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Control Room Emergency Filtration System ( … Control Room Emergency Filtration System (CREFS) was declared inoperable at 1812 on 12/8/06 because the W-14A, F-16 Control Room Charcoal Filter Fan tripped during performance of the monthly technical specification surveillance test, TS-9.</br>This fan is required to be operable for operability of the CREFS System. This condition is covered by TS 3.7.9, Control Room Emergency Filtration System and both units have entered action condition A, 'CREFS Inoperable' with a required action to 'Restore CREFS to OPERABLE Status' with a completion time of 7 days.</br>CREFS is a single train system. Based on the guidance in NUREG-1022 for single train systems that perform safety functions, this condition was determined to be reportable under 10CFR50.72(b)(3)(v), 'Event or Condition That Could Have Prevented Fulfillment of a Safety Function'.</br>* * * RETRACTION PROVIDED BY VANDERWARF TO KOZAL ON 12/28/06 AT 0952 * * * </br>On December 8, 2006, at 22.42 EST, EN 43040 was made by the Point Beach Nuclear Plant in accordance with 10 CFR 50.72(b)(3)(v)(D) as a condition at the time of discovery could have prevented the fulfillment of a system function that is needed to mitigate the consequences of an accident. Control Room Emergency Filtration System (CREFS) fan W-1 4A, F-16 Control Room Charcoal Filter Fan tripped during performance of the monthly Technical Specification surveillance test. CREFS was declared inoperable.</br>After further evaluation, it was determined that the safety function of CREFS was not lost. Redundant fan W-14B was operable for the duration of the time fan W-14A was out of service. Single train portions of the system were not affected by the W-1 4A fan trip. Accordingly, this event is not reportable. EN 43040 is, therefore, retracted.</br>Notified R2DO (Burgess)refore, retracted.
Notified R2DO (Burgess) +
00:12:00, 9 December 2006 +
43,040 +
22:42:00, 8 December 2006 +
00:12:00, 9 December 2006 +
Control Room Emergency Filtration System ( … Control Room Emergency Filtration System (CREFS) was declared inoperable at 1812 on 12/8/06 because the W-14A, F-16 Control Room Charcoal Filter Fan tripped during performance of the monthly technical specification surveillance test, TS-9.</br>This fan is required to be operable for operability of the CREFS System. This condition is covered by TS 3.7.9, Control Room Emergency Filtration System and both units have entered action condition A, 'CREFS Inoperable' with a required action to 'Restore CREFS to OPERABLE Status' with a completion time of 7 days.</br>CREFS is a single train system. Based on the guidance in NUREG-1022 for single train systems that perform safety functions, this condition was determined to be reportable under 10CFR50.72(b)(3)(v), 'Event or Condition That Could Have Prevented Fulfillment of a Safety Function'.</br>* * * RETRACTION PROVIDED BY VANDERWARF TO KOZAL ON 12/28/06 AT 0952 * * * </br>On December 8, 2006, at 22.42 EST, EN 43040 was made by the Point Beach Nuclear Plant in accordance with 10 CFR 50.72(b)(3)(v)(D) as a condition at the time of discovery could have prevented the fulfillment of a system function that is needed to mitigate the consequences of an accident. Control Room Emergency Filtration System (CREFS) fan W-1 4A, F-16 Control Room Charcoal Filter Fan tripped during performance of the monthly Technical Specification surveillance test. CREFS was declared inoperable.</br>After further evaluation, it was determined that the safety function of CREFS was not lost. Redundant fan W-14B was operable for the duration of the time fan W-14A was out of service. Single train portions of the system were not affected by the W-1 4A fan trip. Accordingly, this event is not reportable. EN 43040 is, therefore, retracted.</br>Notified R2DO (Burgess)refore, retracted.
Notified R2DO (Burgess) +
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100 +
00:00:00, 28 December 2006 +
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>.
22:37:31, 24 September 2017 +
22:42:00, 8 December 2006 +
true +
false +
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00:12:00, 9 December 2006 +
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