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At approximately 3:00 pm (EST) on Tuesday, … At approximately 3:00 pm (EST) on Tuesday, March 1st, it was reported that 15.3kg of UO2 powder was removed from the UO2 Sinter Test Grinding Station (High Efficiency Particulate Air) HEPA filter housing transition. This clean-out was performed as a response to routine radiological surveys that indicated the presence of uranium. It was determined that this material was present during prior filter replacement in early February in which 30.9 kg of UO2 powder was removed. The total amount of UO2 powder present in the housing was therefore approximately 46 kg, which is greater than a safe mass.</br>The Sinter Test Grinding Station and associated equipment was already shut down because of the HEPA filter housing clean-out and remained down pending investigation and implementation of corrective actions. </br>Failure to maintain mass control resulted in a loss of double contingency for the filter housing. The double contingency controls required include (1) mass control and (2) moderation control. Moderation control, the 2nd leg of double contingency remained in place, was effective, and was not challenged. As a result, no unsafe condition existed. </br>The UO2 in the HEPA housing was transferred into (a) favorable geometry (of) 3-gallon cans per procedure. An investigation is ongoing.</br>At no time did an unsafe condition exist as the moderation control was in place, was effective, and was not challenged. Immediate corrective actions (are) complete (transfer of material into 3-gallons cans). Investigation of (the) event and implementation of long term corrective actions (are) pending.</br>The licensee will be notifying the NRC Region II, State, and Local Authorities.C Region II, State, and Local Authorities. +
20:00:00, 1 March 2011 +
46,650 +
11:10:00, 2 March 2011 +
20:00:00, 1 March 2011 +
At approximately 3:00 pm (EST) on Tuesday, … At approximately 3:00 pm (EST) on Tuesday, March 1st, it was reported that 15.3kg of UO2 powder was removed from the UO2 Sinter Test Grinding Station (High Efficiency Particulate Air) HEPA filter housing transition. This clean-out was performed as a response to routine radiological surveys that indicated the presence of uranium. It was determined that this material was present during prior filter replacement in early February in which 30.9 kg of UO2 powder was removed. The total amount of UO2 powder present in the housing was therefore approximately 46 kg, which is greater than a safe mass.</br>The Sinter Test Grinding Station and associated equipment was already shut down because of the HEPA filter housing clean-out and remained down pending investigation and implementation of corrective actions. </br>Failure to maintain mass control resulted in a loss of double contingency for the filter housing. The double contingency controls required include (1) mass control and (2) moderation control. Moderation control, the 2nd leg of double contingency remained in place, was effective, and was not challenged. As a result, no unsafe condition existed. </br>The UO2 in the HEPA housing was transferred into (a) favorable geometry (of) 3-gallon cans per procedure. An investigation is ongoing.</br>At no time did an unsafe condition exist as the moderation control was in place, was effective, and was not challenged. Immediate corrective actions (are) complete (transfer of material into 3-gallons cans). Investigation of (the) event and implementation of long term corrective actions (are) pending.</br>The licensee will be notifying the NRC Region II, State, and Local Authorities.C Region II, State, and Local Authorities. +
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>.
00:00:00, 2 March 2011 +
SNM-1097 +
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>.
23:21:05, 24 November 2018 +
11:10:00, 2 March 2011 +
0.632 d (15.17 hours, 0.0903 weeks, 0.0208 months) +
20:00:00, 1 March 2011 +
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.