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05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored
Show incoming properties 
Category
LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT  and Licensee Event Report
Accession number
ML19350D771  +
Docket
05000302  +
Equipment trip
Reactor Trip +
From
Hernandez V +  and Duke Energy +
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>.
05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +, 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +  and 05000302/LER-1981-022-03, /03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored +
In package
ML19350D768 +
Issue date
May 11, 1981  +
LER number
22  +
LER year
1,981  +
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>.
07:13:10, 18 September 2025  +
Page count
1  +
Site
Crystal River +
Start date
May 11, 1981  +
System
Main Steam Isolation Valve +
TS
TS-3.7.1.5 +  and TS-3.6.3.1 +
Title
/03L-0:on 810412,following Reactor Trip,Main Steam Isolation Valve Msv Found Inoperable.Cause Undetermined.Mods Performed to Improve Valve Operation & Reliability. Functional Test Results Satisfactory.Operability Restored  +
To
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) +  and NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) +
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::3021981022R03.pdf  +  and http://pbadupws.nrc.gov/docs/ML1935/ML19350D771.pdf  +
 
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