Browse wiki

The inspectors reviewed a self-revealing f … The inspectors reviewed a self-revealing finding involving failure to verify that the proper material was installed in the plant during initial construction of the Unit 2 reactor coolant system (RCS) sample system. Specifically, failure to use the correct material resulted in two through-wall leaks in the supply line to the 2E30 cooler for the RCS sample system. The licensee removed the components with the incorrect material and installed components of the correct material. This issue was entered into the licensees corrective action program as Condition Report CR-ANO-C-2014-01800. The failure to verify the correct materials were installed in the plant is a performance deficiency. This performance deficiency is more than minor because it is associated with the equipment performance attribute of the Initiating Events Cornerstone and affects the cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as during power operations. Specifically, failure to install the correct material resulted in failure of the RCS sample system and the inability to meet technical specification requirements for determining dose equivalent Xenon-133. Using NRC Inspection Manual Chapter 0609, Appendix A, Exhibit 1, Initiating Event Screening Questions, the inspectors determined the finding is of very low safety significance (Green) because the transient initiator did not cause a reactor trip and the loss of mitigating equipment. This finding has not been assigned a cross cutting aspect because the incorrect material was installed during initial construction, and is not indicative of current plant performance.t indicative of current plant performance. +

Discovered date

23:59:59, 30 June 2015 +

Docket

05000368 +

Equipment trip

Reactor Trip +

Event date

23:59:59, 30 June 2015 +

Finding integer

3 +

Finding type

Finding +

Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.

Identified by

Self-revealing +

Inspection Manual Chapter

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

Inspection procedure

IP 71111.08 +

Inspection report

IR 05000313/2015002 +

Inspector

James Drake +, M Phalen +, N O'Keefe +, Brian Tindell +, Louis Carson +, Matt Young +, Zachary Hollcraft + and Mike Williams +

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>.

04:22:45, 22 February 2018 +

Person