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On 3/1/21 at 1112 EST, with Unit 3 in ModeOn 3/1/21 at 1112 EST, with Unit 3 in Mode 1 at approximately 100 percent Rated Thermal Power (RTP), the reactor automatically tripped.</br>Auxiliary Feedwater initiated as designed to provide Steam Generator (S/G) water level control. Emergency Operating Procedures (EOPs) have been exited and General Operating Procedures (GOPs) were entered. Unit 3 is stable in Mode 3 at normal operating temperature and pressure.</br>This event is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A).</br>The NRC Resident Inspector has been notified.</br>All rods are inserted, decay heat is being removed via S/G through normal secondary systems. The plant is in a normal electrical line-up. The cause of the automatic reactor trip is (unknown at this time and is) being investigated.</br>There was no effect on Unit 4.vestigated. There was no effect on Unit 4.  +
16:12:00, 1 March 2021  +
14:07:00, 1 March 2021  +
16:12:00, 1 March 2021  +
On 3/1/21 at 1112 EST, with Unit 3 in ModeOn 3/1/21 at 1112 EST, with Unit 3 in Mode 1 at approximately 100 percent Rated Thermal Power (RTP), the reactor automatically tripped.</br>Auxiliary Feedwater initiated as designed to provide Steam Generator (S/G) water level control. Emergency Operating Procedures (EOPs) have been exited and General Operating Procedures (GOPs) were entered. Unit 3 is stable in Mode 3 at normal operating temperature and pressure.</br>This event is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A).</br>The NRC Resident Inspector has been notified.</br>All rods are inserted, decay heat is being removed via S/G through normal secondary systems. The plant is in a normal electrical line-up. The cause of the automatic reactor trip is (unknown at this time and is) being investigated.</br>There was no effect on Unit 4.vestigated. There was no effect on Unit 4.  +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 1 March 2021  +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
12:30:20, 2 March 2021  +
14:07:00, 1 March 2021  +
-0.0867 d (-2.08 hours, -0.0124 weeks, -0.00285 months)  +
16:12:00, 1 March 2021  +
Automatic Reactor Trip Due to Reactor Protection System Actuation  +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.
3  +