Abstract :
The thesis entitled ?Fleet Sizing Using Simulation Approach and Profitability
Analysis on Investment of I-Trolley in Hard Drive Manufacturer? began with
problem occurred in hard drive manufacturer in determine number of automated
material handling used in production floor. The purpose of automated material
handling is to replace human power in material handling activity due to efficiency
in transportation activity. Hard drive manufacturer decide to use I-Trolley.
Industrial Engineering Department in the project is responsible to determine
optimum number of I-Trolley or can be defined as fleet sizing of I-Trolley and
operator needed to operate I-Trolley. I-Trolley will implemented in the first floor
and there will be two phases of I-Trolley implementation. First phase is
implementation of I-Trolley between backend stream (BES) station to Pack 2
station and second phase will be implemented between lift to BES station. ITrolley
route is closed loop and have two stop point for loading and unloading
activity. Operator requirement in operating I-Trolley is analyzed using time study.
The objectives of this research to have optimum number of I-Trolley based on
minimum material waiting time and maximum capacity in production floor.
The conclusion on optimum number of I-Trolley is 14 with phase one and phase
two respectively need six and eight. ANOVA analysis shows that there is no
significance difference if one I-Trolley added into the scenario. Operator reduced
with I-Trolley implementation is 18 employees. Management decide to accept the
project when investment is feasible in two years. Payback period and Internal
Rate of Return is done and the conclusion is investment feasible in two years.
Sensitivity analysis is also done to support decision making due to maintenance
cost and operator adjustment cost, in example: operator training cost, are
unknown. Decision will not change when maintenance cost is 100 percent of
operation cost and operator adjustment cost is 96 percent of initial investment
cost.