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The equalizing valve for one of the four M … The equalizing valve for one of the four Main Steam Line (MSL) Flow - High differential pressure switches on the 'B' MSL was leaking through. The leak effectively reduced the differential pressure across all four MSL Flow - High valves on the 'B' MSL. This reduction in differential pressure thus potentially would not allow the switches to isolate the 'B' MSL at the required setpoint. This switch was for group 1 isolation. This loss of safety function was restored by isolating the faulty valve block for DPIS-2-117A. All other switches are now reading normally. The repairs for the faulty valve are in progress.</br>The licensee will notify NRC Resident Inspector, State, and local authorities.t Inspector, State, and local authorities. +
02:30:00, 13 May 2009 +
45,060 +
02:36:00, 13 May 2009 +
02:30:00, 13 May 2009 +
The equalizing valve for one of the four M … The equalizing valve for one of the four Main Steam Line (MSL) Flow - High differential pressure switches on the 'B' MSL was leaking through. The leak effectively reduced the differential pressure across all four MSL Flow - High valves on the 'B' MSL. This reduction in differential pressure thus potentially would not allow the switches to isolate the 'B' MSL at the required setpoint. This switch was for group 1 isolation. This loss of safety function was restored by isolating the faulty valve block for DPIS-2-117A. All other switches are now reading normally. The repairs for the faulty valve are in progress.</br>The licensee will notify NRC Resident Inspector, State, and local authorities.t Inspector, State, and local authorities. +
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50 +
00:00:00, 13 May 2009 +
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>.
02:12:05, 2 March 2018 +
02:36:00, 13 May 2009 +
true +
false +
0.00417 d (0.1 hours, 5.952381e-4 weeks, 1.3698e-4 months) +
02:30:00, 13 May 2009 +
Instrument Valve Malfunction Potentially Affecting the Isolation Capability of One of the Main Steam Lines +
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.