|
Assessment of performance of a fine coal processing plant
through availability analysis and the Mann-Whitney U test
for two samples
Huseyin Ankara1 and Suheyla Yerel2*
1Mining
Engineering Department, Eskisehir Osmangazi University,
Eskisehir, Turkey.
2Civil
Engineering Department, Bilecik University, Bilecik, Turkey.
*Corresponding author. E-mail:
suheyla.yerel@bilecik.edu.tr,
syerel@gmail.com.
Accepted 4 January, 2010 |
|
In this study, the Mann-Whitney U test for two sample and
availability analysis are applied on equipments belonging to
a heavy dense cyclone
circuit in a fine coal processing plant. Through the
results from the Mann-Whitney U test for two samples, it is
determined that the coal sieves fed by the upper flow of the
cyclone (S25, S26 and S27)
and the coal sieves fed by the lower flow of the cyclone (S28
and S29) are identical. Using availability
analysis, the performances of the cyclone pump engine (CPE),
the cyclone pump (CP) and the coal sieves are calculated. As
the result of this analysis, it is found that the
performances of these equipment ranges from 96.60 - 98.99%
and that they operate with a high performance. As a result,
it is determined that the performances of the equipment can
be calculated using availability analysis and that the
Mann-Whitney U test for two samples supports this analysis.
Additionally, it is believed that these methods may help the
monitoring of equipment in complex facilities and help
improve fine coal processing plants.
Key words:
Availability analysis, the Mann-Whitney U test for two
samples, fine coal processing plant, cyclone circuit. |
