The largest oil and natural gas producer in the EU, the United Kingdom retains proven crude oil reserves of around 4 billion barrels and proven natural gas reserves of some 18.8 Tcf as of 2006. Containing the bulk of domestic reserves and an extensive network of subsea pipelines and infrastructure, the UK Continental Shelf (UKCS) is the most active offshore region for the UK's oil and gas sector, and industry giants Shell, ExxonMobil, Chevron and Total all explore and produce there. The third largest global energy company and headquartered in the UK, BP is operator of such major offshore UK producers as the Foinaven and Forties fields.
Maintenance engineers apply engineering concepts in order to achieve better maintainability and reliability of machinery and equipment in the most efficient ways possible. They will use statistics, probability and logistics to solve problems, as well as use lean six sigma principles in order to optimize the maintenance process. Maintenance engineers have a number of responsibilities including conducting periodic inspections, performing system upgrades and changes, troubleshooting equipment issues and determining when repair and replacements need to take place. Maintenance engineers generally have a bachelor’s degree in engineering or applied science, and can be found in almost every aspect of the oil and gas industry.