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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 52731 | 2 May 2017 05:00:00 | 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 | 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) Fisher Controls (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 | ||
| ENS 52003 | 6 August 2014 05:00:00 | 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | Part 21 - Switches Not Enviromentally Qualified | TopWorx Information Notice: TIN 2016-01 13 June 2016 Subject: C7 Switches Equipment Affected By This Information Notice: (4) C7-14521-E25 shipped on 6 August 2014 Purpose: The purpose on this TopWorx Information Notice (TIN) is to alert Fisher that, as of 27 May 2016, TopWorx was made aware of a situation which may affect the performance of the aforementioned equipment. TopWorx is informing Fisher of this circumstance in accordance with Section 21.21 (b) and 50.55 (e) of 10 CFR 21. Applicability: This notice applies only to (4) TopWorx C7-14521-E25 shipped on 6 August 2014 to Fisher on Fisher Purchase Order 4123318082. Discussion: Fisher Purchase Order 4123318082 specified that TopWorx SV7-14521-E25 were to be provided. Although the C7 switches provided to Fisher in error are also Nuclear-qualified switches, they do not have the same qualification pedigree and therefore cannot be considered qualified for HELB (High Energy Line Break) applications (zones 5 and 10). TopWorx has no indication that the switches provided are defective, yet TopWorx is unable to determine the application or status of use and therefore submits this notice. Extent of Condition: Fisher Purchase Orders were reviewed and no other order was found where an incorrect switch was provided. Actions Required: If the units mentioned above are to be installed in a zone for which the C7 switch is not qualified, then the units must be replaced. In addition, TopWorx has initiated a Non Conformance Report (NCR 05192016-01) to prevent reoccurrence of this issue. 10 CFR 21 Implications: TopWorx requests that the recipient of this notice review it and take appropriate action in accordance with 10 CFR 21. If there are any technical questions or concerns, please contact: John Conrad Manger, Quality TopWorx 3300 Fern Valley Road Louisville, KY 40213 Fax: (502) 969-8000 Phone: (502) 873-4661 John.conrad@emerson.com | ||
| ENS 48741 | 12 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 | TopWorx discovered that switches were built and shipped using adhesive G909 that was beyond its manufacturer's recommended expiration date. Adhesion properties of the expired adhesive cannot be guaranteed against the deleterious effects of seismic events, thermal aging, and high dose radiation. The switches involved were TopWorx M8-24521-P4 shipped on 12 October 2012 and TopWorx M8-2352T-P4 shipped on 8 November 2012. Both shipments were sent to PGS Enrique Maria Hierro S.L. in Spain. If the units mentioned above are found to be installed in an environment that may expose them to the conditions of seismic events, thermal aging, and/or high dose radiation, then the units should be replaced. Per TopWorx, there were 13 switches shipped. All switches were shipped to Spain. No switches were shipped to US licensees. Technical questions or concerns should be addressed to Alex Murphy, Manager, Quality, (502) 873-4602. |