Browse wiki

Jump to navigation Jump to search
ENS 43092
Show incoming properties
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation +, 10 CFR 50.72(b)(3)(iv)(A), System Actuation +, 10 CFR 50.72#b2ivB +  and 10 CFR 50.72#b3ivA +
Current power
0  +
Current reactor mode
Hot Shutdown +
Description
Unit 2 reactor scrammed due to a main turb … Unit 2 reactor scrammed due to a main turbine trip. PCIS (Primary Containment Isolation Signal) groups 2, 3,and 6 isolated, CREV (Control Room Emergency Ventilation) A, SBGT (Standby Gas Treatment) trains A, B, and C started as expected. All control rods fully inserted, eight main steam relief valves lifted and no ECCS actuations occurred. This event is reportable within four hours according to 10CFR50.72(b)(2)(iv)(B) and eight hours according to 10CFR50.72(b)(3)(iv)(A).</br>The turbine trip was the result of the 500kV main output breaker opening causing the generator output breaker to open. All relief valves fully seated during the scram recovery. The reactor water level is being maintained using normal feedwater and decay heat is being removed using the steam dumps. The plant is using the startup transformer for electrical power. </br>The cause of the 500kV breaker opening is under investigation.</br>The licensee will notify the NRC Resident Inspector.ee will notify the NRC Resident Inspector.  +
Discovered date
14:16:00, 11 January 2007  +
ENS id number
43,092  +
Emergency class
Non Emergency +
Entered date
13:16:00, 11 January 2007  +
Equipment trip
Turbine Trip +
Event date
14:16:00, 11 January 2007  +
Event description
Unit 2 reactor scrammed due to a main turb … Unit 2 reactor scrammed due to a main turbine trip. PCIS (Primary Containment Isolation Signal) groups 2, 3,and 6 isolated, CREV (Control Room Emergency Ventilation) A, SBGT (Standby Gas Treatment) trains A, B, and C started as expected. All control rods fully inserted, eight main steam relief valves lifted and no ECCS actuations occurred. This event is reportable within four hours according to 10CFR50.72(b)(2)(iv)(B) and eight hours according to 10CFR50.72(b)(3)(iv)(A).</br>The turbine trip was the result of the 500kV main output breaker opening causing the generator output breaker to open. All relief valves fully seated during the scram recovery. The reactor water level is being maintained using normal feedwater and decay heat is being removed using the steam dumps. The plant is using the startup transformer for electrical power. </br>The cause of the 500kV breaker opening is under investigation.</br>The licensee will notify the NRC Resident Inspector.ee will notify 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 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +, ENS 43092 +  and ENS 43092 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 11 January 2007  +
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>.
22:37:28, 24 September 2017  +
NRC officer
Mark Abramovitz +
Notification date
13:16:00, 11 January 2007  +
Originated by
Rodney Nacoste +
Reactor critical
true  +
Reactor type
GE-4 +
Region
NRC Region 2 +
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
-0.0417 d (-1 hours, -0.00595 weeks, -0.00137 months)  +
Site
Browns Ferry +
Start date
14:16:00, 11 January 2007  +
State
Alabama +
System
Feedwater +, Control Rod +  and Main Steam +
Title
Reactor Scram When Turbine Output Breakers Opened  +
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/2007/20070112en.html#en43092  +
Unit
2  +
Retrieved from "https://kanterella.com/Special:Browse/:ENS-2043092"