That looks like some kind of weird combination of a reflection and difficulty focusing. I agree, it’s not a problem with the fuel. You might be able to eliminate this with a lighting adjustment. It is not
unusual to see strange artifacts on these digital cameras. It also might be a problem with the thermals adjustment, if you have that feature on your camera. I love the thermals adjustment when doing ID verification in the core, but it can do some weird things.
Damon Bryson
VC Summer Nuclear Station
dbryson@scana.com
803-345-4814
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During our refueling outage fuel assembly inspections, we noticed something unusual in a number of periphery fuel assemblies removed from the core. We initially thought it was some type of debris and were going to attempt removal. Upon
further inspection, the ‘marking’ is only seen at certain angles of viewing – it looks like a haze. Since we have seen this on more than one assembly, we don’t think it is camera distortion or camera focusing issues. When we zoon in and look at the flow
holes better, we do not see any obstruction so we are currently planning to reuse these assemblies. Just curious if anyone had ever seen anything similar. Pictures are attached.
Thank you in advance for your response and help.
Kim Hulvey
WBN Reactor Engineering Manager
423-365-7720 (office)
931-581-5423 (cell)