ENS Event | |
|---|---|
05:00 Oct 1, 2018 | |
| Title | Invalid Specified System Actuation |
| Event Description | This 60-day telephone notification is being made under reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) to describe an invalid actuation of the Reactor Protection System (RPS).
At 0147 [EST] on October 1, 2018, Seabrook Unit 1 was in Mode 3 shutdown, when an invalid Reactor Protection System actuation occurred due to a high Source Range detector. All equipment responded in accordance with the plant design. Specifically, all actuations were complete and successful. There were no safety consequences or impacts on the health and safety of the public. The event was entered into Seabrook's corrective action program for resolution. The NRC Resident Inspector has been notified. The Source Range detector which gave the invalid input has been replaced. |
| Where | |
|---|---|
Seabrook  New Hampshire (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+1422.93 h59.289 days <br />8.47 weeks <br />1.949 months <br />) | |
| Opened: | Josh Greene 12:56 Nov 29, 2018 |
| NRC Officer: | Andrew Waugh |
| Last Updated: | Nov 29, 2018 |
| 53760 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Standby (0 %) |
| After | Hot Standby (0 %) |
WEEKMONTHYEARENS 537602018-10-01T05:00:0001 October 2018 05:00:00
[Table view]10 CFR 50.73(a)(1), Submit an LER Invalid Specified System Actuation 2018-10-01T05:00:00 | |