本欧洲标准连同第1部分，涉及水平定向钻井设备（HDD）的所有重大危险，当其按预期使用时，以及在制造商可合理预见的与机器整个使用寿命相关的误用情况下（见第4条）。 本部分的要求是对EN 16228-1:2014+A1:2021中制定的通用要求的补充。 本文件不重复EN 16228-1:2014+A1:2021中的要求，但增加或取代了水平定向钻的应用要求。 如果机器设计成浅弧钻孔以安装管道、导管和电缆，并且通常具有相对于地球工作表面小于45°的钻柱进入角，则机器被视为水平定向钻。

This European Standard, together with part 1, deals with all significant hazards for horizontal directional drilling equipment (HDD) when they are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer associated with the whole life time of the machine (see Clause 4). The requirements of this part are complementary to the common requirements formulated in EN 16228-1:2014+A1:2021. This document does not repeat the requirements from EN 16228-1:2014+A1:2021, but adds or replaces the requirements for application for horizontal directional drills. A machine is considered a horizontal directional drill if it is designed to drill in a shallow arc for the installation of pipes, conduits, and cables and typically has a drill string entry angle of less than 45° relative to the operating surface of the earth.