PENGENDALIAN KUALITAS PRODUK PC SPUN PILE DENGAN MENGGUNAKAN METODE SIX SIGMA PADA PT. JAYA BETON INDONESIA SURABAYA

Abstrak

Six Sigma is a method used by companies in determining the possibility of zero defect product defects in the
production process. The six sigma method uses calculations to analyze the level of defects in production and makes
an opportunity to analyze defect factors in PC spun pile products at PT. Jaya Beton Indonesia. The purpose of
this study was to determine the value of six sigma on the quality of PC Spun pile to reduce the level of product
defect and failure factors. The method used in this study uses the six sigma method with stages of conducting
interviews, checking product reject reports, and analysis in the field. The results of PC spun pile quality control
at PT. Jaya Beton Indonesia shows a six sigma value of 3.46. Types of product defects include crack defects
(68.42%), less thickness (10.53%), visible seamline (7.89%), non-conforming joints (7.89%), perforated (5.26%)
with factors causing product defects, namely from labor factors, work methods, and machines. Proposals to reduce
product defects include rechecking each workmanship, increasing supervision in each process, adding supervision
at the tension or iron withdrawal stage, carrying out processes in accordance with the applicable WI, and checking
tools regularly