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The following information was provided by The following information was provided by the licensee via email:</br>The following event description is based on information currently available. If through subsequent reviews of this event additional information is identified that is pertinent to this event or alters the information being provided at this time a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73.</br>At 1306 (MST) on March 19, 2022, the Technical Support Center (TSC) lost normal and alternate electrical power, resulting in the inability to perform emergency assessments at the TSC. At the time of the event, the normal power source to the TSC (offsite power) was under a clearance for maintenance activities and the alternate power source (backup generator) was running to provide electrical power to the TSC. At 1306, the alternate power source to the TSC was lost when the backup generator tripped. Power was restored to the TSC via the normal power source at 1723. The cause of the TSC backup generator trip is unknown at this time.</br>All three units are stable and in Mode 1.</br>No emergency classification was required per the Emergency Plan.</br>The NRC Senior Resident Inspector has been informed.nior Resident Inspector has been informed.  +
20:06:00, 19 March 2022  +
55,796  +
23:43:00, 19 March 2022  +
20:06:00, 19 March 2022  +
The following information was provided by The following information was provided by the licensee via email:</br>The following event description is based on information currently available. If through subsequent reviews of this event additional information is identified that is pertinent to this event or alters the information being provided at this time a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73.</br>At 1306 (MST) on March 19, 2022, the Technical Support Center (TSC) lost normal and alternate electrical power, resulting in the inability to perform emergency assessments at the TSC. At the time of the event, the normal power source to the TSC (offsite power) was under a clearance for maintenance activities and the alternate power source (backup generator) was running to provide electrical power to the TSC. At 1306, the alternate power source to the TSC was lost when the backup generator tripped. Power was restored to the TSC via the normal power source at 1723. The cause of the TSC backup generator trip is unknown at this time.</br>All three units are stable and in Mode 1.</br>No emergency classification was required per the Emergency Plan.</br>The NRC Senior Resident Inspector has been informed.nior Resident Inspector has been informed.  +
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, 20 March 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>.
11:30:15, 22 March 2022  +
23:43:00, 19 March 2022  +
false  +
0.151 d (3.62 hours, 0.0215 weeks, 0.00496 months)  +
20:06:00, 19 March 2022  +
Loss of Technical Support Center (TSC)  +
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.
1  +