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During an NRC Triennial Fire Protection Au … During an NRC Triennial Fire Protection Audit the Inspector identified a fuse coordination issue between 130VDC supply circuit and breaker trip circuit fuses for the Standby Feedwater (SBFW) Pump switchgear. The coordination ratio was found to be too low to support requirements for fire related safe shutdown equipment under Generic Letter 81-12. Impacted equipment is SBFW Pumps A & B and control circuits required for Appendix R Alternative Shutdown auxiliary equipment. This event is being reported as an unanalyzed condition that significantly degraded plant safety under 10CFR50.72(b)(3)(ii)(B).</br>The impacted equipment has been declared inoperable and a team is currently working on design changes to change fuse sizes for the breaker trip circuit/supply circuit to meet the requirements of Generic Letter 81-12.</br>The licensee notified the NRC Resident Inspector. licensee notified the NRC Resident Inspector. +
23:31:00, 30 June 2005 +
41,816 +
00:08:00, 1 July 2005 +
23:31:00, 30 June 2005 +
During an NRC Triennial Fire Protection Au … During an NRC Triennial Fire Protection Audit the Inspector identified a fuse coordination issue between 130VDC supply circuit and breaker trip circuit fuses for the Standby Feedwater (SBFW) Pump switchgear. The coordination ratio was found to be too low to support requirements for fire related safe shutdown equipment under Generic Letter 81-12. Impacted equipment is SBFW Pumps A & B and control circuits required for Appendix R Alternative Shutdown auxiliary equipment. This event is being reported as an unanalyzed condition that significantly degraded plant safety under 10CFR50.72(b)(3)(ii)(B).</br>The impacted equipment has been declared inoperable and a team is currently working on design changes to change fuse sizes for the breaker trip circuit/supply circuit to meet the requirements of Generic Letter 81-12.</br>The licensee notified the NRC Resident Inspector. licensee notified the NRC Resident Inspector. +
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00:00:00, 1 July 2005 +
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>.
02:20:41, 2 March 2018 +
00:08:00, 1 July 2005 +
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0.0258 d (0.62 hours, 0.00369 weeks, 8.49276e-4 months) +
23:31:00, 30 June 2005 +
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.