Abstract:
This thesis aims to study the operation within bakery business supply chain in the Muang
district, Chiang Rai. This research aims to reduce waste and propose improvements to enhance the
supply chain of bakery business. This research was mixed research by using qualitative research
and quantitative research. The researcher conducted interview and observation of operation of
entrepreneurs and employees to get timing information of the conclusion of the operation.
Moreover, conclusion used of analysis tools by using the value stream mapping ( VSM), the
planning and controlling of the program by using program evaluation and review technique (PERT)
to analyze of bakery business. The results found that activities in the bakery business were 11
activities, the total duration of the activities were 660 minutes. It can be divided into three types of
activities such as valued added (VA), necessary but non-value added (NNVA), and non-value added
(NVA). There are two activities that valued added to the average duration of all 304 minutes of the
period, representing 48.43 %of all operations. The activities are all necessary, but non-value added
to the average length of all eight about 308 minutes, representing 49.05 % of all operations.
Activities that non-value added have the average of duration 16 minutes, representing 2.51% of all
operations. After redundant activities and decrease the waiting time of the operation, it may result
in a period of consolidation and decreased activity of 108 minutes, representing 16.37% of the time
spent in all operations. Moreover, entrepreneur can increase the production cycle and can meet the
needs of their customers.