Browse wiki
Jump to navigation
Jump to search
GE Nuclear Energy provided information con … GE Nuclear Energy provided information concerning a reportable condition on the stability Option III Period Based Detection Algorithm (PBDA) for the Oscillation Power Range Monitor (OPRM) installed at the affected Licensee plants listed below. The basic component with the defect is specification of the allowable values for the adjustable period confirmation variables in the PBDA used in Stability Option III. The defect is that certain values of period tolerance and conditioning filter cutoff frequency within the previously specified acceptable range could produce sufficient successive confirmation count resets such that Safety Limit Minimum Critical Power Ratio (SLMCPR) protection might not be provided for all anticipated reactor instabilities. </br>This condition does not produce a substantial safety hazard and there is no threat of fuel failure. However, because the condition could contribute to exceeding the SLMCPR, it is a reportable condition.</br>List of Affected Plants:</br>Clinton</br>Brunswick 1 & 2</br>Nine Mile Point 2</br>Fermi 2</br>Columbia</br>Dresden 2 & 3</br>LaSalle 1 & 2</br>Limerick 1 & 2</br>Peach Bottom 2 & 3</br>Quad Cities 1 & 2</br>Perry 1</br>Susquehanna 1 & 2</br>Hope Creek</br>Hatch 1 & 2</br>Browns Ferry 2 & 3erry 1
Susquehanna 1 & 2
Hope Creek
Hatch 1 & 2
Browns Ferry 2 & 3 +
07:00:00, 4 October 2003 +
40,223 +
18:27:00, 4 October 2003 +
07:00:00, 4 October 2003 +
GE Nuclear Energy provided information con … GE Nuclear Energy provided information concerning a reportable condition on the stability Option III Period Based Detection Algorithm (PBDA) for the Oscillation Power Range Monitor (OPRM) installed at the affected Licensee plants listed below. The basic component with the defect is specification of the allowable values for the adjustable period confirmation variables in the PBDA used in Stability Option III. The defect is that certain values of period tolerance and conditioning filter cutoff frequency within the previously specified acceptable range could produce sufficient successive confirmation count resets such that Safety Limit Minimum Critical Power Ratio (SLMCPR) protection might not be provided for all anticipated reactor instabilities. </br>This condition does not produce a substantial safety hazard and there is no threat of fuel failure. However, because the condition could contribute to exceeding the SLMCPR, it is a reportable condition.</br>List of Affected Plants:</br>Clinton</br>Brunswick 1 & 2</br>Nine Mile Point 2</br>Fermi 2</br>Columbia</br>Dresden 2 & 3</br>LaSalle 1 & 2</br>Limerick 1 & 2</br>Peach Bottom 2 & 3</br>Quad Cities 1 & 2</br>Perry 1</br>Susquehanna 1 & 2</br>Hope Creek</br>Hatch 1 & 2</br>Browns Ferry 2 & 3erry 1
Susquehanna 1 & 2
Hope Creek
Hatch 1 & 2
Browns Ferry 2 & 3 +
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>.
00:00:00, 4 October 2003 +
Various +
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>.
02:25:03, 2 March 2018 +
18:27:00, 4 October 2003 +
0.477 d (11.45 hours, 0.0682 weeks, 0.0157 months) +
07:00:00, 4 October 2003 +
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.