ENS 53084
ENS Event | |
|---|---|
05:00 Nov 20, 2017 | |
| Title | Part-21 - Auxiliary Feedwater Pump Power Supply Failure |
| Event Description | The following report is an excerpt from a fax from Engine Systems, Inc.:
Engine Systems Inc. (ESI) began a 10CFR21 evaluation on October 17, 2017 upon notification of a potential issue with power supply P/N 2938604 supplied to Vogtle Nuclear Plant. The power supply is installed in a safety-related control panel for the Terry Turbine driven auxiliary feedwater pump. Analysis determined the power supply failure was due to an internal rectifier diode failure which resulted in a short circuit on the power supply output. The evaluation was concluded on November 20, 2017 and it was determined that this issue is a reportable defect as defined by 10CFR Part 21. The power supply failure will adversely affect speed control of the turbine driven auxiliary feedwater pump and therefore may prevent safe shutdown of the nuclear reactor. This issue applies to all customers that have power supply P/N 2938604 within the date code range 0648 through 0723. ESI has supplied power supplies within the suspect date code range to [Vogtle and Farley]. Point of Contact: Tom Horner, Quality Manager, 252-977-2720 |
| Where | |
|---|---|
| Engine Systems, Inc. Rockymount, North Carolina (NRC Region 1) | |
| Organization: | Engine Systems, Inc. |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+36.12 h1.505 days <br />0.215 weeks <br />0.0495 months <br />) | |
| Opened: | Tom Horner 17:07 Nov 21, 2017 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Nov 21, 2017 |
| 53084 - NRC Website | |
Engine Systems, Inc. with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 569132023-11-27T05:00:00027 November 2023 05:00:00
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