CNN

Last year’s Keystone Pipeline shutdown was due to bending stress on a pipe and a weld flaw, company says

A leak of nearly 13,000 barrels of crude oil from the Keystone Pipeline near the Kansas-Nebraska border last year was caused by a flawed weld and stress on the pipe from being bent, the operator said.
UPI

TC Energy: Keystone Pipeline leak caused by welding flaw, bending stress

Feb. 10 (UPI) --A massive oil spill from the Keystone Pipeline in northern Kansas in December was caused by a welding flaw and bending stress fatigue, TC Energy Corp said in its initial investigation ...
WIBW

Bending stress, weld flaw cause of Kansas Keystone oil spill

WASHINGTON CO., Kan. (WIBW) - Bending stress coupled with a weld flaw has been blamed for an oil spill in the Keystone pipeline that released 14,000 barrels of oil into Washington Co.’s Mill Creek in ...
Oil

New method sets concrete coating’s effect on pipeline stiffness, stress

The thickness of concrete coating on a large-diameter offshore pipeline may be up to eight times the wall thickness of its steel pipe, requiring that its effects on the stiffness, stresses, and ...