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ENS 41517
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 +  and 10 CFR 50.72(b)(2)(iv)(A), System Actuation - ECCS Discharge +
Current power
0  +
Current reactor mode
Hot Shutdown +
Description
The licensee provided the following inform … The licensee provided the following information via email (licensee text in quotes):</br>On 3/24/05 at approximately 0529 Unit 2 received a Group 1 isolation on main steam line high flow. All Group 1 valves closed as required and the reactor scrammed. The Isolation Condenser was manually initiated to control reactor pressure. Group 2 and 3 Containment Isolations occurred as expected. Investigation as to the cause of the Group 1 isolation is in progress.</br>All systems responded as required with no abnormalities noted.</br>The licensee also indicated that a Main Turbine Generator EHC transient occurred at the time of the isolation. All control rods fully inserted, the electrical grid is stable, and decay heat is being removed via the Isolation Condenser System.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector.  +
Discovered date
11:29:00, 24 March 2005  +
ENS id number
41,517  +
Emergency class
Non Emergency +
Entered date
07:59:00, 24 March 2005  +
Event date
11:29:00, 24 March 2005  +
Event description
The licensee provided the following inform … The licensee provided the following information via email (licensee text in quotes):</br>On 3/24/05 at approximately 0529 Unit 2 received a Group 1 isolation on main steam line high flow. All Group 1 valves closed as required and the reactor scrammed. The Isolation Condenser was manually initiated to control reactor pressure. Group 2 and 3 Containment Isolations occurred as expected. Investigation as to the cause of the Group 1 isolation is in progress.</br>All systems responded as required with no abnormalities noted.</br>The licensee also indicated that a Main Turbine Generator EHC transient occurred at the time of the isolation. All control rods fully inserted, the electrical grid is stable, and decay heat is being removed via the Isolation Condenser System.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector.  +
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ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +, ENS 41517 +  and ENS 41517 +
Initial power
96  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 24 March 2005  +
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>.
02:21:27, 2 March 2018  +
NRC officer
Mike Ripley +
Notification date
07:59:00, 24 March 2005  +
Originated by
Paul Wojkiewicz +
Reactor critical
true  +
Reactor type
GE-3 +
Region
NRC Region 3 +
Reporting criterion
10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation +, 10 CFR 50.72(b)(3)(iv)(A), System Actuation +  and 10 CFR 50.72(b)(2)(iv)(A), System Actuation - ECCS Discharge +
Reporting time
-0.146 d (-3.5 hours, -0.0208 weeks, -0.00479 months)  +
Scram
Automatic Scram +
Site
Dresden +
Start date
11:29:00, 24 March 2005  +
State
Illinois +
System
Main Turbine +, Main Steam Line +, Control Rod +  and Main Steam +
Title
Reactor Automatic Scram Due to Main Steam High Flow Isolation 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/2005/20050325en.html#en41517  +
Unit
2  +
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