A SIMULATION STUDY FOR THE DESIGN
OF A TRAIN MAINTENANCE DEPOT
Dug Hee Moon
Dept. of Industrial & Systems Engineering
Changwon National University
Changwon, Gyeongnam, 641-773, KOREA
dhmoon@changwon.ac.kr
Ku Kil Chang
Division of PLM Solution
Daewoo Information Systems Co., Ltd
Samil Build., Gwancheol-dong, Seoul, 100-748, KOREA
brastor@disc.co.kr
Seung Geun Baek
Dept. of Industrial & Systems Engineering
Changwon National University
Changwon, Gyeongnam, 641-773, KOREA
skyarare@changwon.ac.kr
Keywords; train, maintenance depot, design, simulation
ABSTRACT
This paper introduces a simulation study regarding the
design for a train maintenance depot in Korea. The major
functions of depot are maintenance of trains as scheduled
and storage place for the trains when they are waiting for
departure. The company who were bidding to the
construction of the depot is requested to include the
report of simulation by Korean National Railroad. Thus
the company should prepare numerous alternatives and
select a best layout of the depot that meets to the
proposed service level targets indicated by the client.
In the early phase of design the depot only basic
information regarding the railway system is given to the
designer but not detail operating strategy. However the
simulation study can suggest not only a best design but
also give the comprehension of operating policies. It also
proved to be an excellent communication tool during the
bid process.
In this paper a case study for train maintenance depot in
Korea is introduced. The procedure of simulation
modeling using ARENATM is explained and the result of
simulation for various layouts is evaluated. We also
investigate the effect of assignment policy that allocate
maintenance operations to the relating facilities.
1. INTRODUCTION
Simulation modeling has several key uses within the
decision making process. Discrete event simulation has
been traditionally associated with manufacturing systems
with applications areas such as production planning and
control and layout design. However, its use in service
applications is growing gradually in SOC system
including railway system, airport system and harbor
system.
There are many challenging areas of simulation applied
to railroad system (Krueger et al. 2000).
? Asset Based Simulations
? Train Operation simulations
? Line and terminal capacity simulations
? Traffic/service simulations
? Rail/non-rail interface simulations
Leilich (1998) discussed issues which simulation
can address, where quantitative results cannot be derived
by any other method, in a railway system. For example,
the capacity problem of North Carolina Corridor, the
capacity problem of Memphis Terminal and many other
operating problems in a railway system are addressed in
this paper. For the area of train operation simulation,
Hooghiemstra and Teunisse (1998) presented the use of
simulation for designing timetable in Dutch Railway
Service. Lingaya et al. (2002) considered a modeling and
solution methodology for a car assignment problem in a
VIA Rail Canada, that arises when individual car
routings that satisfy all operational constraints must be
determined.
In spite of the high investment for construction there
have not been many researches regarding the capacity
design of a maintenance depot. Greasley (2000)
presented the construction of discrete event simulation
model of a proposed train maintenance depot for an
underground transportation facility on the UK. However
the depot system considered in this paper is an existing
system and it is different from ours.
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