Pengendalian Kualitas Kantong Semen Di PT. Industri Kemasan Semen Gresik Menggunakan Peta Kendali Demerit Dan Fuzzy Demerit

Putri R, Nanda Eka (2018) Pengendalian Kualitas Kantong Semen Di PT. Industri Kemasan Semen Gresik Menggunakan Peta Kendali Demerit Dan Fuzzy Demerit. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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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. ========================================================================================== PT. Industri Kemasan Semen Gresik (PT IKSG) is one of the subsidiaries of PT. Semen Gresik Tbk. (Persero) engaged in the manufacture of cement bags. Along its development, PT. IKSG always strives to improve the quality of its services and product quality. In determining the quality of the product, the company calculated the proportion of defects in each line then compared it to the company's policy tolerance limits. Quality control that has been done by the company has a vagueness in deciding whether the process of making the cement bags has been controlled or not, so it is necessary to do statistical quality control. The quality control is performed by using demerit and fuzzy demerit control charts. The results of demerit and fuzzy demerit control charts show that the production process of pasted cement bags in all lines during the period January - December 2017 has not been statistically controlled. The demerit fuzzy control chart is more sensitive than the demerit control chart, which is indicated by more out of control observation points that can be captured by fuzzy demerit control charts rather than classical demerit control charts. The presence of out of control observations is caused by human factors in the process of making glue dough, setting the machine and materials at the beginning of production, cleanliness of the engine, and using the machine when it is being repaired.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Kantong Semen, Pengendalian Kualitas, Peta Kendali Demerit, Peta Kendali Fuzzy Demerit
Subjects: T Technology > TS Manufactures > TS156 Quality Control. QFD
Divisions: Faculty of Mathematics, Computation, and Data Science > Statistics > (S1) Undergraduate Theses
Depositing User: Nanda Eka Putri R
Date Deposited: 22 Jan 2019 02:29
Last Modified: 22 Jan 2019 02:29
URI: http://repository.its.ac.id/id/eprint/53660

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