| Author | Chawalrath Aramsri |
| Call Number | AIT Thesis no. ISE-96-01 |
| Subject(s) | Scheduling (Management)
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of
Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ISE-96-01 |
| Abstract | The extent to which work in process inventory (WIP) is controllable in a flowshop
production depends upon the interactions among material handling batch size, job scheduling
and machine assignment. This paper addresses to the issue of job assignment, scheduling rule
and job release in a practical flowshop environment.
The case study pertains to rice cooker production line in a real factory. The company
has been producing the products in a job shop type environment but the problems of large of
work in process inventory and confusing machine sharing assignments are encountered
frequently. The management is thinking now, to organize the production as in a flowshop. This
presumably would lead to better production control. However, the management would like to
keep the number of machines to be the same as today. The rice cooker production involves
part fabrication and assembly .
Following this case study, we try to develop each pait of product to produce in artificial
temporary machine flow lines without buffer inventory between machine. This concept was
used by set it up when the parts are going to produce. Preemption all of machine that pait
processing required is applied and connecteq together to be artificial process flow lines. The
temporary flow line was give up when the whole processing of that part was complete. For the
next step production, machine will be reset for the others parts as their processing route pattern
and so on. Beyond this concept, we also group the machine flow line together and name each
group as "Room''. The room will consist of machine flow line at least a set unique and control
numbers of machine each type not over the existing. We try to put the most active machine
flow line in the same room and minimize the number of rooms at least as possible. When the
production starts, only one room is active but the others jobs required another route, flow line,
appeared in the same room may be produced simultaneously. Until all of jobs processing in the
room are completely processed. The room could be closed and then open the other one trial
scheduling list for next production.
The production environment is described and needed terminology, notation is defined.
Examination of the research literature reveals a primary emphasis on static scheduling
methods. Application of static methods in a dynamic environment is evaluated, both
conceptually and empirically. We conclude that the additional research is needed to develop
batch size, transfer batch size, job release and scheduling rules for this practical flowshop
environment, especially if automation is contemplated. |
| Year | 1996 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ;no. ISE-96-01 |
| Type | Thesis |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Industrial Systems Engineering (ISE) |
| Chairperson(s) | Pandey, P. C.; |
| Examination Committee(s) | Anulark Pinnoi;Do, Ba Khang; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1996 |