提供了一个基本参考，用于整合设备制造商、服务和安装承包商、石油营销人员以及监管机构发布和未发布的有关正确检查和维护地下储罐（UST）系统的信息。推荐规程适用于在车辆加油设施中储存和分配汽油、柴油和相关石油产品的地下储罐和相关设备。所涵盖的设备包括所有地面以下、液体和蒸汽处理部件，这些部件可从储油罐顶部或附近以及加油机紧急切断阀下方的地面上接近。 PEI编写了本推荐规程，以促进地下储存系统的正确检查、操作和维护，提高地下储存罐设备的寿命和无故障性能，促进防火和储存系统安全，保护人类健康和环境，遵守监管规定，及早发现潜在的设备问题，并减少与地下存储系统运行相关的责任。

Provides a basic reference that consolidates published and unpublished information from equipment manufacturers, serivce and installation contractors, petroleum marketers, as well as regulatory agencies concerning the proper inspection and maintenance of underground storage tank (UST) systems. The recommended practice applies to underground storage tanks and associated equipment intended to store and dispense gasoline, diesel and related petroleum products at vehicle fueling facilities. The equipment covered includes all below-grade, liquid- and vapor-handling components accessible from grade over or near the top of the storage tank and below the emergency shutoff valve at the fuel dispensers.PEI has written this recommended practice to promote proper inspection, operation and maintenance of underground storage systems, to enhance the longevity and trouble-free performance of underground storage tank equipment, to promote fire preventions and storage system safety, protection of human health and the environment, regulatory compliance and early identification of potential equipment problems, and to reduce liability associated with the operation of underground storage systems.