ENS 57233: Difference between revisions

v t e ENS Event
19:24 Jul 18, 2024
Title	Automatic Reactor Trip
Event Description	The following information was provided by the licensee via phone and email: At 1524 [EDT] on 07/18/2024, with Unit 2 in Mode 1 at 100 percent power, the reactor automatically tripped due to a turbine trip. The trip was not complex, with all systems responding normally post-trip. Operations responded and stabilized the plant. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves. Unit 1 implemented AOP-7K (abnormal operating procedure), overcooling event, due to a grid transient. Operations responded and stabilized Unit 1 in Mode 1 at 100 percent power. Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B). There was no impact on the health and safety of the public or plant personnel. The NRC resident inspector has been notified. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: All rods fully inserted. There were no other specified system actuations.

ENS 57233 +/-
Where
Calvert Cliffs Maryland (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation
Time - Person (Reporting Time:+-0.85 h-0.0354 days <br />-0.00506 weeks <br />-0.00116 months <br />)
Opened:	Kerry Hummer 18:33 Jul 18, 2024
NRC Officer:	Jordan Wingate
Last Updated:	Jul 18, 2024
57233 - NRC Website Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 57233\u003C/a\u003E - \u003Ca href=\"/Calvert_Cliffs\" title=\"Calvert Cliffs\"\u003ECalvert Cliffs\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAutomatic Reactor Trip\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 57233 - Calvert Cliffs\n","link":"","lat":38.434263888888886,"lon":-76.44219722222222,"icon":"/w/images/b/be/Constellation_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Calvert Cliffs with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation
WEEKMONTHYEAR2024-07-18T19:24:00 [Table view]
[ENS list for Calvert Cliffs]

@@ Line 26: / Line 26: @@
 The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
 All rods fully inserted. There were no other specified system actuations.
-| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2024/20240719en.html#en57233
+| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2024/20240722en.html#en57233
 }}{{unit info
 | Unit = 2

Latest revision as of 07:20, 22 July 2024