Ghifari, Rizky Nanda (2018) Analisis Pengendalian Kualitas Pada Proses Pengemasan Portland Pozzolan Cement (Ppc) Di Pt Semen Gresik (Persero), Tbk. Pabrik Tuban. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT Semen Gresik (Persero), Tbk. merupakan salah satu perusahaan semen milik negara. Salah satu tahapan proses produksi semen yaitu proses pengemasan semen di seksi Packer and Port yang selama ini sudah melakukan pengendalian kualitas dengan cara cukup sederhana yaitu pie chart. Namun, tidak dapat dipungkiri bahwa setiap hari masih didapatkan kantong semen Portland Pozzolan atau Portland Pozzolan Cement (PPC) yang pecah pada saat proses pengemasan semen. Analisis yang digunakan yaitu diagram Laney p', level sigma, dan diagram ishikawa. Data fase I yang digunakan adalah data release dan pecah bag PPC 40kg dan 50 kg di proyek Tuban 4 tanggal 1 Januari hingga 21 Juni 2017 dan data fase II pada tanggal 1 Juli hingga 31 Desember 2017, di mana hasilnya diagram Laney p' pada fase I yang telah terkontrol secara statistik sebesar 0,00161 dan pada fase II belum terkontrol secara statistik dengan rata-rata proporsi sebesar 0,00161. Hasil perhitungan level sigma yaitu sebesar 4,77. Penyebab terjadinya kantong PPC pecah saat proses pengemasan semen adalah kualitas bahan baku yang belum baik, operator kurang teliti, pengeleman kantong yang masih basah atau kurang sempurna, lingkungan yang lembap, dan keadaan mesin yang sudah aus.=====================================================PT Semen Gresik (Persero), Tbk. is the one of the state-owned cement company. One of the process production stages is the packaging process at the Packer and Port section. This Company has been doing the quality control with a simple method, which is pie chart. However, It can not be denied that there are still some Portland Pozzolan atau Portland Pozzolan Cement (PPC) that broke during the process. The method used to analyze this problem are Laney p' chart, sigma level, and ishikawa chart. Data used for phase I were data release and broken bag PPC 40kg and 50 kg in Tuban 4 from 1st January to 21st June 2017 and phase II data from 1st of July until 31st December 2017. The result of Laney p diagram in phase I was statistically controlled by 0.00161 and in phase II was not statistically controlled with an average proportion of 0.00161. The calculation of sigma level is 4.77. The cause of PPC’s broken bag during the packaging process is the quality of raw material that has not been good, the operator is not careful, the gluing of the bag is still wet or less perfect, the environment is damp, and the machine is worn.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Diagram Laney p', Pecah Kantong PPC, Pengendalian Kualitas, Portland Pozzolan Cement (PPC).===========================Laney p' chart, PPC’s broken bag, Quality Control, Portland Pozzoland Cement (PPC). |
| Subjects: | T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Mathematics, Computation, and Data Science > Statistics > 49201-(S1) Undergraduate Thesis |
| Depositing User: | Rizky Nanda Ghifari |
| Date Deposited: | 09 Jul 2021 09:41 |
| Last Modified: | 09 Jul 2021 09:41 |
| URI: | http://repository.its.ac.id/id/eprint/57380 |
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