序言这是CSA M424的第三版。1、用于高瓦斯地下煤矿的隔爆型无轨柴油动力机器。它取代了1988年和2016年出版的之前版本。本版本的更改包括:a）引入了点火危险评估，并添加了附录，以供指导。b） 耐火液压油含量已移至CSA M424。0-22. c） 已实现与CSA采用的IEC标准的集成。d） 与MSHA和ISO要求的兼容性有所提高。 e） 大多数普遍适用的机器要求（如废气排放要求）已被删除，仅保留与高瓦斯地下矿山机器有关的要求。f） 修改了静电风险评估的要求。g） 允许使用几种类型的阻火器技术。h） 仅在发动机超速时才关闭进气的要求已经修改。i） 机内电气要求已修订。j） 为了符合当前的管理要求，本标准中的各种条款已更新或重新编号。 CSA集团承认，该标准的制定部分是由于加拿大自然资源部CanmetMINING，Land and Minerals Sector的财政支持。本标准由CSA集团在加拿大劳动法管理者协会-职业安全与健康（CAALL-OSH）的资助下制定，包括省级和地区政府，以及加拿大政府。CSA集团对本标准的内容全权负责，CSA集团和资助机构不承担与使用本标准所含信息有关的任何责任。 本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围1。1.本标准描述了用于高瓦斯地下煤矿的新型无轨柴油驱动自行式机器的结构和试验要求。它是对CSA M424的补充或修正。0和CSA M424。2.注:高瓦斯矿井的工作环境特点是存在甲烷气体和可燃性粉尘。 1.2例外情况本标准未规定安全要求，但与可能导致爆炸的点火风险直接相关的要求除外。制动系统性能要求和验证试验不包括在本标准的范围内，但从减少火灾和爆炸危险的角度出发的情况除外。注:1）见CSA M424。0表示一般车辆设计、安全和性能要求。2） 见CSA M424。2柴油发动机设计、安全性和排放要求。 3） 见CSA M424。3.制动器构造、制动性能和试验要求。1.3标准大气条件——可以假设发动机可能运行的标准大气条件（与大气的爆炸特性有关）:a）温度:-20℃-60℃；b） 压力:80千帕（0.8巴）至110千帕（1.1巴）；和c）含氧量正常的空气，约为21%v/v.1.4本标准中的术语“应”用于表示要求，即:。 e、 ，用户必须满足的条款，以符合标准；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。 附件被指定为规范性（强制性）或信息性（非强制性）来定义其应用。

PrefaceThis is the third edition of CSA M424.1, Flameproof non-rail-bound diesel-powered machines for use in gassy underground coal mines. It supersedes previous editions published in 1988 and 2016. Changes to this edition include: a) Ignition hazard assessment has been introduced, with Annex added for guidance purposes. b) Fire-resistant hydraulic fluid content has been moved to CSA M424.0-22. c) Integration with CSA-adopted IEC standards has been achieved. d) Compatibility with MSHA and ISO requirements has been increased. e) Most generally applicable machine requirements (such as exhaust emissions requirements) have been removed, retaining only those that pertain to machines for gassy underground mines. f) Requirements for assessment of static electricity risks have been revised. g) Several types of flame arrester technologies have been allowed for use. h) Requirements for intake air shutoff only on engine overspeed have been revised. i) Intra-machine electrical requirements have been revised. j) To comply with current administrative requirements, various Clauses throughout the Standard have either been updated or renumbered. CSA group acknowledges that the development of this Standard was made possible, in part, by the financial support of CanmetMINING, Lands and Minerals Sector, Department of Natural Resources Canada. This Standard was developed by CSA Group with funding support provided by the Canadian Association of Administrators of Labour Law - Occupational Safety and Health (CAALL-OSH), including provincial and territorial governments, as well as the Government of Canada. CSA Group is solely responsible for the content of this Standard, and CSA Group and the funding bodies disclaim any liability in connection with the use of the information contained herein. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope1.1 Inclusions This Standard describes construction and test requirements for new non-rail-bound diesel-powered, self-propelled machines for use in gassy underground coal mines. It is supplementary to or amendatory of CSA M424.0 and CSA M424.2. Note: The working environment of gassy mines is characterized by the presence of methane gas and combustible dust.1.2 Exclusions This Standard does not specify requirements for safety, other than those directly related to the risk of ignition which can lead to an explosion. Braking system performance requirements and proof tests are not included in the scope of this Standard, except from the standpoint of the reduction of fire and explosion hazards. Notes: 1) See CSA M424.0 for general vehicle design, safety, and performance requirements. 2) See CSA M424.2 for diesel engine design, safety, and emissions requirements. 3) See CSA M424.3 for brake construction, stopping performance, and test requirements.1.3 Standard atmospheric conditions The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that the engine may be operated are: a) temperature: -20 C to 60 C; b) pressure: 80 kPa (0.8 bar) to 110 kPa (1.1 bar); and c) air with normal oxygen content, approximately 21% v/v.1.4 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application.