ISO 14122-3:2016给出了作为固定机器一部分的非动力楼梯、阶梯和护栏的要求，以及这些固定通道的非动力可调部件（例如可折叠、可滑动）和可移动部件的要求。 注1“固定”通道是指安装方式（例如，通过螺钉、螺母、焊接）只能通过使用工具移除的通道。 ISO 14122-3:2016规定了最低要求，当安装机器的建筑物或土建结构（如楼梯、阶梯、护栏）需要相同的通道时，该最低要求也适用，前提是该结构部分的主要功能是提供进入机器的通道。 注2:如果没有当地法规或标准，ISO 14122的本部分也可用于本标准范围之外的访问方式。 ISO 14122的本部分旨在与ISO 14122？1一起使用，以给出台阶、阶梯和护栏的要求。 ISO 14122系列作为一个整体适用于需要固定通道的固定和移动机械。它不适用于电动通道，如电梯、自动扶梯或其他专门设计用于在两层之间吊起人员的装置。 ISO 14122-3:2016不适用于发布日期之前制造的机械。

ISO 14122-3:2016 gives requirements for non-powered stairs, stepladders and guard-rails which are a part of a stationary machine, and to the non-powered adjustable parts (e.g. foldable, slidable) and movable parts of those fixed means of access. NOTE 1 "Fixed" means of access are those mounted in such a manner (for example, by screws, nuts, welding) that they can only be removed by the use of tools. ISO 14122-3:2016 specifies minimum requirements that also apply when the same means of access is required as the part of the building or civil construction (e.g. stairs, stepladders, guard-rails) where the machine is installed, on condition that the main function of that part of the construction is to provide a means of access to the machine. NOTE 2 Where no local regulation or standards exists, this part of ISO 14122 may be used also for means of access which are outside the scope of the standard. It is intended that this part of ISO 14122 be used with ISO 14122？1 to give the requirements for steps, stepladders and guard-rails. The ISO 14122 series as a whole is applicable to both stationary and mobile machinery where fixed means of access are necessary. It is not applicable to powered means of access such as lifts, escalators, or other devices specially designed to lift persons between two levels. ISO 14122-3:2016 is not applicable to machinery manufactured before the date of its publication.