30 CFR § 7.97
(a) An application for approval of a diesel power package shall
contain sufficient information to document compliance with the
technical requirements of this subpart and include: drawings,
specifications, and descriptions with dimensions (including tolerances)
demonstrating compliance with the technical requirements of § 7.98
The specifications and descriptions shall include the materials of
construction and quantity. These shall include the following--
(1) A general arrangement drawing showing the diesel power package
and the location and identification of the intake system, exhaust
system, safety shutdown system sensors, flame arresters, exhaust
conditioner, emergency intake air shutoff device, automatic fuel
shutoff device and the engine.
(2) Diesel engine specifications including the MSHA approval
number, the engine manufacturer, the engine model number, and the rated
speed, rated horsepower, and fuel rate.
(3) A drawing(s) which includes the fan blade material
specifications, the location and identification of all water-cooled
components, coolant lines, radiator, surge tank, temperature sensors,
and orifices; arrows indicating proper flow direction; the height
relationship of water-cooled components to the surge tank; and the
proper procedure for filling the cooling system.
(4) A drawing(s) showing the relative location, identification of
and design of the safety shutdown system.
(5) Specific component identification, or specific information
including detail drawings that identify the characteristics of the
cooling system and safety shutdown system that ensures compliance with
the technical requirements.
(6) Detail drawings of gaskets used to form flame-arresting paths.
(7) An assembly drawing showing the location and identification of
all intake system components from the air cleaner to the engine head.
(8) An assembly drawing showing the location and identification of
all exhaust system components from the engine head to the exhaust
(9) Detail drawings of those intake and exhaust system components
identified in paragraphs (a)(7) and (a)(8) of this section that ensure
compliance with the technical requirements. An exhaust conditioner
assembly drawing shall be provided showing the location, dimensions,
and identification of all internal parts, exhaust inlet and outlet,
sensors, and the exhaust gas path through the exhaust conditioner. If a
wet exhaust conditioner is used, the exhaust conditioner assembly
drawing must also show the location, dimensions, and identification of
the fill port, drain port, low water check port; high or normal
operating water level; minimum allowable low water level; and the
maximum allowable grade that maintains explosion-proof operations.
(10) A power package checklist which shall consist of a list of
specific features that must be checked and tests that must be performed
to determine if a previously approved diesel power package is in
approved condition. Test procedures shall be specified in sufficient
detail to allow the evaluation to be made without reference to other
documents. Illustrations shall be used to fully identify the approved
configuration of the diesel power package.
(11) Information showing that the electrical systems and components
meet the requirements of § 7.98
(12) A drawing list consisting of a complete list of those drawings
and specifications which show the details of the construction and
design of the diesel power package.
(b) Composite drawings specifying the required construction details
may be submitted instead of the individual drawings in paragraph (a) of
(c) All documents shall be titled, dated, numbered, and include the
(d) When all testing has been completed, the following information
shall be submitted and become part of the approval documentation:
(1) The settings of any adjustable devices used to meet the
performance requirements of this subpart.
(2) The coolant temperature sensor setting and exhaust gas
temperature sensor setting used to meet the performance requirements of
(3) The minimum allowable low water level and the low water sensor
setting used to meet the performance requirements of this subpart for
systems using a wet exhaust conditioner as the exhaust flame arrester.
(4) The maximum grade on which the wet exhaust conditioner can be
operated retaining the flame arresting characteristics.
(5) A finalized version of the power package checklist.