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The team identified a non-cited violation … The team identified a non-cited violation of 10 CFR 50, Appendix B, Criterion III, Design Control, for the licensees failure to verify or check the adequacy of design of the plant service water system including the pump discharge check valves allowable backleakage. As a result, the licensee entered the issue into their corrective action program as condition report 481741, performed an immediate determination of operability, and placed administrative control over the river level at which the pumps are declared inoperable to a level higher than the one specified in the plants technical specifications until more detailed analyses could be performed. The limit was reduced back to the original technical specification level following the results of the analysis. The failure to verify the adequacy of the plant service water system design through calculational methods or through a suitable test program as required by 10 CFR 50, Appendix B, Criterion III, was a performance deficiency. The performance deficiency was more than minor because it affected the Mitigating Systems Cornerstone attribute of design control and adversely affected the cornerstone objective of ensuring the reliability, availability and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the licensee did not implement a suitable test program to verify design inputs and ensure the capability of the system. The inspectors used Inspection Manual Chapter 0609, Att. 4, Initial Characterization of Findings, for mitigating systems and Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, and determined the finding to be of very low safety significance (Green) because the finding was a design control deficiency issue that did not result in a loss of operability or functionality of the PSW system. The performance deficiency was indicative of current licensee performance since the system hydraulic model was verified in 2011, and was directly related to the complete documentation and labeling cross-cutting aspect of the resources component in the area of human performance because the licensee did not have accurate design documentation for the potential pump discharge check valve leakage that could cause reverse rotation of the pumps.could cause reverse rotation of the pumps.

Discovered date

23:59:59, 30 September 2012 +

Docket

05000321 + and 05000366 +

Event date

23:59:59, 30 September 2012 +

Finding integer

2 +

Finding type

Non-cited violation +

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INPO aspect

WP.3 +

Identified by

NRC identified +

Inspection Manual Chapter

NRC Inspection Manual 0609 + and NRC Inspection Manual 0609/Appendix A, The Significance Determination Process (SDP) for Findings At-Power +

Inspection procedure

IP 71111.21 +

Inspection report

IR 05000321/2012008 +

Inspector

M Yeminy +, R Nease +, J Rivera-Ortiz +, P Wagner +, Geoffrey Ottenberg +, Marcus Riley +, Shane Sandal +, Natasha Childs + and Jermaine Heath +

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>.

00:47:29, 21 February 2018 +

Person