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All Journal TIN: TERAPAN INFORMATIKA NUSANTARA Factory Jurnal Industri, Manajemen dan Rekayasa Sistem Industri
Yudi Prastyo
Universitas Pelita Bangsa, Bekasi
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Penerapan Metode CPM dan Crashing pada Proyek Fabrikasi Jembatan B-60 di PT XYZ Khotibul Umam; Ahmad Syaugi; Muhamad Rasyid Syarif; Billa Izzati; Yudi Prastyo
Factory Jurnal Industri, Manajemen dan Rekayasa Sistem Industri Vol. 4 No. 2 (2025): Edisi Desember
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/factory.v4i2.846

Abstract

Perencanaan dan pengendalian waktu serta biaya adalah faktor penting dalam menentukan keberhasilan proyek, termasuk proyek fabrikasi jembatan B-60 yang dikerjakan oleh PT XYZ. Penelitian ini bertujuan untuk menerapan metode Critical Path Metode (CPM) untuk menentukan jalur kritis dan membandingkan efektivitas strategi crashing dalam mempercepat pekerjaan proyek, dengan dua alternatif strategi crashing yaitu penambahan tenaga kerja dan penambahan jam kerja (lembur) selama 4 jam. Analisis ini dilakukan melalui pementaan kegiatan proyek, estimasi biaya dan waktu pada saat pengerjaan normal. Hasil dari penelitian ini menunjukan bahwa jalur kritis proyek terdiri dari delapan kegiatan utama yang memiliki kontribusi signifikan terhadap total durasi. Penambahan tenaga kerja menghasilkan durasi pengerjaan proyek selama 86 hari kerja dengan total biaya proyek sebesar Rp. 156.217.011 Sementara itu, penambahan jam lembur selama 4 jam menghasilkan durasi pengerjaan proyek selama 90 hari kerja dengan total biaya proyek sebesar Rp. 172.013.879. Berdasarkan perbandingan efektivitas waktu dan biaya, alternatif penambahan tenaga kerja dinilai lebih efisien dan dipilih sebagai strategi crashing paling optimal dalam proyek ini
Perbaikan Postur Kerja menggunakan Metode REBA pada Area Assembly Engine Haris David Sitorus; Hendi Herlambang; Yudi Prastyo
TIN: Terapan Informatika Nusantara Vol 7 No 2 (2026): July 2026
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/tin.v7i2.10162

Abstract

This study aims to analyze ergonomic risks and propose improvements to working posture using the Rapid Entire Body Assessment (REBA) method in the Assembly Engine area. The research was conducted through direct observation, documentation of operators’ working postures, interviews, and distribution of Nordic Body Map (NBM) questionnaires. The results showed that several work activities had moderate to high ergonomic risk levels caused by bending postures, repetitive movements, and non-ergonomic component handling activities. The most common complaints experienced by operators were related to the neck, back, waist, and wrists. Based on the REBA analysis results, several improvements are required, including workstation layout adjustments, use of assistive devices, improvement of working methods, and implementation of ergonomic training. The proposed improvements are expected to reduce the risk of Musculoskeletal Disorders (MSDs), improve operator comfort, and support productivity and occupational safety sustainably within the production environment.
Co-Authors Ahmad Syaugi Billa Izzati Haris David Sitorus Hendi Herlambang Khotibul Umam Muhamad Rasyid Syarif