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Condenser offgas radiation monitor flow wa … Condenser offgas radiation monitor flow was blocked. Both Offgas Radiation Monitors were affected and out of service. We entered T.S. 3.0.1 - When a Limiting Condition for Operation is not met, within 1 hour action shall be initiated to place the unit in a condition in which the specification does not apply:</br>1. Hot Standby within 6 hours.</br>2. Hot Shutdown with following 6 hours.</br>3. Cold Shutdown with subsequent 24 hours.</br>We started to shutdown the Unit at 0100 (hours) on 11 March 2006. Removed blockage from condenser offgas radiation monitors common exhaust and evaluated operability of the condenser offgas radiation monitors. At 0315 (hours) on 11 March 2006, we returned RM-A-5 and RM-A-15 (Condenser Offgas Radiation Monitors) to service and exited T.S. 3.0.1.</br>We stopped the power reduction at 0251 (hours) on 11 March 2006 while performing the evaluation on the condenser offgas radiation monitors. We stopped the power reduction at 73% reactor power. We started power escalation to 100% at 0338 (hours) on 11 March 2006.</br>The blockage was discovered at 2125 hours on 3/10/2006 during rounds by Secondary Plant Operator who noted that the normal 1 SCFM exhaust flow was reading zero flow. During troubleshooting to discover the cause of the blockage, a bluish foreign material was found in the common exhaust piping. An investigation is underway to identify the source of the foreign material. </br>The licensee informed the NRC Resident Inspector.ensee informed the NRC Resident Inspector. +
06:00:00, 11 March 2006 +
42,406 +
08:35:00, 11 March 2006 +
06:00:00, 11 March 2006 +
Condenser offgas radiation monitor flow wa … Condenser offgas radiation monitor flow was blocked. Both Offgas Radiation Monitors were affected and out of service. We entered T.S. 3.0.1 - When a Limiting Condition for Operation is not met, within 1 hour action shall be initiated to place the unit in a condition in which the specification does not apply:</br>1. Hot Standby within 6 hours.</br>2. Hot Shutdown with following 6 hours.</br>3. Cold Shutdown with subsequent 24 hours.</br>We started to shutdown the Unit at 0100 (hours) on 11 March 2006. Removed blockage from condenser offgas radiation monitors common exhaust and evaluated operability of the condenser offgas radiation monitors. At 0315 (hours) on 11 March 2006, we returned RM-A-5 and RM-A-15 (Condenser Offgas Radiation Monitors) to service and exited T.S. 3.0.1.</br>We stopped the power reduction at 0251 (hours) on 11 March 2006 while performing the evaluation on the condenser offgas radiation monitors. We stopped the power reduction at 73% reactor power. We started power escalation to 100% at 0338 (hours) on 11 March 2006.</br>The blockage was discovered at 2125 hours on 3/10/2006 during rounds by Secondary Plant Operator who noted that the normal 1 SCFM exhaust flow was reading zero flow. During troubleshooting to discover the cause of the blockage, a bluish foreign material was found in the common exhaust piping. An investigation is underway to identify the source of the foreign material. </br>The licensee informed the NRC Resident Inspector.ensee informed the NRC Resident Inspector. +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
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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>.
02:19:11, 2 March 2018 +
08:35:00, 11 March 2006 +
true +
false +
0.108 d (2.58 hours, 0.0154 weeks, 0.00353 months) +
06:00:00, 11 March 2006 +
Unit Entered a T.S. Required Shutdown After Declaring Both Condenser Offgas Radiation Monitors Inoperable +
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.