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As we move to shorter outages, our leadership team is looking to optimize our resources as much as possible. Our procedure allows for snubber testing to begin no earlier than 60 days prior to a scheduled outage. They are discussing the possibility of utilizing LCO 3.0.8 (Not sure if this is the same across plants) to remove and test snubbers online. I was wondering if any other plants have done something similar to this and started testing their snubbers online, prior to the scheduled outage?
Note: We would immediately replace the snubber that was removed with a rebuilt, pre-tested snubber which would take out the question of operability of the system that the snubber was associated with.
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TVA does not, but I know others have stated that they do this. Some test immediately after pulling others wait to test until the outage starts. Two of the three sites do visuals, but one site won’t even do visuals on line.
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Hatch has been doing this for years.It is becoming more common as sites more to single train or single Division outages.
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Mitch,
I emailed you about getting some additional information on this.
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GGNS does, the 60 days is from the ASME code, contact Micheal Orcutt at GGNS, he can give you the details on how they moved to online drop and swaps. he is listed in the member center directory. ANO will be moving to this as well, once we get TRM’s and Operations happy for both units.
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