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The inspectors identified a finding of ver … The inspectors identified a finding of very low safety significance (Green) and an associated NCV of TS 5.4.1.a, Procedures, associated with the licensees failure to properly implement Procedure FPWMMMP01, Minor Maintenance Process, Revision 5, while planning and performing maintenance on a steam exclusion barriertransom latch assembly. Specifically, on February 3, 2017, maintenance workers in coordination with the Fix-It-Now (FIN) Senior Reactor Operator (SRO) removed the lower latch assembly from a transom above Door 225 that rendered the steam exclusion barrier non-functional. Consequently, for an approximately five minute window during maintenance on the latch assembly, the 11 safeguards battery system was rendered inoperable with respect to a postulated turbine building High Energy Line Break (HELB) event. The licensee entered the issues into the Corrective Action Program (CAP) as CAPs 1548470 and 1549724.The inspectors determined that the licensees failure to properly implement procedure FPWMMMP01 as required by Technical Specification (TS) 5.4.1.a. was aperformance deficiency. The performance deficiency was determined to be more than minor and a finding in accordance with IMC 0612, Appendix B, Issue Screening, because it was associated with the Mitigating Systems Cornerstone attribute of Human Performance and affected the associated cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors applied IMC 0609, Attachment 4, Initial Characterization of Findings, to this finding. Since the inspectors answered No to all questions within IMC 0609, Appendix A, Exhibit 2, Mitigating Systems Screening Questions, the finding screened as very low safety significance (Green). The inspectors determined that the performance characteristic of the finding that was the most significant causal factor of the performance deficiency was associated with the cross-cutting aspect of Teamwork in the Human Performance cross-cutting area, and involved individuals and work groups not properly communicating and coordinating their activities within and across organizational boundaries to ensure nuclear safety was maintained. (H.4)sure nuclear safety was maintained. (H.4)

Discovered date

23:59:59, 30 June 2017 +

Docket

05000282 +

Event date

23:59:59, 30 June 2017 +

Finding integer

1 +

Finding type

Non-cited violation +

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INPO aspect

PA.3 +

Identified by

NRC identified +

Inspection Manual Chapter

NRC Inspection Manual 0609 +, NRC Inspection Manual 0612 Appendix B + and NRC Inspection Manual 0609/Appendix A, The Significance Determination Process (SDP) for Findings At-Power +

Inspection procedure

IP 71111.15, Operability Determinations and Functionality Assessments +

Inspection report

IR 05000282/2017002 +

Inspector

Billy Dickson +, John Bozga +, Michelle Garza +, Paul Laflamme + and Luke Haeg +

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>.

19:06:05, 30 September 2017 +

Person