标准摘要
[中文适用范围]: 本文件规定了旨在防止机器意外启动(见 3.2)以允许在危险区域进行安全人为干预(见附录 A)的设计方法的要求。 本文件适用于所有类型能源的意外启动,即: ——电源,例如电力、液压、气动; ——由于重力、压缩弹簧等而储存的能量; ——外部影响,例如风。 本文件没有规定控制系统安全相关部分的性能级别或安全完整性级别。 虽然确定了防止意外启动的可用方法,但本文档并未指定防止特定机器意外启动的方法。 注:C 型标准可以定义防止意外启动造成损害所需的方法。 否则,特定机器的要求需要通过本文件范围之外的风险评估来确定。 [外文原描述]: ISO 14118:2017 specifies requirements for designed-in means aimed at preventing unexpected machine start-up (see 3.2) to allow safe human interventions in danger zones (see Annex A). ISO 14118:2017 applies to unexpected start-up from all types of energy source, i.e.: - power supply, e.g. electrical, hydraulic, pneumatic; - stored energy due to, e.g. gravity, compressed springs; - external influences, e.g. from wind. ISO 14118:2017 does not specify performance levels or safety integrity levels for safety-related parts of control systems. While available means to prevent unexpected start-up are identified, this document does not specify the means for the prevention of unexpected machine start-up for specific machines. NOTE A type-C standard can define the required means for the prevention of harm arising from unexpected start-up. Otherwise, the requirements for a specific machine need to be determined by risk assessment outside the scope of this document.
英文名称Safety of machinery — Prevention of unexpected start-up