Learning Events 4 and 5
Learning Event 4
DESCRIBE MAINTENANCE CONSIDERATIONS
Quarrying and crushing operations involve a wide variety of equipment and severe operating conditions.
You should provide an on-site maintenance facility whenever practicable to minimize equipment repair
time and maintain production. In addition to normal repair and maintenance capabilities, this facility
should also be equipped for heavy-duty welding to repair shovel tracks and dippers, rebuild crusher jaws
and rolls, repair truck beds, and for numerous other repair jobs that occur frequently. Provision should
also be made for repairing tires, resharpening drill bits, and reconditioning drill steels. On large sites,
contact trucks should be used to provide routine maintenance services directly to the operating
equipment.
Learning Event 5
DESCRIBE ACCESS ROAD CONSIDERATIONS
You should construct access roads to the vicinity of the quarry and plant. Normally the access roads, or
portions of them, will also be the haul roads from the quarry to the crusher and from the crusher to the
customer units. Careful consideration should be given to the types and amount of traffic to which the
roads will be subjected. For example, the access road to a quarry using a two-cubic yard power shovel
must be designed to carry a load in excess of 60 tons. Roads should be surfaced with crushed rock and
drained to reduce maintenance requirements. To reduce wear and tear on tires, the road surfaces should
be kept smooth by constant shaping with a grader and free from large pieces of quarry run rock. Water
should be applied to control dust in dry weather.
41
Previous Page
