Greg Palast reports that The (original) Keystone oil pipeline ruptured in 2022 (and caused a substantial oil spill) because of improper construction, which was not detected because the safety inspection tool's software had been modified so as to overlook "small" flaws in pipelines.

Palast says that such modification is a common practice. It seems that pipeline companies they have decided to ignore flaws that, although "small", can lead eventually to oil spills.