Gramercy Works Report of Investigation

APPENDIX R

Thickness Measurements of Failed Vessels



 

The following chart indicates the average measured values.

Vessel

Component

Original
Thickness
(inches)

Post-Failure
Thickness
(inches)

Flash Tank 6

hemi-head

0.544

0.515

Flash Tank 7

hemi-head

0.3125

0.2734

 

upper ring

0.527

0.47

 

lower ring

0.571

0.5

 

bottom cone

0.642

0.56

Flash Tank 8

hemi-head

0.318

0.27

 

upper ring

0.625

0.5625

 

lower ring

0.659

0.57

 

bottom cone
upper

0.75

0.703

 

bottom cone
lower

0.75

0.25
.125 (local area)

Flash Tank 9

hemi-head

0.318

0.27

 

upper ring

0.625

0.563

Blow-Off Tank

hemi-head

0.25

0.21

 

upper ring

0.25

0.21

 

lower ring

0.25

0.22

 

bottom cone

0.25

0.19