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The inspectors reviewed a self-revealing n … The inspectors reviewed a self-revealing noncited violation of 10 CFR Part 50, Appendix B, Criteria V, Instructions, Procedures, and Drawings, for the failure to follow Procedure 0POP11-SI-0001, Safety Injection/Containment Spray Pump Online Isolation and Restoration, Revision 0. During the performance of a surveillance test on Unit 2 high head safety injection pump 2C, air was vented from the flushing line vent valve. The acceptance criterion was that no air be vented. The source of the air was from a maintenance activity performed August 16-19, 2010. During the maintenance, the equipment clearance order boundary was moved from the discharge valve to the subsequent downstream valve. As a result, during restoration it was not recognized that this new boundary introduced approximately 7 feet of vertical piping that could not be vented. Corrective actions included venting using a high point downstream of the boundary valve; ensuring that the station is aware of the procedure and the reason behind the creation of the procedure to address the Generic Letter 2008-01 concerns, so that impact of changes to the work scope can be appropriately controlled and evaluated; and changing the wording of the procedure to not allow moving the boundary outside of the discharge valve while at power. This finding was more than minor because it affected the Mitigating Systems Cornerstone attributes of Human Performance and Procedure Quality and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. This deficiency directly resulted in the high head pump containing a void in the system following maintenance after it was returned to an operable status. The inspectors performed the significance determination using NRC Inspection Manual Chapter 0609, Attachment 0609.04, Phase 1 Initial Screening and Characterization of Findings, dated January 10, 2008, because it affected the Mitigating Systems Cornerstone while the plant was at power. The finding was determined to be of very low safety significance because it was not a design or qualification deficiency; it did not result in the loss of a system safety function; it did not represent a loss of a single train for greater than technical specification allowed outage time; it did not represent a loss of one or more nontechnical specification risk-significant equipment for greater than 24 hours; and it did not screen as potentially risk significant due to seismic, flooding, or severe weather. In addition, this finding had human performance cross-cutting aspects associated with work control in that the licensee did not incorporate actions to address the impact of changes to the work scope.s the impact of changes to the work scope.
23:59:59, 31 March 2011 +
23:59:59, 31 March 2011 +
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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>.
19:06:29, 30 September 2017 +
23:59:59, 31 March 2011 +