Mich. Admin. Code R. 408.41464 - Communication system; location; signals
Rule 1464.
(1)
In a tunnel that is more than 225 feet long, the employer shall provide a
communication system at all of the following locations:
(a) The working face.
(b) The top of the shaft.
(c) The bottom of the shaft.
(d) The hoisting station, if
provided.
(e) Each 1,000 feet of
tunnel.
(f) The office, if
provided. A public telephone or other communication system shall be provided or
available to each tunnel project to secure outside emergency help.
(g) Hoist operators shall be provided with a
closed-circuit voice communication system to each landing station. The system
shall have speaker microphones located so that the operator can communicate
with individual landing stations during hoist use.
(2) An employer shall establish and maintain
direct communications for coordination of activities with other employers whose
operations at the jobsite affect or may affect the safety of employees who are
underground.
(3) If a tunnel is
pressurized, then an employer shall provide all of the following additional
locations with a communication system:
(a)
The working chamber side of the manlock near the door.
(b) The interior of all locks.
(c) The lock attendants station.
(d) The compressor plant.
(e) The first aid station.
(4) Communication systems shall be
tested upon initial entry of each shift to the underground, and as often as
necessary thereafter, to ensure that they are in working order.
(5) An employee who works alone underground
in a hazardous location and who is both out of the range of natural unassisted
voice communication and not under observation by other persons shall be
provided with an effective means of obtaining assistance in an
emergency.
(6) If a gassy condition
exists, then all phones that are located within the tunnel shall conform to the
United States Bureau of Mines Schedule 9b, Part 23 of the provisions of 30
C.F.R., Mineral Resources, Parts 1-199 "Mine Safety and Health Administration,
Department of Labor," as adopted in
R
408.41410. The telephone or other signal communication
systems shall be independent of the tunnel power supply and shall be installed
so that the use or disruption of any one phone or signal location will not
disrupt the operation of the system from any other location.
Notes
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