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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
O.D. Cooling Water Corrosion in Slurry Bundle
chronicle companion images
IMAGE #1
Fixed Tube Sheet View of Straight Tube Bundle
Recent failures which launched RCFA
IMAGE #2
Severe O.D. Corrosion – Cooling Water Corrosion
O.D pitting of 65% depth
IMAGE #3
Multiple Pit Initiation Sites
Note: Numerous initiation sites along tube axis
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IMAGE #4
IMAGE #5
Tube Support Location
Corrosion cells adjacent to supports
IMAGE #6
Thick/friable cooling water deposits on support structure
Additional Images
INSPECTION PHOTOS
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