API 2611涵盖了终端边界内典型终端管道系统的检查，包括场外管道。场外管道包括但不限于设施之间的管道、来自或通往炼油厂或其他类型设施的管道，或可能穿过道路、沟渠或终端设施范围外的其他财产的管道。汽油、柴油、润滑油、喷气燃料和航空燃料等成品燃料运输管道包含在本文件范围内。还包括非燃料型流体的管道系统。其他终端非燃料类流体的管道通常位于终端，包括沥青产品、工艺用水、transmix、污水和生物燃料。 本文件的范围不包括炼油厂设施中的管道、生活污水管道、铸铁管道和非金属重力流管道系统。

API 2611 covers the inspection of typical terminal piping systems within terminal boundaries, which includes off-plot piping. Off-plot piping includes, but is not limited to piping between facilities, piping that comes from or goes to a refinery, or other type facility, or piping that may cross a road, ditch or other property outside the confines of a terminal facility.Piping for transportation of finished fuel products such as gasoline, diesel, lubricating oils, jet fuel and aviation fuel are covered by the scope of this document. Also covered are piping systems for nonfuel-type fluids. The piping for other terminal nonfuel-type fluids typically found in terminals, include asphaltic products, process water, transmix, slop water and biofuels.The scope of this document does not include piping in a refinery facility, sanitary waste piping, cast iron piping and nonmetallic gravity flow piping systems.