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ENS 53811
Show incoming properties
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +, 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material +, 10 CFR 50.72#b3vC +  and 10 CFR 50.72#b3vD +
Current power
5  +
Current reactor mode
Startup +
Description
On January 1, 2019 at approximately 0454 E … On January 1, 2019 at approximately 0454 EST, while performing planned maintenance activities on the Feedwater Distributed Control System (FW DCS), it was discovered that the automatic trip instrumentation of the Gland Seal Exhauster (GSE) was inoperable. The automatic GSE trip is assumed in the safety analysis for the Control Rod Drop Accident (CRDA) and is required when Thermal Power is less than or equal to 10%.</br>The automatic trip function of the GSE was inoperable for 1 minute, 19 seconds. No Control Rod movement occurred while the automatic trip of the GSE was inoperable. There was no adverse impact to public health and safety or to plant employees and there was no radiological release. </br>This report is being made pursuant to 10CFR50.72(b)(3)(v)(C) and 10CFR50.72(b)(3)(v)(D).</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified.  +
Discovered date
05:00:00, 1 January 2019  +
ENS id number
53,811  +
Emergency class
Non Emergency +
Entered date
11:02:00, 1 January 2019  +
Event date
05:00:00, 1 January 2019  +
Event description
On January 1, 2019 at approximately 0454 E … On January 1, 2019 at approximately 0454 EST, while performing planned maintenance activities on the Feedwater Distributed Control System (FW DCS), it was discovered that the automatic trip instrumentation of the Gland Seal Exhauster (GSE) was inoperable. The automatic GSE trip is assumed in the safety analysis for the Control Rod Drop Accident (CRDA) and is required when Thermal Power is less than or equal to 10%.</br>The automatic trip function of the GSE was inoperable for 1 minute, 19 seconds. No Control Rod movement occurred while the automatic trip of the GSE was inoperable. There was no adverse impact to public health and safety or to plant employees and there was no radiological release. </br>This report is being made pursuant to 10CFR50.72(b)(3)(v)(C) and 10CFR50.72(b)(3)(v)(D).</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified.  +
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>.
ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +, ENS 53811 +  and ENS 53811 +
Initial power
5  +
Initial reactor mode
Startup +
Last update date
00:00:00, 1 January 2019  +
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>.
04:56:49, 24 February 2020  +
NRC officer
Joanna Bridge +
Notification date
11:02:00, 1 January 2019  +
Originated by
Ethan Hausser +
Reactor critical
true  +
Reactor scram
false  +
Region
NRC Region 3 +
Reporting criterion
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +  and 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material +
Reporting time
0.251 d (6.03 hours, 0.0359 weeks, 0.00826 months)  +
Scram
Automatic Scram +
Site
Fermi +
Start date
05:00:00, 1 January 2019  +
State
Michigan +
System
Feedwater +  and Control Rod +
Title
Gland Seal Exhauster - Automatic Trip Function Inoperable  +
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://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/20190102en.html#en53811  +
Unit
2  +
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