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This is an eight-hour non-emergency notifi … This is an eight-hour non-emergency notification to the NRCOC for a condition that could have prevented the fulfillment of safety function of a system required to mitigate the consequences of an accident in accordance with 10 CFR 50.72(b)(3)(v)(D).</br>Unit 4 High Head Safety Injection (SI) system was at reduced capability from approximately 0951(hrs. EDT) to 1027 (hrs.). This was due to an open flowpath from the High Head Safely Injection Pump discharge to the Unit 3 Reactor Coolant System (RCS) and refueling cavity. This flow path was established during the execution of an Equipment Clearance Order for Unit 3 SI system when SI valves MOV-3-843A and MOV-3-843B were opened prior to closing SI lsolation Valve 3-867. This condition could have impacted the ability of the SI pumps to provide required flow to the RCS cold legs should the SI system have been required based on Engineering judgment. This condition was discovered at approximately 1005 (hrs.). </br>Unit 3 is in Mode 6 for a planned refueling outage. Unit 4 is in Mode 1 at 100%</br>Unit 3 and Unit 4 share a common High Head SI System discharge header. Unit 4 entered T.S. 3.0.3 from 0951(hrs.) to 1027 (hrs.) when SI Isolation Valve 3-867 was closed. The licensee has notified NRC Resident Inspector.ensee has notified NRC Resident Inspector. +
13:51:00, 1 October 2010 +
46,303 +
17:56:00, 1 October 2010 +
13:51:00, 1 October 2010 +
This is an eight-hour non-emergency notifi … This is an eight-hour non-emergency notification to the NRCOC for a condition that could have prevented the fulfillment of safety function of a system required to mitigate the consequences of an accident in accordance with 10 CFR 50.72(b)(3)(v)(D).</br>Unit 4 High Head Safety Injection (SI) system was at reduced capability from approximately 0951(hrs. EDT) to 1027 (hrs.). This was due to an open flowpath from the High Head Safely Injection Pump discharge to the Unit 3 Reactor Coolant System (RCS) and refueling cavity. This flow path was established during the execution of an Equipment Clearance Order for Unit 3 SI system when SI valves MOV-3-843A and MOV-3-843B were opened prior to closing SI lsolation Valve 3-867. This condition could have impacted the ability of the SI pumps to provide required flow to the RCS cold legs should the SI system have been required based on Engineering judgment. This condition was discovered at approximately 1005 (hrs.). </br>Unit 3 is in Mode 6 for a planned refueling outage. Unit 4 is in Mode 1 at 100%</br>Unit 3 and Unit 4 share a common High Head SI System discharge header. Unit 4 entered T.S. 3.0.3 from 0951(hrs.) to 1027 (hrs.) when SI Isolation Valve 3-867 was closed. The licensee has notified NRC Resident Inspector.ensee has notified 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, 1 October 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>.
22:29:25, 24 September 2017 +
17:56:00, 1 October 2010 +
true +
false +
0.17 d (4.08 hours, 0.0243 weeks, 0.00559 months) +
13:51:00, 1 October 2010 +
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.