CSA M424.2:22

1 Scope 1.1 Inclusions This Standard describes the technical requirements and procedures necessary for the design, performance, and testing of new or unused diesel engines for use in non-gassy underground mines. Note: See CSA M424.1 for additional explosion-proof construction and performance requirements for diesel- powered machines for use in gassy underground coal mines. 1.2 Exclusions Machine design and performance requirements are not included in the Scope of this Standard. Braking system performance requirements and proof tests are not included in the Scope of this Standard. Notes: 1) See CSA M424.0 and CSA M424.4 for general underground mining vehicle performance requirements. 2) See CSA M424.3 for brake construction, stopping performance, and test requirements. 1.3 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.