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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
chronicle companion images
Turbine Failure in Recuperative Heater "A & B"
IMAGE #1 Tubesheet Map
IMAGE #2
Side View of Exchanger & Corrosion Location
Detubing Baffle
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IMAGE #3
3D images of the exchanger representing views
illustrative of the corrosion issues
PHOTO #1
Discoloration of the Tubing in the Affected Zone
(Top 2 Tubes)
PHOTO #2
Close up of failure site located at the 2nd baffle the north tubesheet. The round shape of the through wall failure is indicative of a corrosive force.
Hole which was aligned at the top edge of the tube axis.
(Note: Acid corrosion outline adjacent to the hole.)
PHOTO #3
Close up of failure site located
at the 1st baffle at the north tubesheet.
PHOTO #4
Hole which was Aligned at the Top Edge of the Tube Axis
PHOTO #5
Another Example of hole which was aligned at the top edge of the tube axis.
(Note: Acid corrosion outline adjacent to the hole.)
PHOTO #6
Note: Striations formed emanating from the hole indicative of acidic process stream.
Additional Views
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INSPECTION PHOTOS
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