ENS Event | |
|---|---|
04:00 Jun 7, 2024 | |
| Title | Part 21 Report - Check Valve Fails Bench Test |
| Event Description | The following is a synopsis of information received via email:
Flowserve Corporation identified a defect with their 0.5 inch model 1878 piston check valve during bench testing. The piston check valve with adjustable cracking pressure received by Duke Energy Catawba Nuclear Station failed bench test performance for designed cracking pressure with an allowable range of 180 - 220 psig. The valve is used to provide overpressure protection of containment penetration piping due to thermal expansion of fluid trapped between the containment isolation valves when the valves are closed. The valves are required to crack open before the maximum 220 psig setpoint to perform this function. Corrective actions include revising Flowserves assembly and test procedures for the 0.5 inch model 1878 piston check valve. Affected known plant: Catawba Nuclear Station The name and address of the individual reporting this information is: Aaron G. Goodbar Nuclear Quality Assurance Manager Flowserve Corporation 1900 S. Saunders St. Raleigh, NC 27603 1-888-200-5389 |
| Where | |
|---|---|
| Flowserve Raleigh, North Carolina (NRC Region 2) | |
| Organization: | Flowserve |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+14.5 h0.604 days <br />0.0863 weeks <br />0.0199 months <br />) | |
| Opened: | Aaron G. Goodbar 18:30 Jun 7, 2024 |
| NRC Officer: | Natalie Starfish |
| Last Updated: | Jun 10, 2024 |
| 57167 - NRC Website
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Flowserve with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 571672024-06-07T04:00:0007 June 2024 04:00:00
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