CSA CAN/CSA-M424.1-88

Abstract

This Standard describes the technical requirements and procedures necessary for the design, performance and testing of new or unused flameproof, non-rail-bound diesel powered, self-propelled machines for use in gassy underground mines. The working environment of such mines is characterized by the presence of methane gas and combustible dust. <br>The spontaneous ignition temperature of such combustible dust is specified to be a minimum of 150&#176;C (300&#176;F). This value is the maximum allowable machine surface temperature for the purpose of this Standard. <br>This Standard applies to machines of 45 000 kg (100 000 Ib) mass or less, which are designed to operate on level ground at a maximum speed of 32 km/h (20 mph) or less. <br>Performance of a certified machine from a standpoint such as water scrubber functioning etc, shall be evaluated at a reference grade of 20% for the purpose of this Standard unless otherwise noted. <br>The values given in SI (metric) units are the standard. The values given in parentheses are for information only. <br>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. <br>Brake construction, stopping performance and test requirements will be prepared by a Canadian Standards Association Technical Committee formed to produce a comprehensive brake Standard for a wide variety of underground and surface mining machines.