B109-17-车用天然气安装代码序言这是CSA B109《车用天然气安装代码》的第三版。它取代了2014年以同一名称出版的前一版和2001年以《车辆用天然气安装规范第1部分压缩天然气》出版的一版。本规范包括以下内容:a）CSA B109，第1部分——压缩天然气；和b）CSA B109，第2部分-液化天然气。本版本的变化包括:a）将CNG和LNG的覆盖范围划分为独立的不同部分（第1部分——CNG；第LNG部分）；b） 增加双燃料汽车的覆盖范围，以识别新兴技术；c） 取消了ISO 11439集装箱的限额，因为加拿大运输部不认可这些集装箱；d）将热源保护从规定要求改为性能要求------------------------------------------------------------ -------------------------------------------------------------------------------------------------------------------------B109-17，第1部分-压缩天然气。1本规范适用于动力工业卡车应用和压缩天然气（CNG）车辆中安装的燃料储存和输送系统的安装、检查、维修和维护。这包括自行式车辆上用于提供动力的燃油系统。监管要求可能会取代本规范的要求。1.2本规范不适用于a）静止发动机；b） 使用天然气作为燃料而非推进的移动设备；c） 液化天然气燃料储存系统*；d） 燃料管理系统的电子部件；e） 在船舶或轨道车辆上储存或使用天然气；f） 休闲全地形车；g） 摩托车；和h）根据加拿大机动车安全法规认证的车辆（包括其集装箱）。 *本规范第2部分涵盖液化天然气燃料系统。1.3国际单位制给出的数值为本规范中的记录单位。括号中给出的值仅供参考和比较。注:1）在将英制单位转换为公制单位时，可以使用IEEE/ASTM SI 10或ISO 80000-1作为指南。2） 本规范中使用“加仑”一词时，表示相当于3.785升水容量的美国加仑。1.4除非另有规定，否则本规范中提及的所有“psi”均应视为表压。有关本规范中使用的计量单位的更多信息，请参见附录H。1.5在本规范中，“应”用于表示要求，即用户为遵守本规范而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“may”用于表示一个选项或在本规范范围内允许的选项。 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）以定义其应用-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------B109-17，第2部分-液化天然气1。1本规范适用于动力工业卡车应用和液化天然气（LNG）车辆中安装的燃料储存和输送系统的安装、检查、维修和维护。这包括自行式车辆上用于提供动力的燃油系统。监管要求可能会取代本规范的要求。 1.2本规范不适用于a）静止发动机；b） 使用天然气作为燃料而非推进的移动设备；c） 燃料管理系统的电子部件；d） 在海上船舶或铁路车辆上储存或使用天然气，或通过油罐车运输；e） 休闲全地形车；f）摩托车。1.3国际单位制给出的数值为本规范中的记录单位。括号中给出的值仅供参考和比较。注:1）在将英制单位转换为公制单位时，可以使用IEEE/ASTM SI 10或ISO 80000-1作为指南。2） 本规范中使用“加仑”一词时，表示相当于3.785升水容量的美国加仑。1.4除非另有规定，否则本规范中提及的所有“psi”均应视为表压。有关本规范中使用的计量单位的更多信息，请参见附录E。 1.5在本规范中，“应”用于表示要求，即用户为遵守本规范而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“may”用于表示一个选项或在本规范范围内允许的选项。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）以定义其应用。

B109-17 - Natural gas for vehicles installation codePrefaceThis is the third edition of CSA B109, Natural gas for vehicles installation code. It supersedes the previous edition published in 2014 under the same title and the 2001 edition, published under the title Natural gas for vehicles installation code - Part 1 Compressed natural gas. This Code consists of the following: a) CSA B109, Part 1 - Compressed natural gas; and b) CSA B109, Part 2 - Liquefied natural gas. Changes in this edition include the following: a) separated CNG and LNG coverage into standalone distinct sections (Part 1-CNG; Part-LNG); b) added coverage for dual fuel vehicles to recognize emerging technology; c) removed allowance of ISO 11439 containers since these are not recognized by Transport Canada; and d) changed protection from heat sources from a prescriptive requirement to a performance requirement. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------B109-17, Part 1 - Compressed natural gasScope1.1 This Code applies to the installation, inspection, repair, and maintenance of the fuel storage and delivery system installed in powered industrial truck applications and vehicles for use with compressed natural gas (CNG). This includes fuel systems on self-propelled vehicles for the provision of motive power. Regulatory requirements might supersede the requirements of this Code. 1.2 This Code does not apply to a) stationary engines; b) mobile equipment using natural gas as a fuel for other than propulsion; c) LNG fuel storage systems*; d) electronic components of a fuel management system; e) storage or utilization of natural gas on marine vessels or rail vehicles; f) recreational all terrain vehicles; g) motorcycles; and h) vehicles (including their containers) qualified under the Canadian Motor Vehicle Safety Regulations. * Part 2 of this Code covers LNG fuel systems. 1.3 The values given in SI units are the units of record for the purposes of this Code. The values given in parentheses are for information and comparison only. Notes: 1) IEEE/ASTM SI 10 or ISO 80000-1 can be used as a guide when converting Imperial units to metric units. 2) Where the word "gallon" is used in this Code, it indicates a U.S. gallon equivalent to 3.785 liters water capacity. 1.4 All references to "psi" throughout this Code are to be considered gauge pressures, unless otherwise specified. See Annex H for additional information about the units of measurement used in this Code. 1.5 In 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. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------B109-17, Part 2 - Liquefied natural gasScope1.1 This Code applies to the installation, inspection, repair, and maintenance of the fuel storage and delivery system installed in powered industrial truck applications and vehicles for use with liquefied natural gas (LNG). This includes fuel systems on self-propelled vehicles for the provision of motive power. Regulatory requirements might supersede the requirements of this Code. 1.2 This Code does not apply to a) stationary engines; b) mobile equipment using natural gas as a fuel for other than propulsion; c) electronic components of a fuel management system; d) storage or utilization of natural gas on marine vessels or rail vehicles or transportation by tanker truck; e) recreational all-terrain vehicles; and f) motorcycles. 1.3 The values given in SI units are the units of record for the purposes of this Code. The values given in parentheses are for information and comparison only. Notes: 1) IEEE/ASTM SI 10 or ISO 80000-1 can be used as a guide when converting Imperial units to metric units. 2) Where the word "gallon" is used in this Code, it indicates a U.S. gallon equivalent to 3.785 liters water capacity. 1.4 All references to "psi" throughout this Code are to be considered gauge pressures, unless otherwise specified. See Annex E for additional information about the units of measurement used in this Code. 1.5 In 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.