Abstract :
ABSTRACT
PT. Kaltim Prima Coal is one of mining companies move in coal mining.
PT. Kaltim Prima Coal located in Sangata District, Kutai Timur Regency, East
Borneo. PT. Kaltim Prima Coal is used Mining Surface System. The removal
overburden activity used combination of diging and hauling equipment (Liebherr
996S and Dumptruck Hitachi EH4500) to disposal area with distance 3.400
meters.
Using fuel targets are 195 liter/hour. Actual using fuel by Dumptruck are
233,63 liter/hour. Out of target production caused by another segments of the
road has a high slope and uneven road conditions. Effors to increase production
targets used several ways. First make improvement at Loading Point while there
are undulations that have an impact on the high usage of RPM so it must do
smoothing back (re-grade) road using auxiliary equipment Grader. The fuel usage
before the improvement of 233.63 liters / hour and after the improvement was
reduced to 224.03 liters / hour. The fuel ratio to overburden production is also
reduced, before the improvement of 0.95 liters / BCM and after the improvement
to 0.91 liters / BCM. Second way make improvement to the slope of the road.
Slope of the road segment B-C and E-F in excess of standart. The fuel usage
before the improvement of 233.63 liters / hour and after the improvement was
reduced to 216.43 liters / hour. The fuel ratio to overburden production is also
reduced, before the improvement of 0.95 liters / BCM and after the improvement
to 0.88 liters / BCM. The last way used combination of improvement the slope of
the road and improvement at Laoding Point about undulations. The fuel usage
before the improvement of 233.63 liters / hour and after improvement was
reduced to 209.37 liters / hour. The fuel ratio to overburden production is also
reduced, before the improvement of 0.95 liters / BCM and after the improvement
to 0.85 liters / BCM.
Another way to reduce the materials usage can also give insight to the
operator to be more work optimally so that achieving the target fuel that has been
set by the company.