The system begins after receiving parts from supplier in the
containers at the receiving area which also called temporary storage
area. The manpower at the receiving area will arrange the containers
at the flow racks. When the signal order received, the parts
will be supplied to the supermarket area next to the assembly line.
The shopping man at the supermarket area received the Assembly
Instruction Sheet (AIS); which contains the car sequence number
and information for the assembly operator from the
Manufacturing Execution System (MES). The shopping man reviews
the information on the AIS which is printed at printer A. Next, the
shopping man searches and picks the required parts from the flow
racks at the supermarket area. The parts are placed on the SPS trolley
until the trolley contains a full set of parts. The trolley is subsequently
pushed to the first workstation on the assembly line. The
trolley is placed between the workstation and is tied at the conveyor
hanger. All of the trolleys carrying a set of parts follow the
door sequence or in this paper it is called as Work In Process
(WIP) and are synchronized with the assembly line. Finally, the
shopping man pulls the empty trolley from the last workstation
back to the supermarket area and the process of selection and picking
repeats.