本标准介绍了为钢制储水箱内通常浸入水中的钢表面提供电偶阳极阴极保护（CP）的实践。它为业主、工程师和承包商提供了将CP应用于钢制储水箱水下表面的标准实践；确定这些CP系统的有效性；以及这些CP系统的操作和维护。本标准适用于市政供水和消防用各种尺寸的钢制储水箱，包括地平面的高架水箱和平底水箱。尽管本标准中的实践通常适用于所有此类储罐，但本标准中所述的原阳极阴极保护系统可能不适用于阴极保护电流需求大的储罐。

This standard presents the practices used in providing galvanic anode cathodic protection (CP) to the normally submerged steel surfaces inside steel water storage tanks. It provides owners, engineers, and contractors a standard practice for the application of CP to the submerged surfaces of steel water storage tanks; for determining the effectiveness of these CP systems; and for the operation and maintenance of these CP systems.This standard is applicable to steel water storage tanks of various sizes used in municipal water supply and fire protection, including elevated tanks and flat-bottom tanks at ground level. Although the practices presented in this standard generally are applicable to all such tanks, the galvanic anode CP system described in this standard may not be practical for tanks with large CP current demands.