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Journal : Advance Sustainable Science, Engineering and Technology (ASSET)

Analysis of Lean Manufacturing Using the Waste Assessment Model (WAM) to Reduce Waste in the Bolt Production Process at PT.XYZ Irma Dani Br Sinulingga; Rusindiyanto
Advance Sustainable Science Engineering and Technology Vol. 7 No. 1 (2025): November-January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i1.699

Abstract

PT.XYZ was established in 1975 and is a manufacturer of bolts, nuts, anchor bolts, stud bolts, tapping screws, and washers in Southeast Asia, with an annual production capacity of 48,000 tons. These products serve various industries such as construction, manufacturing, automotive, and general industries. Despite careful planning, challenges in large production volumes and varied product specifications remain obstacles in meeting customer demand. Amidst global competition and stringent industry standards, implementing lean manufacturing is crucial to enhance efficiency and competitiveness. This study aims to identify waste ≤ 17% using the Waste Assessment Model, conduct Root Cause Analysis to pinpoint waste origins, and propose improvement strategies using 5W+1H Analysis. Findings reveal Inventory (21.44%) as the highest waste contributor, attributed to interdepartmental coordination issues, production errors, lack of operator focus, delayed resource availability, and production flow bottlenecks. Additionally, Defects (18.47%) arise from excessive workload on production operators. Improvement recommendations include enhancing interdepartmental coordination, refining production scheduling, evaluating production processes, and conducting training and evaluations to enhance operator skills.
Analysis of Lean Manufacturing Using the Waste Assessment Model (WAM) to Reduce Waste in the Bolt Production Process at PT.XYZ Sinulingga, Irma Dani Br; Rusindiyanto
Advance Sustainable Science Engineering and Technology Vol. 7 No. 1 (2025): November-January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i1.699

Abstract

PT.XYZ was established in 1975 and is a manufacturer of bolts, nuts, anchor bolts, stud bolts, tapping screws, and washers in Southeast Asia, with an annual production capacity of 48,000 tons. These products serve various industries such as construction, manufacturing, automotive, and general industries. Despite careful planning, challenges in large production volumes and varied product specifications remain obstacles in meeting customer demand. Amidst global competition and stringent industry standards, implementing lean manufacturing is crucial to enhance efficiency and competitiveness. This study aims to identify waste ≤ 17% using the Waste Assessment Model, conduct Root Cause Analysis to pinpoint waste origins, and propose improvement strategies using 5W+1H Analysis. Findings reveal Inventory (21.44%) as the highest waste contributor, attributed to interdepartmental coordination issues, production errors, lack of operator focus, delayed resource availability, and production flow bottlenecks. Additionally, Defects (18.47%) arise from excessive workload on production operators. Improvement recommendations include enhancing interdepartmental coordination, refining production scheduling, evaluating production processes, and conducting training and evaluations to enhance operator skills.
Co-Authors Adelencia, Vallent Arfi Aditya Fahmi Nurwicaksono Aditya Yusuf Indrastana Akhmad I. Fajar Alfin B. Maulana Alfin, Muhammad Alfitri Dilla Anggraeni Alfitri Dilla Anggraeni Arief Sulistyo Wibowo Aryaduta, Galang Aryani, Enny Athalarvin Nabilfathin Arvin Azhar Muhammad Nurdin Azhar Muhammad Nurdin Azizy, Annisa Rahmi Baiq Azka Lazuardina Catur A. Pamungkas D, Muhammad Yafi Deni Deni Dhifa Farah Dicya, Bintara Putra Dira Ernawati Endang Pudji W Erlangga E. Taruna Erlina Purnamawati Erlina Purnamawaty Fadilla Umeida Putri Fahmi Ali Fahmi Ali Fais Pramudya Mulya Fais Pramudya Mulya Farah, Dhifa Friska Aryanti Gufron, Achmad Hafid Syaifullah Hatta Makarim Hayati, Kinanti Resmi Ifwarisan Defri Ignadia Zain Balqis Imam Ramadhani Intan Normania Iriani Irma Dani Br Sinulingga Isna Nugraha Isna Nugraha Jeremiah Batista Hutagaol Joumil Aidil Saifuddin Khomsus SF Lazuardina, Baiq Azka M Fayshal Ferdiansyah M. Frizky Feri Setiawan Maulana Malik Agungdiningrat Mega Cattleya Prameswari Annissaa Islami Mega Nanda A.W Moch. Annas Hidayatulloh Moh. Miladun Hakimin Alim Mohammad Shodiq Wahyu Riamto Muhammad Zaky Mubarok Musyaffa, Akmal Fikri Faaiz Najmuddin Syah, Mochammad Dhia Nike Illiyine Pangestuti Nike Illiyine Pangestuti Noval Dwi Aryadipura Noval Dwi Aryadipura Nugraha, Isna Nur Rahmawati NUR RAHMAWATI Pradanarka, Andyas Mukti Priyatna Septedi Inrianto purba, Willy Putri, Firda Amalia Qurratul Aini Raden Bramantia Rukmana Radifan Dimasyqi Radifan Dimasyqi Rafida, Halimas Nafi Rahmatillah, Hassan Rakhmanhuda, Iffad Rama Adi Rama Adi Ramadhani, Imam Ramadhany Novitasari, Syafira Rega Fahmi Rivaldy Rega Fahmi Rivaldy Renny Agustini S Revica Tauriza Alfiane Riyadi, Attila Daffa Rizqi Novita Sari Rizqi Novita Sari Rizqi Novita Sari Rochmatullah, Faris Yasin Romadoni, M Ilham Sabrina Salma Nabila Sarah Aliyah Sabhirah Shafira Sausan Ferinanda sholeha, fitriatus Sinulingga, Irma Dani Br Sitanggang, Antonius Nathanael Sugianto, Moch. Febri Sunardi Sunardi Tino Aprilyanto Tranggono Tranggono Tranggono Tranggono Tranggono Trinisa, Lerinda Ubaidillah Ubaidillah Ubaidillah Vensa Aldian Alfano Vensa Aldian Alfano Willy Purba Winursito, Yekti Condro Yekti Condro Winursito Yekti Condro Winursito Yus Ardianto ZAHRA, SALSABILA AULIA Zamroni Makruf Zamroni Makruf