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All Journal Buletin Utama Teknik Jurnal Sosiologi Pendidikan dan Pendidikan IPS (SOSPENDIS)
Abdurrozzaq Hasibuan
Program Studi Teknik Industri, Fakultas Teknik, Universitas Islam Sumatera Utara
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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ANALISIS PENGOLAHAN LIMBAH PADAT DAN CAIR INDUSTRI KERIPIK SINGKONG TERHADAP LINGKUNGAN MASYARAKAT Anisa Fitri Handaris Purba; Sefira Aulia Harahap; Widyana; Abdurrozzaq Hasibuan
SOSPENDIS : Sosiologi Pendidikan dan Pendidikan IPS Vol. 1 No. 3 (2023): Jurnal Sosiologi Pendidikan dan Pendidikan IPS (SOSPENDIS)
Publisher : CV. ADIBA AISHA AMIRA

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Abstract

Introduction: Waste is the result of residue or waste from a production activity, such as the cassava chips industry which produces solid and liquid waste in its production activities. Both types of waste will have a negative impact if the waste is not treated. The waste from processed cassava which often has a negative impact is liquid waste. The aim of this research is to analyze the processing of solid waste and liquid waste generated from the cassava chips industry and their impact on the environment. Method: This research is a qualitative research. Data obtained from direct observation and interviews. The research subjects are the cassava chip industry owners and the longest-serving workers in the industry. The research instruments consisted of researchers, interview question texts, stationery, and voice recorders. Presentation of data descriptively based on the results as they are. Result: Some of the waste generated is processed and some is not processed. Solid waste that is not processed is waste cassava peels and cassava cobs. The sediment waste from cassava soaking water is processed into mocaf flour. Meanwhile, the liquid waste produced is not processed. Conclusion: The cassava chips industry studied only produces mocaf flour as a new product from the utilization of the waste produced. The impact of cassava chips liquid waste is to contaminate water and soil, and stagnant wastewater becomes a breeding ground for disease vectors
ANALISIS DAN USULAN PERBAIKAN PROSES DISTRIBUSI BAJA RINGAN MENGGUNAKAN PENDEKATAN LEAN SYSTEM UNTUK MENINGKATKAN EFISIENSI OPERASIONAL DI PT. TRI MUSTIKA SEJAGAT Adelia Putri Nasution; Abdurrozzaq Hasibuan; Wirda Novarika AK; Budhi Santri Kusuma
Buletin Utama Teknik Vol 21, No 3 (2026): Edisi Mei
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/but.v21i3.14136

Abstract

Peningkatan efisiensi operasional dalam proses distribusi merupakan aspek yang sangat penting bagi perusahaan manufaktur dan distribusi, khususnya di tengah persaingan industri baja ringan yang semakin ketat. Proses distribusi yang tidak efisien berpotensi menimbulkan pemborosan (waste), keterlambatan pengiriman, serta peningkatan biaya operasional yang berdampak langsung pada kepuasan pelanggan dan kinerja perusahaan. Penelitian ini bertujuan untuk menganalisis proses distribusi baja ringan di PT. Tri Mustika Sejagat serta mengusulkan perbaikan proses menggunakan pendekatan Lean System guna meningkatkan efisiensi operasional. Metodologi penelitian yang digunakan meliputi pemetaan aliran proses distribusi dengan Value Stream Mapping (VSM), identifikasi pemborosan berdasarkan konsep seven wastes, serta analisis akar penyebab menggunakan diagram sebab-akibat. Usulan perbaikan difokuskan pada penyederhanaan alur distribusi, pengurangan waktu tunggu, perbaikan tata letak penyimpanan, dan peningkatan koordinasi antarbagian. Hasil penelitian menunjukkan adanya pemborosan dominan berupa waiting, transportation, dan overprocessing yang menyebabkan waktu distribusi menjadi tidak optimal. Implementasi usulan perbaikan berbasis Lean System terbukti mampu menurunkan waktu siklus distribusi, mengurangi aktivitas tidak bernilai tambah, serta meningkatkan efisiensi operasional secara signifikan. Implikasi penelitian ini memberikan kontribusi praktis bagi manajemen PT. Tri Mustika Sejagat dalam merancang sistem distribusi yang lebih ramping, efektif, dan berkelanjutan, serta dapat menjadi referensi bagi perusahaan sejenis dalam meningkatkan kinerja distribusi melalui penerapan prinsip lean.
Co-Authors Adelia Putri Nasution Anisa Fitri Handaris Purba Budhi Santri Kusuma Mahira Azura Putri Sefira Aulia Harahap Serly Dinda Afriwana Syariah Hilaliyah Pulungan Widyana Widyana Widyana Wirda Novarika AK