NRC logs Browns Ferry Unit 3 reactor protection system actuation in April 7 event report

The Nuclear Regulatory Commission’s April 7 event report includes a Browns Ferry Unit 3 reactor protection system actuation, but the agency said the issue was repaired and had no reported impact on public health or safety.

According to the NRC entry, the 3A reactor protection system motor-generator set tripped on February 3, causing a half-scram on channel A and invalid primary containment isolation actuations in several groups. The licensee reported that the faulty connection was repaired and the system was restored.

The report is an operations notice rather than an emergency alert. The NRC page also shows the Browns Ferry entry was reviewed and updated on April 7 at 4:47 a.m. EDT.

Browns Ferry is a TVA nuclear station in Alabama. The NRC report does not say the event affected the public, and it did not describe any offsite consequence.

The same NRC event page also contains a separate Nebraska radiography source-disconnect report, but that is a different incident and not part of the Browns Ferry entry.

The update is a routine public record item, not a new reactor accident.