ENS 56135

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v t e ENS Event
20:08 Sep 30, 2022
Title	Safety System Inoperability
Event Description	The following information was provided by the licensee via email: At 1608 [EDT] on September 30, 2022, it was discovered that both trains of the chemical volume and control system were simultaneously inoperable due to an unisolable piping flaw inside containment detected during plant pressurization in preparation for startup following a refueling outage. St. Lucie Unit 2 was not affected and remains at 100 percent power. This event is being reported pursuant to 10CFR50.72(b)(3)(v)(D). The NRC Resident Inspector has been notified. * * RETRACTION FROM RICHARD ROGERS TO DONALD NORWOOD AT 1155 EDT ON 11/11/2022 * * * The following information was provided by the licensee via email: The purpose of this notification is to retract a previous report made on 09/30/2022 at 1713 EDT (EN 56135). Notification of the event to the NRC was initially made as a result of declaring both trains of U1 Chemical and Volume Control System inoperable due to a piping flaw detected during plant pressurization in preparation for startup following a refueling outage. Subsequent to the initial report, FPL [Florida Power and Light] has concluded that the flaw identified in line 2"-CH-109 did not exceed (with sufficient margin) the allowable axial flaw size utilizing the ASME Code Case N-869 methodology, and the Chemical and Volume Control System was operable but degraded for the period of concern. Therefore, this event is not considered a Safety System Functional Failure and is not reportable to the NRC as a Licensee Event Report (LER) per 10 CFR 50.73. The NRC Senior Resident Inspector has been notified. Notified R2DO (Miller).

ENS 56135 +/- *RETRACTED*
Where
Saint Lucie Florida (NRC Region 2)
Reporting

10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+-2.92 h-0.122 days <br />-0.0174 weeks <br />-0.004 months <br />)
Opened:	Michael Croteau 17:13 Sep 30, 2022
NRC Officer:	Mike Stafford
Last Updated:	Nov 11, 2022
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v • d • e

v t e Emergency Notification System
Saint Lucie with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2024-01-03T17:57:00 [Table view]
[ENS list for Saint Lucie]

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