Cahyani, Fitrah Indra (2015) Analisis Pengendalian Kualitas Proses Pengantongan Semen Di PT Semen Indonesia (Persero) Tbk Dengan Pendekatan Six Sigma. Undergraduate thesis, Institut Teknology Sepuluh Nopember.
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Abstract
Pengendalian kualitas proses pengantongan semen yang dilakukan
di PT Semen Indonesia (Persero) Tbk, selama ini dengan cara yang
sederhana yaitu menggunakan diagram pareto, dimana informasi yang
diperoleh hanya mengidentifikasi jenis cacat yang paling sering terjadi.
Berdasarkan hasil proses pengantongan semen pada bulan Desember
2014, jumlah produk yang reject adalah 4,84%, jika dikonversikan ke
level sigma menjadi 4,09 sigma. sehingga permasalahan dalam
penelitian ini adalah menentukan level sigma untuk bulan selanjutnya.
Untuk mencapai tujuan tersebut maka dilakukan analisis menggunakan
peta kendali p multivariat, level sigma, diagram pareto dan diagram
ishikawa. Data yang digunakan adalah data release packer bag kantong
semen PPC 50 kg Tuban 4 bulan Januari dan februari 2015, dimana
hasilnya peta p multivariat belum terkendali secara statistik, dengan
level sigma pada bulan Januari 2015 sebesar 4,10 dan pada bulan
Februari 2015 sebesar 4,12 sehingga level sigma mengalami kenaikan
sebesar 0,02. Penyebab terjadinya produk cacat adalah kualitas bahan
baku yang belum baik, karyawan kurang teliti dan kelelahan,
lingkungan berdebu, keadaan mesin yang sudah aus, plat besi dan spot
yang sudah tua.
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During this time controll quality of packing process which is done
by PT Semen Indonesia (Persero) Tbk still using a simple way that
called Pareto diagram, where the information which is obtained only
identify the type of most often defect case. Based on the result of cement
packing process on December 2014, number of rejected products was
4,84%, if this result was converted into sigma level became 4,09 sigma.
So the problem in this research was determine the sigma level for the
next month. To achieve that goal then conducted analyzes using p
multivariate control chart, sigma level, Pareto diagram, and Ishikawa
diagram. The data that used was release packer bag data of cement bag
PPC 50kg in Tuban 4 on January to Februari 2015, where the result
was p multivariate control chart has not controlled statistically, with
sigma level on January 2015 was 4,10 and on February 2015 was 4,12
so the sigma level increased by 0,02. The cause of defective products
was the quality of the products which was not good enough, the
employees were less conscientious and too tired, dusty environment, the
machine that almost out of date, old iron plate and spot.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSSt 658.562 Cah a |
| Uncontrolled Keywords: | Proses Pengantongan Semen, Peta Kendali p Multivariat, DMAIC, Diagram Pareto, Diagram Ishikawa |
| Subjects: | T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Mathematics and Science > Statistics > 49201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 16 Oct 2019 04:10 |
| Last Modified: | 16 Oct 2019 04:10 |
| URI: | http://repository.its.ac.id/id/eprint/71209 |
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