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
Inspection Criteria of Tubes to Inspect
chronicle companion images
FIGURE#2
INSPECTION SCHEMES: Random - "Shot Gun"
FIGURE#3
INSPECTION SCHEMES: Cross - "X Pattern"
FIGURE#1
A SIMPLE TRUTH: Correlation Doesn't Imply Causation
FIGURE#4
INSPECTION SCHEMES: Line Type
FIGURE#5
WEIBULL CHART: Heat Exchanger Failures
