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At 1302 (CDT), 6/16/05, during investigati … At 1302 (CDT), 6/16/05, during investigation of an electrical ground affecting safety related battery NK04, a channel failure alarm actuated for SA075B, Main Steam and Feedwater Isolation Actuation control panel. Work at KJ122, 'B' Emergency Diesel Generator (EDG) local control panel, was suspended and troubleshooting efforts commenced to determine the cause of the SA075B alarm. Concurrently, SA075B was declared Inoperable at 1302 (CDT) and Engineered Safety Feature Actuation System Technical Specification Action statement 3.3.2.S was entered which allowed 6 hours to restore the train to Operable status, or be in Mode 3 within the following 6 hours. As of 1902 (CDT), all repairs and retests had not been completed. A reactor shutdown was commenced at 1902 (CDT) in accordance with Technical Specification 3.3.2.S, which is reportable per 10CFR50.72(b)(2)(i).</br>The licensee is continuing their investigation to identify cause of the electrical ground but does not anticipate exiting the LCO Action Statement before completing the Unit shutdown. Safety related battery NK04 is currently operable with the faulted loads isolated. The "B" EDG remains Inoperable at this time for troubleshooting.</br>The licensee informed the NRC Resident Inspector.ensee informed the NRC Resident Inspector. +
00:02:00, 17 June 2005 +
22:16:00, 16 June 2005 +
00:02:00, 17 June 2005 +
At 1302 (CDT), 6/16/05, during investigati … At 1302 (CDT), 6/16/05, during investigation of an electrical ground affecting safety related battery NK04, a channel failure alarm actuated for SA075B, Main Steam and Feedwater Isolation Actuation control panel. Work at KJ122, 'B' Emergency Diesel Generator (EDG) local control panel, was suspended and troubleshooting efforts commenced to determine the cause of the SA075B alarm. Concurrently, SA075B was declared Inoperable at 1302 (CDT) and Engineered Safety Feature Actuation System Technical Specification Action statement 3.3.2.S was entered which allowed 6 hours to restore the train to Operable status, or be in Mode 3 within the following 6 hours. As of 1902 (CDT), all repairs and retests had not been completed. A reactor shutdown was commenced at 1902 (CDT) in accordance with Technical Specification 3.3.2.S, which is reportable per 10CFR50.72(b)(2)(i).</br>The licensee is continuing their investigation to identify cause of the electrical ground but does not anticipate exiting the LCO Action Statement before completing the Unit shutdown. Safety related battery NK04 is currently operable with the faulted loads isolated. The "B" EDG remains Inoperable at this time for troubleshooting.</br>The licensee informed the NRC Resident Inspector.ensee informed the NRC Resident Inspector. +
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100 +
00:00:00, 16 June 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>.
02:20:47, 2 March 2018 +
22:16:00, 16 June 2005 +
true +
false +
-0.0738 d (-1.77 hours, -0.0105 weeks, -0.00242 months) +
00:02:00, 17 June 2005 +
Unit Commenced a Tech Spec Required Shutdown Due to an Electrical Problem Affecting a Safety Related Battery +
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