Before a North Dakota wheat farmer discovered an oil spill on his land on Sept. 29, the owner of the pipeline had used a high-tech device to detect problems on the line. San Antonio-based Tesoro ...

Baker Hughes has acquired Cornerstone Pipeline Inspection Group, a privately held company that owns a fleet of so-called "smart pigs" for doing pipeline inspections. In this case, the pigs are not ...

Last year Kirkland, Wash.-based National Energy Systems Company (NESCO), operator of the gas-fired Sumas 1 cogeneration plant in Whatcom County, Wash., conducted an extremely thorough examination of ...

They may not say "oink" or eat from a trough, but Pacific Gas and Electric Co. officials hope the company's "Smart Pig" pipe inspections will help save their bacon. A robotic "Smart Pig," made and ...

An in-line inspection device called a smart pig deploys nonlinear harmonic (NLH) sensors against the inside surface of a pipe. Fluid flow propels the pig through the pipeline. The sensors look for ...