Throughout this recommended practice, reference is made to areas, spaces, and locations. These terms should be considered interchangeable terms designating a three-dimensional space.

API RP 500, Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2, Third Edition, December 2012, Global Standards


The point at which a well is to be drilled. Also referred to as “wellsite.”

Source: API RP 54, Recommended Practice for Occupational Safety for Oil and Gas Well Drilling and Servicing Operations, Third Edition, August 1999 (2007). Global Standards



A geographical site, area, country or region where an activity is taking place or an asset is situated.

Source: IOGP Report No. 510, Operating Management System Framework for controlling risk and delivering high performance in the oil and gas industry, International Association of Oil & Gas Producers, June 2014. Global Standards



Location means a block or blocks in relation to which a declaration under section 131 is in force.

Source: Offshore Petroleum and Greenhouse Gas Storage Act 2006, Australia, amended 2012. Legislation



Location: the route, depth and stability.

Source: Mining Decree of the Netherlands, Netherlands, 2003 (as amended in 2007).  Legislation

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