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All Journal Jurnal Teknik Industri KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan TEKMAPRO Journal of Industrial Engineering and Management JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) REKAYASA Sistemasi: Jurnal Sistem Informasi Briliant: Jurnal Riset dan Konseptual Journal of Industrial Engineering Management EKONOMIS : Journal of Economics and Business Jurnal Sistem Cerdas STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Matrik : Jurnal Manajemen dan Teknik Industri Produksi JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Teknika Jurnal Teknik Industri Terintegrasi (JUTIN) Nusantara Science and Technology Proceedings Indonesian Journal of Industrial Engineering & Management Juminten : Jurnal Manajemen Industri dan Teknologi Journal La Lifesci Journal La Multiapp JURNAL ILMIAH GLOBAL EDUCATION Indonesian Journal of Innovation Studies Jurnal Pengbdian Teknik Mesin Golden Ratio of Mapping Idea and Literature Format JAMBURA: JURNAL ILMIAH MANAJEMEN DAN BISNIS Jurnal Sains dan Teknologi Jurnal Teknologi dan Manajemen Industri Terapan Jurnal Teknik Mesin, Industri, Elektro dan Informatika Journal of Creative Student Research Electronic Journal of Education, Social Economics and Technology IIJSE Journal Serambi Engineering (JSE) Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Advance Sustainable Science, Engineering and Technology (ASSET) Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Academia Open Jurnal Kendali Teknik dan Sains
Rr. Rochmoeljati
Universitas Pembangunan Nasional Veteran Jawa Timur
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Penerapan Metode House Of Risk Pada Aktivitas Pengadaan Pt. Waskita Beton Precast, Tbk Plant Prambon R. A. Luthfi Asia Fergisya; Rr. Rochmoeljati
Jurnal Kendali Teknik dan Sains Vol. 2 No. 1 (2024): Januari: Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i1.2424

Abstract

PT. Waskita Beton Precast, Tbk Plant Prambon is a manufacturing company that produces precast concrete. In carrying out the production process, PT. Waskita Beton Precast, Tbk Plant Prambon requires materials and services from related vendors. The Supply Chain Management Division is responsible for meeting material and service needs. However, in the process it is not uncommon to encounter several risks that can hamper the company's smooth operations. Therefore, this research recommends the House of Risk method as risk management. From the results of this research, it can be seen that there are 21 risk events and 34 risk causes. The results of House of Risk phase 1 are that there are 9 causes of risk that need to be formulated risk mitigation strategies. The results from House of Risk phase 2 obtained 9 risk mitigation strategies
Optimasi Pemilihan Supplier Kayu dengan Metode PROMETHEE untuk Pemilihan Supplier Terbaik di CV AIDA Qanita Zahira Muhar Arifin; Rochmoeljati Rochmoeljati
BRILIANT: Jurnal Riset dan Konseptual Vol 11 No 1 (2026): Volume 11 Nomor 1, Februari 2026
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v11i1.2223

Abstract

CV Aida is a company engaged in furniture manufacturing. The purpose of this research is to select the best supplier for CV Aida. This study uses primary data in the form of CV Aida's supplier criteria obtained through interviews and questionnaires with three employees who understand the company's suppliers, as well as secondary data in the form of a list of teak wood suppliers and literature studies as the basis for determining the criteria. The dependent variable is the best alternative supplier of wood raw materials for CV Aida, while the independent variables are the supplier selection criteria derived from the literature and interview results. Data processing is carried out using the AHP method to determine the weights of criteria and subcriteria, and the PROMETHEE method to evaluate and determine the best supplier based on these criteria.. The finding indicates that the top-ranked supplier is UD Tulus with a net flow of 0.427. UD Barokah is ranked second with a net flow of 0.09225. Meanwhile, UD Ikhwan Kayu occupies the third rank with a net flow of -0.132. Although UD Ikhwan Kayu has a negative net flow, it is still better than UD Hikmah and UD Agung Kayu, with net flows of -0.15475 and -0.2325, respectively.
Analisis Kecacatan Tiang Teras Menggunakan Metode Fault Tree Analysis Dan Failure Mode And Effect Analysis: (Studi Kasus: UD Pulo Beton Jombang) Marisa Tri Indra Nayu Aini Kurnila; Rr. Rochmoeljati
Jurnal Teknologi dan Manajemen Industri Terapan Vol. 3 No. 4 (2024): Jurnal Teknologi dan Manajemen Industri Terapan
Publisher : Yayasan Inovasi Kemajuan Intelektual

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55826/jtmit.v4i4.1352

Abstract

Kualitas produk merupakan faktor penting dalam menjaga daya saing perusahaan, terutama pada industri manufaktur beton seperti UD Pulo Beton Jombang yang memproduksi berbagai komponen bangunan. Permasalahan utama yang dihadapi perusahaan ini adalah tingginya tingkat kecacatan produk pada tiang teras, dengan jenis cacat meliputi pecah, retak, tidak siku, dan keropos. Penelitian ini bertujuan untuk menganalisis akar penyebab cacat dan memberikan rekomendasi perbaikan menggunakan metode Fault Tree Analysis (FTA) dan Failure Mode and Effect Analysis (FMEA). Data yang digunakan merupakan data historis produksi periode Maret 2024–Februari 2025. Hasil analisis menunjukkan bahwa cacat dominan adalah tidak siku dengan jumlah 674 unit atau 40,87% dari total kecacatan 1649 unit. Nilai Risk Priority Number (RPN) tertinggi sebesar 306 juga terdapat pada cacat tidak siku, yang dipengaruhi oleh kurangnya ketelitian karyawan, kerusakan cetakan, dan kualitas material yang rendah. Rekomendasi perbaikan mencakup pelatihan prosedur pencampuran dan pemasangan penguat, penerapan SOP pencampuran, inspeksi rutin bahan baku, serta perawatan cetakan dan mesin secara berkala. Implementasi rekomendasi ini diharapkan mampu menekan tingkat kecacatan dan meningkatkan kualitas produk tiang teras UD Pulo Beton.
Analisis Pemborosan Waktu Pelayanan Dengan Metode Lean Healthcare dan Root Cause Analysis 5 Why (Studi Kasus: Poli Saraf RSUD dr. Darsono Pacitan) Prasetyo Mukti; Rochmoeljati Rochmoeljati
Jurnal Ilmiah Global Education Vol. 7 No. 2 (2026): JURNAL ILMIAH GLOBAL EDUCATION
Publisher : LPPM Institut Pendidikan Nusantara Global

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/jige.v7i2.5865

Abstract

Healthcare services demand speed, accuracy, and quality to meet expectations and increase patient satisfaction. However, in practice, waste is still frequently encountered in service flows, such as long queues, long waiting times, data recording errors, and inefficient manual activities. This situation also occurs at the Neurology Clinic at dr. Darsono Pacitan Regional Hospital, the main referral hospital in Pacitan Regency. This study aims to identify forms of waste in services at the Neurology Clinic and propose improvements to increase service efficiency. The method used is the Lean Healthcare approach with the assistance of Root Cause Analysis (RCA) and the 5 Whys technique to identify the root causes of problems. The analysis using BPM showed that the initial service lead time was 127 minutes. After implementing the improvement recommendations, non-value-added activities were completely eliminated, reducing the lead time to 68 minutes, equivalent to a 46.5% reduction in time. The improvement recommendations focused on increasing the efficiency of neurology services through human resource optimization, work system organization, implementation of 5S, utilization of information technology, digitization of medical records, and involvement of medical personnel in improving service quality.
Optimalisasi Kinerja Operasional Gudang Menggunakan Theory Of Constraints (TOC) Dan Discrete Event Simulation (DES) : (Studi Kasus: PT PLN (Persero) Up3 Madura) Ike Jihan Nabila; Rr. Rochmoeljati
Jurnal Teknologi dan Manajemen Industri Terapan Vol. 5 No. 1 (2026): Jurnal Teknologi dan Manajemen Industri Terapan
Publisher : Yayasan Inovasi Kemajuan Intelektual

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55826/jtmit.v5i1.1436

Abstract

Penelitian ini bertujuan untuk mengoptimalkan kinerja operasional gudang PT PLN (Persero) UP3 Madura dengan mengidentifikasi dan mengurangi bottleneck pada alur proses menggunakan metode Theory of Constraints (TOC) dan Discrete Event Simulation (DES). Metode TOC digunakan untuk menemukan aktivitas yang menjadi kendala utama dalam sistem, sedangkan simulasi DES dengan perangkat lunak ProModel digunakan untuk mengevaluasi kinerja sistem serta menguji beberapa skenario perbaikan. Hasil analisis menunjukkan bahwa aktivitas pemuatan material pada Stasiun Kerja 2 (Outbound) merupakan bottleneck utama dengan waktu baku 15,83 menit dan tingkat utilisasi sumber daya mencapai 90%. Model simulasi yang telah tervalidasi digunakan untuk menguji tiga skenario perbaikan. Dari hasil simulasi diperoleh bahwa Skenario 3, yaitu perbaikan tata letak gudang (re-layout) dengan pengurangan jarak antar area sebesar 25%, menghasilkan peningkatan throughput sebesar 15,4% dan penurunan waktu siklus sebesar 23,6%. Dengan demikian, integrasi metode TOC dan DES terbukti efektif dalam meningkatkan efisiensi aliran material dan kinerja operasional gudang secara keseluruhan.
Integrated Seven Tools Approach Reduces Flat Glass Defects: Integrasi Pendekatan Seven Tools Untuk Mengurangi Cacat Kaca Lembaran Citra Wahyuning; Rr. Rochmoeljati
Indonesian Journal of Innovation Studies Vol. 27 No. 3 (2026): July
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i3.2003

Abstract

General Background: Product quality control is a central requirement in manufacturing because defects can reduce production performance, increase waste, and weaken company reputation. Specific Background: PT XYZ, a major flat glass manufacturer in Indonesia, faced quality problems in flat glass production during January to September 2025, including inclusion, shellchip, scratch, and stain. Knowledge Gap: The manuscript identifies the need for structured defect analysis, causal diagnosis, and priority repair strategies to minimize flat glass product defects. Aims: This study aimed to identify flat glass defect types using Seven Tools and formulate quality improvement proposals using New Seven Tools. Results: The study recorded 567 defective units. Shellchip was the dominant defect, accounting for 50% or 285 units, followed by scratch at 22% or 123 units, inclusion at 16% or 91 units, and stain at 12% or 68 units. The proposed priority improvements were tightening raw material quality checks from suppliers, implementing double checks during press cutter machine setting, routinely cleaning dirt on the roll, conducting spray tests before coating, and creating a preventive maintenance schedule for coating machines. Novelty: The study combines Seven Tools for quantitative defect analysis with New Seven Tools for structured causal exploration and improvement prioritization. Implications: The findings offer practical quality control actions for reducing flat glass defects and strengthening production reliability. Highlights: A total of 567 faulty units were recorded from January to September 2025. Scratch, inclusion, and stain followed at 22%, 16%, and 12%. Five priority actions addressed supplier checks, cutter setup, roll cleaning, spraying, and maintenance. Keywords: Flat Glass, New Seven Tools, Product Defect, Seven Tools, Quality Control
Analysis of Time Waste in Healthcare Services Using Lean Healthcare and the 5 Whys Root Cause Analysis: Case Study Neurology Outpatient Clinic at Dr. Darsono Regional General Hospital, Pacitan Prasetyo Mukti; R. Rochmoeljati
Golden Ratio of Mapping Idea and Literature Format Vol. 6 No. 2 (2026): February - April
Publisher : Manunggal Halim Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52970/grmilf.v6i2.2102

Abstract

Health services require speed, accuracy, and quality in order to be able to meet expectations and increase patient satisfaction. However, in practice, problems in the form of waste are still often found in the service flow, such as long queues, long waiting times, data recording errors, and inefficient manual activities. This condition also occurs at the Nerve Polytechnic of dr. Darsono Pacitan Hospital, which is the main referral hospital in Pacitan Regency. This study aims to identify forms of waste in services at the Nerve Polytechnic and provide suggestions for improvements to improve service efficiency. The method used is a Lean Healthcare approach with the help of Root Cause Analysis (RCA) and the 5 Why technique to trace the root cause of problems. The results of the analysis using BPM show that the lead time of the initial service is 127 minutes. After the implementation of the improvement recommendations, non-value added activities were completely eliminated, so that the lead time was reduced to 68 minutes, or equivalent to a time reduction of 46.5%. The improvement recommendations are focused on improving the efficiency of polyneural services through optimizing human resources, adjusting the work system, implementing 5S, utilizing information technology, digitizing medical records, and involving medical personnel in improving service quality.
Analysis of Furniture Product Defects Using Fault Tree Analysis and Root Cause Analysis Methods Sofia Fitri Anasari; Rr. Rochmoeljati
Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i6.2227

Abstract

PT WW is a furniture company that uses teak wood as its main material. Factory 1 often experiences product defects because it handles the initial production stage. This study focuses on the SP-15 chair, the company’s best-selling product, which has a defect rate of 15.2%, far above the company tolerance of 5%. The research aims to reduce these defects using the Fault Tree Analysis (FTA) method and provide improvement recommendations. Observations revealed three defect categories with eleven basic causes. The most dominant defect is rupture, with 2726 units and a probability of 0.0085 or 0.85%. Meanwhile, the lowest defect type is incorrect process, with 835 units and a probability of 0.0034 or 0.34%. Because rupture has the highest probability, improvement efforts are urgently needed. Proposed corrective actions include developing and applying SOPs for wood processing, installing visual guides in the work area, establishing standard work procedures, and providing short operator training. Additional recommendations include routine technical training and competency tests, guidelines for machine pressure settings based on wood type, and operator instruction on adjustment. Regular maintenance schedules should also be established, with visual operation guides placed near machines to ensure operators follow correct steps. These efforts are expected to reduce defects and improve the quality of SP-15 chair production at PT WW.
Analysis of Waste in Electronic ID Card Services with Lean Service and Root Cause Analysis Methods Marsya Laila Ahyaliya; Rr. Rochmoeljati
Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i6.2446

Abstract

Optimal service is essential to ensure citizen satisfaction in managing population administration. This study analyzes waste in the Electronic ID Card (KTP Elektronik) service process using the Lean Service and Root Cause Analysis (RCA) methods. The research was conducted at Office X through direct observation, interviews, and the distribution of questionnaires to eight respondents directly involved in the service process. The collected data included service process flows, activity durations, waste identification, and their root causes. Using the Value Stream Mapping (VSM) method and VALSAT tools, it was found that the total lead time was 1,953 seconds, but only 238 seconds (13%) were categorized as value-added activities. The dominant types of waste identified included waiting, duplication, defects, and unnecessary movement. Based on the score calculation results, Process Activity Mapping (PAM) was selected as the main VALSAT tool. RCA analysis using fishbone diagrams and the 5 Whys method revealed root causes such as inaccurate queue time estimates, repeated data entry, lack of supporting facilities, and inefficient workplace layout. The improvement recommendations include optimizing the online queuing system and adding supporting equipment such as tripods and printers. After improvements were implemented, the service time was reduced to 898 seconds, and the proportion of value-added activities increased to 27%, indicating that the application of Lean Service and RCA was effective in improving service efficiency.
Waste Analysis in Connection Clamp Production Process with Lean Manufacturing and Failure Mode Effect Analysis Faishal Hidayatulloh; Rr. Rochmoeljati
Journal La Multiapp Vol. 7 No. 1 (2026): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v7i1.2820

Abstract

UD H and M Electric is a manufacturing company engaged in the production of medium voltage overhead line (SUTM) components, one of its products is the Connection Clamp. The purpose of this study is to determine the level of waste that occurs and provide suggestions for improvements to reduce waste. The research data used is questionnaire data with respondents who meet the qualifications and know the entire flow of the Connection Clamp production process, as well as waste data that occurs during the production process. To determine the level of waste that occurs and provide suggestions for improvements, the Waste Assessment Model, Process Activity Mapping, Fishone Diagram, and Failure Mode and Effect Analysis methods are used. In the Waste Assessment Model method, the top three critical levels of waste were obtained, namely waste defect of 19.55%, waste motion of 16.88%, waste transportation of 16.10%. In the Failure Mode and Effect Analysis, the Risk Priority Number (RPN) value was obtained from the top three wastes with each sub-waste, namely waste motion sub-waste lifting products manually with a score of 280, waste motion sub-waste rearranging before the process with a score of 240, waste transport, namely the distance of the work station is less than optimal with a score of 200, waste reject sub-waste cracked plates with a score of 168, waste Defect, namely imperfect layers with a score of 168.
Co-Authors Adham Roihan Azriel Irfani Afriza, Ajeng Agustina, Mega Alfan Afiyudin Alief Wahyu Pratama Alvionita, Selvi Amalia, Rochmatul Amelia, Avril Firda Annandita, Alifia Rizky Benedictus V.B.P. Benedictus Vibriyanto Bagas Prakosa Berliana D. Novitasari Berliana Dian Novitasari Brilian, Delinda Budiani, Dian Nissa Fitri Bustomy, Andrean Cantika, Devani Nendi Aurillia Chori Dwi Azizah Christabela Jesselyn Citra Wahyuning Dama Yanti, Alviani Dewi Aisarunnisa' Maunah Dimas Wandhika D Dira Ernawati Endang Pudji Widjajati Erlangga, Muhammad Daffa Erlina Erlina Fadilla Umeida Putri Faishal Hidayatulloh Faizal, M. Rizki Nur Fanani, Handre Syahrul Farica Raisa Vania Faris R, Mohamad Fatharisa Ingke Maulida Fatihul F, Ahmad Fenny Novianti Ferina Indah Lusiana Ferina Indah Lusiana Ferraldo Kusuma Artono Putra Ferraldo Kusuma Artono Putra Fibio Isnando Hariatmaja Pradana Fibio Isnando Hariatmaja Pradana Fitria Novi Ariestiyani Fuadah, Layin Ike Jihan Nabila Iriani Iriani Isna Nugraha Isna Nugraha Ivonne Rakha Salsabila Ivonne Rakha Salsabila Kamal Husein Kamal Husein Kezia Grace Sudarman Khusnun Nabila Khusnun Nabila Layin Fuadah Marcella, Sania Mardila Nur Imamah Marisa Tri Indra Nayu Aini Kurnila Marsya Laila Ahyaliya Maunah, Dewi Aisarunnisa' Meisufi, Ruro Wiranti Moch Taufik Hidayat Moch Taufik Hidayat Mochamad Ismail Zakaria Mochamad Ismail Zakaria Muhammad Hadziqul Afkar Muhammad Ilham Romadoni Muhammad Ricky Suryawan Muhammad Rizki Kurniawan Muhammad Zainur Roziqin Mutia Meilanda Nababan, Yohanes Nafa Artha Cahaya Mulia Nafa Artha Cahaya Mulia Nafa Artha Cahaya Mulia Nugraha, Isna Nugroho, Rosa Novarian Agninditya Pradana, Billy Gandis Prakosa, Albertus Adriyanto Satrio Pramudya, Kaka Arya Prasetyo Mukti Prasetyo Mukti Pratama, Alief Wahyu Primadhiya, Fairuzzayyan Pristyanto, Yafie Putra, M. Rizqy Ifaldhi Qanita Zahira Muhar Arifin Qothrunnada, Alisa R. A. Luthfi Asia Fergisya Raditya Dwi Firmansyah Raditya Y E Rafida, Halimas Nafi Rahandi Ramadhan Rahmadianto, Raihan Rahmawati, Dea Ramadhan, Muhammad Afif Ramadhani, Muthia Dita Rauhul Rahman Adam Rebeka P, Adhe Ridwan Alief Ramdhan Adi Ruro Wiranti Meisufi Sastya, Nur Cholifah Shafa, Aura Diva sholeha, fitriatus Sinaga, Boriski Sinta Dewi Sofia Fitri Anasari Sofia Fitri Anasari Subono, Muhammad Wibbie Wiweka Sumiati Sumiati Surya M Ramadhan Syarifah, Faranisa Aulia Ar Rahma Tiara Nuriyah Sani Tivani Nava Arier Tranggono Tranggono Valentino, Eki Vaundra Cunning Hangesthi Vaundra Cunning Hangesthi Widyarsa, Destiara Nabila Widyawati, Diana Windra R, Harys Wisnu Wardana, Wisnu Ya Fachrul Rasyid Ya Fachrul Rasyid Yustina N Yustina Ngatilah Zella Azzahra Achmadani