本文件规定了便携式、手持式、内燃机驱动切断机的设计和施工的安全要求和验证措施，该切断机拟由一名操作员用于切割建筑材料，如沥青、混凝土、石头和金属。它仅适用于那些专门设计用于旋转、粘结磨料和/或超磨料（例如金刚石）切割轮的机器，切割轮的最大外径为430 mm，中心安装在主轴上，并由主轴驱动，其中砂轮顶部旋转远离操作员（见图1）。 本文件涉及在制造商合理预见的误用条件下按预期使用这些机器时，对这些机器具有重要意义的所有重大危险、危险情况或危险事件。重大危险清单见附录F。 本文件规定了消除或减少因使用这些设备而产生的危险的方法，以及与机器一起提供的安全工作实践相关的信息类型。 本文件不考虑切断轮规格。 切断轮被视为符合现有切断轮标准。 注:例如，参见参考书目。 在整个文件中，便携式、手持式、内燃机驱动的切断机被称为“切断机”。 本文件不适用于出版日期前制造的机器。

This document specifies safety requirements and measures for their verification for the design and construction of portable, hand-held, internal combustion engine-driven cut-off machines intended to be used by a single operator in the cutting of construction materials, such as asphalt, concrete, stone and metal. It is applicable only to those machines designed purposely for use with a rotating, bonded-abrasive and/or super-abrasive (for example diamond) cut-off wheel having a maximum outer diameter of 430 mm, centre-mounted on and driven by a spindle shaft where the top of the wheel rotates away from the operator (see Figure 1). This document deals with all significant hazards, hazardous situations or hazardous events significant to these machines when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. See Annex F for a list of significant hazards. This document specifies methods for the elimination or reduction of hazards arising from their use, as well as the type of information on safe working practices to be provided with the machines. Cut-off wheel specifications are not considered in this document. Cut-off wheels are deemed to comply to existing cut-off wheel standards. NOTE For example see Bibliography. All through the document, portable, hand-held, internal combustion engine-driven cut-off machines are called "cut-off machines". This document is not applicable to machines manufactured before the date of its publication.