An Advanced Approach to Fitness-For-Service (FFS) and Corrosion ...

Dent / Deformation Anomalies – DOT Requirements
Position of
Feature on
Pipeline
Top of line
(above 4-8
o’clock)
Bottom of line
(between 4-8
o’clock)
On Girth
Weld/Seam
Weld
Priority 1 - Immediate Priority 2 – 60 day Priority 3 – 180 day
Repair
Condition
Depth
>6%OD or
With
associated
metal loss,
cracking or
stress riser
Number of
Features
32
N/A N/A
Repair
Condition
Depth
>3%OD
With
associated
metal loss,
cracking or
stress riser
Number of
Features
2
89
N/A N/A N/A N/A
Repair
Condition
Depth
>2%OD
Depth
>6%OD
Depth
>2%OD
TOTAL 32 91 4
Number of
Features
4
0
0