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At 11:00 EST on Wednesday, January 1, 2014 … At 11:00 EST on Wednesday, January 1, 2014, during a scheduled functional test of the Cook Nuclear Plant (CNP) Technical Support Center (TSC) ventilation system, the following two dampers failed to properly open when the system was placed in emergency mode (ventilation flow directed through the emergency filtration unit):</br>12-HV-TSC-SD-5, TSC Ventilation Emergency Flow To & From Air Conditioner 12-HV-TSC-AC-1 Volume Damper</br>12-HV-TSC-SD-7, TSC Ventilation Emergency Filtration Unit 12-HV-TSC-FIL Inlet Volume Damper</br>The TSC ventilation system is therefore non-functional. This notification is being made in accordance with 10 CFR 50.72 (b)(3)(xiii) due to an emergency response facility being non-functional. Repair activities are in progress for repair of the two dampers.</br>Under certain accident conditions the TSC may become unavailable due to the inability of the air conditioning and charcoal filtration systems to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC personnel to the unaffected unit's control room if necessary. </br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATE FROM DAN KURTH TO CHARLES TEAL AT 0220 EST ON 1/2/14 * * *</br> After repairs were completed, the TSC was restored to service at 0130 EST on 1/2/14.</br>The licensee has notified the NRC Resident Inspector.ensee has notified the NRC Resident Inspector. +
16:00:00, 1 January 2014 +
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16:00:00, 1 January 2014 +
At 11:00 EST on Wednesday, January 1, 2014 … At 11:00 EST on Wednesday, January 1, 2014, during a scheduled functional test of the Cook Nuclear Plant (CNP) Technical Support Center (TSC) ventilation system, the following two dampers failed to properly open when the system was placed in emergency mode (ventilation flow directed through the emergency filtration unit):</br>12-HV-TSC-SD-5, TSC Ventilation Emergency Flow To & From Air Conditioner 12-HV-TSC-AC-1 Volume Damper</br>12-HV-TSC-SD-7, TSC Ventilation Emergency Filtration Unit 12-HV-TSC-FIL Inlet Volume Damper</br>The TSC ventilation system is therefore non-functional. This notification is being made in accordance with 10 CFR 50.72 (b)(3)(xiii) due to an emergency response facility being non-functional. Repair activities are in progress for repair of the two dampers.</br>Under certain accident conditions the TSC may become unavailable due to the inability of the air conditioning and charcoal filtration systems to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC personnel to the unaffected unit's control room if necessary. </br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATE FROM DAN KURTH TO CHARLES TEAL AT 0220 EST ON 1/2/14 * * *</br> After repairs were completed, the TSC was restored to service at 0130 EST on 1/2/14.</br>The licensee has notified the NRC Resident Inspector.ensee has notified the NRC Resident Inspector. +
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