Browse wiki
Jump to navigation
Jump to search
On November 9, 2016, at approximately 1115 … On November 9, 2016, at approximately 1115 hours (EST), the speaker system in Buildings 302, 303, and 306 West was identified as non-operational while performing a functional test of the system. This speaker system is designed to annunciate alarms generated from the Criticality Accident Alarm System (CAAS) required by 10CFR70.24, alarms generated from the Fire Alarm Control Panel and Public Address System announcements. Additional functional testing identified that no redundant speakers could adequately provide speaker coverage for all affected areas of these buildings. Special Nuclear Material (SNM) is processed, handled, or stored within the areas where the speaker system failed; these areas require evacuation in the unlikely event of a nuclear criticality accident as described in the NFS Emergency Plan.</br>There were no actual radiological or other nuclear safety consequences. The potential consequence was that in the event of a nuclear criticality accident, evacuation could have been delayed for those personnel within these areas with a resultant increase of postulated doses. Additionally, awareness of a fire event could have been delayed for these same personnel. A series of compensatory actions were taken including implementing a plant-wide stop-movement of SNM, limiting access to the affected areas to essential personnel, and establishing radio communications between the personnel in these areas and the personnel continuously monitoring the alarm station panel.</br>On November 9, 2016, at approximately 1725 hours (EST), full compliance was restored by repairing a damaged cable and by successfully performing a speaker system test in the affected areas.</br>The licensee notified the NRC Resident Inspector on November 9, 2016.</br>NFS Event Number: 55579 November 9, 2016.
NFS Event Number: 55579 +
16:15:00, 9 November 2016 +
52,358 +
17:42:00, 9 November 2016 +
16:15:00, 9 November 2016 +
On November 9, 2016, at approximately 1115 … On November 9, 2016, at approximately 1115 hours (EST), the speaker system in Buildings 302, 303, and 306 West was identified as non-operational while performing a functional test of the system. This speaker system is designed to annunciate alarms generated from the Criticality Accident Alarm System (CAAS) required by 10CFR70.24, alarms generated from the Fire Alarm Control Panel and Public Address System announcements. Additional functional testing identified that no redundant speakers could adequately provide speaker coverage for all affected areas of these buildings. Special Nuclear Material (SNM) is processed, handled, or stored within the areas where the speaker system failed; these areas require evacuation in the unlikely event of a nuclear criticality accident as described in the NFS Emergency Plan.</br>There were no actual radiological or other nuclear safety consequences. The potential consequence was that in the event of a nuclear criticality accident, evacuation could have been delayed for those personnel within these areas with a resultant increase of postulated doses. Additionally, awareness of a fire event could have been delayed for these same personnel. A series of compensatory actions were taken including implementing a plant-wide stop-movement of SNM, limiting access to the affected areas to essential personnel, and establishing radio communications between the personnel in these areas and the personnel continuously monitoring the alarm station panel.</br>On November 9, 2016, at approximately 1725 hours (EST), full compliance was restored by repairing a damaged cable and by successfully performing a speaker system test in the affected areas.</br>The licensee notified the NRC Resident Inspector on November 9, 2016.</br>NFS Event Number: 55579 November 9, 2016.
NFS Event Number: 55579 +
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, 9 November 2016 +
SNM-124 +
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>.
22:53:04, 24 November 2018 +
17:42:00, 9 November 2016 +
0.0604 d (1.45 hours, 0.00863 weeks, 0.00199 months) +
16:15:00, 9 November 2016 +
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.