ENS 54340
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ENS Event | |
|---|---|
04:50 Oct 21, 2019 | |
| Title | Unusual Event Declared Due to No Control Rod Movement with Manual Scram Actuation |
| Event Description | While Unit 3 was shutting down for 3R22 refueling outage, the mode switch was taken to shutdown position which is a manual scram signal. The manual scram signal was not received from the mode switch. A subsequent manual scram was inserted with the use of the manual scram push buttons. The Unit 3 reactor is shutdown with all rods inserted.
Unit 2 was unaffected by the event and remains in Mode 1 at 100 percent power. The licensee notified the NRC Resident Inspector, Pennsylvania and Maryland State Agencies, local government. A media press release is planned. Notified DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email), FEMA Region 3 Watch Office (email).
Conditions no longer meet an Emergency Actuation Level and will not deteriorate. Unit 3 reactor is shutdown with all control rods fully inserted. The NOUE was terminated at 0230 EDT." The licensee notified the NRC Resident Inspector, Pennsylvania and Maryland State Agencies, local government. Notified the R1DO (Jackson), NRR EO (Miller), IRDMOC (Gott), R1RA (Lew via email), NRR (Nieh via email), DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email), FEMA Region 3 Watch Office (email). |
| Where | |
|---|---|
Peach Bottom  Pennsylvania (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.45 h-0.144 days <br />-0.0205 weeks <br />-0.00473 months <br />) | |
| Opened: | Kevin Gromann 01:23 Oct 21, 2019 |
| NRC Officer: | Kerby Scales |
| Last Updated: | Oct 21, 2019 |
| 54340 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | M |
| Before | Power Operation (5 %) |
| After | Startup (0 %) |
WEEKMONTHYEARENS 552612021-05-17T16:38:00017 May 2021 16:38:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Due to a Fire Alarm Inside the Drywell ENS 543402019-10-21T04:50:00021 October 2019 04:50:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to No Control Rod Movement with Manual Scram Actuation ENS 471832011-08-23T18:01:00023 August 2011 18:01:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event Due to Seismic Event ENS 435562007-08-08T19:25:0008 August 2007 19:25:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared to Due Potential Hazardous Atmosphere in a Emergency Diesel Generator Room ENS 431892007-02-27T14:41:00027 February 2007 14:41:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Fire Inside the Unit 3 Turbine Area Load Center ENS 428872006-10-07T22:02:0007 October 2006 22:02:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event - Loss of Containment Integrity ENS 427792006-08-15T22:14:00015 August 2006 22:14:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Due to Fire on Roof of Edg Building ENS 401582003-09-15T06:39:00015 September 2003 06:39:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Dual Unit Reactor Scram. Discretionay Unusual Event Declared 2021-05-17T16:38:00 | |
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