Pre-Outage Snubber Testing

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.


Entergy currently uses a qualification card for each specific program (IST, check valves, snubbers, etc) and management is looking into “streamlining” this and potentially eliminating qualification cards where possible. I am interested in if other utilities have done this for snubbers and if so what they have put in place (if anything).




Daniel Hearding

Central Programs Engineering

Office: 601-368-5426