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10 CFR 50.55a requires inservice tests (1S … 10 CFR 50.55a requires inservice tests (1ST) to verify operational readiness of pumps. whose function is required for safety, be performed in accordance with the Code. American Society of Mechanical Engineers (ASME) OMb Code-2000 Addenda to ASME OM Code-1998 requires that when a pump test reference value may have been affected by repair, replacement. or routine servicing of ~ pump, a new reference value or set of values shall be determined or the previous reference value shall be reconfirmed. Further, TS 6.8.1 requires that written procedures shall be established and implemented as recommended by Regulatory Guide 1.33. Revision 2. Appendix A to Regulatory Guide 1.33 requires, in part, that procedures for performing maintenance that can affect the performance of safety-related equipment be properly pre-planned and performed in accordance with written instructions appropriate to the circumstances. Station procedure MA-AA-716-012, Post Maintenance Testing (PMT), Rev. 12, requires PMT be performed following maintenance activities on plant eql,lipment that may have impacted the equipment\'s ability to perform its intended function. Contrary to the above, in December 2009. following maintenance (hydrolasing) on nuclear river (NR) pump discharge piping, which affected NR system flow characteristics and NR pump 1ST reference values, appropriate PMT work instructions were not established or implemented to reestablish new 1ST reference values for NR-P-1A or NR-P-1C. Consequently, station personnel incorrectly concluded NR-P-1A was inoperable, removed NR-P-1A from service, and replaced the pump in November 2010. This finding was more than minor because it was associated with the equipment performance attribute of the mitigating systems cornerstone and affected the availability of NR-P-1A to respond to an initiating event to prevent undesirable consequences. The licensee entered the condition into their corrective action program (lR 1089599) and took immediate corrective actions to revise 1ST reference values for NR-P-1A and NR-P-1C. reference values for NR-P-1A and NR-P-1C.

Discovered date

23:59:59, 31 March 2011 +

Docket

05000289 +

Event date

23:59:59, 31 March 2011 +

1 +

Non-cited violation +

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Identified by

Licensee-identified +

Inspection report

IR 05000289/2011002 +

Inspector

David Kern +, R Bellamy +, Javier Brand +, N Lafferty + and Justin Heinly +

Issue report

AR 01089599 +

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15:41:52, 30 May 2018 +

Person