Pengendalian Kualitas Kantong Semen di PT. Industri Kemasan Semen Gresik Menggunakan Peta Kendali Demerit dan Fuzzy Demerit
Submission Date: 2018-07-27 15:52:47
Accepted Date: 2019-02-09 00:00:00
Abstract
PT. Industri Kemasan Semen Gresik (PT. IKSG) merupakan salah satu anak perusahaan dari PT. Semen Gresik Tbk. (persero) yang bergerak dalam bidang pembuatan kantong semen. Seiring perkembangannya, PT. IKSG selalu berupaya meningkatkan mutu layanan dan kualitas produknya. Dalam menentukan kualitas produk, perusahaan melakukan pengendalian berupa menghitung proporsi cacat setiap line yang dibandingkan dengan batas toleransi kebijakan perusahaan. Pengendalian kualitas yang telah dilakukan tersebut memiliki kesamaran dalam memutuskan apakah proses pembuatan kantong semen telah terkendali sehingga perlu dilakukan pengendalian kualitas secara statistika. Pengendalian kualitas yang dilakukan menggunakan peta kendali demerit dan fuzzy demerit. Hasil peta kendali demerit dan fuzzy demerit menunjukkan proses produksi kantong semen jenis pasted di semua line selama periode Januari – Desember 2017 belum terkendali secara statistik. Peta kendali fuzzy demerit lebih sensitif dibandingkan dengan peta kendali demerit, dimana hal ini ditunjukkan oleh lebih banyaknya titik pengamatan out of control yang dapat ditangkap oleh peta kendali fuzzy demerit daripada peta kendali demerit. Adanya pengamatan out of control dominan disebabkan oleh faktor manusia dalam proses pembuatan adonan lem, penyetelan mesin dan bahan baku di awal produksi, kebersihan mesin, dan pemakaian mesin saat dilakukan perbaikan.
Keywords
Kantong Semen; Pengendalian Kualitas; Peta Kendali Demerit; Peta Kendali Fuzzy Demerit
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