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On March 29, 2016 at 2256 (EDT), Secondary … On March 29, 2016 at 2256 (EDT), Secondary Containment Zone 2 (Unit 2 Reactor Building) differential pressure lowered to 0.0 (inches) WG (water gauge) due to a failed closed discharge damper on the in service Zone 2 exhaust fan. Required differential pressure per SR 3.6.4.1.1 could not be maintained. Zone 2 ventilation was restored by starting the standby Zone 2 exhaust fan. Zone 2 differential pressure recovered to (greater than) 0.25 (inches) WG at 2321 hours. Zone 3 (Unit 1&2 Reactor Buildings) ventilation remained in service and stable. Zone 1(Unit 1 Reactor Building) ventilation remained in service however it is not required in this mode of Operation.</br>This event is being reported under 10 CFR 50.72(b)(3)(v)(C) and per the guidance of NUREG 1022 Rev 3 section 3.2.7 as a loss of a Safety Function. There is no redundant Susquehanna Secondary Containment System.</br>The licensee has notified the NRC Resident Inspector.ensee has notified the NRC Resident Inspector. +
02:56:00, 30 March 2016 +
51,830 +
02:13:00, 30 March 2016 +
02:56:00, 30 March 2016 +
On March 29, 2016 at 2256 (EDT), Secondary … On March 29, 2016 at 2256 (EDT), Secondary Containment Zone 2 (Unit 2 Reactor Building) differential pressure lowered to 0.0 (inches) WG (water gauge) due to a failed closed discharge damper on the in service Zone 2 exhaust fan. Required differential pressure per SR 3.6.4.1.1 could not be maintained. Zone 2 ventilation was restored by starting the standby Zone 2 exhaust fan. Zone 2 differential pressure recovered to (greater than) 0.25 (inches) WG at 2321 hours. Zone 3 (Unit 1&2 Reactor Buildings) ventilation remained in service and stable. Zone 1(Unit 1 Reactor Building) ventilation remained in service however it is not required in this mode of Operation.</br>This event is being reported under 10 CFR 50.72(b)(3)(v)(C) and per the guidance of NUREG 1022 Rev 3 section 3.2.7 as a loss of a Safety Function. There is no redundant Susquehanna Secondary Containment System.</br>The licensee has notified the NRC Resident Inspector.ensee has notified the NRC Resident Inspector. +
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00:00:00, 30 March 2016 +
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>.
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02:56:00, 30 March 2016 +
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