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On March 14, 2012, it was determined that … On March 14, 2012, it was determined that in the event of an Appendix R fire, fire damage to cables in Fire Area 2-4, 3-3, or 25-1 could cause a Residual Heat Removal Service Water System (RHRSW) pump to spuriously start. This unanalyzed condition was originally determined to be not reportable. However, during subsequent review on March 28, 2012, this condition was determined to be reportable since the additional load from the spurious start of the RHRSW pump on the associated Emergency Diesel Generator (EDG) could result in the design maximum loading of the EDG being exceeded. As a result of the EDG maximum loading being exceeded, the EDG credited in the Appendix R fire analysis to supply required Appendix R safe shutdown loads could fail. The issue has significant safety impact since the capability to supply power to the Appendix R safe shutdown equipment for the credited EDG is necessary to provide adequate core cooling and decay heat removal during performance of the Browns Ferry Nuclear Plant Safe Shutdown Instructions in an Appendix R fire event.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
21:15:00, 28 March 2012 +
47,784 +
22:44:00, 28 March 2012 +
21:15:00, 28 March 2012 +
On March 14, 2012, it was determined that … On March 14, 2012, it was determined that in the event of an Appendix R fire, fire damage to cables in Fire Area 2-4, 3-3, or 25-1 could cause a Residual Heat Removal Service Water System (RHRSW) pump to spuriously start. This unanalyzed condition was originally determined to be not reportable. However, during subsequent review on March 28, 2012, this condition was determined to be reportable since the additional load from the spurious start of the RHRSW pump on the associated Emergency Diesel Generator (EDG) could result in the design maximum loading of the EDG being exceeded. As a result of the EDG maximum loading being exceeded, the EDG credited in the Appendix R fire analysis to supply required Appendix R safe shutdown loads could fail. The issue has significant safety impact since the capability to supply power to the Appendix R safe shutdown equipment for the credited EDG is necessary to provide adequate core cooling and decay heat removal during performance of the Browns Ferry Nuclear Plant Safe Shutdown Instructions in an Appendix R fire event.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
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00:00:00, 28 March 2012 +
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>.
22:25:39, 24 September 2017 +
22:44:00, 28 March 2012 +
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0.0617 d (1.48 hours, 0.00881 weeks, 0.00203 months) +
21:15:00, 28 March 2012 +
Unanalyzed Condition Discovered During Nfpa 805 Transition Impacting Emergency Diesel Generator Loading +
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.