Uko, Hendricha Susanty (2011) Analisis risiko kualitas produk pada proses produksi semen di PT Semen Gresik Pabrik Tuban I. Bachelor thesis, Universitas Pelita Harapan.
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Abstract
Dalam upaya menghasilkan produk berkualitas, PT Semen Gresik Pabrik
Tuban I seringkali menghadapi berbagai risiko dalam bentuk kerusakan atau
gangguan selama proses produksi semen. Oleh karena itu, dibutuhkan adanya
pengawasan dan pengendalian secara terus menerus untuk mengurangi
kemungkinan terjadinya risiko-risiko kualitas tersebut.
Pada penelitian ini, digunakan metode FMEA untuk mengidentifikasi
risiko-risiko kualitas dalam proses produksi semen dan melakukan penilaian
terhadap tingkat kemungkinan terjadinya risiko serta tingkat keseriusan dampak
yang dapat ditimbulkan. Hasil FMEA menunjukkan bahwa terdapat 19 risiko
kualitas dalam proses produksi semen. Dari 19 risiko kualitas yang teridentifikasi,
melalui probability-impact matrix, dapat diketahui risiko-risiko yang tergolong
kritis dan harus segera dimitigasi. Risiko-risiko kritis tersebut antara lain, risiko
material basah, flushing, kebuntuan transportasi dan material berukuran besar.
Simulasi Monte Carlo digunakan dalam mengevaluasi risiko kritis yang
dipengaruhi oleh faktor internal dan dapat dikontrol. Risiko tersebut yakni
kebuntuan transportasi material yang disebabkan karena kerusakan peralatan
transportasi akibat kurangnya pemeliharaan. Dalam hal ini, simulasi dilakukan
untuk mengetahui rata-rata waktu kerusakan dan rata-rata waktu perbaikan
sehingga dapat ditentukan kapan waktu pemeliharaan yang optimal dapat
dilakukan. Hasil simulasi menunjukkan bahwa rata-rata waktu kerusakan adalah
setelah peralatan beroperasi selama 115.1636 jam dengan rata-rata waktu
perbaikan selama 1.1624 jam. Dengan demikian upaya mitigasi yang dapat
dilakukan adalah dengan melakukan pemeliharaan pencegahan sebelum rata-rata
waktu kerusakan tersebut. Mitigasi lainnya terhadap risiko-risiko kritis antara lain
meliputi pemeliharaan kebersihan mesin, inspeksi rutin selama proses produksi
berlangsung, penambahan jumlah operator, dokumentasi FMEA serta peningkatan
koordinasi dan komunikasi. / In an effort to produce quality products, PT Semen Gresik Pabrik Tuban I
often face various risks in the form of damage or disruption during production
process. Therefore, needed the supervision and controlling during production
process to minimize probability of quality risk occurrence.
In this research, FMEA is used to identify quality risks in cement
production process and to assess the level of risk probability (occurrence) and risk
impact (severity). FMEA results indicate that there are 19 quality risks in cement
production process. Through probability-impact matrix, can be seen that there are
some critical quality risks and must be mitigated. Critical risks include, the risk of
wet material, flushing, disruption of material transportation and size of material
that too big (out of material specification).
Monte Carlo simulation are used to evaluate critical risks that influenced
by internal factors and controllable factors. The risk is disruption of material
transportation that caused by machine failure due to lack of machine maintenance.
In this case, the simulations are performed to determine mean time between
failure and mean time to repair, so can be decided when the optimal preventive
maintenance can be performed. The simulation results show that the mean time
between failure is 115.1636 hours and mean time to repair is 1.1624 hours. Thus,
mitigation effort that can be done is through preventive maintenance before that
mean time between failure. Other mitigations of critical risks include maintenance
of machine cleanliness, routine inspection during production process, increasing
the number of operators, FMEA documentation, and communication and
coordination improvement.
Item Type: | Thesis (Bachelor) |
---|---|
Creators: | Creators NIM Email ORCID Uko, Hendricha Susanty NIM03320080017 UNSPECIFIED UNSPECIFIED |
Contributors: | Contribution Contributors NIDN/NIDK Email Thesis advisor Trihastuti, Dian UNSPECIFIED UNSPECIFIED Thesis advisor Purba, Lasman P. UNSPECIFIED UNSPECIFIED |
Subjects: | T Technology > T Technology (General) > T55.4-60.8 Industrial engineering. Management engineering |
Divisions: | University Subject > Current > Faculty/School - UPH Surabaya > Faculty of Science and Technology > Industrial Engineering Current > Faculty/School - UPH Surabaya > Faculty of Science and Technology > Industrial Engineering |
Depositing User: | Rafael Rudy |
Date Deposited: | 25 Jan 2024 06:45 |
Last Modified: | 25 Jan 2024 06:45 |
URI: | http://repository.uph.edu/id/eprint/60518 |