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A self-revealing finding of very low safet … A self-revealing finding of very low safety significance (Green) and associated NCV of TS 5.4.1.a, Procedures, was identified when Susquehanna failed to implement procedures for loading EDGs promptly following extended unloaded operation. Specifically, Susquehanna did not load the B EDG promptly following over 6 hours of unloaded operation which resulted in the slow starting time during the subsequent surveillance test due to insufficient fuel delivery caused by clogged fuel injectors. The failure was entered into the CAP as CR-2016-13220 and the EDG was run loaded for an extended period to ensure any unburned fuel had been removed from the machine. The finding was more than minor because it was associated with the Equipment Performance attribute of the Mitigating Systems Cornerstone and affected the objective to ensure the reliability of systems that respond to initiating events to prevent undesirable consequences (i.e. core damage). Specifically, the failure to load the B EDG following extended operation unloaded resulted in the slow starting time of the EDG during subsequent surveillance testing due to clogged fuel injectors. The inspectors evaluated the finding in accordance with Exhibit 2 of IMC 0609, Appendix A, The SDP for Findings At-Power, dated June 19, 2012 and determined that it was of very low safety significance (Green) because it did not affect the design or qualification of the EDG, did not represent a loss of system function, and did not represent a loss of a single train for greater than its TS allowed outage time. The finding is related to the cross-cutting area of Human Performance, Consistent Process, because Susquehanna did not use a consistent, systematic approach to make decisions which incorporated risk insights. Specifically, Susquehanna did not appropriately coordinate the loaded run of the B EDG with maintenance on the C EDG to ensure B EDG availability was not unnecessarily challenged.lability was not unnecessarily challenged. +

Discovered date

23:59:59, 30 June 2016 +

Docket

05000387 + and 05000388 +

Event date

23:59:59, 30 June 2016 +

Finding integer

3 +

Finding type

Non-cited violation +

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Hours

6.944444e-5 d (0.00167 hours, 9.920635e-6 weeks, 2.283e-6 months) +

INPO aspect

DM.1 +

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 71111.22 +

Inspection report

IR 05000387/2016002 +

Inspector

Peter Meier +, E Gray +, J Grieves +, N Embert +, C Graves +, Daniel Schroeder +, Travis Daun + and Louis Dumont +

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>.

02:52:54, 13 October 2017 +

Person