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The team identified a performance deficien … The team identified a performance deficiency and Green NCV for failing to implement a maintenance program for the backup batteries for the Halon 1301 system for the emergency switchgear rooms to ensure on a continuing basis that 24-hour backup power was available as required by the fire protection program (FPP) and Units 1 & 2 Operating License Condition 3.I, Fire Protection. The licensee entered this finding into their corrective action program, and demonstrated that the backup battery had sufficient capacity in the short term until the long term corrective actions can be implemented. The licensees failure to implement a maintenance program to help ensure that the backup battery for the Halon 1301 system continued to meet its licensing basis requirement of providing backup power for 24 hours is a performance deficiency. The finding is more than minor because the backup battery actually degraded on several occasions in the past, and the finding is associated with the reactor safety, mitigating systems, cornerstone attribute of protection against external factors, and affected the objective of ensuring reliability and capability of systems that respond to initiating events. The finding was determined to be of very low safety significance because it represented a low degradation of the fixed fire suppression systems. A cross-cutting aspect was not identified in relation to this finding since the cause was not representative of current license performance representative of current license performance +

Discovered date

23:59:59, 30 June 2009 +

Docket

05000280 + and 05000281 +

Event date

23:59:59, 30 June 2009 +

Finding integer

3 +

Finding type

Non-cited violation +

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Hours

2.777778e-4 d (0.00667 hours, 3.968254e-5 weeks, 9.132e-6 months) +

IR 05000280/2009007 +

Inspector

N Merriweather +, P Fillion +, R Nease +, Ladonna Suggs + and Keith Miller +

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>.

00:38:59, 29 October 2017 +

Person