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Category:Deficiency Correspondence (per 10CFR50.55e and Part 21)
MONTHYEARML22075A2192021-11-29029 November 2021
10CFR21 Reporting of Defects and Non-Compliance - Engine Systems, Inc. Report No. 10CFR21-0133, Rev. 0 - Swing Check Valve, P/N ESl50359
ML19317D0932019-10-25025 October 2019
Engine Systems, Inc., 10CFR21 Reporting of Defects and Non-Compliance - Engine Systems, Inc. Report No. 10 CFR21-0127, Rev. 0, Emd Fuel Injectors - Seized Plunger and Bushing
ML19158A1302019-05-31031 May 2019
Curtiss-Wright Nuclear Division - Notification Report for Potential Part 21 Update
ML19078A0872019-03-0808 March 2019
Curtiss-Wright - Interim Notification Report for Potential Part 21 Update
ML19029A1552018-12-27027 December 2018
10 CFR21 Reporting of Defects and Non-Compliance - Engine Systems, Inc. Report No. 10CFR21-0123, Rev. 1
ML18353A4282018-11-30030 November 2018
Engine Systems, Inc., 10CFR21-0123, Rev. 0, for a 10CFR21 Reportable Condition on Emd Fuel and Soakback Pumps
ML18332A1222018-11-15015 November 2018
Curtiss-Wright - Interim Notification Report for Potential Part 21 Update
ML16328A3152016-11-22022 November 2016
Part 21 - Incorrect Capacitor Used on Circuit Boards
ML15259A5212015-09-10010 September 2015
Part 21 Report - Potential Failure of Electromatic Relief Valve Cutout Switches
ML15161A2302015-06-0404 June 2015
Part 21 Report Regarding Potential Failure of a Time Relay at Quad Cities
ML14210A0102014-07-23023 July 2014
Part 21 - Unseating of Valve Spring on Scram Solenoid Pilot Valve
ML14204A7072014-07-23023 July 2014
Completed Evaluation of Part 21 Potentially Reportable Condition Notification: Unseating of Valve Spring on SSPV
ML14079A0272014-03-13013 March 2014
Part 21 - Unseating of Valve Spring on Scram Solenoid Pilot Valve
ML13246A0872013-08-23023 August 2013
Nuclear Nonconformance Event Number 49302 - 10CFR21 Notification
ML13165A3422013-06-12012 June 2013
60-Day Interim Report Involving an Evaluation of a Design Change to Magne-Blast Circuit Breakers
ML13094A1772013-03-18018 March 2013
Notice to the U.S. Nuclear Regulatory Commission of a Possible Deviation or Defect in Nuclear Qualified High Efficiency Particulate Air Filters Manufactured by Aaf
ML13044A0752013-02-0808 February 2013
Part 21 - Completed Evaluation for Potential Error in Main Steam Line High Flow Calculational Methodology
ML12347A3082012-12-12012 December 2012
Part 21 60-Day Interim Report Notification: Error in Main Steam Line High Flow Calculational Methodology
ML12319A0122012-09-27027 September 2012
Error in Main Steam Line High Flow Calculational Methodology
ML12258A3992012-09-10010 September 2012
Potential Part 21 Issue Related to Tyco Timing Relay
ML12226A0022012-08-0202 August 2012
Revision to Notification Date 07/31/2012 Regarding Manufacturing Defect in a Timing Relay Which Prevents the Relay from Operating at a Specific Setting
ML12219A3042012-08-0202 August 2012
Potential Part 21 Issue Related to Tyco Timing Replay
ML12158A4472012-06-0606 June 2012
Part 21 60-Day Interim Report Notification - Closufailure of CRD Collet Retainer Tube/Outer Tube Weld
ML12094A3712012-04-0202 April 2012
Part 21 Report - Rosemount Pressure Transmitters with Nonzero Based Calibrations
ML12080A0792012-03-19019 March 2012
Dresser Consolidated, Part 21 - Capacity Failure or Pressure Relief Valve
ML1127000672011-09-26026 September 2011
GE-Hitachi Part 21 Reportable Condition Notification: Failure to Include Seismic Input in Channel-Control Blade Interference Customer Guidance
ML11136A2172011-05-12012 May 2011
U-Rings Fabricated with Incorrect Material
ML1025202192010-09-0303 September 2010
Part 21 - Failure to Include Seismic Input in Reactor Control Blade Customer Guidance
ML0907611882009-03-11011 March 2009
Part 21 Notification - Defective Hk and K-Line Circuit Breaker Tension Springs
ML0623700952006-08-21021 August 2006
Update to Part 21 Interim Report Notification: Failure Analysis of Core Shroud Repair Tie Rod Upper Support Crack
ML0232901622002-11-18018 November 2002
Final Report, Stability Option III: Possible Successive Confirmation Count Resets - Not Reportable
2021-11-29
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CURTISS/al Nuclear Division 4600 East Tech Dr.
- Cincinnati, OH 45245 Phone: 513.528.7900
- Fax: 513.528.9292 WRIGHT www.CWNuclear.com November 15, 2018 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001
Subject:
Interim Notification Report for Potential Part 21 update.
Dear Sir or Madam:
In reference to the Curtiss-Wright Interim Notification Report dated 10/8/2018 (Event No.
ML18289A457/Log No. 2018-24-00) for an EA?00-90964 limit switch failure, the following clarifications and updates are provided.
The subject switch was originally supplied by Curtiss-Wright to Exelon's Dresden plant.
Subsequently Dresden transferred the switch to Quad Cities where it was installed and found degraded and inoperable during a planned maintenance test. The initial notification of failure to Curtiss-Wright was by Quad Cities personnel, and not Dresden personnel. The switch was previously identified as Curtiss-Wright Tag# 5T34603, which was incorrect. The actual Tag# of the failed unit is 5T36403.
The failure is still under investigation and Curtiss-Wright has been in communication with the Manufacturer, Quad Cities personnel and Exelon Powerlabs personnel concerning the failure and application. A key factor in the failure appears to be heat related, specifically the switches operating temperature. As such, additional operating temperature data is being taken by Exelon personnel which will conclude in late February or early March 2019. Once this data is made available, a final conclusion as to the root cause of the failure can be determined.
We therefore request additional time to complete our evaluation and should have our final report issued by March 8th, 2019.
s~~
Tim Franchuk Director, Quality Assurance Curtiss-Wright Nuclear Division, Cincinnati Operations 513-201-2176 TFranchuk@CurtissWright.com
