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05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording
Show incoming properties 
Category
Licensee Event Report, TEXT-SAFETY REPORT  and LICENSEE EVENT REPORT (SEE ALSO AO RO)
Accession number
ML20245A451  +
CFR
10 CFR 50.73 +, 10 CFR 6 +, 10 CFR 50.73#a2iv +  and 10 CFR 50.72#b2ii +
Docket
05000423  +  and 00423  +
Equipment trip
Reactor Trip +
From
NORTHEAST UTILITIES +, Haynes H +  and Conway R +
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>.
05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +, 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +  and 05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +
Hours
5.555556e-4 d (0.0133 hours, 7.936508e-5 weeks, 1.8264e-5 months)  +
Issue date
June 12, 1989  +
LER number
9  +
LER year
1,989  +
Manufacturer
Westinghouse +
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>.
21:53:20, 22 May 2025  +
NRC form
NRC Form 366A +  and NRC Form 366, Licensee Event Report +
Page count
4  +
Procedure
MP-13196 +
Processing error"Processing error" is a predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> and represents errors that appeared in connection with improper value annotations or input processing.
05000423/LER-1989-009, :on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +
Reporting criterion
10 CFR 50.73(a)(2)(v), Loss of Safety Function +, 10 CFR 50.73(a)(2)(iv), System Actuation +  and 10 CFR 50.73(a)(2) +
SSC
4l4l7l-l1l7l9l +, 31so-0104 +  and 0S414-0270 +
Site
Millstone +
Site license
Millstone +
Start date
June 12, 1989  +
State
Connecticut +
System
Steam Generator +, Reactor Coolant System +, Feedwater +, Reactor Protection System +, Main Steam Isolation Valve +  and Auxiliary Feedwater +
Title
:on 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording   +
Title:
On 890511,reactor Trip Occurred Causing Control Rods to Unlatch.Caused by Procedural Inadequacy. Procedures Changed to Require Rods to Be Unlatched Before Connecting Rod Drop Time Recording +
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::4231989009R00.pdf  +  and http://pbadupws.nrc.gov/docs/ML2024/ML20245A451.pdf  +
 
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