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ENS 48534
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Category
ENS Notification  and Power Reactor
Agency
Lower Alloways Creek Township +
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
This notification is being made to report … This notification is being made to report that Salem Unit 2 has experienced an automatic reactor trip at 1130 EST. The reactor trip was caused by 24BF19, 24 steam generator feedwater regulation valve, not responding to demand signal that resulted in a reactor trip due to 24 steam generator lo-lo level. The cause of the 24BF19 failure to respond to demand is under investigation.</br>21, 22 & 23 AFW pumps all auto started as expected on the reactor trip feeding the steam generators. 23 AFW pump has been shutdown by procedure. 21 & 22 AFW pumps are maintaining steam generator levels with decay heat removal via the main steam dump system. All control & shutdown rods fully inserted on the reactor trip.</br>Salem Unit 2 is currently in mode 3. Reactor coolant system temperature is 547 degrees F with pressure at 2235 psig. There are no shut down technical specifications action statements in effect. </br>All ECCS and ESF systems are available. All safety related equipment responded as expected. There were no personnel injuries associated with this event.</br>The licensee will inform the Lower Alloways Creek Township, the State of New Jersey, and the State of Delaware. The licensee has informed the NRC Resident Inspector. The licensee has informed the NRC Resident Inspector.  +
Discovered date
16:30:00, 25 November 2012  +
ENS id number
48,534  +
Emergency class
Non Emergency +
Entered date
15:13:00, 25 November 2012  +
Equipment trip
Reactor Trip +
Event date
16:30:00, 25 November 2012  +
Event description
This notification is being made to report … This notification is being made to report that Salem Unit 2 has experienced an automatic reactor trip at 1130 EST. The reactor trip was caused by 24BF19, 24 steam generator feedwater regulation valve, not responding to demand signal that resulted in a reactor trip due to 24 steam generator lo-lo level. The cause of the 24BF19 failure to respond to demand is under investigation.</br>21, 22 & 23 AFW pumps all auto started as expected on the reactor trip feeding the steam generators. 23 AFW pump has been shutdown by procedure. 21 & 22 AFW pumps are maintaining steam generator levels with decay heat removal via the main steam dump system. All control & shutdown rods fully inserted on the reactor trip.</br>Salem Unit 2 is currently in mode 3. Reactor coolant system temperature is 547 degrees F with pressure at 2235 psig. There are no shut down technical specifications action statements in effect. </br>All ECCS and ESF systems are available. All safety related equipment responded as expected. There were no personnel injuries associated with this event.</br>The licensee will inform the Lower Alloways Creek Township, the State of New Jersey, and the State of Delaware. The licensee has informed the NRC Resident Inspector. The licensee has informed the NRC Resident Inspector.  +
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ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +, ENS 48534 +  and ENS 48534 +
Initial power
92  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 25 November 2012  +
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>.
02:02:25, 2 March 2018  +
NRC officer
Donald Norwood +
Notification date
15:13:00, 25 November 2012  +
Originated by
John Konovalchick +
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
-0.0533 d (-1.28 hours, -0.00762 weeks, -0.00175 months)  +
Scram
Automatic Scram +
Site
Salem +
Start date
16:30:00, 25 November 2012  +
State
New Jersey +  and Delaware +
System
Steam Generator +, Reactor Coolant System +, Feedwater +, Decay Heat Removal +  and Main Steam +
Title
Automatic Reactor Trip Due to Steam Generator Feedwater Regulator Valve Not Responding to Demand Signal  +
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/2012/20121126en.html#en48534  +
Unit
2  +
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