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This telephone notification is provided in … This telephone notification is provided in accordance with 10CFR50.73(a)(1), to report an invalid actuation reportable per 10CFR50.73(a)(2)(iv)(A), 'Any event or condition that resulted in manual or automatic actuation of any system in paragraph (a)(2)(iv)(B) ' General containment isolation signals affecting containment isolation valves in more than one system is identified in paragraph (a)(2)(iv)(B). Although the Containment Ventilation Isolation signal affects multiple containment isolation valves in several systems, at the time of the invalid actuation, only containment isolation valves associated with the containment area radiation monitor were open. Therefore, this notification is being conservatively made. NUREG 1022 Revision 2 identifies the information that needs to be reported as discussed below.</br>(A) The specific train(s) and system(s) that were actuated.</br>On June 6, 2009 at 2246 hours, with Unit 1 in Mode 1, a containment area radiation monitor failed high, resulting in an invalid A and B train automatic Containment Ventilation Isolation (CVI). Four containment isolation valves, associated with a containment radiation air monitor, that was in-service at the time of the actuation, closed. Additionally, valves (non-containment isolation valves) in the Auxiliary building closed in response to the actuation.</br>(B) Whether each train actuation was complete or partial.</br>The actuation was considered complete. The CVI signal automatically isolated all valves that were open at the time of the actuation.</br>(c) Whether or not the system started and functioned successfully.</br>The Containment Ventilation Isolation signal automatically actuated and functioned successfully. The CVI signal was not in response to actual plant conditions and is therefore considered invalid. </br>In reviewing this CVI actuation it was also discovered that on July 6, 2007 a similar CVI had occurred on Unit 1 when a circuit board associated with the containment vent radiation monitor failed. The failure resulted in an actuation of CVI train A and Train B. The actuation was considered complete since all valves that were open at the time of the actuation isolated as required. The CVI was not in response to actual plant conditions and was therefore considered invalid.</br>The licensee will notify the NRC Resident Inspector.ee will notify the NRC Resident Inspector.
02:46:00, 7 June 2009 +
45,173 +
20:45:00, 29 June 2009 +
02:46:00, 7 June 2009 +
This telephone notification is provided in … This telephone notification is provided in accordance with 10CFR50.73(a)(1), to report an invalid actuation reportable per 10CFR50.73(a)(2)(iv)(A), 'Any event or condition that resulted in manual or automatic actuation of any system in paragraph (a)(2)(iv)(B) ' General containment isolation signals affecting containment isolation valves in more than one system is identified in paragraph (a)(2)(iv)(B). Although the Containment Ventilation Isolation signal affects multiple containment isolation valves in several systems, at the time of the invalid actuation, only containment isolation valves associated with the containment area radiation monitor were open. Therefore, this notification is being conservatively made. NUREG 1022 Revision 2 identifies the information that needs to be reported as discussed below.</br>(A) The specific train(s) and system(s) that were actuated.</br>On June 6, 2009 at 2246 hours, with Unit 1 in Mode 1, a containment area radiation monitor failed high, resulting in an invalid A and B train automatic Containment Ventilation Isolation (CVI). Four containment isolation valves, associated with a containment radiation air monitor, that was in-service at the time of the actuation, closed. Additionally, valves (non-containment isolation valves) in the Auxiliary building closed in response to the actuation.</br>(B) Whether each train actuation was complete or partial.</br>The actuation was considered complete. The CVI signal automatically isolated all valves that were open at the time of the actuation.</br>(c) Whether or not the system started and functioned successfully.</br>The Containment Ventilation Isolation signal automatically actuated and functioned successfully. The CVI signal was not in response to actual plant conditions and is therefore considered invalid. </br>In reviewing this CVI actuation it was also discovered that on July 6, 2007 a similar CVI had occurred on Unit 1 when a circuit board associated with the containment vent radiation monitor failed. The failure resulted in an actuation of CVI train A and Train B. The actuation was considered complete since all valves that were open at the time of the actuation isolated as required. The CVI was not in response to actual plant conditions and was therefore considered invalid.</br>The licensee will notify the NRC Resident Inspector.ee will notify 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>.
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00:00:00, 29 June 2009 +
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>.
22:32:11, 24 September 2017 +
20:45:00, 29 June 2009 +
true +
false +
22.749 d (545.98 hours, 3.25 weeks, 0.748 months) +
02:46:00, 7 June 2009 +
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.