Browse wiki

Jump to navigation Jump to search
The following information was provided by The following information was provided by the licensee via fax or email:</br>On April 23, 2022, at 0224 (EDT) hours, with Unit 2 in Mode 1 at 100 percent power, two control rods dropped during control rod testing resulting in misalignment, which required a manual reactor trip in accordance with plant procedure. All safety systems functioned as expected. The Auxiliary Feedwater system actuated as designed to provide makeup flow to the steam generators. Operations responded and stabilized the plant. Decay heat is being removed by the steam generator power operated relief valves. 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). The automatic start of the Auxiliary Feedwater system is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(iv)(A). The cause of the dropped rods is being investigated. Unit 1 is not affected.</br>There was no impact on the health and safety of the public or plant personnel. </br>The NRC Resident Inspector has been notified." </br>The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:</br>Electrical power is in normal off-site arrangement. All emergency electrical supplies are available.ergency electrical supplies are available.  +
06:24:00, 23 April 2022  +
06:04:00, 23 April 2022  +
06:24:00, 23 April 2022  +
The following information was provided by The following information was provided by the licensee via fax or email:</br>On April 23, 2022, at 0224 (EDT) hours, with Unit 2 in Mode 1 at 100 percent power, two control rods dropped during control rod testing resulting in misalignment, which required a manual reactor trip in accordance with plant procedure. All safety systems functioned as expected. The Auxiliary Feedwater system actuated as designed to provide makeup flow to the steam generators. Operations responded and stabilized the plant. Decay heat is being removed by the steam generator power operated relief valves. 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). The automatic start of the Auxiliary Feedwater system is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(iv)(A). The cause of the dropped rods is being investigated. Unit 1 is not affected.</br>There was no impact on the health and safety of the public or plant personnel. </br>The NRC Resident Inspector has been notified." </br>The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:</br>Electrical power is in normal off-site arrangement. All emergency electrical supplies are available.ergency electrical supplies are available.  +
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, 23 April 2022  +
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>.
20:02:20, 4 January 2024  +
06:04:00, 23 April 2022  +
-0.0138 d (-0.33 hours, -0.00196 weeks, -4.52034e-4 months)  +
06:24:00, 23 April 2022  +
Manual Reactor Trip During Control Rod Testing  +
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.
2  +