30 CFR § 75.1911
Fire suppression systems for diesel-powered equipment
and fuel transportation units.
(a) The fire suppression system required by Secs. 75.1907
shall be a multipurpose dry chemical type (ABC) fire suppression system listed or approved by a nationally recognized
independent testing laboratory and appropriate for installation on
diesel-powered equipment and fuel transportation units.
(1) The system shall be installed in accordance with the
manufacturer's specifications and the limitations of the listing or
(2) The system shall be installed in a protected location or
guarded to minimize physical damage from routine vehicle operations.
(3) Suppressant agent distribution tubing or piping shall be
secured and protected against damage, including pinching, crimping,
stretching, abrasion, and corrosion.
(4) Discharge nozzles shall be positioned and aimed for maximum
fire suppression effectiveness. Nozzles shall also be protected against
the entrance of foreign materials such as mud, coal dust, or rock dust.
(b) The fire suppression system shall provide fire suppression and,
if automatic, fire detection for the engine including the starter,
transmission, hydraulic pumps and tanks, fuel tanks, exposed brake
units, air compressors and battery areas on diesel-powered equipment
and electric panels or controls used on fuel transportation units and
other areas as necessary.
(c) If automatic, the fire suppression system shall include audible
and visual alarms to warn of fires or system faults.
(d) The fire suppression system shall provide for automatic engine
shutdown. If the fire suppression system is automatic, engine shutdown
and discharge of suppressant agent may be delayed for a maximum of 15
seconds after the fire is detected by the system.
(e) The fire suppression system shall be operable by at least two
manual actuators. One actuator shall be located on each side of the
equipment. If the equipment is provided with an operator's compartment,
one of the manual actuators shall be located in the compartment within
reach of the operator.
(f) The fire suppression system shall remain operative in the event
of engine shutdown, equipment electrical system failure, or failure of
any other equipment system.
(g) The electrical components of each fire suppression system
installed on equipment used where permissible electric equipment is
required shall be permissible or intrinsically safe and such components
shall be maintained in permissible or intrinsically safe condition.
(h) Electrically operated detection and actuation circuits shall be
monitored and provided with status indicators showing power and circuit
continuity. If the system is not electrically operated, a means shall
be provided to indicate the functional readiness status of the
(i) Each fire suppression system shall be tested and maintained in
accordance with the manufacturer's recommended inspection and
maintenance program and as required by the nationally recognized
independent testing laboratory listing or approval, and be visually
inspected at least once each week by a person trained to make such
(j) Recordkeeping Persons performing inspections and tests of fire
suppression systems under paragraph (i) shall record when a fire
suppression system does not meet the installation or maintenance
requirements of this section.
(1) The record shall include the equipment on which the fire
suppression system did not meet the installation or maintenance
requirements of this section, the defect found, and the corrective
(2) Records are to be kept manually in a secure manner not
susceptible to alteration or recorded electronically in a secured
computer system that is not susceptible to alteration.
(3) Records shall be maintained at a surface location at the mine
for one year and made available for inspection by an authorized representative of
the Secretary and miners' representatives.
(k) All miners normally assigned to the active workings of the mine
shall be instructed about the hazards inherent to the operation of the
fire suppression systems and, where appropriate, the safeguards
available for each system.
(l) For purposes of § 75.380
(f), a fire suppression system
installed on diesel-powered equipment and meeting the requirements of
this section is equivalent to a fire suppression system meeting the
requirements of Secs. 75.1107-3 through 75.1107-16.