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Nine Mile Point Unit 1 experienced an auto … Nine Mile Point Unit 1 experienced an automatic RPS actuation (scram) on Monday, May 02, 2011 at 2051. Cause of the RPS actuation is not understood at this time. All control rods inserted to position 00. N1-EOP-2 entered due to low reactor water level following trip (expected plant response). Reactor pressure stabilized 800 to 1000 psig, reactor water level restored and maintained 53 to 95 inches. Automatic initiation of the High Pressure Coolant Injection system occurred following plant trip (normal actuation).</br>The reactor is stable in Hot Shutdown. The licensee characterized the scram as uncomplicated. All rods fully inserted, normal feed water is supplying the reactor with decay heat being removed to the condenser. The unit is in a normal shutdown electrical lineup and the scram had no impact on Unit 2. All systems functioned as required. The unit was operating at 47% power at the time of the event due to feed pump maintenance.</br>The licensee does not have a first-out indication for the reactor scram and is still investigating the cause of the scram.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
00:51:00, 3 May 2011 +
46,808 +
22:55:00, 2 May 2011 +
00:51:00, 3 May 2011 +
Nine Mile Point Unit 1 experienced an auto … Nine Mile Point Unit 1 experienced an automatic RPS actuation (scram) on Monday, May 02, 2011 at 2051. Cause of the RPS actuation is not understood at this time. All control rods inserted to position 00. N1-EOP-2 entered due to low reactor water level following trip (expected plant response). Reactor pressure stabilized 800 to 1000 psig, reactor water level restored and maintained 53 to 95 inches. Automatic initiation of the High Pressure Coolant Injection system occurred following plant trip (normal actuation).</br>The reactor is stable in Hot Shutdown. The licensee characterized the scram as uncomplicated. All rods fully inserted, normal feed water is supplying the reactor with decay heat being removed to the condenser. The unit is in a normal shutdown electrical lineup and the scram had no impact on Unit 2. All systems functioned as required. The unit was operating at 47% power at the time of the event due to feed pump maintenance.</br>The licensee does not have a first-out indication for the reactor scram and is still investigating the cause of the scram.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
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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>.
22:28:08, 24 September 2017 +
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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.