219 The DDFP cooling water inlet pressure indicator, PI-0281, is trending downwards 04/19/2015 AR-2500757 A sprinkler head in the instrument and controls managers office is dripping at a rate of one drop per minute 05/14/2015 AR-2612224 A pinhole leak was detected downstream of hand valve, HV-037D-12300 associated with the DDFP 01/14/2016 AR-2669950 Two sprinkler heads in a managers office were leaking at a rate of 10 to 15 drops per minute 05/16/2016 AR-2692153 The DDFP sensing line continues to clog 07/13/2016 AR-2724449 PI-0281, associated with the DDFP cooling water supply, continues to trend downward.
10/5/2016 Document Title Revision / Date AR-4005626 A small pinhole leak was detected downstream of HV-037D-12300; associated with the DDFP.
05/2/2017 AR-4010971 One deluge nozzle was clogged for the Unit 2 startup and emergency auxiliary transformer; there was no impact on the fire water protection function for the transformer.
05/15/2017 AR-4026398 There have been frequent instances of pinhole leaks occurring in the relief valve piping for the MDFP.
06/27/2017 AR-4044061 Several fire hydrants failed the flush test criteria due to failure to drain.
08/21/2017 AR-4055356 Two sprinkler heads are dripping water 09/24/2017 AR-4071934 Fire system piping was leaking in the location of the turbine T9 bearing. Five feet of pipe was replaced.
11/2/2017 AR-4071773 A deluge nozzle failed testing because water was trickling from the head instead of spraying for the C main turbine deluge system.
11/7/2017 AR-4077706 One sprinkler head failed on the Unit 3 main turbine operating floor 11/24/2017 SLRA AMP B.2.1.18, Outdoor and Large Atmospheric Metallic Storage Tanks Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: crack, through-wall, pinhole, leak, tank, blister, delamination, coatings, rust, holiday, corrosion, insulation, refueling water storage tank (RWST/RST), and condensate storage tank (CST).
The table below lists the documents that were reviewed by the staff and were found relevant to the Outdoor and Large Atmospheric Metallic Storage Tanks Aging Management Program.
These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01523775 Lessons learned from tank inspection include using more appropriate lighting, qualifying other coatings at the site, qualifying other contractrs to perform inspections and repairs, qualifying tank cleaning service, and identifying responsible parties for tank inspections in a more timely manner 06/11/2013 AR-02561237 Weeds were found growing in the joints of Unit 3 CST moat. Indication of lack of complete integrity of secondary containment.
09/27/2015 Document Title Revision / Date AR-02524605 Please generate Pims AR for Unit 2 CST internal recoating.
07/07/2015 AR-02416582 During RFO 20, volumetric floor inspection of U2 CST (20T010) was attempted using Magnetic Flux Leakage (MFL). MFL tooling popped blisters as rolled across the floor; popping blisters expected, water behind blisters was not.
11/24/2014 AR-04022739 Unit 2 CST floor should be scheduled for proactive repair due to indications found during RFO 21. Repair Iaw Tank Code API653 06/16/2017 AR-03965638 During RFO 21, 12 indications identified as below screening wall thickness and would need to be evaluated 01/23/2017 AR-00792787 Water absorbed into Unit 2 moat floor; moat floor is sealed and should not absorb water 07/02/2008 AR-01003942 Water leak at heating steam pipe connection to Unit 2 CST. Water is leaking from insulation where heating steam condensate return line exits the tank.
12/10/2009 AR-01282227 An inspection of moat integrity was performed as an EOC review.
Inspection of CST/RST moat identified that the sealant in a vertical seam where the moat wall meets the Unit 2 reactor building railroad airlock shows minor degradation.
10/27/2011 AR-00761933 20T010 CST tank very rusty at bottom of tank; it appears water accumulates in moat in this area.
04/11/2008 AR-02586319 Identified coating either peeling or rusting away in small areas around the tank (RST) heating steam and condensate return connections at horizontal welds 11/12/2015 AR-01455775 Actions recommended to proactively verify RST tank bottom integrity during next RST PM 12/26/2012 AR-00844188 Sealing activities for Unit 3 CST and TDT moat will not take place in 2008. 20T010 Unit 2 CST/RST moat was completed, but all remaining moats will be re-sealed in 2009 11/12/2008 AR-01455775 Tritium found in hatch groundwater; actions recommended to verify Peach Bottom RST tank bottom integrity during next RST; RST is coated carbon steel on mildly corrosive ground; cathodic protection in proximity insufficient 12/26/2012 SLRA AMP B.2.1.19, Fuel Oil Chemistry Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: biofuel, biological, MIC, bacteria, sample, fuel oil, and diesel.
The table below lists the documents that were reviewed by the staff and were found relevant to the Fuel Oil Chemistry program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00842578 E-1 main fuel contains small amount of water 11/09/2008 AR-00856075 E1 FO tank water/ sediment found in tank 12/14/2008 AR-00856080 E4 FO tank water/sediment found in tank 12/14/2008 AR-00926496 E4 EDG main fuel oil STOR TK has high bacteria 06/01/2009 AR-01206734 Water found in E3 fuel oil sample 04/23/2011 AR-01306107 ODT038 E4 EDG fuel oil tank sediments 12/22/2011 AR-01418484 E2 DG main FO storage tank upward trend in particulate 09/26/2012 AR-01479030 E3 EDG fuel oil storage tank bacteria 02/22/2013 AR-01510201 EDG fuel oil tank long term health plan 05/03/2013 AR-01681817 Buried E1 diesel piping guide wave 2014 07/14/2014 AR-02691462 Sludge and biological growth found in DDFP day tank 07/11/2016 SLRA AMP B.2.1.21 One-Time Inspection Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: blister, break, clam, coat, corro, crack, damage, delamin, fail, flaw, hole, holiday, rust, and scal.
The table below lists the documents that were reviewed by the staff and were found relevant to the One-Time Inspection Program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00921199 Torus item 05/18/2009 AR-04024041 Torus coating inspection frequency 06/21/2017 Document Title Revision / Date AR-2571658 3R20 containment coating inspection results 10/16/2015 AR-02413128 Coating defects and pinpoint rust in torus belly band area 11/17/2014 AR-01603399 P2R20 - torus coating inspection 01/03/2014 AR-02407173 Pit with depth of 126 mils 11/05/2014 AR-01206713 A boiler tube leak creating waste water disposal expense 04/23/20111 AR-01542130 Raw water inspection program process improvements 08/01/2013 SLRA AMP B.2.1.22, Selective Leaching Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: bronze, graphiti, dealloy, degraph, zinc, leach, dealum, and cast.
The table below lists the documents that were reviewed by the staff and were found relevant to the Selective Leaching program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01257959 License renewal fire system testing for selective leaching 08/30/2011 SLRA AMP B.2.1.23, ASME Code Class 1 Small-Bore Piping Audit Activities. The staff conducted an independent search of Exelons operating experience database.
The table below lists documents that were reviewed by the staff and were found relevant to the audit. These documents were provided by Exelon or were identified in the staffs search of Exelons operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date XI.M35 References Part 1 Basis for weld counts, second license renewal project REV. 0 AR-04065691 Steam leak at weld 10/23/2017 AR-04067473 EOC review for failed weld 10/26/2017 AR-00856352 Inspection of RI-ISI piping socket welds 12/15/2008 AR-04078978 Maintenance rule system 04 recommendation 11/29/2017 AR-00479492 Maintenance rule system 04-1-1 performance criteria exceeded 11/30/2017 AR-02732688 Main steam D flow instrument lines small-bore piping 10/25/2016 SLRA AMP B.2.1.24, External Surfaces Monitoring of Mechanical Components Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: corros, drip, drop, leak, rust, and wall thin.
The table below lists the documents that were reviewed by the staff and were found relevant to the External Surfaces Monitoring of Mechanical Components program. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-02634061 Air intake is 90 % clogged with dust and lint; review preventive maintenance work orders to determine if changes are needed to ensure screens are cleaned 03/01/2016 AR-02573369 Degraded RBCCW piping to recirc motor oil coolers 10/19/2015 AR-01635636 Walkdown of HPSW piping in Unit 3 RHR room 03/19/2014 SLRA AMP B.2.1.25, Inspection of Internal Surfaces in Miscellaneous Piping and Ducting Components Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: aging, biofoul, block, corro, piping, leak, microbiologic, and loss of.
No significant plant-specific operating experience associated with the Inspection of Internal Surfaces in Miscellaneous Piping and Ducting Components progam was noted by the staff during its review.
SLRA AMP B.2.1.26, Lubricating Oil Analysis Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: lube, oil, lubricating, wear, sample, water, and intrusion.
No significant plant-specific operating experience associated with the Lubricating Oil Analysis program was noted by the staff during its review.
SLRA AMP B.2.1.27, Monitoring of Neutron-Absorbing Materials Other than Boraflex Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: blister, Boral, NETCO, neutron absorb, and neutron.
The table below lists the documents that were reviewed by the staff and were found relevant to the Monitoring of Neutron-Absorbing Materials Other than Boraflex program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01542109 Fuel rack insert design documents not updated correctly.
08/01/2013 AR-01605678 NETCO inserts could not be installed in two Unit 2 spent fuel pool (SFP) locations.
01/08/2014 AR-02734159 SFP cell location DD-19 not useable during core shuffle 1B 10/29/2016 AR-04047328 Incorrect tolerance value in SFP criticality analyses.
08/30/2017 SLRA AMP B.2.1.28, Buried and Underground Piping and Tanks Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: aging, buried, coat, corro, wrap, vault, underground, piping, microbiologic, loss of, holiday, flaw, excavat, galvanic, chloride, and leak.
The table below lists the documents that were reviewed by the staff and were found relevant to the Buried and Underground Piping and Tanks program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-02382429 PBAPS buried fire protection pipe internal conditions 09/17/2014 AR-01279994 External coating damage on buried emergency service water (ESW) piping 10/22/2011 AR-04056450 PBAPS buried piping corrosion results 09/27/2017 AR-04055916 Subsequent License Renewal (SLR) buried condensate storage pipe requires coating for slr 09/26/2017 AR-01137854 Pin hole leak identified on a ESW supply in excavation #2 11/09/2010 AR-01561817 Operating Experience (OPEX) program action for buried fire protection corrosion 09/20/2013 AR-01255154 Coating degradation/external corrosion on buried pipe site #7 08/24/2011 AR-02513031 PBAPS buried pipe coating conditions near FLEX building 06/10/2015 SLRA AMP B.2.1.29, Internal Coatings/Linings for In-Scope Piping, Piping Components, Heat Exchangers, and Tanks Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: blister, coat, block, delamin, flak, flaw, holiday, leak, lined, lining, peel, and spall.
The table below lists the documents that were reviewed by the staff and were found relevant to the Internal Coatings/Linings for In-Scope Piping, Piping Components, Heat Exchangers, and Tanks program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-04049466 SLR Residual Heat Removal (RHR) heat exchanger water box coating not present 09/06/2017 AR-02524605 AR required to do condensate storage tank (CST) internal recoat 07/06/2015 AR-02414144 CST coating blisters popped while inspecting floor 11/16/2014 SLRA AMP B.2.1.30, ASME Section XI, Subsection IWE Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: bellows, blister, bolt, coat, containment, corro, crack, degrad, downcomer, drywell, rust, shell, torus, scal, moisture barrier, pit, and loss of material. vent, header.
The table below lists the documents that were reviewed by the staff and were found relevant to the LRA AMP B.2.1.30, ASME Section XI, Subsection IWE. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01098438 Nos ID containment inspection issues not entered into cap 08/05/2010 AR-01113597, 01113593, 01113594 Inadequate thread engagement on bolts for Unit 2 N-110E, N-110A, N110-AC, Hatch 09/15/2010 (ALL)
AR-02571658 P3R20 Containment Coating Inspection results - Unit 3 10/15/2015 AR-02417863 P2R20 Containment Coating Inspection results - Unit 2 11/25/2014 AR-02407173 Pit with depth of 126 mils metal loss, Unit 2 torus underwater IWE inspection 11/5/2014 AR-02569613 P3R21 CISI repair - repair floor coating 10/9/2015 AR-01562169 Coating damage on inside diameter of drywell head Unit 3 09/19/2013 AR-02400490 P2R20 CNF-007 - coating damage on floor and wall of drywell 10/22/2014 AR-00820200 P2R17 CISI - peeling of moisture barrier 09/20/2008 AR-01563175 FME: containment general visual results P3R19 - downcomers 09/24/2013 AR-00970529 P3R17 VT-3 inspection of downcomers submerged surfaces 09/25/2009 AR-00974909 P3R17 CISI documentation of condition of downcomers 10/5/2009 AR-01391214 P2R20 torus downcomers - perform asbestos abatement and recoat 07/20/2012 WO C0236452 P3R19 torus lining project (AR-1696762) 11/13/2013 WO C0240807 P2R19 torus lining project (AR-1753580) 12/5/2012 SLRA AMP B.2.1.31, ASME Section XI, Subsection IWF Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: bolt, degrad, crack, corro, struct, rust, SCC, hanger, support and IWF.
The table below lists the documents that were reviewed by the staff and were found relevant to the ASME Section XI, Subsection IWF program. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-4030738 Online ISI - inadequate thread engagement on 23HB-H23 07/11/2017 AR-04013046 MS clamp missing bolting 05/20/2017 AR-0257497 Broken hanger found on MSL drain line 10/23/2015 Project PEA-21158 Failure analysis of stud from a main steam line drain line 12/11/2015 AR-02737268 P2R21 ISI CNF-015 - spring can out of tolerance 11/04/2016 W/O 04768628 23-DBN-H51; P2R22 - spring cans out of tolerance 04/06/2018 W/O C0259988 23-DBN-H51 exam 11/14/2016 AR-02735294 Dual spring can, size, load scale, bolting 11/01/2016 AR-02648629 ISI inspection of 10HB-S10 (RHR support) 03/31/2016 AR-01421162 P2R19 ISI scope - PIMS AR for additional ISI inspections 10/02/2012 AR-02733492 ISI scope change - RHR hangers 10/27/2016 W/O C0263353 NDE 10HB-H25 10HB-25(IA) 11/16/2016 AR-02401934 P2R20 ISI CNF-015 - 12DCN-H150 hanger out of tolerance 10/27/2014 AR-02733492 ISI scope change - RHR hangers 10/27/2016 AR-02402207 P2R20 ISI expanded scope for 12DCN-H150 10/28/2014 AR-02402431 P2R20 ISI expanded scope correction 10/28/2014 AR-01475216 P2R20 ISI scope - PIMS AR for isi inspection of 12DCN-H150 02/14/2013 Document Title Revision / Date M-00618 Nuclear safety related specification for fabrication installation and inspection of critical pipe supports, hangers and restraints at Peach Bottom Atomic Power Station Units 2 and 3 REV 4 01/23/15 SLRA AMP B.2.1.32, 10 CFR Part 50 Appendix J Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: LLRT, ILRT, and Pressure-Boundary.
The table below lists the documents that were reviewed by the staff and were found relevant to the 10 CFR Part 50, Appendix J Program. These documents were identified in the staffs search of Applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01632412 Through wall HPSW leak identified during ST-O-032-635-3 03/12/2014 AR-01638733*
Unit 2 ILRT activities 03/26/2014 AR-01639839 Low wall reading on former Unit 3 a HPSW ILRT line 03/28/2014 AR-01646381 Unit 3 A HPSW piping, ILRT extent of condition 04/11/2014 AR-02418132 Packing leak on RTV-2-14-036D 11/27/2014 AR-02418238 RTV-2-07B-2503B packing leaks 11/28/2014 AR-02418617 As found ILRT UNSAT for ST-J-07A-600-2 11/30/2014 AR-02720162 Nos programs assessment roll up for lessons learned 09/26/2016 AR-02718721 Nos id: U2 ilrt critique comments not dispositioned 09/22/2016 AR-02463849 LLRT results exceed normal leakage values 03/05/2015 AR-02530466 SV-2-07D-2671D failed off scale during LLRT 07/20/2015 AR-02684409 SV-3-07D-3671G exceed admin limit during LLRT 06/22/2016 AR-02667246 SV-2-07D2978G exceed admin limit during LLRT 05/09/2016 AR-02667062 SV-3-07D-3978C exceed admin limit 05/09/2016 AR-02659549 Exceeded SVLC for SV-3-07D-3671E during ST/LLRT 30.07D.05 04/22/2016 AR-02649404 A low level trend in inaccurate classification of IRS by SOC 04/01/2016 Document Title Revision / Date AR-02640532 SV-3-07D-3671A thru valve leakage, failed ST/LLRT30.07.01 03/15/2016 AR-02571383 Elevated leakage on AO-3-20-0833 10/15/2015 AR-02561375 Main steam line drain LLRT results 09/28/2015 AR-02561049 A inboard MSIV did not pass LLRT 09/26/2015 AR-02558419 AO-3-20-83 LLRT failure 09/21/2015 AR-00827484 CRD hatch failed LLRT 10/07/2008 AR-00826622 Assess P2R17 LLRT results 10/04/2008 AR-00826137 AO-2-20-083 failed off-scale as-left LRRT 10/03/2008 AR-00824880 ST/LLRT 20.20B.01 revealed leakage past valves 10/01/2008 AR-00824871 ST/LLRT 20.20B.01 revealed leakage past valves 10/01/2008 AR-00823017 MO-2-10-26A failed high leakage during LLRT 09/26/2008 AR-00818517 C MSIV line high leakage during LLRT 09/16/2008 AR-01112867 AO-20-7B-2502B failed LLRT ST/LLRT 20.07b.05 off scale high 09/14/2010 AR-04070394 Nos QV ID: indication on fitting 11/03/2017 AR-00742879 DW penetration N-3 not IAW ASME XI exam, exemption requirements 02/29/2008 SLRA AMP B.2.1.33, Masonry Walls Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: block, masonry, crack, concrete, spall, mortar, wall, and steel.
The table below lists the documents that were reviewed by the staff and were found relevant to the Masonry Walls program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01645153 Hairline crack in concrete block wall Unit 2 CPS pump room 04/09/2014 AR-02390129 Void found in block wall 09/30/2014 AR-02657801 Large cracks in masonry wall TB3 135 elevation 04/18/2016 SLRA AMP B.2.1.34, Structures Monitoring Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: rebar, degrad, crack, corro, struct, manhole, concrete, rust, SCC, tank, underground, leak, efflor, leach, and excav.
The table below lists the documents that were reviewed by the staff and were found relevant to the Structures Monitoring Program. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date ROOM 1 - ROOM X26 Maintenance rule walkdowns datasheet (site structures monitoring program walkdowns database) 1997-LATEST AR-4114053 Additional scope for HPSW east exterior wall repair (circulating water pump structure parapet) 03/12/2018 AR-2561844 Moisture barrier degradation (drywell) 09/28/2015 AR-2448766 Cracked concrete at 3a RHR north wall requires repair -
evaluated per AR-243612312-03 02/16/2015 AR-4047174 Effloresce build-up on concrete wall - water intrusion 08/30/2017 AR-2482098 Reactor building concrete wall spalling 04/08/2015 AR-0745523 Multiple bolting IRS identified at Peach Bottom 03/06/2008 AR-4066929 SLR: clarify cathodic protection in UFSAR for structural piles 10/25/2017 AR-4033732 Broken grout under switch yard supports 07/20/2017 AR-2482098 Reactor building concrete wall spalling 04/08/2015 AR-0864007 Groundwater intrusion deficiency identified during walkdowns 01/08/2009 Document Title Revision / Date AR-1332710 Spalled concrete 02/27/2012 AR-17D0989 Peach Bottom water samples (second license renewal samples) for AR-3965485 05/15/2017 SLRA AMP B.2.1.35, Inspection of Water Control Structures Associated with Nuclear Power Plants Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: steel, concrete, crack, coroson, loosing bolt, and spall, The table below lists the documents that were reviewed by the staff and were found relevant to the Inspection of Water Control Structures Associated with Nuclear Power Plants. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-04032918 Excessive cracking & spalling on exterior pump structure 07/14/2014 AR-02702731 The wall/ceiling is chipping off in 2B CCW room 08/10/2016 AR-01668542 Concrete degrading at door C16 inner screen building 06/06/2014 AR-0656538 Manhole 77 has damaged concrete 05/06/2014 AR-3014280 Crack on emergency cooling tower and reservoir wall 06/03/1997 AR-3894011 Degradation from replacement of 2A circulating screen 03/10/2017 AR-3406097 HV-2-30-23427A, 2A sluice gate deficiencies 06/11/2012 AR-3406099 HV-3-30-33427B-3B sluice gate deficiencies 06/11/2012 SLRA AMP B.2.1.36, Protective Coating Monitoring and Maintenance Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: blister, coat, delamin, lined, lining, peel, and perforat.
The table below lists the documents that were reviewed by the staff and were found relevant to the Protective Coating Monitoring and Maintenance program. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-04047208 Coating Check-In and Re-Baseline.
08/30/2017 AR-04024041 Update torus inspection frequency for Subsequent License Renewal.
06/21/2017 AR-03952615 Drywell coatings not captured in unqualified coatings logs.
12/13/2016 AR-02571658 Unit 3 refueling outage 20 containment coating inspection results.
10/16/2015 AR-02417863 Unit 2 refueling outage 20 containment coating inspection results.
11/26/2014 AR-02413128 Coating defects and pinpoint rust in torus belly band area.
11/17/2014 AR-02399188 Duane Arnold torus coating delamination operating experience review.
10/22/2014 AR-02176881 Part 21 - coating failure to meet specified irradiation during test.
09/10/2014 AR-01570061 Unit 3 torus coating application non-compliance.
10/09/2013 AR-01567612 Unit 3 torus surface preparation non-compliance.
10/04/2013 AR-01691387 Unit 3 torus TOC above limit.
08/11/2014 AR-01601996 Adverse trend in torus TOCs.
12/30/2013 AR-01601661 Unit 2 torus water above limit for TOC.
12/29/2013 AR-1420875 Containment visible on blasted surface.
10/01/2012 AR-01192421 Main steam safety relief valve discharge piping temperature is greater than the torus coating qualified temperature.
03/25/2011 AR-01431174 Torus relining project increased unqualified coatings.
10/25/2012 AR-01423337 Coating application non-conformance reports.
10/06/2012 SLRA AMP B.2.1.37, Electrical Insulation for Electrical Cables and Connections Not Subject to 10 CFR 50.49 Environmental Qualification Requirements Audit Activities. The staff conducted an independent search of the applicants operating experience database using the keywords: cable, embrittlement, cracking, discoloration, melting, swelling, surface contamination, insulation, and adverse localized, and searching by system numbers.
The table below lists the documents that were reviewed by the staff and were found relevant to the Electrical Insulation for Electrical Cables and Connections Not Subject to 10 CFR Section 50.49 Environmental Qualification Requirements. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-03955141 E/S-7139-1 power cord outer jacket is bad due to dry rot.
Conductors fine. Tape applied to cable jacket. No further action noted.
12/20/2016 AR-02627247 Cable inside starter cabinet 2A for the drywell chillers showing heat degradation. Heat source: control power transformer.
Transformer relocated. Cable deemed to not need repair. [AR also references same conditions found on 3C drywell chiller and the A control room chiller.]
02/17/2016 AR-02620248 Cable inside starter cabinet 3C for the drywell chillers showing heat degradation. Heat source: control power transformer.
Suggested course of action: repair cable and move transformer.
Status: transformer not relocated and cable repair in next work window. Per the ar, cable repair on hold.
02/01/2016 AR-01502003 480V A24 bus and B24 bus ageing issues. The secondary contact connection separations in both switchgear are brittle and breaking. Suggested course of action: look at repairing or replacing if the cooling towers will be required after the study.
No further details. AR closed.
04/15/2013 AR-01570557 Potential degradation of 480V MCC 4R4-R-B feeder cable.
Discovered as part of investigation of faulted 480V MCC 3R4-R-B feeder cable due to close proximity to main steam lines in moisture separator area.
10/09/2013 AR-01516504 Documentation of 3SU cable repair/replacement plan. Subject cable is part of the aging monitoring process but the AR provides detailed insight into the actual plan followed.
05/21/2013 SLRA AMP B.2.1.38, Electrical Insulation for Electrical Cables and Connections Not Subject to 10 CFR 50.49 Environmental Qualification Requirements used in Instrumentation Circuits Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: intermediate range monitor, power range monitor, source range monitor, instrumentation circuit, neutron flux, radiation monitor, thermal transient, moisture intrusion, electrical insulation, sensitive circuit, high voltage circuit, low-level current signal, calibration, and surveillance test.
The table below lists the documents that were reviewed by the staff and were found relevant to the Electrical Insulation for Electrical Cables and Connections Not Subject to 10 CFR 50.49 Environmental Qualification Requirements used in Instrumentation Circuits. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01118854 During performance of the source calibration, the 2D main steam line radiation monitor failed downscale. Maintenance I&C found scaffolding erected for the calibration was removed and the cables running to the C & D radiation elements were not as uniform as the A & B. the cause of the failure was due to failed connectors and cable disturbance.
10/28/2010 AR-01557269 During calibration check on PS-3-02-071L there were 11 cables found to be bad. Cable and connector will need to be replaced.
PS-3-02-071L will need to be retested.
10/12/2013 AR-02410383 The 2D MSL rad monitor drifted from 11 mr/hr to downscale over an approximately 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> period. The 2 A/B/C rad monitors remained constant at 11-12 mr/hr during this time. The detector drifted downscale due to the nature and energy levels of gamma radiation.
12/11/2014 SLRA AMP B.2.1.39, Electrical Insulation for Inaccessible Medium-Voltage Power Cables Not Subject to 10 CFR 50.49 Environmental Qualification Requirements Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: cable, manhole, submerge, insulation, sump pump, tan delta, degraded cable, and vault.
The table below lists the documents that were reviewed by the staff and were found relevant to the Electrical Insulation for Inaccessible Medium-Voltage Power Cable Not Subject to 10 CFR 50.49 EQ Requirements. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-2537689 2B Condensate pump cables were tan delta tested in 2004.
Cable 2H0206A phase C tested further study required (IR 2412081). This is 2 years after the last test, which would satisfy the requirement of an increased frequency testing.
08/04/2015 AR-4087039 Water level in MH-069 was found 7.1 below water level sensor.
The threshold was 11 below the water level sensor. Applicant initiated a CR to pump out water.
12/23/2017 AR-2537706 2C condensate pump cable were tan delta tested in 2014.
Cable 2H0207A phase C tested further study required (IR2412089). This is 2 years after the last test, which would satisfy the requirement of an increased test frequency.
08/04/2015 Document Title Revision / Date AR-1093787 This issue is written to create an AR-to perform work required by Rev.1 of OP evaluation 10-002. The power cable feeding 0CX026 shall be tan delta tested, removed and sent to a lab for analysis. A new cable shall be installed in its place.
07/23/2010 AR-4094210 Per mysmart cover website MH-106 has a high level advisory.
An applicant staff notified shift supervisor and water was pumped out.
01/16/2018 SLRA AMP B.2.1.40, Electrical Insulation for Inaccessible Instrument and Control Cables Not Subject to 10 CFR 50.49 Environmental Qualification Requirements Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: cable, manhole, submerge, insulation, sump pump, degraded cable, and vault.
The table below lists the documents that were reviewed by the staff and were found relevant to the Electrical Insulation for Inaccessible Instrument and Control Cables Not Subject to 10 CFR 50.49 EQ Requirements. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-4087254 Water level in MH-042 was found 25.8 below the water level sensor. The threshold was 26.0 below the water level sensor.
Applicant initiated a CR to pump out water.
12/25/2017 AR-4087039 Water level in MH-069 was found 7.1 below water level sensor.
The threshold was 11 below the water level sensor. Applicant initiated a CR to pump out water.
12/23/2017 AR-4094210 Per mysmart cover website, MH-106 has a high level advisory.
An applicant staff notified a shift supervisor. Water was pumped out.
01/16/2018 AR-4095189 Water level in MH-042 was found 20.4 below water level sensor. Applicant pumped water out.
01/10/2018 AR-4087163 Water level in MH-062 was found 13 below the water level sensor. The threshold was 24 below the water level sensor.
Applicant initiated a CR to pump out water.
12/25/2017 SLRA AMP B.2.1.41, Electrical Insulation for Inaccessible Low-Voltage Power Cables Not Subject to 10 CFR 50.49 Environmental Qualification Requirements Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: cable, manhole, submerge, insulation, sump pump, tan delta, degraded cable, and vault.
The table below lists the documents that were reviewed by the staff and were found relevant to the Electrical Insulation for Inaccessible Low-Voltage Power Cables Not Subject to 10 CFR 50.49 EQ Requirements. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-4087254 Water level in MH-042 was found 25.8 below the water level sensor. The threshold was 26.0 below the water level sensor.
Applicant initiated a CR to pump out water.
12/25/2017 AR-4087039 Water level in MH-069 was found 7.1 below water level sensor.
The threshold was 11 below the water level sensor. Applicant initiated a CR to pump out water.
12/23/2017 AR-4094210 Per mysmart cover website, MH-106 has a high level advisory.
An applicant staff notified his shift supervisor. Water was pumped out.
01/16/2018 AR-1093787 This issue is written to create an AR to perform work required by Rev.1 of OP evaluation 10-002. The power cable feeding OCX026 shall be tan delta tested, removed and sent to a lab for analysis. A new cable shall be installed in its place.
07/23/2010 AR-4087163 Water level in MH-062 was found 13 below the water level sensor. The threshold was 24 below the water level sensor.
Applicant initiated a CR to pump out water.
12/25/2017 SLRA AMP B.2.1.42 Metal Enclosed Bus Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: enclosed bus, electrical bus, connections, elastomers, gaskets, MEB, cable bus, and metal enclosed bus.
The table below lists the document that was reviewed by the staff and was found relevant to the Metal Enclosed Bus program. This document was provided by the applicant or was identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00871272 3B transformer to isophase bus transition piece and flex links were found degraded. Parts were replaced as needed and an extent of condition IR-873040 was created.
02/23/2009 SLRA AMP B.2.1.43 Electrical Cable Connections Not Subject to 10 CFR 50.49 Environmental Qualification Requirements Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: cable connection, increased resistance, loose connection, discoloration, thermal cycling, thermography, ohmic heating, chemical contamination, corrosion, vibration, and oxidation.
The table below lists the documents that were reviewed by the staff and were found relevant to the Electrical Cable Connections Not Subject to 10 CFR 50.49 Environmental Qualification Requirements program. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00813174 Thermography on turbine building crane identified anomalies.
Connections were tightened and monitoring was increased.
10/02/2018 AR-01513403 Motor control center (MCC) load side connection showed a delta temperature (T) of 22 degrees. Per MA-AA-716-230-1003, delta T of 14 to 50 is blue action level. Connections were tightened and rescanned.
06/12/2013 AR-01129217 Discovered overheating of circulating water pump 3A.
Developed a list of other motors that may have similar field connections.
10/20/2010 AR-01118854 Checked cables and connectors of 2D main steam line radiation monitor and replaced connector.
10/28/2010 AR-01112568 Found a burnt motor connection insulation. Cause found to be one-bolt connection instead of two. Also dielectric grease was not used. Installed belleville washers and two bolts. Also affects other motors in core spray, EDG, service water systems.
01/26/2011 SLRA AMP XI.S6, Concrete / Inaccessible Areas Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: concrete, froz, freeze, thaw, elevated temperature, crack, expan, pattern, leach, settle.
The table below lists the document that was reviewed by the staff and was found relevant to the concrete and inaccessible areas. This document was provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01341413 ECT has calcium like deposits leaching out of building 03/15/2012 SLRA AMP B.2.4.1 Pressurizer Surge Line Fatigue Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: surge line, through wall, thermal, pressurizer, fatigue, cracking, leakage, failure, and weld.
The table below lists the documents that were reviewed by the staff and were found relevant to the Pressurizer Surge Line Fatigue program. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Description Revision / Date AR-00417806 Insurge during pressurizer bubble collapse (Unit 4) 04/11/2005 AR-00514901 Problem with oxygen removal from the pressurizer (Unit 4) 05/05/2008 AR-00453780 PCV-4-455A pressurizer spray valve has an active packing leak (Unit 4) 04/30/2008 AR-02102753 Current procedures do not count pressurizer fatigue cycles 01/14/2016 AR-02130519 RCS/pressurizer pressure oscillating (Unit 3) 05/08/2016 SLRA AMP B 3.1.1, Fatigue Monitoring Program Audit Activities. The staff conducted an independent search of applicants operating experience database using keywords: "Fatigue Monitoring," "FatiguePro," cycles, fatigue usage, cumulative usage and usage factor.
The table below lists the documents that were reviewed by the staff and were found relevant to the Fatigue Monitoring Program. These documents were provided by applicant or identified in the staffs search of applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00915984 Update of PB fatigue monitoring program 04/28/2012 AR-01555998 RPV fatigue monitoring program documentation 05/25/2019 AR-04021824 SLR: improper close out of FLR FMP commitment 01/09/2018 AR-03952475 Fatigue & transient monitoring program deficiencies 03/28/2017 AR-04067104 Fatigue monitoring program recommendations 07/28/2018 SLRA 3.1.2.2.5, Reactor Pressure Vessel Underclad Cracking Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Crack, SCC, Vessels, and Weld.
No significant plant-specific operating experience associated with Reactor Pressure Vessel Underclad Cracking was noted by the staff during its review.
SLRA AMP B.3.1.3, Environmental Qualification of Electric Equipment Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: EQ, environmental qualification equipment, environmental qualification component, and environmental qualification - aged related degradation.
The table below lists the documents that were reviewed by the staff and were found relevant to the Environmental Qualification of Electric Equipment. These documents were provided by the applicant or were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-4095189 It was recommended that the static O-ring pressure switch, model N-AA3, be replaced as soon as reasonable possible and not to approach the maximum EQ adjusted qualified life.
Because no EQ preventive maintenance existed for replacement due to extensive EQ period.
01/19/2018 AR-4021418 Applicant has identified that the bendix connectors associated with 3AC872 and 3BC872 (drywell/torus CAC/CAD analog PNL. A/B) have not been replaced within the EQ qualified life of 14.86 years per EQ binder PB-037A. Work order history indicated the bendix connectors were last replaced in 1994.
Applicant created an assignment to EQ engineer to determine from the temperature data if there was a basis for providing an extended qualified life and replaced all eight bendix connectors as soon as possible.
06/12/2017 AR-4025572 As described in IR 4005664, PS-9087F did not have an EQ maintenance task to replace the subject pressure switch before the end of 45 year EQ life. Applicant wrote an IR and created work order to replace the pressure switch.
06/26/2017 AR-4095177 Applicant identified during plant extension per IR 3997737 03, pressure switches must be replaced per EQ requirements.
Applicant would create an IR for each PS-2(3)10-120A/B/C/E/F/G/H switch for EQ replacement.
01/19/2018 AR-2480628 As the result of recent revision to EQ life calculation, the qualified life of 8 relays have been reduced from 25 years to 19.31 years. Initial investigation has determined that these components were last replaced under their respective PMS in 1989. Based on the new EQ life calculations, these relays were due for replacement in June of 2008. Design engineering to determine actual EQ life of these components and provide due dates for replacement.
04/06/2015 SLRA TLAA 4.2.1, Neutron Fluence Analyses Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Crack, SCC, Vessels, and Weld.
No significant plant-specific operating experience associated with TLAA 4.2.1, Neutron Fluence Analyses, was noted by the staff during its review.
SLRA TLAA 4.2.3, Reactor Vessel Adjusted Reference Temperature (ART) Analyses Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Crack, SCC, Vessels, and Weld.
No significant plant-specific operating experience associated with TLAA 4.2.3, Reactor Vessel Adjusted Reference Temperature (ART) Analyses. was noted by the staff during its review.
SLRA TLAA Section 4.2.4, Reactor Vessel Pressure-Temperature (P-T) Limits Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: pressure-temperature, P-T, and PTLR.
No significant plant-specific operating experience associated with TLAA Section 4.2.4, Reactor Vessel Pressure-Temperature (P-T) Limits, was noted by the staff during its review.
SLRA TLAA Section 4.2.5, Reactor Vessel Circumferential Weld Failure Probability Analyses Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: circumferential weld, shell weld, 14R-51.
No significant plant-specific operating experience associated with TLAA Section 4.2.5, Reactor Vessel Circumferential Weld Failure Probability Analyses, was noted by the staff during its review.
SLRA TLAA Section 4.2.6, Reactor Vessel Axial Weld Failure Probability Analyses Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: axial weld, shell weld, 14R-51.
The table below lists the documents that were reviewed by the staff and were found relevant to TLAA Section 4.2.6, Reactor Vessel Axial Weld Failure Probability Analyses. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-02458945 P3R20 scope add - RPV Shell welds 03/27/2015 AR-02510740 P2R21 IVVI executive challenge action items 12/30/2015 AR-02570753 3R20 ISI - UT exam results of RPV shell welds 11/21/2015 SLRA TLAA 4.2.7, Reactor Vessel Reflood Thermal Shock Analysis Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Crack, SCC, Vessels, and Weld.
No significant plant-specific operating experience associated with TLAA 4.2.7, Reactor Vessel Reflood Thermal Shock Analysis, was noted by the staff during its review.
SLRA TLAA 4.2.8, Core Shroud Reflood Thermal Shock Analysis Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Crack, SCC, Vessels, and Weld.
No significant plant-specific operating experience associated with TLAA 4.2.8, Core Shroud Reflood Thermal Shock Analysis, was noted by the staff during its review.
SLRA TLAA Section 4.2.13, Replacement Core Plate Plug Extended Life Irradiation -
Enhanced Stress Relaxation Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: core plate, mandrel spring, plugs.
No significant plant-specific operating experience associated with TLAA Section 4.2.13, Replacement Core Plate Plug Extended Life Irradiation - Enhanced Stress Relaxation, was noted by the staff during its review.
SLRA TLAA Section 4.2.14, First License Renewal Application Core Shroud IASCC and Embrittlement Analysis Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: core shroud, IASCC, embrittlement.
The table below lists the document that was reviewed by the staff and was found relevant to TLAA Section 4.2.14, First License Renewal Application Core Shroud IASCC and Embrittlement Analysis. This document was identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00798768 Deviation from BWRVIP needed guidance 08/22/2008 SLRA TLAA 4.2.15, Unit 3 Core Spray Replacement Piping Bolting Loss Of Preload Evaluation Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Crack, SCC, Vessels, and Weld.
No significant plant-specific operating experience associated with TLAA 4.2.15, Unit 3 Core Spray Replacement Piping Bolting Loss of Preload Evaluation, was noted by the staff during its review.
SLRA AMP TLAA Section 4.3.1 Metal Fatigue of Class 1 Components, 4.3.2 Metal Fatigue of Piping Components, and 4.3.3 Environmentally Assisted Fatigue Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: design cycles, CUF, EAF and fatigue cracking.
No significant plant-specific operating experience associated with the TLAAs Section 4.3.1 Metal Fatigue of Class 1 Components, 4.3.2 Metal Fatigue of Piping Components, and 4.3.3 Environmentally Assisted Fatigue, was noted by the staff during its review.
SLRA TLAA Section 4.3.4, Reactor Vessel Underclad Cracking Audit Activities. The staff conducted an independent search of the applicants operating experience database using various combinations of the keywords: reactor vessel, RPV, cladding, crack, and flaw.
No significant plant-specific operating experience associated with TLAA Section 4.3.4, Reactor Vessel Underclad Cracking, was noted by the staff during its review.
SLRA TLAA 4.3.4, ASME Section III, Class 2, Class 3, and ANSI B31.1 Allowable Stress Analyses Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Stress and Fatigue.
No significant plant-specific operating experience associated with the ASME Section III, Class 2, Class 3, and ANSI B31.1 Allowable Stress Analyses was noted by the staff during its review.
SLRA TLAA Section 4.3.5, Reactor Coolant Pump Flywheel Audit Activities. The staff conducted an independent search of the applicants operating experience database using the keyword: flywheel.
No significant plant-specific operating experience associated with TLAA Section 4.3.5, Reactor Coolant Pump Flywheel, was noted by the staff during its review.
SLRA TLAA Section 4.3.6.1, Generic BWR Fatigue Analyses for Various Reactor Vessel Internal Components Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: design cycles, CUF, EAF, fatigue, and flaw.
No significant plant-specific operating experience associated with TLAA Section 4.3.6.1, Generic BWR Fatigue Analyses for Various Reactor Vessel Internal Components, was noted by the staff during its review.
SLRA TLAA Section 4.3.6.2, Generic BWR Fatigue Analyses for the Core Shroud Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: design cycles, CUF, EAF, fatigue, and flaw.
No significant plant-specific operating experience associated with TLAA Section 4.3.6.2, Generic BWR Fatigue Analyses for the Core Shroud, was noted by the staff during its review.
SLRA TLAA Section 4.3.6.3, Core Shroud Support Fatigue Analysis Reevaluation Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: design cycles, CUF, EAF, fatigue, and flaw.
No significant plant-specific operating experience associated with TLAA Section 4.3.6.3, Core Shroud Support Fatigue Analysis Reevaluation, was noted by the staff during its review.
SLRA TLAA 4.3.6.4, Jet Pump Diffuser/Core Shroud Support Plate Fatigue Analysis Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Fatigue and Stress.
No significant plant-specific operating experience associated with the TLAA 4.3.6.4, Jet Pump Diffuser/Core Shroud Support Plate Fatigue Analysis, was noted by the staff during its review.
SLRA TLAA Section 4.3.6.5, Replacement Steam Dryer Stress Report and Fatigue Evaluation Audit Activities. The staff conducted an independent search of Exelons operating experience database.
During its audit, the staff reviewed onsite documentation provided by the applicant. The table below lists the documents that were reviewed by the staff and were found relevant to TLAA Section 4.3.6.5, Replacement Steam Dryer Stress Report and Fatigue Evaluation. The staff will document its review of relevant operating experience in the SER RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date PB-TLAABD, PART 1 TLAA basis document - Part 1 - TLAA identification Revision 0 / September 2017 PB-TLAABD, PART 2 TLAA basis document - Part 2 - TLAA evaluation, Section 4.3.6.5, replacement steam dryer stress report and fatigue evaluation Revision 0 PACKAGE ADAMS ACCESSION NO.
ML122860201 License amendment request (LAR) - extended power uprate (EPU) for Peach Bottom, Units 2 and 3 09/28/2012 EPRI REPORT NO.
3002010541 BWRVIP-139, Revision 1-A: BWR vessel and internals project, steam dryer inspection and flaw evaluation guidelines 11/2017 SLRA TLAA Section 4.5, Concrete Containment Tendon Prestress Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Liftoff, Force, Trending, and Tendon Surveillance.
The table below lists the documents that were reviewed by the staff and were found relevant to the LRA Section TLAA Section 4.5, Concrete Containment Tendon Prestress. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-00438310 High as-found liftoff forces, tendon 12V06 of Unit 3 (force> 70% Guts) 03/02/2007 AR-00482549 Unable to achieve liftoff on tendon 56V20 of Unit 4 01/26/2007 AR-01747712 Vertical tendon (34V08) of Unit 3, unable to be stressed to overstress force 03/22/2012 AR-01748216 Dome tendon (1D12) of Unit 3, unable to be stressed to overstress force 03/24/2012 AR-01751146 Horizontal tendon (42H26) of Unit 3, unable to be stressed to 80% overstress 04/02/2012 AR-02190686 Results of Unit 4 during 45th year tendon surveillance 03/10/2017 AR-00437147 Buttonheads missing from tendon number 13H31 of Unit 3 (calculation of lift-off forces/trending) 01/30/2007 SLRA TLAA Sections 4.6, Primary Containment Fatigue Analyses; 4.6.1 Primary Containment Structures, Penetrations, and Associated Components with Fatigue Analyses; 4.6.2 Containment Process Line Penetration Bellows Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Fatigue, Torus, Penetration, and Bellows.
The table below lists the documents that were reviewed by the staff and were found relevant to the TLAA Section 4.6, Primary Containment Fatigue Analyses. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-04031330 Rain water intrusion sealing suggestion 07/13/2017 AR-01086963 Torus dewatering drain valve found degraded 07/01/2010 AR-01398861 3C RHR HPSW return pipe penetration seal degraded 08/09/2012 AR-00742879 DW penetration N-3 not iaw ASME xi exam, exemption requirements 02/29/2008 AR-04067104 Fatigue monitoring program recommendation 10/26/2017 AR-01290273 GEH Part 21 SC 11-10: interruption/delay in RHR drywell SPR 11/14/2011 AR-04047489 3K srv bellows leak alarm 08/30/2017 AR-01175843 Penetration seal is being pushed out 02/16/2011 SLRA TLAA Section 4.7.1, Cranes Cyclic Loading Analyses Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: crane, crack, fatigue, cycle, defor, and deflect.
No significant plant-specific operating experience associated with the TLAA Section 4.7.1, Crane Cyclic Loading Analyses, was noted by the staff during its review.
SLRA TLAA Section 4.7.4, Fracture Mechanics Analysis of ISI Reportable Indications for Group I Piping: As-Forged Laminar Tear in a Unit 3 Main Steam Elbow Near Weld 1-B-3BC-LDO Discovered During Preservice UT Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: Stress and cracking.
No significant plant-specific operating experience associated with TLAA Section 4.7.4, Fracture Mechanics Analysis of ISI Reportable Indications for Group I Piping: As-Forged Laminar Tear in a Unit 3 Main Steam Elbow Near Weld 1-B-3BC-LDO Discovered During Preservice UT, was noted by the staff during its review.
SLRA 147.05 TLAA Section 4.7.5, Unit 3 Core Spray Replacement Piping Fatigue and Leakage Assessment Audit Activities. The staff conducted an independent search of Exelons operating experience database.
The table below lists the documents that were reviewed by the staff and were found relevant to the TLAA Section 4.7.5, Unit 3 Core Spray Replacement Piping Fatigue and Leakage Assessment. These documents were provided by Exelon or were identified in the staffs search of Exelons operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date GEH-004N3501 Peach Bottom Atomic Power Station Unit 3 piping replacement design life extension evaluation Revision 0, August 2017 SLRA TLAA Section 4.7.6, Crane Load Cycle Limit Audit Activities. The staff conducted an independent search of the applicants operating experience database using keywords: crane, crack, fatigue, cycle, defor, and deflect.
No significant plant-specific operating experience associated with the TLAA Section 4.7.6, Crane Load Cycle Limit, was noted by the staff during its review.
AMR Item OE Input Not Associated with an AMP The table below lists the documents that were reviewed by the staff and were found relevant to the stainless steel, nickel alloy, and aluminum further evaluations. These documents were identified in the staffs search of the applicants operating experience database. The staff will document its review of relevant operating experience in the SER.
RELEVANT DOCUMENTS REVIEWED Document Title Revision / Date AR-01273829 Unit 3 reactor core isolation cooling stainless steel tubing extent of cause investigation 10/06/2011 AR-01267439 High pressure coolant injection (HPCI) sensing line failure resulting from chloride contaminated material extent of cause investigation 09/24/2011 AR-1233016 Apparent cause report for leak on Unit 3 HPCI turbine steam supply pressure sensing line tubing 06/25/2011
- 3. Applicant Personnel Contacted During Audit PARTICIPANTS ORGANIZATION John Hilditch Exelon Paul Weyhmuller Exelon John Hufnagel Exelon Michael Baker Exelon Brian Placido Exelon James Annett Exelon Leah Ritz Exelon Mary Kowalski Exelon Debora Spamer Exelon Scott Kauffman Exelon Peter Tamburro Exelon
- 4. Exit Meeting An exit meeting was held with the applicant on September 27, 2018, to discuss the results of the operating experience audit. The staff may issue requests for additional information to support completion of the staffs SLRA review.