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ENS 51506
Show incoming properties 
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(iv)(A), System Actuation +  and 10 CFR 50.72#b3ivA +
Current power
0  +
Current reactor mode
Hot Standby +
Description
At 0348 CDT, while Point Beach Unit 2 was … At 0348 CDT, while Point Beach Unit 2 was performing outage activities, it experienced a Main Power Transformer lockout and associated loss of busses (2A-01, 2A-02, 2B-01 and 2B-02). The loss of the two non-vital 4160 V buses resulted in actuation of the Unit 2 undervoltage logic which resulted in actuation of the Auxiliary Feedwater System. The Auxiliary Feedwater System functioned normally upon actuation.</br>This condition was determined to be reportable per 10CFR50.72(b)(3)(iv)(A)(6), PWR auxiliary or emergency feedwater system actuation.</br>This event did not affect the operating Unit 1.</br>The NRC Senior Resident Inspector has been notified.nior Resident Inspector has been notified.  +
Discovered date
08:48:00, 29 October 2015  +
Emergency class
Non Emergency +
Entered date
10:38:00, 29 October 2015  +
Event date
08:48:00, 29 October 2015  +
Event description
At 0348 CDT, while Point Beach Unit 2 was … At 0348 CDT, while Point Beach Unit 2 was performing outage activities, it experienced a Main Power Transformer lockout and associated loss of busses (2A-01, 2A-02, 2B-01 and 2B-02). The loss of the two non-vital 4160 V buses resulted in actuation of the Unit 2 undervoltage logic which resulted in actuation of the Auxiliary Feedwater System. The Auxiliary Feedwater System functioned normally upon actuation.</br>This condition was determined to be reportable per 10CFR50.72(b)(3)(iv)(A)(6), PWR auxiliary or emergency feedwater system actuation.</br>This event did not affect the operating Unit 1.</br>The NRC Senior Resident Inspector has been notified.nior 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 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +, ENS 51506 +  and ENS 51506 +
Initial power
0  +
Initial reactor mode
Hot Standby +
Last update date
00:00:00, 29 October 2015  +
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>.
01:46:27, 2 March 2018  +
NRC officer
Dan Livermore +
Notification date
10:38:00, 29 October 2015  +
Originated by
Kile Hess +
Reactor critical
false  +
Reactor scram
false  +
Reactor type
Westinghouse PWR 2-Loop +
Region
NRC Region 3 +
Reporting criterion
10 CFR 50.72(b)(3)(iv)(A), System Actuation +
Reporting time
0.0763 d (1.83 hours, 0.0109 weeks, 0.00251 months)  +
SSC
2A-01 +, 2A-02 +, 2B-01 +  and 2B-02 +
Site
Point Beach +
Start date
08:48:00, 29 October 2015  +
State
Wisconsin +
System
Auxiliary Feedwater +, Main Transformer +  and Emergency Feedwater System +
Title
Actuation of the Auxiliary Feedwater System Due to Main Transformer Lockout  +
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.
http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20151030en.html#en51506  +
Unit
2  +
 
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