ML121910334

USNRC 10CFR Part 21 Notification Regarding Potential Failures of Kraus and Naimer (K&N) M470 Spring Return Switches

ML121910334
Person / Time
Site:	Farley
Issue date:	07/02/2012
From:	Massey D Nutherm International
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML121910334 (3)

Text

2012/JUL11 02/MON 14:55L P. 002 Nutherm INERNArITO/A4, INC.

501 SOUTH ELEVENTH STREET MT. VERNON, ILLNQIS 62864 PHONE 61 8-244-6000 FAX 618-244-6641 July 2, 2012 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Subject USNRC 10CFR Part 21 Notification

Reference:

Potential Failures of Kmus and Naimer (K&N) M470 Spring Return Switches Gentlemen:

This is to notify the Nuclear Regulatory Commission, in accordance of the provisions of 10 CFR Part 21 of a potential deviation identified by Nuthern International, Inc.

On June 26, 2012 one M470 Spring Return Kraus and Naimer (K&N) switch, (part nuwber CA10 USN892-600 FT1 SoC G211 SO M470/DlA) failed at the Nutherm:facility.

The failed switch was returned to the manufacturer for failure analysis, On July 2, 2012 the manufacturer notified Nuthermn that the specific failure mechanism was spring failure on the "spring return". The failure was traced to a spring manufacturer supplyirig the manufacturing facility between November 1,2011 and June 29,2012.

Based on this information, M470 spring return switches man-factured dining this time period have the potential for this spring failure.

Nutherm has determined that the following site has received these switches from Nuthermn and is affected; Farley Nuclear Plant Sincerely, NUTHERM INTERNATIONAL, Inc.

David M. Mass President and COO DMM/abs

0710212012 U.S. Nuclear Regulatory Commission OperationsCenterEvent Report Page I Part 21 (PAR) Event# 48062 Rep Org: NUTHERM INTERNATIONAL, INC Notification Date /Time: 07/02/2012 15:31 (EDT)

Supplier: KRAUS AND NAIMER Event Date / Time: 06/26/2012 (CDT)

Last Modification: 07/02/2012 Region: 3 Docket #:

City: MT. VERNON Agreement State: Yes County: License #:

State: IL NRC Notified by: ADRIENNE SMITH Notifications: JONATHAN BARTLEY R2DO HQ Ops Officer: DONG HWA PARK PART 21 GROUP Emergency Class: NON EMERGENCY 10 CFR Section:

21.21 (d)(3)(i) DEFECTS AND NONCOMPLIANCE PART 21 - FAULTY SWITCH RESULTING FROM A FAILED SPRING "This is to notify the Nuclear Regulatory Commission, in accordance of the provisions of 10 CFR Part 21 of a potential deviation identified by Nutherm International, Inc.

"On June 26, 2012 one M470 Spring Return Kraus and Naimer (K&N) switch (part number CA10 USN892 - 600 FT1 SOC G211 SO M470/D1A) failed at the Nutherm facility.

"The failed switch was returned to the manufacturer for failure analysis. On July 2, 2012 the manufacturer notified Nutherm that the specific failure mechanism was spring failure on the "spring return." The failure was traced to a spring manufacturer supplying the manufacturing facility between November 1, 2011 and June 29, 2012.

"Based on this information, M470 spring return switches manufactured during this time period have the potential for this spring failure.

"Nutherm has determined that the following site has received these switches from Nutherm and is affected: Farley Nuclear Plant."

2012/JUL/02iMON 14:55 P.0001 F S a Ex 0'1'"SOUTH HMV N N 2ONE ELEVENTH, STREET""'IT, VERNON, ILLINOIS 62864*

164 -0FX1 -6 PHO-NE 618-244-15000. FAX 618-244,-6641 To: NRC Operations Center From; Adrienne-Smith Company: Nuclear Regulatory Center QA Manager Fax: 301-816-5151 Pages including Cover, 2 Phone: 301-816-5100 Date*; July 2,2012 CC: Nutherrn Project No: N/A Customer Project No: N/A SubjectL 10 CFR Part 21 Notification Regarding Kraus and Naimer M470 Spring Return Switches Attached please find the subject notification.

If you have any questions on the above, call me at 618-244-6000.

Adrienne B. Smith