LO CAL LAWS, ESPECIALLY ON
WEIGHT LIMITATIONS. When traveling on
the highway make sure all headlights,
clearance lights and tail lights are on. Use
proper traffic warning flags and signs.
CRUSHING PLANT "NOISE"
Crushing equipment by its very nature is noisy
and the auxiliary equipment found in and
around crushing equipment such as chutes,
transfer stations, screens, etc., can at times be
noisier than th e Crusher itself. EAR
P R OT ECT IV E DEVICES MAY BE
REQUIRED IF NOISE LEVELS ARE
HIGHER THAN THOSE ALLOWED BY
LA W. I f ea r prot ecti v e devices are
undesireable, consideration should be given to
reducing the amount of noise exposure that an
operator or maintenance man may be
subjected to. In other words, shorter working
hours.
Although alteration of the machinery to
change its noise characteristics may be
economically impossible, many operators
have found that the installation of a relatively
inexpensive operator’s station can improve
noise conditions. The operator can see the
equipment in operation and still be protected
from the noise through the installation of
ac ou stical tile double windows, air
conditioning equipment, etc. These working
conditions will normally result in a more
efficient operation and reduce potential
injuries from noise.
Many plant operators are finding that an
operator’s tower erected at an elevation above
most of the equipment provides both safety
features for the operator and increased
efficiency in plant operation.
CLEARING A CRUSHER
There are many unforseen events such as
power failures, sudden surge of materials, etc.,
which can cause a Crusher to become plugged
with material and stall. UNPLUGGING THE
C R U S H E R C A N B E C O M E A V E R Y
SERIOUS POTENTIAL SOURCE OF
ACCIDENTS. In many instances, the only
way in which the Crusher can be restarted is to
literally dig the material out of the crushing
cavity by hand.
GENERAL MAINTENANCE WORK
A certain amount of work must be done in the
immediate area of the Crusher during the
normal course of operations on a day-to-day
basis. The following are some of the do’s and
don’ts to be followed as part of normal crusher
operating procedures.
1
DO NOT perform maintenance on
moving machinery. This includes such
items as adding lubricating oil or
greasing parts of the Crusher while it is
in operation.
2
DO NOT put hands or feet on the
tension springs which project from the
rear of the Crusher while the Crusher is
in operation.
3
DO check the manufacturer’s
recommendations for periodic
maintenance procedures. These
maintenance procedures are designed to
not only avoid damage to the equipment
but also avoid harm to the operator as
well.
4
DO avoid spillage around the Crusher.
Crushers seem to attract odd size pieces
of rock, gravel, etc. Plant operators
should make it a habit to keep the area
immediately adjacent to the Crusher free
from this type of spillage which could
cause unsuspecting personnel to trip and
fall.
5
NEVER look into the crushing cavity
while the Crusher is in operation
without protection from possible flying
material.
Safety
2-8
2-01-B
12/97
