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This 60 day telephone notification is bein … This 60 day telephone notification is being made in-lieu of a written report under the requirements specified by 10 CFR 50.73(a)(2)(iv) and 10 CFR 50.73(a)(1) to describe an invalid actuation of general containment isolation signals affecting more than one system.</br>On May 12, 2010, at 1232 hours Central Daylight Time (CDT), with Unit 3 operating at 100 percent thermal power the electrical power to the 3A RPS was interrupted during the transfer of the 3A 480V shutdown board from its alternate supply to its normal power supply. During the transfer, the normal breaker did not close for several seconds. This resulted in the interruption of power to the 3A shutdown board which caused the 3A RPS to de-energize, resulting in a half scram and the actuation of PCIS logic Groups 2, 3, 6, and 8, and the initiation of Trains B and C of Standby Gas Treatment, and the initiation of Train A Control Room Emergency Ventilation.</br>Plant conditions which require PCIS actuations and the associated system initiations (e.g., low reactor water level, high drywell pressure, abnormal area radiation level, or high area temperature) did not exist; therefore, the actuation was invalid.</br>The affected equipment responded as designed. On May 12, 2010, by approximately 1342 hours CDT, Unit 3 operations personnel restored the 3A RPS power and realigned affected equipment as appropriate.</br>There were no safety consequences or impact on the health and safety of the public as a result of this event. The event was entered into the corrective actions program as PER 229613.</br>The NRC Senior Resident Inspector has been notified.nior Resident Inspector has been notified. +
17:32:00, 2 July 2010 +
46,066 +
14:23:00, 2 July 2010 +
17:32:00, 2 July 2010 +
This 60 day telephone notification is bein … This 60 day telephone notification is being made in-lieu of a written report under the requirements specified by 10 CFR 50.73(a)(2)(iv) and 10 CFR 50.73(a)(1) to describe an invalid actuation of general containment isolation signals affecting more than one system.</br>On May 12, 2010, at 1232 hours Central Daylight Time (CDT), with Unit 3 operating at 100 percent thermal power the electrical power to the 3A RPS was interrupted during the transfer of the 3A 480V shutdown board from its alternate supply to its normal power supply. During the transfer, the normal breaker did not close for several seconds. This resulted in the interruption of power to the 3A shutdown board which caused the 3A RPS to de-energize, resulting in a half scram and the actuation of PCIS logic Groups 2, 3, 6, and 8, and the initiation of Trains B and C of Standby Gas Treatment, and the initiation of Train A Control Room Emergency Ventilation.</br>Plant conditions which require PCIS actuations and the associated system initiations (e.g., low reactor water level, high drywell pressure, abnormal area radiation level, or high area temperature) did not exist; therefore, the actuation was invalid.</br>The affected equipment responded as designed. On May 12, 2010, by approximately 1342 hours CDT, Unit 3 operations personnel restored the 3A RPS power and realigned affected equipment as appropriate.</br>There were no safety consequences or impact on the health and safety of the public as a result of this event. The event was entered into the corrective actions program as PER 229613.</br>The NRC Senior Resident Inspector has been notified.nior Resident Inspector has been notified. +
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, 2 July 2010 +
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>.
02:09:17, 2 March 2018 +
14:23:00, 2 July 2010 +
true +
false +
-0.131 d (-3.15 hours, -0.0187 weeks, -0.00431 months) +
17:32:00, 2 July 2010 +
Invalid Primary Containment Isolation System Actuation from a Loss of Power to the Reactor Protection System (Rps) 3A +
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.