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On 11/5/13 at 1746 (EST), Beaver Valley Un … On 11/5/13 at 1746 (EST), Beaver Valley Unit 1 Generator tripped on 'C' Transformer differential protection. The Unit was at 47%, so an automatic trip of the reactor was not expected. The reactor was tripped manually. Entered E-0 Reactor Trip Response. The Aux Feedwater Turbine Driven Pump automatically started as required and one motor driven pump was manually started. </br>At 1748, the control room received report of fire in the Turbine building. The deluge system had actuated and extinguished the fire in the Turbine plant mezzanine. Off-site assistance was staged and available.</br>At 1828, an Unusual Event was declared when fire brigade reports indications that an explosion and fire had occurred in a cable tray in the Unit 1 Turbine Mezzanine.</br> </br>The (NRC) Resident Inspector was notified of the events that occurred.</br>At 1836, NRC (Resident Inspector) was notified of the Unusual Event.</br>Cause of the cable tray explosion and fire is being investigated.</br>The reactor trip was uncomplicated and Unit 1 is stable in mode 3 with decay heat being released to the main condenser. Normal offsite power is available. Unit 2 continues to operate at 100% and there is no impact on the health and safety of the public.</br>* * * UPDATE FROM J. A. DAUGHERTY TO JOHN SHOEMAKER AT 2005 EST ON 11/05/13 * * *</br>At 1959 on 11/5/13, the licensee terminated the Unusual Event.</br>The licensee has notified the NRC Resident Inspector.</br>Notified the R1DO (Noggle), NRR EO (Skeen), IRD (Marshall). Notified the DHS SWO, FEMA, DHS NICC, and Nuclear SSA via e-mail.EMA, DHS NICC, and Nuclear SSA via e-mail. +
23:28:00, 5 November 2013 +
19:27:00, 5 November 2013 +
23:28:00, 5 November 2013 +
On 11/5/13 at 1746 (EST), Beaver Valley Un … On 11/5/13 at 1746 (EST), Beaver Valley Unit 1 Generator tripped on 'C' Transformer differential protection. The Unit was at 47%, so an automatic trip of the reactor was not expected. The reactor was tripped manually. Entered E-0 Reactor Trip Response. The Aux Feedwater Turbine Driven Pump automatically started as required and one motor driven pump was manually started. </br>At 1748, the control room received report of fire in the Turbine building. The deluge system had actuated and extinguished the fire in the Turbine plant mezzanine. Off-site assistance was staged and available.</br>At 1828, an Unusual Event was declared when fire brigade reports indications that an explosion and fire had occurred in a cable tray in the Unit 1 Turbine Mezzanine.</br> </br>The (NRC) Resident Inspector was notified of the events that occurred.</br>At 1836, NRC (Resident Inspector) was notified of the Unusual Event.</br>Cause of the cable tray explosion and fire is being investigated.</br>The reactor trip was uncomplicated and Unit 1 is stable in mode 3 with decay heat being released to the main condenser. Normal offsite power is available. Unit 2 continues to operate at 100% and there is no impact on the health and safety of the public.</br>* * * UPDATE FROM J. A. DAUGHERTY TO JOHN SHOEMAKER AT 2005 EST ON 11/05/13 * * *</br>At 1959 on 11/5/13, the licensee terminated the Unusual Event.</br>The licensee has notified the NRC Resident Inspector.</br>Notified the R1DO (Noggle), NRR EO (Skeen), IRD (Marshall). Notified the DHS SWO, FEMA, DHS NICC, and Nuclear SSA via e-mail.EMA, DHS NICC, and Nuclear SSA via e-mail. +
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47 +
00:00:00, 5 November 2013 +
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>.
01:52:45, 2 March 2018 +
19:27:00, 5 November 2013 +
true +
true +
-0.168 d (-4.02 hours, -0.0239 weeks, -0.00551 months) +
23:28:00, 5 November 2013 +
Feedwater + and Main Condenser +
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.