If these pics are all from the same fuel assembly I would agree with Tom. It appears that when the camera lights hit the bottom nozzle at a certain angle you get reflection glare. Since it goes away at other angles it doesn't look real.
This doesn't appear to be anything real. You can clearly see the flow holes through the haze (purple haze?). I'm assuming the zoomed in photos are to show that nothing like saran wrap, etc. is actually under the assembly.....Tom
From: PWRRM [mailto:pwrrm-bounces@retaqs.com] On Behalf Of Hulvey, Kimberly Dawn Sent: Tuesday, March 28, 2017 8:56 AM To: 'pwrrm@retaqs.com' Subject: [EXTERNAL] [Pwrrm] question on fuel assembly bottom nozzle observation
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)
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