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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 56420 | 17 March 2023 22:07:00 | 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | Part 21 - Inconsistent Crimping of Motor Leads | The following is a synopsis of information provided by Trillium Valves USA via fax and email: Trillium Valves USA has identified defects in butterfly valves with Limitorque SMB motor actuators supplied to Westinghouse Electric Company from 2010 to 2016. The defect identified is inconsistent crimping of motor leads which caused lack of continuity and either intermittent function or nonfunction of the actuator motor preventing the butterfly valve to close on demand. The defect was identified on July 1, 2022. Westinghouse was notified of the affected orders on March 6, 2023. Trillium Valves USA recommends the inspection of these actuators for lack of continuity at the motor leads which may be impacted by inconsistent crimping of the lead wire to the ring tongue terminal. Trillium Valve USA's Approved Suppliers List has been updated to add a restriction that any repairs or service of safety related equipment must be completed at Limitorque's facility. No service or repair of safety related Limitorque equipment should be performed at Trillium sites. This action was completed on March 2, 2023. The failure to comply with initial notification and written notification has been initiated under Trillium Valves USA corrective action program. Corrective actions will include additional training on the implementation and reporting requirements under 10 CFR 21. This action will be completed by March 31, 2023. U.S. plants affected: Vogtle Unit 3 Vogtle Unit 4 Summer Unit 2 Summer Unit 3 Additional overseas plants affected: Sanmen Unit 1 Haiyang Unit 1 |