Authors :
Masayu Rosyidah; Isdaryanto
Volume/Issue :
Volume 7 - 2022, Issue 8 - August
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3TVcKYO
DOI :
https://doi.org/10.5281/zenodo.7063473
Abstract :
PT. XYZ processes rubber raw materials from
suppliers in the form of slabs to be processed into semifinished rubber (crumb rubber) to meet customer needs.
In its activities there are jobs that do not have added value
(non-value added) which can cause inefficiency due to
waste. Currently, at the warehouse for receiving raw
materials, truck weighing officers have to wait because of
the uncertainty of the number of suppliers who come every
day, as well as the waiting time for packaging. The purpose
of this study is to identify the waste that occurs with the
value stream mapping method. Based on the Waste
Relationship Matrix, the most dominant waste is in waiting
and transportation with a weight of 16% each. In the
process cycle efficiency of 63.87%, it means that the
process that occurs is still wasteful which does not add
value to the customer. From the observations, there are 6
types of waste that occur, namely waiting, transportation,
unnecessary motion, overprocessing, inventory, and
defects. Several steps that can be taken to minimize waste
include strengthening external cooperation, making
schedules, and determining weekly delivery targets by
suppliers; Addition or change of means of transportation
as well as the addition of the number of machine operators;
Scheduling product delivery to consumers; Production
scheduling according to the number of consumer requests;
Stricter sorting of raw material purchases; as well as
regular checks on production machines, especially rusty
machines.
Keywords :
Component; Minimalize; Non Valur Added; Value Stream Mapping; Waste
PT. XYZ processes rubber raw materials from
suppliers in the form of slabs to be processed into semifinished rubber (crumb rubber) to meet customer needs.
In its activities there are jobs that do not have added value
(non-value added) which can cause inefficiency due to
waste. Currently, at the warehouse for receiving raw
materials, truck weighing officers have to wait because of
the uncertainty of the number of suppliers who come every
day, as well as the waiting time for packaging. The purpose
of this study is to identify the waste that occurs with the
value stream mapping method. Based on the Waste
Relationship Matrix, the most dominant waste is in waiting
and transportation with a weight of 16% each. In the
process cycle efficiency of 63.87%, it means that the
process that occurs is still wasteful which does not add
value to the customer. From the observations, there are 6
types of waste that occur, namely waiting, transportation,
unnecessary motion, overprocessing, inventory, and
defects. Several steps that can be taken to minimize waste
include strengthening external cooperation, making
schedules, and determining weekly delivery targets by
suppliers; Addition or change of means of transportation
as well as the addition of the number of machine operators;
Scheduling product delivery to consumers; Production
scheduling according to the number of consumer requests;
Stricter sorting of raw material purchases; as well as
regular checks on production machines, especially rusty
machines.
Keywords :
Component; Minimalize; Non Valur Added; Value Stream Mapping; Waste
