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05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled
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Category
LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT  and Licensee Event Report
Accession number
ML20079K848  +
Correspondence
NRC-91-12 +
Docket
05000301  +  and 00301  +
From
WEC Energy Group +, Zach J +  and Koehler T +
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>.
05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +, 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +  and 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +
Issue date
October 28, 1991  +
LER number
1  +
LER year
1,991  +
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>.
11:08:05, 26 May 2025  +
NRC
NRC-91-12 +
Page count
7  +
Site
Point Beach +
Start date
October 28, 1991  +
State
Wisconsin +  and Washington +
System
Main Steam Isolation Valve +  and Main Steam +
Title
:on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled   +
Title:
On 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled +
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::3011991001R01.pdf  +  and http://pbadupws.nrc.gov/docs/ML2007/ML20079K848.pdf  +
 
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