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)
