ISO 14120:2015规定了保护人员免受机械危险的防护装置的设计、施工和选择的一般要求。 ISO 14120:2015指出了可能影响防护装置设计和施工的其他危险。 ISO 14120:2015适用于出版后制造的机械防护装置。 如果使用固定式和移动式防护装置，则这些要求适用。本国际标准不包括联锁装置。ISO 14119涵盖了这些内容。 ISO 14120:2015未规定专门与机动性相关的特殊系统的要求，如ROPS（翻滚保护结构）、FOPS（坠落物体保护结构）和TOPS（翻倒保护结构）或机械提升负载的能力。

ISO 14120:2015 specifies general requirements for the design, construction, and selection of guards provided to protect persons from mechanical hazards. ISO 14120:2015 indicates other hazards that can influence the design and construction of guards. ISO 14120:2015 applies to guards for machinery which will be manufactured after it is published. The requirements are applicable if fixed and movable guards are used. This International Standard does not cover interlocking devices. These are covered in ISO 14119. ISO 14120:2015 does not provide requirements for special systems relating specifically to mobility such as ROPS (rollover protective structures), FOPS (falling-object protective structures), and TOPS (tip over protective structures) or to the ability of machinery to lift loads.