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ENS 53546
Show incoming properties
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor +, 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat +, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +  and 10 CFR 50.72#b3v +
Current power
100  +
Current reactor mode
Power Operation +
Description
On 8/10/2018 at 1445 (CDT) both trains of … On 8/10/2018 at 1445 (CDT) both trains of Cooling Water (Cooling Water Pumps for Emergency Diesel Generators) were declared INOPERABLE and both units entered (Technical Specification) (TS) 3.0.3 due to corroded jacket cooling water plugs for (the) 12 and 22 cooling water pump motors; therefore this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v). At 1543 (CDT), 08/10/2018 the 121 Cooling Water pump was aligned to the "A" Cooling Water train and the TS 3.0.3 condition was exited for both units. (After restoring train A cooling water the site entered a seven day limiting condition for operations, TS 3.7.8 for one inoperable cooling water pump.)</br>There was no impact on the health and safety of the public or plant personnel.</br>The NRC Resident Inspector has been notified.</br>* * * RETRACTION ON 09/29/2018 AT 2128 EDT FROM BRIAN JOHNSON TO OSSY FONT * * *</br>Testing and forensic analysis performed subsequent to the notification has determined the as-found condition would not have impacted either diesel-driven pumps' ability to start, run, and meet flow/pressure requirements to perform their required safety function. Therefore, EN# 53546 is being retracted. </br>The NRC Resident Inspector has been notified of the Event Notification retraction.</br>Notified R3DO (Kozak).ication retraction. Notified R3DO (Kozak).  +
Discovered date
05:00:00, 10 August 2018  +
ENS
ENS 53546 +
ENS id number
53,546  +
Emergency class
Non Emergency +
Entered date
23:13:00, 10 August 2018  +
Event date
05:00:00, 10 August 2018  +
Event description
On 8/10/2018 at 1445 (CDT) both trains of … On 8/10/2018 at 1445 (CDT) both trains of Cooling Water (Cooling Water Pumps for Emergency Diesel Generators) were declared INOPERABLE and both units entered (Technical Specification) (TS) 3.0.3 due to corroded jacket cooling water plugs for (the) 12 and 22 cooling water pump motors; therefore this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v). At 1543 (CDT), 08/10/2018 the 121 Cooling Water pump was aligned to the "A" Cooling Water train and the TS 3.0.3 condition was exited for both units. (After restoring train A cooling water the site entered a seven day limiting condition for operations, TS 3.7.8 for one inoperable cooling water pump.)</br>There was no impact on the health and safety of the public or plant personnel.</br>The NRC Resident Inspector has been notified.</br>* * * RETRACTION ON 09/29/2018 AT 2128 EDT FROM BRIAN JOHNSON TO OSSY FONT * * *</br>Testing and forensic analysis performed subsequent to the notification has determined the as-found condition would not have impacted either diesel-driven pumps' ability to start, run, and meet flow/pressure requirements to perform their required safety function. Therefore, EN# 53546 is being retracted. </br>The NRC Resident Inspector has been notified of the Event Notification retraction.</br>Notified R3DO (Kozak).ication retraction. Notified R3DO (Kozak).  +
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ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +, ENS 53546 +  and ENS 53546 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 29 September 2018  +
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>.
17:19:16, 30 October 2018  +
NRC officer
Ossy Font +
Notification date
23:13:00, 10 August 2018  +
Originated by
Jeffrey Human +
Person
Ossy Font +
Reactor critical
true  +
Reactor scram
false  +
Region
NRC Region 3 +
Reporting criterion
10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor +, 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat +  and 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +
Reporting time
0.759 d (18.22 hours, 0.108 weeks, 0.025 months)  +
Retracted
true  +
Site
Prairie Island +
Start date
05:00:00, 10 August 2018  +
State
Minnesota +
System
Emergency Diesel Generator +
TS
TS-3.0.3 +  and TS-3.7.8 +
Title
Emergency Diesel Generator Cooling Water Pumps Declared 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/2018/20181001en.html#en53546  +
Unit
1  +  and 2  +
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