ENS 52731
ENS Event | |
|---|---|
05:00 May 2, 2017 | |
| Title | Part 21 - C8, M8 and H8 Switches Exhibited Continuity from Internal Circuitry to Case Ground During Inspection and Test |
| Event Description | The following report was received via email:
TopWorx Information Notice: TIN 2017-01 04 May 2017 Subject: C8, M8 and H8 Switches From: James McDill Director of Operations TopWorx 3300 Fern Valley Road Louisville, KY 40213 Fax: (502) 969-7315 Equipment Affected by this Information Notice: C8, M8 & H8 Series Products released prior to April 01, 2017. Purpose: The purpose on this TopWorx Information Notice (TIN) is to alert that as of 02 May 2017 TopWorx was made aware of a situation which may affect the performance of the equipment listed above. TopWorx is informing its customers of this circumstance in accordance with Section 21.21 (b) and 50.55 (e) of 10CFR21. Applicability: This notice applies only to the C8, M8, and H8 series of switches. Discussion: A potential nonconformance was discovered during product review when X-Ray analysis revealed a small piece of loose solder inside a completed C8 switch. Investigations revealed that the cause of this defect was the amount of solder used to hermetically seal the switch and enclosure together. Under the right conditions and circumstances, excessive solder on this specific switch model could potentially bridge between a circuit connection and the internal surface of the switch enclosure causing a high potential (Hipot) failure. Extent of Condition: No other series of switches are affected by this information notice. Actions Required: The recommended corrective action for installed switches is to continue monitoring for ground fault indications. If you do not currently monitor for ground fault indications, then a resistance check using an ohmmeter from each contact to the case to ensure no continuity to ground exists. Any switches exhibiting continuity to ground should be returned to TopWorx for replacement. 10CFR21 Implications: TopWorx requests that the recipient of this notice review it and take appropriate action in accordance with 10CFR21. Customer notifications [Quantity purchased and Customer Purchase Order numbers]: Nuclear Logistics Inc. [Qty 2 - PO #NLI57759, Qty 1 - PO #NLI-50192 REPL] Control Southern Inc. [Qty 10 - PO #X230280199, Qty 24 - PO #X230303436, Qty 1 - PO #X230315950, Qty 14 - PO #X230336922] Ralph A. Hiller Co. [Qty 10 - PO #NUC9868] Weir Valves & Controls USA Inc. [Qty 1 - PO #2022132/0, Qty 1 - PO #202321/0] Emerson Process Mgmt (Bettis) [Qty 4 - PO #4125106730, Qty 8 - PO #4125084349] [Qty 4 - PO #G133492, Qty 4 - PO #4123340399, Qty 0 - PO #G132951 (ordered but not shipped), Qty 18 - PO #G132951, Qty 1 - PO #G133421] If there are any technical questions or concerns, please contact: Mark Brozak Manger, Quality TopWorx 3300 Fern Valley Road Louisville, KY 40213 Fax: (502) 969-8000 Phone: (502) 873-4689 Mark.Brozak@emerson.com |
| Where | |
|---|---|
| Topworx Louisville, Kentucky (NRC Region 1) | |
| Organization: | Emerson Process Management |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+56.23 h2.343 days <br />0.335 weeks <br />0.077 months <br />) | |
| Opened: | Mark Brozak 13:14 May 4, 2017 |
| NRC Officer: | Steve Sandin |
| Last Updated: | May 4, 2017 |
| 52731 - NRC Website | |
Topworx with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 527312017-05-02T05:00:0002 May 2017 05:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - C8, M8 and H8 Switches Exhibited Continuity from Internal Circuitry to Case Ground During Inspection and Test ENS 520032014-08-06T05:00:0006 August 2014 05:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - Switches Not Enviromentally Qualified ENS 487412012-10-12T06:00:00012 October 2012 06:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 Report - Switches Built with Adhesive Beyond Its Expiration Date 2017-05-02T05:00:00 | |