ENS Event | |
|---|---|
06:00 Dec 22, 2023 | |
| Title | Part 21 - Air Start Valve (Bent Bottom Stem) |
| Event Description | The following is a summary of the information provided by Fairbanks Morse Engine via email:
Prairie Island Nuclear Generating Plant (PINGP) was conducting a planned replacement of emergency diesel generator air start solenoid valves when it discovered that the bottom stem appeared to be bent and observed air leakage. PINGP returned five valves to Fairbanks Morse, and they returned them to the manufacturer, ASCO. ASCO reassembled one valve and confirmed there was air leakage through the valve. The leakage path was from the air supply port to the exhaust port when the valve was in the de-energized normally open state. ASCO functionally tested the remaining four valves and found a second valve that also leaked. ASCO and Fairbanks Morse have implemented corrective actions to address this issue. Fairbanks Morse will notify PINGP and Limerick Generating Station. Affected plants with potentially defected parts: Prairie Island Nuclear Generating Plant and Limerick Generating Station. Point of Contact: Martin Kurr Quality Assurance Manager Fairbanks Morse 608-364-8247 Martin.Kurr@fmdefense.com Fairbanks Morse Notification Report Number: 23-01 |
| Where | |
|---|---|
| Fairbanks Morse Engine Beloit, Wisconsin (NRC Region 3) | |
| Organization: | Fairbanks Morse Engine |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+1574.78 h65.616 days <br />9.374 weeks <br />2.157 months <br />) | |
| Opened: | Martin Kurr 20:47 Feb 25, 2024 |
| NRC Officer: | Kerby Scales |
| Last Updated: | Feb 25, 2024 |
| 56992 - NRC Website | |
Fairbanks Morse Engine with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 569932023-12-23T06:00:00023 December 2023 06:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - MINI-GEN Signal Generator Defect ENS 569922023-12-22T06:00:00022 December 2023 06:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - Air Start Valve (Bent Bottom Stem) ENS 562002022-10-27T05:00:00027 October 2022 05:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 Report - Fairbanks Morse Engine Emerency Diesel Generator Electronic Speed Control Module 2023-12-23T06:00:00 | |