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Category:Letter
MONTHYEARML24019A2012024-01-19019 January 2024 Fourth 10-Year Interval, Second Period Owners Activity Report Number 1R24 ML24019A1362024-01-18018 January 2024 Inservice Inspection Request for Information ML24012A2452024-01-12012 January 2024 Response to Request for Additional Information to Proposed Method to Manage Environmentally Assisted Fatigue for the Pressurizer Surge Line ML24010A1532024-01-10010 January 2024 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection ML23341A0062023-12-21021 December 2023 Project Manager Assignment IR 05000528/20230112023-12-18018 December 2023 License Renewal Inspection Report 05000528/2023011 ML23335A0782023-11-30030 November 2023 Independent Spent Fuel Storage Installation - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23325A1602023-11-17017 November 2023 Supplemental Submittal - Relief Request 70 Proposed Alternatives for Pressurizer Lower Shell Temperature Nozzle IR 05000528/20234032023-11-13013 November 2023 NRC Security Inspection Report 05000528 2023403, 05000529 2023403, 05000530 2023403 (Full Report) ML23311A2082023-11-0909 November 2023 Reassignment of U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch IV ML23299A3052023-10-26026 October 2023 Response to Request for Additional Information Relief Request 70 Proposed Alternatives for Pressurizer Lower Shell Temperature Nozzle IR 05000528/20230032023-10-17017 October 2023 Integrated Inspection Report 05000528 2023003 and 05000529 2023003 and 05000530 2023003 ML23270B9232023-09-28028 September 2023 Notification of Age-Related Degradation Inspection (05000528/2024012, 05000529/2024012, and 05000530/2024012) and Request for Information ML23251A2332023-09-13013 September 2023 Notification of Post Approval Site Inspection for License Renewal and Request for Information Inspection (05000528/2023011) ML23241B0182023-09-13013 September 2023 Use of Honeywell Mururoa V4F1 and MTH2 Supplied Air Suits within Respiratory Protection Program IR 05000528/20243012023-09-0606 September 2023 Notification of NRC Initial Operator Licensing Examination 05000528/2024301; 05000529/2024301; 05000530/2024301 IR 05000528/20230102023-08-22022 August 2023 Biennial Problem Identification and Resolution Inspection Report 05000528/2023010, 05000529/2023010 and 05000530/2023010 IR 05000528/20230052023-08-21021 August 2023 Updated Inspection Plan for Palo Verde Nuclear Generating Station, Units 1, 2, and 3 (Report 05000528/2023005 and 05000529/2023005 and 05000530/2023005) ML23222A2762023-08-10010 August 2023 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Transportable Storage Canister Identification Numbers AMZDFX175 and AMZDFX176 and Vertical Concrete Cask Identification Numbers AMZDNE175, and AMZDNE176 ML23199A2942023-08-0909 August 2023 Issuance of Amendment Nos. 221, 221, and 221, to Revise Technical Specifications to Adopt TSTF-107, Separate Control Rods That Are Untrippable Versus Inoperable IR 05000528/20230022023-08-0808 August 2023 Integrated Inspection Report 05000528/2023002 and 05000529/2023002 and 05000530/2023002 ML23207A2482023-07-26026 July 2023 License Renewal Pressurizer Surge Line Inspection ML23188A1872023-07-0707 July 2023 Fourth 10-Year Interval, Second Period Owners Activity Report Number 2R24 ML23166B0832023-07-0505 July 2023 Independence Spent Fuel Storage Installation - Issuance of Exemption ML23181A1602023-06-30030 June 2023 2 to Updated Final Safety Analysis Report, and Revision 3 to Operations Quality Assurance Program Description ML23180A2222023-06-29029 June 2023 Application to Revise Technical Specifications (TS) 3.5.1, Safety Injection Tanks (Sits) - Operating, TS 3.5.2, Safety Injection Tanks (Sits) - Shutdown, and TS 3.6.5, Containment Air Temperature ML23181A0772023-06-29029 June 2023 Program Review - Simulator Testing Methodology ML23157A1292023-06-0101 June 2023 Annual Report of Guarantee of Payment of Deferred Premium ML23144A3722023-05-24024 May 2023 Response to Regulatory Issue Summary (RIS) 2023-01, Preparation and Scheduling of Operator Licensing Examinations ML23143A3912023-05-23023 May 2023 Independent Spent Fuel Storage Installation - Request for Exemption from NAC-MAGNASTOR Certificate of Compliance 72-1031 - Cask Lid Batch 3 Design Requirements ML23145A2772023-05-17017 May 2023 10-PV-2023-05 Post-Exam Comments ML23132A3392023-05-12012 May 2023 Application to Revise Technical Specifications 3.3.11 to Adopt TSTF-266-A, Revision 3, Eliminate the Remote Shutdown System Table of Instrumentation and Controls IR 05000528/20230012023-05-0808 May 2023 and Independent Spent Fuel Storage Installation - Integrated Inspection Report 05000528/2023001 and 05000529/2023001 and 05000530/2023001 and 07200044/2023001 ML23128A0692023-05-0808 May 2023 Notification of Biennial Problem Dentification and Resolution Inspection and Request for Information ML23122A1822023-04-29029 April 2023 Transmittal of Technical Specification Bases Revision 76 ML23122A1912023-04-29029 April 2023 Unit 1 Core Operating Limits Report Revision 32, Unit 2 Core Operating Limits Report Revision 25, Unit 3 Core Operating Limits Report Revision 31 ML23116A2772023-04-26026 April 2023 Independent Spent Fuel Storage Installation, Annual Radioactive Effluent Release Report 2022 ML23115A4012023-04-26026 April 2023 Review of the 2022 Steam Generator Tube Inspections During Refueling Outage 23 ML23115A4982023-04-25025 April 2023 2022 Annual Environmental Operating Report IR 05000528/20230122023-04-19019 April 2023 Notification of Commercial Grade Dedication Inspection (05000528/2023012, 05000529/2023012, and 05000530/2023012) and RFI ML23108A0342023-04-18018 April 2023 NRC Initial Operator Licensing Examination Approval 05000528/2023301; 05000529/2023301; 05000530/2023301 ML23103A4642023-04-13013 April 2023 Annual Radiological Environmental Operating Report 2022 ML23103A4312023-04-13013 April 2023 Emergency Core Cooling System Performance Evaluation Models, 10 CFR 50.46(a)(3)(ii) Annual Report for 2022 IR 05000528/20224012023-04-13013 April 2023 Cyber Security Inspection Report 05000528/2022401 and 05000529/2022401 and 05000530/2022401 ML23102A3292023-04-12012 April 2023 Application for Authorized Use of Mururoa Single-Use, Supplied Air Suits, Models V4F1 and MTH2 ML23102A3242023-04-12012 April 2023 Supplement to Application to Revise Technical Specifications to Adopt TSTF-107-A, Separate Control Rods That Are Untrippable Versus Inoperable ML23089A4002023-03-30030 March 2023 Consolidated Decommissioning Funding Status Report - 2022 ML23088A4012023-03-30030 March 2023 Project Manager Assignment IR 05000528/20234022023-03-29029 March 2023 and 3 - NRC Security Inspection Report 05000528-2023402, 05000529-2023402, and 05000530-2023402, (Cover Letter Only) ML23080A3002023-03-21021 March 2023 Present Levels of Financial Protection 2024-01-19
[Table view] Category:Deficiency Report (per 10CFR50.55e and Part 21)
MONTHYEARML20114E3172020-04-23023 April 2020 Final 10 CFR Part 21 Report for Masoneilan Model 8005N Transducer ML20042E2522020-01-31031 January 2020 EN 54485 Target Rock Redacted Update to Part 21 Report on Defect of Modification of Valve Component and Main Disc Lift Misadjustment ML20029D1612020-01-21021 January 2020 10 CFR Part 21 Report, Notification of a Defect Modification of a Valve Component and Main Disc Lift Misadjustment ML19323C9712019-11-15015 November 2019 Interim 10 CFR 21 Report for Masoneilan Model 8005N Transducer ML19261A1942019-09-0606 September 2019 Final Report (Log # 2019-22-00) (Event# EN 54215) - Non-Destructive Examination (Liquid Penetrant) Performance of Components by an Un-Qualified Employee ML18302A2282018-10-19019 October 2018 Itt Enidine - USNRC 10CFR Part 21 Notification ML17312A8422017-11-0808 November 2017 Transmittal of Final Part 21 Report for Westinghouse 1000 Horsepower Motor ML17188A4222017-06-26026 June 2017 Itt Enidine, Inc - Part 21 - Potential Transducer Component Defect ML17165A4072017-06-0909 June 2017 Part 21 Report - 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Report No. 10CFR21-0110, Rev. 0, CR7 Diode Wiring Reversed: AVR Panel P/N D72-12200-100-PVNGS ML13339A7682013-11-13013 November 2013 Letter from Tom Homer Notification of Part 21 Report on a CR7 Diode Wiring Reversed on the Automatic Voltage Regular (AVR) Panels for Palo Verde IR 07200122/20001002013-11-13013 November 2013 Engine Systems, Inc., 10CFR21 Reporting of Defects and Non-Compliance - Report No. 10CFR21-0110, Rev. 0, CR7 Diode Wiring Reversed: AVR Panel P/N D72-12200-100-PVNGS ML13261A1512013-09-10010 September 2013 Part 21 Report - Improper Dedication of Actuator Parts ML13238A2532013-08-21021 August 2013 Notification of Potential Part 21 Report - Foxboro Power Supply Potential Failures Due to Defective the Wraps and Holders ML13165A3422013-06-12012 June 2013 60-Day Interim Report Involving an Evaluation of a Design Change to Magne-Blast Circuit Breakers ML13122A1272013-04-30030 April 2013 Notification of Potential Part 21 Re Brackets Used Proximity Switches Installed Upside Down ML13101A1232013-04-0909 April 2013 Part 21 - Defect Due to Change in Manufacturing Process Causing Relay Failure in Safety Related Systems ML13100A3572013-04-0808 April 2013 Westinghouse, Updated Notification of a Defect Pursuant to Requirements 10CFR21 ML13093A1532013-04-0202 April 2013 Part 21 Report - Foxboro Power Supply Potential Failures Due to Defective Tie Wraps and Holders ML13079A3202013-03-18018 March 2013 Notification of Potential Part 21 Interim Report Re Possible Deviation or Defect in Nuclear Qualified High Efficiency Particulate Air Filters ML12352A1232012-12-13013 December 2012 60-Day Interim Report Involving an Evaluation of a Design Change to Magne-Blast Circuit Breakers ML12348A1362012-12-13013 December 2012 Part 21 60-Day Interim Report Notification: Adequacy of Design Change in Am Magne-Blast Circuit Breakers ML12346A3002012-12-0707 December 2012 Part 21 Report - Brackets Used Proximity Switches Installed Upside Down ML12319A4732012-11-0909 November 2012 Interim Part 21 Report for Flowserve Four Inch Regulating Value ML12318A0412012-11-0808 November 2012 Part 21 Report - 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Report No. 10CFR21-0098, Rev. 3, Amot Thermostatic Valve Element P/N: 9760X ML11336A3692011-12-0101 December 2011 Notification of Potential Part 21 Interim Report on Thermostatic Valve Failure on Palo Verde EDG ML11193A0072011-07-0909 July 2011 Part 21 Notification of Valve Failed Leak Test Due to a Disc/Shaft Assembly Machining Issue ML11103A0162011-04-0505 April 2011 Engine Systems, Inc., 10CFR21 Reporting of Defects and Non-Compliance, Report No. 10CFR21-0098, Rev. 1 ML1109701512011-04-0101 April 2011 Interim Report on Thermostatic Valve Failure on Palo Verde EDG ML1109506582011-03-23023 March 2011 Submittal of Defect Discovered on Asea Brown Boveri Abb K600S 480 Vac Class 1E Breaker - Bell Alarm Switch Bracket Misalignment ML1105908862011-02-24024 February 2011 Notification of Potential Part 21 Report - Misaligned Bell Alarm Switch Brackets on 480 Vac Class 1E Circuit Breakers ML1030601022010-10-29029 October 2010 Notification of Potential Part 21 Transfer of Information Concerning Control Components Inc. (CCI) Drag Valves 2020-04-23
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10 CFR 21.21 Ai-AA subsidiary of Pinnacle West Capital Corporation John H. Hesser Mail Station 7605 Palo Verde Nuclear Vice President Tel. 623-393-5553 P.O. Box 52034 Generating Station Nuclear Engineering Fax 623-393-6077 Phoenix, Arizona 85072-2034 102-06335-JHH/DCE March 23, 2011 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)Units 1, 2, and 3 Docket No. STN 50-528, STN 50-529, and STN 50-530 License No. NPF 41, NPF 51, and NPF 74 ABB K600S 480 VAC Class IE Breaker Defect -Bell Alarm Switch Bracket Misalignment Enclosed please find a written notification of a defect discovered on Asea Brown Boveri (ABB) K600S 480 VAC Class 1E breakers.
This report is being submitted pursuant to 10 CFR 21.21(d)(1).
In accordance with 10 CFR 50.4, copies of this notification are being forwarded to the NRC Regional Office, NRC Region IV and the Senior Resident Inspector.
If you have questions regarding this submittal, please contact Marianne Webb, Section Leader, Regulatory Affairs, at (623) 393-5730.Arizona Public Service Company makes no commitments in this letter.Sin erely, DCM/RAB/TNW/MNW/DCE/gat Enclosure cc: E. E. Collins Jr. NRC Region IV Regional Administrator L. K. Gibson NRC NRR Project Manager for PVNGS (send electronic and paper)J. R. Hall NRC NRR Project Manager (send electronic and paper)M. A. Brown NRC Senior Resident Inspector for PVNGS A member of the STARS (Strategic Teaming and Resource Sharing) Alliance*Callaway 0 Comanche Peak
- Diablo Canyon e Palo Verde *San Onofre
- South Texas *Wolf Creek Enclosure ABB K600S 480 VAC Class I E Breaker Defect Bell Alarm Switch Bracket Misalignment 1
Enclosure ABB K600S 480 VAC Class 1 E Breaker Defect Bell Alarm Switch Bracket Misalignment On February 15, 2011, Palo Verde Nuclear Generating Station (PVNGS) completed an evaluation of prior deviations related to the alignment of bell alarm switches installed in Asea Brown Boveri (ABB) K-600S 480 VAC Class 1 E circuit breakers.
If the breakers had been placed into service as received, the misaligned bell alarm switch brackets could have prevented the automatic or remote closure of the breakers installed in safety-related applications.
The listed reporting officer received the information related to the completed defect evaluation on February 22, 2011. The NRC Headquarters Operations Officer was notified on February 24, 2011, via Event Notification
#46639.Pursuant to 10 CFR 21.21 (d)(1), the following information is provided related to the identified defect, as required by 10 CFR 21.21 (d)(4): (i) Name and address of the individual or individuals informing the Commission.
John H. Hesser, Vice President, Nuclear Engineering Palo Verde Nuclear Generating Station Mail Station 7605 PO Box 52034 Phoenix, AZ 85072-2034 (ii) Identification of the facility, the activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.ABB/ITE K600S Class 1 E 480 VAC Circuit Breaker Manufacturer Part Number: KLS6E90176 (iii) Identification of the firm constructing the facility or supplying the basic component which fails to comply or contains a defect.ABB POWER T & D COMPANY PO Box 100524 Florence, SC 29501-0524 (iv) Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.The ABB K-600S breakers contain a protective indication feature related to the overcurrent trip. An overcurrent trip actuates the reset indicator which moves an armature roller away from the bell alarm switch (ABB part number 706747-T07/BBC) to open the alarm switch contact.The alignment of the bell alarm switch bracket affects the range of contact between the bell alarm switch and the reset indicator armature.
This alignment is critical because the vibration of breaker closure can cause the switch and the armature to lose contact momentarily to create an unintended 86 lock-out and trip the breaker open during the closure sequence.
The breaker will not be able to be re-closed until the 86 lock-out and the bell alarm switch have been manually reset. This defeats the safety function of the breaker to provide power to the supported component.
2 Enclosure ABB K600S 480 VAC Class 1 E Breaker Defect Bell Alarm Switch Bracket Misalignment The 86 lock-out feature is a protective circuit installed in the breaker enclosure and is not part of the purchased component.
The 86 lock-out uses the bell alarm indication of a faulted trip to prevent re-closure of the breaker until the lock-out is reset. The 86 lock-out circuit also trips the breaker open.(v) The date on which the information of such defect or failure to comply was obtained.Two instances were identified in which new or refurbished ABB K600S breakers failed pre-service testing due to the misalignment of the bell alarm switch brackets.
In each case, the bell alarm switch bracket was manually re-aligned to ensure that contact between the reset indicator and bell alarm switch remained intact during breaker closure.The first instance occurred on a refurbished breaker that failed testing on November 5, 2009.The quality control receipt inspection was completed on the breaker on October 2, 2009.The second instance occurred on a new breaker that failed testing on October 21, 2010. The quality control receipt inspection was completed on the breaker on June 3, 2010.The untimely evaluation and defect reporting have been entered into PVNGS's corrective action program. PVNGS completed an operability assessment for uses of the ABB K600S breakers that support components impacting Technical Specifications and concluded affected systems were OPERABLE.(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for, being supplied for, or may be supplied for, manufactured, or being manufactured for one or more facilities or activities subject to the regulations in this part.At PVNGS, each unit uses 34 ABB K600S circuit breakers in safety-related applications.
The station has not provided any of these breakers from its own stock to any other licensee.(vii) The corrective action which has been, is being, or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action.ABB provided PVNGS written instructions regarding adjustment of the bell alarm switch bracket, including tolerances to ensure the bell alarm switch and the reset indicator remain in contact during breaker closure. These were incorporated into the station's ABB K600S vendor manual on January 27, 2011.ABB is preparing a response to Vendor Corrective Action Report generated by PVNGS, issued to ABB on February 3, 2011. The intended response date was March 3, 2011. The response from ABB is pending.3 Enclosure ABB K600S 480 VAC Class 1E Breaker Defect Bell Alarm Switch Bracket Misalignment (viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licensees.
Licensees who use ABB K600S 480 VAC breakers in safety-related applications should review whether the bell alarm indication is also used to actuate a protective feature and evaluate vulnerability to this defect. Questions regarding the details of PVNGS design related to use of K600S breakers may be forwarded to Karl Bright, Electrical System Engineer, at Karl. Bright@aps.com.(ix) In the case of an early site permit, the entities to whom an early site permit was transferred.
Not applicable.
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