Working mostly for utilities companies in the oil and gas industries, pipeline inspectors oversee the professionals who construct and maintain pipeline systems. They also check these systems for potential problems. Working with a construction crew and other engineers, they examine pipeline systems for faults such as leaks and corrosion, make suggestions to improve systems, and monitor the construction crew to ensure their safety and improve their quality of work. Pipeline inspectors do physical work outdoors that requires strong computer skills, adherence to detailed engineering practices, and an understanding of the ins and outs of pipeline systems. This role can require long hours with some night and weekend shifts.