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05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves
Show incoming properties 
Category
LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT  and Licensee Event Report
Accession number
ML20134D868  +
Atomic Element
Lead +
BYRON
BYRON-85-1121 +  and BYRON 85-1121 +
CFR
10 CFR 50.73#a +
Correspondence
L 50 +, BYRON-85-1121 +  and BYRON 85-1121 +
Docket
05000454  +  and 00454  +
Equipment trip
Reactor Trip +  and Turbine Trip +
From
Exelon +, Querio R +  and Wehner L +
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>.
05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +, 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +  and 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +
Issue date
August 12, 1985  +
L
L 50 +
LER number
66  +
LER year
1,985  +
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>.
10:56:01, 25 May 2025  +
Page count
3  +
Reporting criterion
10 CFR 50.73(a)(2)(v), Loss of Safety Function +, 10 CFR 50.73(a)(2) +  and 10 CFR 50.73(a)(2)(1) +
SSC
7s-19-9 +
Site
Byron +
Start date
August 12, 1985  +
State
Illinois +  and Washington +
System
Steam Generator +
Title
:on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves   +
Title:
On 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves +
To
NRC OFFICE OF ADMINISTRATION (ADM) +
Topic
Stroke time +
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::4541985066R00.pdf  +  and http://pbadupws.nrc.gov/docs/ML2013/ML20134D868.pdf  +
 
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