根据EN ISO 6165:2006的规定，prEN 474的这一部分涉及与管道铺管机有关的所有重大危险，危险情况和事件，并在制造商合理预见的情况下（如第4条）被误用的条件下使用。 这部分的要求是对所制定的共同要求的补充 prEN 474-1:2017。 该部分不重复prEN 474-1:2017的要求，但增加或替代了管道铺设机的应用要求。 本部分规定了适当的技术措施，以消除或减少管道铺设机调试，运行和维护过程中的重大危险，危险情况和事件引起的风险。 本部分规定了后装式绞车的附加要求。 具有旋转上部结构的管道不在本文档的范围之内。本欧洲标准不适用于CEN颁布本欧洲标准之日前制造的管道铺管机

This document, together with EN 474 1:2022, deals with all significant hazards, hazardous situations and events relevant to pipelayers as defined in 3.1, when used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A) associated with the whole lifetime of the machine as described in EN ISO 12100:2010, 5.4. The requirements of this document are complementary to the common requirements formulated in EN 474 1:2022. This document does not repeat the requirements of EN 474 1:2022 but supplements or modifies the requirements for pipelayers. This document also specifies additional requirements for rear mounted winches. This document does not provide performance requirements for safety related functions of control system(s). The following significant and relevant hazards are not covered in this document: — Transmission of power between self-propelled machinery (or tractor) and recipient machinery; — Laser; — Lightning. Pipelayers with rotating upper structure are excluded from the scope of this document. This document is not applicable to pipelayers manufactured before the date of publication of this document by CEN.