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
Organic Acids/Salts in Atmospheric Crude Unit
chronicle companion images
IMAGE #2
I.D Condition of Tubing
I.D Condition of Tubing
IMAGE #3
Tube & Support Condition away from Corrosion Zone
IMAGE #1
Bundle
IMAGE #4
Isolated & Interconnected Pit Sites
IMAGE #5
View of Top Periphery U-bends adjacent to Inlet Piping
IMAGE #6
Isolated Deep Pitting
Isolated Deep Pitting
IMAGE #7
Severe Corrosion with Depths to 70%
Location is 2nd Row into Bundle Matrix at U-bends
Severe Corrosion
IMAGE #8
Pitting at U-bends 40% Depth
40% Depth
IMAGE #9
Top Half of Bundle adjacent to Shell Side Inlet
Note General Corrosion to U-bends
General Corrosion
IMAGE #10
Light Etching near Center of Bundle
IMAGE #11
Area of Most Severe Corrosion
