本文件提供了制定事故类型和/或特定危险测试方法的原则，以及消防员在从事特定救援活动时头盔的最低性能要求。 与特定救援活动有关的头盔，如道路交通事故（RTC）和城市搜索救援（USAR）记录在本文件的各个子条款中。 注:更多指南见ISO 18639-1。 本文件旨在确保指定事故类型和/或特定危险头盔的最低性能要求。 本文件涵盖了头盔的一般设计、所用材料的最低性能水平以及确定该性能水平的试验方法。 它不包括在消防等其他高风险情况下使用的特殊头盔。 本文件不包括躯干、手臂、腿和脚的保护或手部的保护，以防其他危险，例如化学、生物、辐射和电气危险，但有限的意外接触火场化学品和受污染的血液或体液除外。 选择合适的个人防护装备（PPE）系统（包括头盔）取决于进行有效的风险评估，该评估确定将面临的危险，评估这些危险的可能性，并提供减少或消除这些危险的方法。

This document provides the principles that govern the development of incident type and/or hazard specific test methods and minimum performance requirements for helmets for firefighters while engaged in specific rescue activities. Helmets related to specific rescue activities, such as road traffic crash (RTC) and urban search and rescue (USAR), are documented in individual subclauses of this document. NOTE Further guidance can be found in ISO 18639-1. The purpose of this document is to ensure that minimum performance requirements for incident type and/or hazard specific helmets are designated. This document covers general helmet design, the minimum performance level of the materials used and the methods of test for determining this performance level. It does not cover special helmets for use in other high risk situations such as firefighting. This document does not cover protection for the torso, arms, legs and feet or protection of the hands against other hazards, e.g. chemical, biological, radiation and electrical hazards, except for limited, accidental exposure to fire ground chemicals and contaminated blood or body fluids. Selection of the appropriate system of personal protective equipment, (PPE), including helmets, is dependent on carrying out an effective risk assessment which identifies the hazard to be faced, evaluates the likelihood of those hazards and provides the means of reducing or eliminating these hazards.