ML18225A118
| ML18225A118 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood, Vogtle, 05200046  |
| Issue date: | 07/27/2018 |
| From: | Salsbury E AMETEK, Paragon Energy Solutions |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18225A118 (3) | |
Text
.AMETEK SOLIDSTATE CONTROLS Quality Assurance 875
Dearborn Drive,
Columbus, OH 43085 U.S.A.
Telephone: 614-846-7500; Direct: 614-410-6293 E-mail: ethan.salsbury@AMETEK.com July 27, 2018 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Attention: Document Control Desk
Subject:
Notification of Potential Defect - 10CFR Part 21 Product: Potential Defect in AC Voltage Sense Board, Part Numbers 80-9210842-90 and 80-9210843-90 To whom it may concern:
AMETEK Solidstate Controls is submitting the following Report of a Potential Defect in accordance with the requirements of 1 OCFR Part 21.
Please contact me if you require any further information.
Sincerely, Ethan Salsbury Quality Manager
/
COMPONENT DESCRIPTION:
277VAC Voltage Sense Board PROBLEM YOU COULD SEE:
In May of 2018, AMETEK Solidstate Controls (SCI) experienced failures during preventative maintenance with the 80-210833-90 AC Voltage Sense board during the startup of a unit. While the failures were.experienced on commercial equipment, a version of the AC Voltage Sense printed circuit board is used in safety-related equipment as well.
CAUSE:
The failure*of the AC Voltage Sense Boards is caused by the opening of the 100 OHM.
2W R7 metal oxide resistor, AMETEK SCI part number 03-804103-00, due to insufficient peak power withstand capability for the application. In all instances of failures experienced, the peak inrush power dissipati_on during startup caused the 2W metal oxide resistor to open. Failures have been limited to the metal oxide resistor.
EFFECT ON SYSTEM PERFORMANCE:
If the 100 OHM; 2W metal oxide resistor in the Rt position (PN: 03-804103-00) of the
- AC Voltage Sense board experiences peak power above its rating and opens, the AC Voltage Sense board may fail. This failure could cause a false low AC voltage alarm and an inoperable high AC voltage alarm condition. During steady state operation, the resistor will not be exposed to power dissipation significant enough to impact the.
resistor..
This potential defect and 1 OCFR21 notification applies to SCI safety-related 277VAC
. version of the AC Voltage Sense printed circuit board:.
80-9210842 PCB ASSY, VLT SENSE 277VAC,1PH ACTION RECOMMENDED:
The R7 metal oxide resistor is being replaced in the 80-9210842-90 version of the AC voltage sense printed circuit board with a wire-wound resistor (PN: 03-804103-10). The AC Voltage Sense Board will be revised to revision level "I". AMETEK recommends replacing any prior *revisions of the 277VAC AC Voltage Sense boards at the earliest convenience.
AMETEK SOLIDSTATE CONTROLS CORRECTIVE ACTION:
If you wish to replace the 277 VAC AC Voltage Sense Board with the latest revision, AMETEK Solidstate Controls will work with you to arrange replacements. Please contact Mr. Mark Shreve of our Client Services group at 1-800-222-9079 or 1-614-846-7500 ext. 6332. mark.shreve@AMETEK.com AFFECTED CUSTOMERS
- The table below identifies all AMETEK Solidstate Controls customers who have purchased the printed circuit board 80-9210842-90 since 2008. Any purchases prior to 2008 should have been replaced according to the recommended preventative maintenance schedule and, therefore are not applicable to this 1 OCFR21 notification.
- - - - - - - - - - - - - - - - - - - ~
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GEORGIA POWER COMP ANY - VOGTLE 1 &2 5 c) - L.( :i.,y fo -L{J-S SHENZHEN CHANCE NEW ENERGY SCIENTIFIC INSTRUMENT CO AMETEK JOB NUMBER B98582 46000682 B98189 B99404 46000074 BI02118 B102185 BI04565
-B77611 BI00781 B100794 B100798 B100800 B100802 BI00882 B100883 B100884 BI00885 BI00886 BI00900 BI03185 460008-61 46000861 46001055 46001657 46001764 46001869 96000093 46000426 46001139 CI03552 46001547 46001641 B96706 DATE 2009 2013 2009 2009 2011
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2010 2010 2011 2010 2010 2010 2010
--2010 2010 2010 2010 2010
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2010 2010 2010 2011 2013 2014 2014 2016 2016 2016 2016 2012 2014 2011 2015 2016 2008