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ENS 45583
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Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation +  and 10 CFR 50.72(b)(3)(iv)(A), System Actuation +
Current power
0  +
Current reactor mode
Hot Standby +
Description
An automatic reactor trip occurred due to … An automatic reactor trip occurred due to a turbine trip caused by a generator electrical fault trip. The cause of the electrical fault is under investigation. All rods fully inserted into the reactor. The auxiliary feedwater pump started and is maintaining steam generator level. The reactor is NOP and NOT. The post trip electrical line-up is being back-fed from off-site power through the RSST transformer. All other post trip actions are standard and all systems are operating as expected. There was no affect on Unit-2.</br>The licensee will contact the NRC Resident Inspector.e will contact the NRC Resident Inspector.  +
Discovered date
03:53:00, 20 December 2009  +
ENS id number
45,583  +
Emergency class
Non Emergency +
Entered date
00:06:00, 20 December 2009  +
Equipment trip
Turbine Trip +
Event date
03:53:00, 20 December 2009  +
Event description
An automatic reactor trip occurred due to … An automatic reactor trip occurred due to a turbine trip caused by a generator electrical fault trip. The cause of the electrical fault is under investigation. All rods fully inserted into the reactor. The auxiliary feedwater pump started and is maintaining steam generator level. The reactor is NOP and NOT. The post trip electrical line-up is being back-fed from off-site power through the RSST transformer. All other post trip actions are standard and all systems are operating as expected. There was no affect on Unit-2.</br>The licensee will contact the NRC Resident Inspector.e will contact the NRC Resident Inspector.  +
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 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +, ENS 45583 +  and ENS 45583 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 20 December 2009  +
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>.
02:10:36, 2 March 2018  +
NRC officer
Vince Klco +
Notification date
00:06:00, 20 December 2009  +
Originated by
Norman Kuzel +
Reactor critical
true  +
Reactor type
Westinghouse PWR 4-Loop +
Region
NRC Region 1 +
Reporting criterion
10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation +  and 10 CFR 50.72(b)(3)(iv)(A), System Actuation +
Reporting time
-0.158 d (-3.78 hours, -0.0225 weeks, -0.00518 months)  +
Scram
Automatic Scram +
Site
Millstone +
Start date
03:53:00, 20 December 2009  +
State
Connecticut +
System
Steam Generator +  and Auxiliary Feedwater +
Title
Automatic Reactor Trip Caused by a Turbine/Generator Electrical Fault  +
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/2009/20091221en.html#en45583  +
Unit
3  +
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