ENS Event | |
|---|---|
05:00 Apr 23, 2009 | |
| Title | Faulty Logic Board for Cyberex 20 Kva Inverter Model Ac |
| Event Description | The following is a summary of information received via fax:
On or around April 23rd, 2009, PSEG Nuclear LLC at Hope Creek Nuclear Station notified United Controls International (UCI), that they had encountered a problem with a Logic Power Supply circuit board (p/n: 90-41-974313) after installing it in their safety related inverter. This circuit board was a Logic Power Supply printed circuit board used in a Cyberex 20 KVA Inverter model AC. Upon inspection, PSEG determined that a jumper was missing from the circuit board by comparison to the originally removed board. The cause of this issue was due to an incorrect bill of materials (BOM) for the circuit board at the manufacturing location. The affected facility is the Hope Creek Nuclear Power Station. Nine boards were all shipped to PSEG at Hope Creek Nuclear Power Station. Preventive Actions Taken: The manufacturer, Thomas & Betts, has corrected the Bill of Materials (BOM) to show the jumper installed on this circuit board. Additionally, UCI has enhanced its inspection schedule for these boards by performing a component level inspection of each board against the BOM. Corrective Actions Taken: Of the nine potentially affected circuit boards - Two circuit boards have been returned to UCI by PSEG and have had the jumpers added and retested. These two were returned to PSEG. Three circuit boards have been verified to have the jumper correctly installed. Corrective Actions to be taken: There are four suspect circuit boards that have been shipped to PSEG (Hope Creek Nuclear Station) that need to be inspected for the correct jumper. If found to be missing the jumper, then these boards need to be returned to UCI for jumper installation and retesting. |
| Where | |
|---|---|
| Thomas & Betts Tucker, Georgia (NRC Region 1) | |
| Organization: | United Controls International |
| Reporting | |
| 10 CFR 21.21 | |
| Time - Person (Reporting Time:+7378.7 h307.446 days <br />43.921 weeks <br />10.107 months <br />) | |
| Opened: | Robert Hale 16:42 Feb 24, 2010 |
| NRC Officer: | Joe O'Hara |
| Last Updated: | Feb 24, 2010 |
| 45723 - NRC Website | |
Thomas & Betts with 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation | |
WEEKMONTHYEARENS 458392010-03-09T04:00:0009 March 2010 04:00:00
[Table view]10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation Faulty Modulation Index Control Circuit Board Used in a Power Supply ENS 457232009-04-23T05:00:00023 April 2009 05:00:00 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation Faulty Logic Board for Cyberex 20 Kva Inverter Model Ac 2010-03-09T04:00:00 | |