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The inspectors reviewed a self-revealing N … The inspectors reviewed a self-revealing NCV of Technical Specification 5.4.1.a for the failure to implement a boric acid system procedure. As a result, an emergency boration flow path was isolated. The licensee entered the finding into the corrective action program as Condition Report CR-2011-000590. The finding was more than minor because it was associated with the human performance attribute of the mitigating systems cornerstone and adversely affected the cornerstone objective to ensure the availability of systems that respond to initiating events to prevent undesirable consequences. Specifically, an emergency boration flow path was inadvertently isolated. Using IMC 0609, Attachment 4, Phase 1 - Initial Screening and Characterization of Findings, the finding was determined to represent an actual loss of safety function of non-technical specification equipment designated as risk-significant per 10 CFR 50.65 for greater than 24 hours. Therefore, the finding was determined to require an Appendix A significance determination process Phase2 analysis. The inspectors determined that, for evaluation purposes, a total failure of emergency boration capability bounded the event. The inspectors evaluated the finding using the Phase2 pre-solved table for operator fails to initiate emergency boration. Since the flow path was isolated from January 17 to January 18, 2011, the inspectors used the less than three days section of the table for evaluating the finding and determined the finding was of very low safety significance. The finding has a human performance crosscutting aspect associated with work practices because licensee personnel proceeded in the face of unexpected circumstances and did not consult supervision (H.4 (a)).and did not consult supervision (H.4 (a)). +

Discovered date

23:59:59, 31 March 2011 +

Docket

05000445 + and 05000446 +

Event date

23:59:59, 31 March 2011 +

Finding integer

1 +

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) +

INPO aspect

QA.4 +

Identified by

Self-revealing +

Inspection Manual Chapter

NRC Inspection Manual 0609 +

Inspection procedure

IP 71111.04 +

Inspection report

IR 05000445/2011002 +

Inspector

D Stearns +, Brian Tindell +, Louis Carson +, John Kramer + and Webb Patricia Walker +

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>.

19:04:44, 30 September 2017 +

Person