30 CFR § 36.2
The following definitions apply in this part.
. An individual, partnership, company, corporation,
association, or other organization, that designs, manufactures,
assembles, or controls the assembly and that seeks a certificate of
approval or preliminary testing of mobile diesel-powered transportation
equipment as permissible.
Certificate of approval
. A formal document issued by MSHA stating
that the complete assembly has met the requirements of this part for
mobile diesel-powered transportation equipment and authorizing the use
and attachment of an official approval plate so indicating.
. A piece, part, or fixture of mobile diesel-powered
transportation equipment that is essential to its operation as a
. A compression-ignition, internal-combustion engine
that utilizes diesel fuel.
. A component or subassembly that is so constructed
and protected by an enclosure and/or flame arrester (s) that if a
flammable mixture of gas is ignited within the enclosure it will
withstand the resultant pressure without damage to the enclosure and/or
flame arrester(s). Also the enclosure and/or flame arrester(s) shall
prevent the discharge of flame or ignition of any flammable mixture
that surrounds the enclosure.
. A device so constructed that flame or sparks from
the diesel engine cannot propagate an explosion of a flammable mixture
. A mixture of gas, such as methane, natural gas,
or similar hydrocarbon gas with normal air, that will propagate flame
or explode violently when initiated by an incendive source.
. The composition of the mixture of fuel and air in
the combustion chamber of the diesel engine expressed as weight-pound
of fuel per pound of air.
. The United States Department of Labor, Mine Safety and Health
Mobile diesel-powered transportation equipment
. Equipment that is:
(1) Used for transporting the product being mined or excavated, or
for transporting materials and supplies used in mining or excavating
(2) Mounted on wheels or crawler treads (tracks); and
(3) Powered by a diesel engine as the prime mover.
. When each component and the entire assembly of
the mobile diesel-powered transportation equipment performs the
functions for which they were designed.
. As applied to mobile diesel-powered transportation
equipment, this means that the
complete assembly conforms to the requirements of this part, and that a
certificate of approval to that effect has been issued.
. A group or combination of components.
[61 FR 55525, Oct. 25, 1996]