Quality Control Analysis Using Statistical Quality Control (SQC) and Fault Tree Analysis (FTA) Methods in Semoga Laris Tofu Factory

Mutiara Qurrota Aini; La Ode Ahmad Safar Tosungku; Suwardi Gunawan

doi:10.22441/ijiem.v5i1.23039

Authors

Mutiara Qurrota Aini Faculty of Engineering, Mulawarman University, Jalan Sambaliung No.9, Samarinda City, East Kalimantan 75119, Indonesia http://orcid.org/0009-0008-3736-5018
La Ode Ahmad Safar Tosungku Faculty of Engineering, Mulawarman University, Jalan Sambaliung No.9, Samarinda City, East Kalimantan 75119, Indonesia
Suwardi Gunawan Faculty of Engineering, Mulawarman University, Jalan Sambaliung No.9, Samarinda City, East Kalimantan 75119, Indonesia

DOI:

https://doi.org/10.22441/ijiem.v5i1.23039

Keywords:

Statistical quality control (SQC), Fault tree analysis (FTA), Product defects, Quality control, Tofu

Abstract

Semoga Laris tofu factory is a business engaged in the production of tofu. This factory produces approximately 80 drums of tofu per day. There are problems faced at this factory, namely the increase in defective products, namely the texture of the tofu that is too soft, dirty tofu, and the shape of the tofu that is too thin. This can lead to decreased consumer confidence. Every day there are at least 10-15% defective products. This study was conducted to determine the types of product defects, the causes of product defects, and propose improvements to minimize defective products in tofu processing. The methods used in this research are Statistical Quality Control (SQC) and Fault Tree Analysis (FTA). The quality tools of SQC method are check sheet, histogram, pareto diagram, P control map, and fishbone diagram. Then proceed using the Fault Tree Analysis (FTA) method to determine suggestions and corrective actions. Based on the results of research using the SQC method, it is known that the number of thin size defects is 46.231, there is dirt on the tofu as many as 16.093 seeds, and the texture of soft tofu is 27.357 seeds. The results of the analysis using the fault tree analysis (FTA) method show that the causes of product defects include insufficient rest time (D2), irregular machine maintenance (E2), insufficient rest time (F1), and no temperature checker. Proposed improvements that can be given are by providing measuring instruments, making machine maintenance schedules, making machine control cards, giving breaks, supervising, giving gifts to workers, and providing thermometers.

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References

Andarwulan, N., Nuraida, L., Adawiyah, D. R., Triana, R. N., Agustin, D., & Gitapratiwi, D. (2018). Pengaruh Perbedaan Jenis Kedelai terhadap Kualitas Mutu Tahu. Jurnal Mutu Pangan, 5(2), 66–72.

Andespa, I. (2020). Analisis Pengendalian Mutu Dengan Menggunakan Statistical Quality Control (SQC) pada PT.Pratama Abadi Industri (JX) Sukabumi. E-Jurnal Ekonomi Dan Bisnis Universitas Udayana, 129. https://doi.org/10.24843/eeb.2020.v09.i02.p02

Argo, J. G., Nastiti, H., & Colia, R. S. (2019). Analysis Quality Control of Tofu Products in Pondok Labu Jakarta Selatan. Jurnal Ilmu Ekonomi dan Sosial, 8(3), 111–127. http://dx.doi.org/10.22441/jies.v8i3.7262

Ariani, D. W. (2020). Manajemen kualitas (2nd ed., p. 592). Tangerang Selatan: Universitas Terbuka.

Bakhtiar, S., Tahir, S., & Ria Asysyifa Hasni. (2013). Analisa Pengendalian Kualitas Dengan Menggunakan Metode Statistical Quality Control (SQC). Industrial Engineering Journal, 2(1). https://doi.org/10.53912/iejm.v2i1.26

Djamal, N., & Azizi, R. (2015). Identifikasi dan Rencana Perbaikan Penyebab Delay Produksi Melting Proses dengan Konsep Fault Tree Analysis (FTA) di PT. XYZ. Jurnal Intech Teknik Industri Universitas Serang Raya, 1(1), 34–45. https://doi.org/10.30656/intech.v1i1.154

Fath, M. S. A., & Darajatun, R. A. (2022). Tinjauan Perancangan Produksi dan Kualitas Pada Produk Rak Dies di CV Sarana Sejahtera Tehnik. Jurnal Ilmiah Wahana Pendidikan, 8(2), 159–168. https://doi.org/10.5281/zenodo.6105126

Friscilla, N., Syamsudin, A., & Hidayat, D. R. (2021). Analisis Pengendalian Kualitas Produk untuk Meminimumkan Produk Gagal Pada Pabrik Roti Prabu Bakery. JEMBA : Jurnal Ekonomi Pembangunan, Manajemen Dan Bisnis, Akuntansi, 1(1), 29–35. https://doi.org/10.52300/jemba.v1i1

Hairiyah, N., & Amalia, R. R. (2020). Pengendalian Kualitas Produk Tahu Menggunakan Metode Six Sigma di UD. Sumber Urip. Agrointek, 14(1), 14–23. https://doi.org/10.21107/agrointek.v14i1.5222

Hairiyah, N., Amalia, R. R., & Luliyanti, E. (2019). Analisis Statistical Quality Control (SQC) pada Produksi Roti di Aremania Bakery. Industria: Jurnal Teknologi dan Manajemen Agroindustri, 8(1), 41–48. https://doi.org/10.21776/ub.industria.2019.008.01.5

Hidayatullah Elmas, M. S. (2017). Pengendalian Kualitas dengan Menggunakan Metode Statistical Quality Control (SQC) untuk Meminimumkan Produk Gagal pada Toko Roti Barokah Bakery. Wiga : Jurnal Penelitian Ilmu Ekonomi, 7(1), 15–22. https://doi.org/10.30741/wiga.v7i1.330

Japina, H. (2017). Pengendalian Manajemen atas Sistem Informasi. Jurnal Ilman, 5(1), 25–32.

http://journals.synthesispublication.org/index.php/ilman

Kartikasari, V., & Romadhon, H. (2019). Analisa Pengendalian dan Perbaikan Kualitas Proses Pengalengan Ikan Tuna Menggunakan Metode Failure Mode And Effect Analysis (FMEA) dan Fault Tree Analysis (FTA) Studi kasus di PT XXX Jawa Timur. Journal of Industrial View, 1(1), 1–10. https://doi.org/10.26905/2999

Pamukti, K. B., & Juwitaningtyas, T. (2021). Evaluasi Penerapan Prinsip-prinsip Sanitasi Industri dan Higiene Karyawan. Jurnal Teknologi Pangan Dan Hasil Pertanian, 16(2), 45. https://doi.org/10.26623/jtphp.v16i2

Pujoalwanto, B. (2014). Perekonomian indosnesia: Tinjauan historis, teoritis, dan empiris (1st ed., p. 261). Yogyakarta: Graha Ilmu.

Putri, D. I., & Ngatilah, Y. (2021). Analisis Kualitas Produk Console Table dengan Menggunakan Metode Fault Tree Analysis (FTA) dan Failure Mode and Effect Analysis (FMEA) di PT. Romi Violeta Sidoarjo. JUMINTEN, 2(5), 97–108. https://doi.org/10.33005/juminten.v2i5

Rizka, N., & Khasanah, K. (2023). Identifikasi Formalin dan Analisa Kualitas Mutu (Kadar Air, Kadar Abu, Kadar Protein) Tahu Putih di Pasar Banyurip Pekalongan. Pena Jurnal Ilmu Pengetahuan Dan Teknologi, 37(1), 63–63. https://doi.org/10.31941/jurnalpena.v37i1.2890

Satriyo, B., & Puspitasari, D. (2017). Analisis Pengendalian Kualitas Dengan Menggunakan Metode Fault Tree Analysis Untuk Meminimumkan Cacat pada Crank Bed Di Lini Painting PT. Sarandi Karya Nugraha. Industrial Engineering Online Journal, 6(1). https://ejournal3.undip.ac.id/index.php/ieoj/article/view/15936

Solahudin, Y., Rusmalah, M., & Muhlisin, I. (2021). Perbaikan Kualitas Produk Pipa HDPE dengan Menggunakan Metode Statistical Quality Control (SQC) Dan Fault Tree Analysis (FTA) di PT. ICMI. Prosiding Semnasti UNPAM, 92–102.

Sutopo, S. (2021). Analisis Manajemen Produksi Dalam Meningkatkan Feisiensi Biaya Dan Tingkat Laba Pabrik Air Minum PT Graha Mas Intirta Kuningan. STIE Sebelas April Sumedang.

Wahyuni, H. C., Sulistiyowati, W., & Khamim, M. (2015). Pengendalian kualitas : aplikasi pada industri jasa dan manufaktur dengan Lean, Six Sigma dan Servqual (1st ed., p. 140). Yogyakarta: Graha Ilmu.