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ENS 42285
Show incoming properties 
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +
Current power
100  +
Current reactor mode
Power Operation +
Description
50.72 (b) (3) (vi) Non-Emergency 8Hr Repor … 50.72 (b) (3) (vi) Non-Emergency 8Hr Reportable</br>When I&C was performing STP-051-4256, HPCS Drywell Pressure High Channel Calibration and Logic System Functional Test (B21-N067R, B21-N667R), a human performance error resulted in an invalid HPCS initiation signal. Division III diesel generator and the HPCS pump started. The HPCS injection valve stroked open and was manually overridden closed after full open indication, thus HPCS system injection was terminated. HPCS System was unavailable due to being overridden with an initiation signal present from 1932 until 2109 (CST) for a total of 1 Hr and 37 minutes.</br>NUREG 1022 states that single-train systems that perform safety functions (i.e., HPCS), when lost, prevents the fulfillment of the safety function of that system.</br>The licensee informed the NRC Resident Inspector. licensee informed the NRC Resident Inspector.  +
Discovered date
01:32:00, 25 January 2006  +
ENS id number
42,285  +
Emergency class
Non Emergency +
Entered date
01:33:00, 25 January 2006  +
Event date
01:32:00, 25 January 2006  +
Event description
50.72 (b) (3) (vi) Non-Emergency 8Hr Repor … 50.72 (b) (3) (vi) Non-Emergency 8Hr Reportable</br>When I&C was performing STP-051-4256, HPCS Drywell Pressure High Channel Calibration and Logic System Functional Test (B21-N067R, B21-N667R), a human performance error resulted in an invalid HPCS initiation signal. Division III diesel generator and the HPCS pump started. The HPCS injection valve stroked open and was manually overridden closed after full open indication, thus HPCS system injection was terminated. HPCS System was unavailable due to being overridden with an initiation signal present from 1932 until 2109 (CST) for a total of 1 Hr and 37 minutes.</br>NUREG 1022 states that single-train systems that perform safety functions (i.e., HPCS), when lost, prevents the fulfillment of the safety function of that system.</br>The licensee informed the NRC Resident Inspector. licensee informed the NRC Resident Inspector.  +
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ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +, ENS 42285 +  and ENS 42285 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 25 January 2006  +
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>.
22:39:30, 24 September 2017  +
NRC officer
Steve Sandin +
NUREG
NUREG-1022, Rev. 3, Supplement 2, Event Report Guidelines 10 CFR 50.72(b)(3)(ii) and 10 CFR 50.73(a)(2)(ii) Final Report +
Notification date
01:33:00, 25 January 2006  +
Originated by
Chad G. Blanchard +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
GE-6 +
Region
NRC Region 4 +
Reporting criterion
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +
Reporting time
8.333333e-4 d (0.02 hours, 1.190476e-4 weeks, 2.7396e-5 months)  +
Site
River Bend +
Start date
01:32:00, 25 January 2006  +
State
Louisiana +
System
High Pressure Core Spray +
Title
Invalid High Pressure Core Spray (Hpcs) Initiation Signal During Surveillance Testing  +
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/2006/20060126en.html#en42285  +
Unit
1  +
 
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