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PHOTO #4 Removed tube sample
NOTE: Failure in tube
PHOTO #4
Bottom Half - Note Minimal Corrosion
Liquid
PHOTO #5 Severe groove depth adjacent
to edge of support
PHOTO #6
PHOTO #7
PHOTO #8
PHOTO #5
Top Half - Note Corrosion
PHOTO #6
Bottom Half - Note Minimal Corrosion
PHOTO #7 Cross Section
Tube split to show top & bottom
-
Left & right sides show minimal corrosion. Liquid covered.
-
Inner left & right (top circumference of tube) show heavy corrosion. Liquid/Vapor.
PHOTO #8
Top Half - Note Corrosion
Unexpected Tube Failure in
HDS Stripper OVHD Air Cooler
chronicle companion images
PHOTO #2
NOTE: Close up of Failure
PHOTO #1
Top half of tube looking at failure
PHOTO #3
Top Half of Tubing - Note Corrosion
Liquid/Vapor
Flow Induced
Vibration
chronicle companion images
GRAPHIC #1
Examples of Vortex shedding
(wind used as process stream)
GRAPHIC #2
Cross flow Buffeting (Node = Support locations)
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PHOTO #1
Fretting at support location. Note – Surface of removed tube wall has contours of support bar. This would indicate a significant axial movement of the oscillatory pattern.
PHOTO #2
Fretting at support bar
PHOTO #3
INSPECTION PHOTOS
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