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This 60-day telephone notification is bein … This 60-day telephone notification is being made under reporting requirements specified by 10CFR50.73 (a)(2)(iv)(A) to describe an invalid actuation of a containment isolation signal affecting more than one system.</br>At 1354 on February 4, 2011, with the Duane Arnold Energy Center (DAEC) operating at 100% power, an invalid Group 3 isolation on the 'B' side of the Primary Containment Isolation System occurred. Group 3 isolation signals were generated for Primary Containment Isolation Valves for Drywell and Torus Ventilation, and Purge, Containment Nitrogen Compressor Suction and Discharge, Recirculation Pump Seals, and Post Accident Sample System. </br>This event was caused by a high resistance contact on relays in the trip circuitry for the 'B' Fuel Pool Exhaust Radiation Monitor logic.</br>All equipment responded in accordance with the plant design. Specifically, all actuations were complete and successful. </br>There were no safety consequences or impacts on the health and safety of the public. The event was entered into DAEC's corrective action program for resolution.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
18:54:00, 4 February 2011 +
11:58:00, 5 April 2011 +
18:54:00, 4 February 2011 +
This 60-day telephone notification is bein … This 60-day telephone notification is being made under reporting requirements specified by 10CFR50.73 (a)(2)(iv)(A) to describe an invalid actuation of a containment isolation signal affecting more than one system.</br>At 1354 on February 4, 2011, with the Duane Arnold Energy Center (DAEC) operating at 100% power, an invalid Group 3 isolation on the 'B' side of the Primary Containment Isolation System occurred. Group 3 isolation signals were generated for Primary Containment Isolation Valves for Drywell and Torus Ventilation, and Purge, Containment Nitrogen Compressor Suction and Discharge, Recirculation Pump Seals, and Post Accident Sample System. </br>This event was caused by a high resistance contact on relays in the trip circuitry for the 'B' Fuel Pool Exhaust Radiation Monitor logic.</br>All equipment responded in accordance with the plant design. Specifically, all actuations were complete and successful. </br>There were no safety consequences or impacts on the health and safety of the public. The event was entered into DAEC's corrective action program for resolution.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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>.
100 +
00:00:00, 5 April 2011 +
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>.
02:07:31, 2 March 2018 +
11:58:00, 5 April 2011 +
true +
false +
59.753 d (1,434.07 hours, 8.536 weeks, 1.964 months) +
18:54:00, 4 February 2011 +
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.