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05000255/FIN-2011003-04
Show incoming properties 
Category
Finding
Cornerstone
Initiating Events +
Description
The inspectors identified an Unresolved It … The inspectors identified an Unresolved Item (URI) for failure of the turbine-driven auxiliary feedwater (TDAFW) pump during a surveillance test on May 10, 2011. Specifically, the overspeed trip device actuated for no apparent reason, shutting the pump down. On May 10, 2011 the licensee was operating the TDAFW pump for a surveillance test. Approximately 3 minutes into the test run, the trip lever became unseated from the knife edge, resulting in closure of the trip valve. By design, the trip lever is part of the mechanical overspeed trip. The licensee validated that an overspeed condition did not exist by independent means including feedflow and shaft speed. In addition, the licensee ruled out human error; i.e. operator contact with the trip mechanism. The licensee discovered improper application of grease on the knife edge from an earlier maintenance outage and believes the presence of the grease resulted in the pump trip. The licensee is performing an analysis to validate that greasing of the knife edge caused the pump trip. Pending completion of the report on the analysis of the trip lever and the licensees evaluation of the results, this issue will be classified as a URI. URI 05000255/2011003-04, Turbine-Driven Auxiliary Feedwater Pump Trip.bine-Driven Auxiliary Feedwater Pump Trip.  +
Discovered date
23:59:59, 30 June 2011  +
Docket
05000255  +
Event date
23:59:59, 30 June 2011  +
Finding
05000255/FIN-2011003-04 +
Finding integer
4  +
Finding type
URI +
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>.
05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +, 05000255/FIN-2011003-04 +...
Identified by
NRC identified +
Inspection procedure
IP 71111.15, Operability Determinations and Functionality Assessments +
Inspection report
IR 05000255/2011003 +
Inspector
R Walton +, J Cassidy +, A Scarbeary +, Kozakt Taylor +, John Ellegood +, Mel Holmberg +, Matthew Learn +, Jack Giessner +, Thomas Taylor +, J Beaversc +, Zoiaj Cassidy +  and L Rodriguezl +
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>.
00:42:49, 21 February 2018  +
Person
R Walton +, J Cassidy +, A Scarbeary +, Kozakt Taylor +, John Ellegood +, Mel Holmberg +, Matthew Learn +, Jack Giessner +, Thomas Taylor +, J Beaversc +, Zoiaj Cassidy +  and L Rodriguezl +
Quarter
2011Q2 +
Site
Palisades +
Start date
23:59:59, 30 June 2011  +
System
Auxiliary Feedwater +
Title
Turbine-Driven Auxiliary Feedwater Pump Trip  +
Topic
Overspeed trip +
 
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