Two sections of an API 5L Grade B gas pipeline had suffered damage from external corrosion
50.8-mm (2-inch) diameter line was damaged over a 1,829-mm (6-ft) straight run of pipe
114.3-mm (4.5-inch) diameter line was damaged over a length of 2 m (6.56 ft) that extended along a straight run and an elbow
Corrosion had caused wall loss up to 51% on both lines
75.8 bar (1,100 psi) design pressure
25°C (77°F) design temperature.