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05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced
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Category
LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT  and Licensee Event Report
Accession number
ML20073E578  +
CFR
10 CFR 50.73#a2iv +
Docket
05000260  +  and 00260  +
From
Tennessee Valley Authority +, Bynum J +  and Ridgell E +
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>.
05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +, 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +  and 05000260/LER-1991-006, :on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +
Hours
0.0248 d (0.594 hours, 0.00354 weeks, 8.138895e-4 months)  +  and 0.027 d (0.647 hours, 0.00385 weeks, 8.86565e-4 months)  +
Issue date
April 25, 1991  +
LER number
6  +
LER year
1,991  +
Manufacturer
General Electric +
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>.
13:21:35, 26 May 2025  +
NRC form
NRC Form 366, Licensee Event Report +
Page count
5  +
Reporting criterion
10 CFR 50.73(a)(2)(iv), System Actuation +
Site
Browns Ferry +
Start date
April 25, 1991  +
State
Tennessee +, Georgia +, Maryland +  and Washington +
System
Reactor Protection System +  and Intermediate Range Monitor +
Title
:on 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced   +
Title:
On 910329,unplanned Reactor Protection Sys Actuation Occurred During Average Power Range Monitor B Drifted High & Exceeded Setpoint.Caused by Unexpected Failure.Affected Components Replaced +
To
Office of Information Resources Management +
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.
https://lersearch.inl.gov/Index.aspx?Page=PDFView?Doc::2601991006R00.pdf  +  and http://pbadupws.nrc.gov/docs/ML2007/ML20073E578.pdf  +
 
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