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An NRC-identified Green NCV of 10 CFR Part … An NRC-identified Green NCV of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, was identified for PPL\'s failure to correct excessive seat leakage associated with the Unit 1 D outboard MSIV, HV141F028D, such that the leakage was in excess of the Technical Specification (TS) allowed value for two consecutive tests. Specifically, work instructions to perform maintenance and post-maintenance testing on the valve following a local leak rate test (LLRT) failure in 2010 were inadequate to ensure the CAQ was corrected. PPL subsequently entered the issue into the CAP as CRs 1554813 and 1590506. The finding was determined to be more than minor because it was associated with the SSCs and barrier performance attribute of the Barrier Integrity cornerstone and affected its objective to provide reasonable assurance that physical design barriers (fuel cladding, reactor coolant system, and containment) protect the public from radionuclide releases caused by accidents or events. The inspectors assessed the finding to be of very low safety significance (Green) because it did not represent a degradation of the barrier function of the control room, did not represent an actual open pathway in the physical integrity of reactor containment, and did not involve the actual reduction in function of hydrogen igniters in containment. This finding has a cross-cutting aspect in the area of Human Performance, Resources, because PPL did not ensure that personnel, equipment, procedures, and other resources were available and adequate to assure nuclear safety. Specifically, the instructions used to perform maintenance and testing on the MSIVs were inadequate to ensure that excessive seat leakage was corrected.that excessive seat leakage was corrected. +

Discovered date

23:59:59, 30 June 2012 +

Docket

05000387 + and 05000388 +

Event date

23:59:59, 30 June 2012 +

Finding integer

2 +

Finding type

Non-cited violation +

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WP.3 +

IR 05000387/2012003 +

Inspector

Paul Krohn +, Patrick Finney +, Ronald Rolph +, H Gray +, S Hansell +, Allyce Bolger +, Jonathan Greives + and Thomas Burns +

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>.

00:45:37, 21 February 2018 +

Person