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05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified
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Category
LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT  and Licensee Event Report
Accession number
ML20065S476  +
Atomic Element
Tin +
CFR
10 CFR 50.73#a2ii +  and 10 CFR 50.73#a2 +
Docket
05000277  +  and 00277  +
From
Exelon +, (FORMERLY PHILADELPHIA ELECTRIC +, Fray J +  and Fulvio A +
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>.
05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +, 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +  and 05000277/LER-1990-035, :on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +
Hours
0.0116 d (0.278 hours, 0.00165 weeks, 3.805e-4 months)  +, 0.0154 d (0.369 hours, 0.00219 weeks, 5.049235e-4 months)  +, 6.944444e-5 d (0.00167 hours, 9.920635e-6 weeks, 2.283e-6 months)  +, 4.166667e-4 d (0.01 hours, 5.952381e-5 weeks, 1.3698e-5 months)  +, 0.0155 d (0.373 hours, 0.00222 weeks, 5.10631e-4 months)  +, 0.0165 d (0.395 hours, 0.00235 weeks, 5.414515e-4 months)  +  and 0.00133 d (0.0319 hours, 1.901455e-4 weeks, 4.37575e-5 months)  +
Issue date
December 17, 1990  +
LER number
35  +
LER year
1,990  +
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>.
00:04:23, 17 December 2024  +
Page count
6  +
Power source
4kV +
Procedure
AM +
Reporting criterion
10 CFR 50.73(a)(2)(v), Loss of Safety Function +, 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition +  and 10 CFR 50.73(a)(2)(1) +
Site
Peach Bottom +
Start date
December 17, 1990  +
State
Pennsylvania +, Maryland +  and Washington +
System
Secondary containment +, Emergency Diesel Generator +, Core Spray +, Residual Heat Removal +  and Emergency Core Cooling System +
TS
TS-3.0 +  and TS-3.0.C +
Test
Bench test +
Title
:on 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified   +
Title:
On 901115,discovered That Multiple Safety Sys Could Be Inoperable as Result of 4 Kv Emergency Bus Undervoltage Relays Outside Acceptable Calibr Limits.Caused by Inadequate Design.Relays Modified +
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::2771990035R00.pdf  +  and http://pbadupws.nrc.gov/docs/ML2006/ML20065S476.pdf  +
 
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