Browse wiki
Jump to navigation
Jump to search
97 +
At 2003 on 6/10/07, the division 3 Nuclear … At 2003 on 6/10/07, the division 3 Nuclear System Protection System (NSPS) inverter power supply failed for unknown reasons. As a result of this failure, the High Pressure Core Spray (HPCS) system has been declared inoperable. This is a failure of a single train safety system and is reportable under 10 CFR 50.72(b)(3)(v)(D). Troubleshooting has been initiated to determine the cause of this failure.</br>The licensee notified the NRC Resident Inspector.</br>* * * RETRACTION ON 07/6/07 AT 1639 EDT FROM TOM CHALMERS TO MARK ABRAMOVITZ * * *</br>This event is being retracted. An evaluation was performed and it was determined that no loss of safety function occurred following the failure of the Division 3 NSPS Inverter. The investigation determined that a circuit board failed on the inverter causing a blown fuse. The inverter was found in the reverse transfer position and AC power was automatically transferred to its alternate source, supplying its Division 3 loads. The High Pressure Core Spray system remained fully capable of performing its safety function to start and inject under both LOOP and LOCA conditions.</br>The licensee will notify the NRC Resident Inspector.</br>Notified the R3DO (Lanksbury). Inspector.
Notified the R3DO (Lanksbury). +
01:03:00, 11 June 2007 +
01:17:00, 11 June 2007 +
01:03:00, 11 June 2007 +
At 2003 on 6/10/07, the division 3 Nuclear … At 2003 on 6/10/07, the division 3 Nuclear System Protection System (NSPS) inverter power supply failed for unknown reasons. As a result of this failure, the High Pressure Core Spray (HPCS) system has been declared inoperable. This is a failure of a single train safety system and is reportable under 10 CFR 50.72(b)(3)(v)(D). Troubleshooting has been initiated to determine the cause of this failure.</br>The licensee notified the NRC Resident Inspector.</br>* * * RETRACTION ON 07/6/07 AT 1639 EDT FROM TOM CHALMERS TO MARK ABRAMOVITZ * * *</br>This event is being retracted. An evaluation was performed and it was determined that no loss of safety function occurred following the failure of the Division 3 NSPS Inverter. The investigation determined that a circuit board failed on the inverter causing a blown fuse. The inverter was found in the reverse transfer position and AC power was automatically transferred to its alternate source, supplying its Division 3 loads. The High Pressure Core Spray system remained fully capable of performing its safety function to start and inject under both LOOP and LOCA conditions.</br>The licensee will notify the NRC Resident Inspector.</br>Notified the R3DO (Lanksbury). Inspector.
Notified the R3DO (Lanksbury). +
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>.
97 +
00:00:00, 6 July 2007 +
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>.
02:16:25, 2 March 2018 +
01:17:00, 11 June 2007 +
true +
false +
0.00958 d (0.23 hours, 0.00137 weeks, 3.15054e-4 months) +
01:03:00, 11 June 2007 +
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.