前言:这是CSA B149的第六版。5，机动车丙烷燃料系统和容器的安装规范。它取代了CSA集团于2015年、2010年、2005年和2000年发布的先前版本，即CAN/CSA-B149。1995年，加拿大天然气协会（CGA）将其命名为CAN/CGA-B149。5，根据《公路车辆丙烷燃料系统和油箱安装规范》。这些关于在机动车辆上安装丙烷燃料系统和油箱的要求最初于1982年作为CAN/CGA-B149的修订版发布。2-80，丙烷安装规范，随后作为第15部分纳入CAN/CGA版本- B149。2 1986年和1991年出版。1995年，CAN/CGA-B149中删除了第15部分的要求。2创建CAN/CGA-B149。5为了方便那些参与转换丙烷车辆的个人，他们不需要CSA B149。1和B149。2码。以下是本版本的主要变更:OEM状态确认方法的变更；改为公制；添加到ISO 19825和UL 1337中的参考文件；根据CSA B51合理化安装和设计要求；容器附件的压力额定值要求与容器PRV相匹配；消除远程加注位置的第二个固定液位计； 增加了燃油箱回流连接的要求；车辆多个油箱加注要求的变更；更新储罐安装要求，以解决螺栓连接和异种金属问题；禁止使用带有丙烷软管的齿轮卡箍；PRV排气角度的变化；吹扫要求和容器退役的变更；并添加OEM窗口标签。CSA集团承认，该标准的制定部分是由于加拿大自然资源部的财政支持。本规范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本规范适用于a）为提供动力而在机动车辆上安装、维修和修理丙烷燃料系统部件和容器；andb）当丙烷用于燃料用途（动力除外）时，在机动车辆上安装容器，如休闲车、户外食品服务装置和洗衣机。注:“机动车辆”包括除公路车辆外的其他车辆使用丙烷作为发动机燃料的情况，如覆冰机、起重卡车、割草机等。1.2本规范不适用于符合加拿大机动车辆安全法规的车辆； *b） 船上使用的丙烷；和c）电器的安装*有关CMVSS合规性的确认，您可以联系车辆制造商。1.3如果使用术语“丙烷”，本规范的要求包括并同样适用于主要由以下碳氢化合物或其混合物组成的任何材料:丙烷、丙烯、丁烷（正丁烷或异丁烷）和丁烯。1.4本规范及其引用的任何标准均不对规范中引用的设备和材料的预期寿命、耐久性或运行性能做出或暗示任何保证或保证。1.5所示数值以国际单位制（公制）为单位。 代码包含码/磅当量，因此代码也可用于这些单位。码/磅与SI的换算符合表F.1。除非另有说明，否则所有压力均为表压。1.6在本规范中，“应”用于表示要求，即用户为遵守本规范有义务满足的规定“宜”用于表示建议或建议但不要求的；以及“可”用于表示选择或本规范范围内允许的。随附条款的注释不包括要求或替代要求；随附条款的注释的目的是与文本解释性或信息性材料分开。 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）以定义其应用。

Preface:This is the sixth edition of CSA B149.5,Installation code for propane fuel systems and containers on motor vehicles. It supersedes the previous editions published in 2015, 2010, 2005, and 2000 by CSA Group as CAN/CSA-B149.5, and in 1995 by the Canadian Gas Association (CGA) as CAN/CGA-B149.5, under the titleInstallation code for propane fuel systems and tanks on highway vehicles.These requirements for the installation of propane fuel systems and tanks on motor vehicles were originally published in 1982 as an amendment to CAN/CGA-B149.2-80,Propane Installation Code, and were subsequently incorporated as Part 15 in the editions of CAN/CGA-B149.2 published in 1986 and 1991. In 1995, the Part 15 requirements were removed from CAN/CGA-B149.2 to create CAN/CGA-B149.5 for the convenience of those individuals involved with converting propane vehicles who do not require the CSA B149.1 and B149.2 Codes.The following are the major changes to this edition:change made to method of confirmation of OEM status;changed to metric;reference added to ISO 19825 and UL 1337;rationalization of installation and design requirements with CSA B51;requirement for the pressure rating of container appurtenances to match the container PRV;elimination of second fixed liquid level gauge at remote fill location;added requirements for return connections to a fuel tank;changes to the requirements for filling of multiple tanks on a vehicle;updated tank mounting requirements to address bolting and dissimilar metals;prohibit the use of gear clamps with propane hoses;changes to the angle of venting for PRVs;changes to purging requirements and container decommissioning; andaddition of OEM window label.CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada.This Code 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.Scope:1.1This Code applies toa) the installation, servicing, and repair of propane fuel system components and containers on motor vehicles for the provision of motive power; andb) the installation of containers on motor vehicles such as recreational vehicles, outdoor food service units, and wash-mobiles when propane is to be used for fuel purposes (other than motive power).Note:"Motor vehicles" include cases where propane is used as an engine fuel in other than highway vehicles, such as ice resurfacing machines, lift trucks, lawnmowers, etc.1.2This Code does not apply toa) vehicles qualified under the Canada Motor Vehicle Safety Regulations; *b) propane used on boats; andc) the installation of appliances.*For confirmation of CMVSS compliance, you can contact the vehicle manufacturer.1.3Where the term "propane" is used, the requirements of this Code include, and apply equally to, any material that is composed predominantly of any of the following hydrocarbons or a mixture of them: propane, propylene, butane (normal butane or isobutane), and butylenes.1.4This Code and any Standards referenced in it do not make or imply any assurance or guarantee with respect to the life expectancy, durability, or operating performance of equipment and materials referenced in the Code.1.5The values shown are in SI (metric) units. The Code contains yard/pound equivalents so the code can be used in these units also. The conversion of yard/pound to SI is in accordance with Table F.1. All pressures are gauge unless otherwise noted.1.6In this Code, shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; "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 Code. 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 (non-mandatory) to define their application.