scope:

Preface

This 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 2-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

This Code was prepared by the Subcommittee on Natural Gas for Vehicles Installation Code, under the jurisdiction of the Technical Committee on Natural Gas Powered Vehicles and Fuelling under the jurisdiction of the Strategic Steering Committee on Transportation and has been formally approved by the Technical Committee and the Interprovincial Gas Advisory Council.

Notes:

1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.

2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose. 3) This Standard was developed by consensus, which is defined by CSA Policy governing standardization - Code of good practice for standardization as "substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity". It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this Standard.

4) To submit a request for interpretation of this Standard, please send the following information to inquiries@csagroup.org and include "Request for interpretation" in the subject line: a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

b) provide an explanation of circumstances surrounding the actual field condition; and

c) where possible, phrase the request in such a way that a specific "yes" or "no" answer will address the issue. Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are available on the Current Standards Activities page at standardsactivities.csa.ca.

5) This Standard is subject to review within five years from the date of publication. Suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to nquiries@csagroup.org and include "Proposal for change" in the subject line:

a) Standard designation (number);

b) relevant clause, table, and/or figure number;

c) wording of the proposed change; and

d) rationale for the change.