APPLICATION OF FTA AND FMEA METHOD TO IMPROVE SUGAR PRODUCTION PROCESS QUALITY

Abstract

Defective product is a product that has poor quality and do not meet the standart. This defective products
can give a bad impact to company, such as high production costs and decreased image company. Several
methods that can be used to improve the quality is Six Sigma DMAIC methodology, FTA, and FMEA
method. This study is conducted for several purpose, they are to determine the value of sigma level on the
process of sugar production in PT.PG. Krebet Baru, to determine the factors that cause defective
products in the process of sugar production by the FTA method, and to make a suitable solution based on
the FMEA defective causes. The process sigma level in PT.PG.Krebet Baru is 3.58. That value sigma
level indicates PT. PG. Krebet Baru is a company that are still growing and need improvement. The
primary cause of the defects in the production process is a factor of operator and machine. Mode of
failure with the highest RPN at 210 is time for steam process is too long, so they need to install the
equipment that can detect the water level on sugar. When this equipment is installed, the exact time for
drying will be known and the amount of defective product will be decreased.
Keywords : Defective Product, Six Sigma, DMAIC, FTA, FMEA.