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At 1550 EDT on 4/13/2020, with Millstone P … At 1550 EDT on 4/13/2020, with Millstone Power Station Unit 3 operating at approximately 82 percent reactor power, an automatic reactor trip occurred following a turbine trip due to low condenser vacuum caused by the trip of multiple circulating water pumps. Due to the loss of the circulating water pumps, decay heat removal was established by the steam generator atmospheric dump valves. All other systems responded as expected to the trip.</br>Auxiliary feedwater actuated automatically as expected following the trip due to low-low levels in the steam generators.</br>There was no risk to the public. There was no impact to Millstone Unit 2.</br>The Senior Resident Inspector has been informed.</br>This event is being reported as a four hour report under 10 CFR 50.72(b)(2)(iv)(B) as a condition that resulted in actuation of the reactor protection system while the reactor was critical, and as an eight hour report under 10 CFR 50.72(b)(3)(iv)(A) and 10 CFR 50.72(b)(3)(iv)(B) for actuation of the auxiliary feedwater system.</br>The licensee also notified the state of Connecticut, the Connecticut Department of Energy and Environmental Protection, and the city of Waterford.tal Protection, and the city of Waterford. +
19:50:00, 13 April 2020 +
54,663 +
19:33:00, 13 April 2020 +
19:50:00, 13 April 2020 +
At 1550 EDT on 4/13/2020, with Millstone P … At 1550 EDT on 4/13/2020, with Millstone Power Station Unit 3 operating at approximately 82 percent reactor power, an automatic reactor trip occurred following a turbine trip due to low condenser vacuum caused by the trip of multiple circulating water pumps. Due to the loss of the circulating water pumps, decay heat removal was established by the steam generator atmospheric dump valves. All other systems responded as expected to the trip.</br>Auxiliary feedwater actuated automatically as expected following the trip due to low-low levels in the steam generators.</br>There was no risk to the public. There was no impact to Millstone Unit 2.</br>The Senior Resident Inspector has been informed.</br>This event is being reported as a four hour report under 10 CFR 50.72(b)(2)(iv)(B) as a condition that resulted in actuation of the reactor protection system while the reactor was critical, and as an eight hour report under 10 CFR 50.72(b)(3)(iv)(A) and 10 CFR 50.72(b)(3)(iv)(B) for actuation of the auxiliary feedwater system.</br>The licensee also notified the state of Connecticut, the Connecticut Department of Energy and Environmental Protection, and the city of Waterford.tal Protection, and the city of Waterford. +
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00:00:00, 13 April 2020 +
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>.
16:43:38, 15 January 2021 +
19:33:00, 13 April 2020 +
-0.0117 d (-0.28 hours, -0.00167 weeks, -3.83544e-4 months) +
19:50:00, 13 April 2020 +
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