The 12” line had suffered from internal wall loss.
12 Inch Methane Line

The 12” line had suffered from internal wall loss.
The 2 x 4” elbows had suffered from internal erosion.
The 55” Caisson drain line suffered from protective coating breakdown
The 40” line had suffered from internal corrosion
The 36” line had suffered from external and internal corrosion
The 36” line had suffered from internal and some external corrosion
The 8” line had suffered from internal corrosion over a 2 metre section
The 24” line had suffered from external corrosion at different points on the pipeline which was repaired with composites
The 18” seawater line had suffered from internal erosion just above the weld.
The 30” line had suffered from external corrosion.