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A finding and associated non-citied violat … A finding and associated non-citied violation of TS 5.4.1, Procedures, self-revealed pertaining to establishing and maintaining procedures to ensure reliable indication of reactor vessel level during reduced RCS inventory and vacuum fill operations. Specifically, the licensee failed to include in procedures for vacuum fill methods to ensure the level detection system sensing lines were vacuum tight. Although the licensee implemented some corrective actions prior to the scheduled vacuum fill evolution, the actions taken failed to prevent recurrence. During the vacuum fill evolution for Unit 2, the licensee made 2 attempts to draw vacuum because of diverging level indications. The additional time spent in reduced inventory as well as the additional drain down resulted in increased plant risk. As immediate corrective actions, the licensee corrected the leaking fitting, normalized level readings, and completed the vacuum fill evolution. The licensee has entered this issue into the CAP as AR 2013-18146. The inspectors concluded the finding was more than minor because it adversely affected the Initiating Event cornerstone objective of limiting the likelihood of events that upset plant stability while shutdown. Specifically, the issue impacted the Procedure Quality attribute. Based on the screening criteria of IMC 0609, the inspectors and regional SRA concluded a phase 2 or 3 evaluation was needed. Since the issue in Unit 2 was bounded by the phase 3 assessment performed for Unit 1, the inspectors and SRA concluded the finding was of very low safety significance, (Green). The finding included a cross-cutting aspect of P.3, Resolution, in the corrective action area because the licensee failed to implement corrective actions that prevented recurrence.rective actions that prevented recurrence. +

Discovered date

23:59:59, 31 March 2014 +

Docket

05000316 +

Event date

23:59:59, 31 March 2014 +

Finding integer

3 +

Finding type

Non-cited violation +

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INPO aspect

PI.3 +

Identified by

NRC identified +

Inspection Manual Chapter

NRC Inspection Manual 0609 +

Inspection report

IR 05000315/2014002 +

Inspector

M Bielby +, J Lennartz +, B Cushman +, David Reeser +, Kenneth Riemer +, John Ellegood +, Jasmine Gilliam +, Thomas Taylor + and Matthew Mitchell +

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>.

12:57:34, 25 September 2017 +

Person