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Analisis Perbandingan Penggunaan Nanopartikel Zinc Oxide (ZnO) Sebagai Campuran Coating Plat Baja SS 400 Terhadap Laju Korosi, Kekuatan Adhesi, dan Ketahanan Coating Fakhri, Alfian; Manik, Parlindungan; Amiruddin, Wilma
Jurnal Teknik Perkapalan Vol 12, No 4 (2024): Oktober
Publisher : Diponegoro University

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Abstract

Korosi merupakan permasalahan yang banyak dijumpai khususnya pada konstruksi lambung kapal. Salah satu metode yang paling efektif dalam menahan laju korosi adalah coating. Penelitian ini bertujuan untuk menganalisis perbandingan penggunaan zinc oxide pada campuran cat epoxy dibandingkan dengan tanpa penggunaan zinc oxide pada baja ss 400 terhadap laju korosi, uji adhesi, dan impact. Metode yang digunakan pada peneltian ini adalah eksperimen dengan coating epoxy yang ditambahkan zinc oxide sebesar 5% berdasarkan massa mixing ratio cat, uji laju korosi dilakukan dengan elektrokimia, adhesi dengan portable adhesive tester dan pengujian ketahanan coating menggunakan metode drop weight. Penelitian ini menghasilkan nilai laju korosi terbaik pada coating dengan penggunaan nanopartikel zinc oxide dengan hasil 0,024357 mmpy dan coating epoxy tanpa penambahan zinc oxide menghasilkan nilai 0,038897 mmpy. Pengujian adhesi menghasilkan nilai terbaik pada coating dengan penambahan zinc oxide yang menghasilkan nilai rata – rata 17,37 MPa dan tanpa penggunaan oxide menghasilkan nilai rata – rata 15,45 MPa. Hasil pengujian ketahanan coating pada penelitian ini menghasilkan kedua coating mampu menahan pembebanan kejut yang diberikan pada saat pengujian 
Analysis of Safety Culture Maturity on the Implementation of Occupational Safety and Health Management System in PT XYZ Fakhri, Alfian; Tranggono, Tranggono; Novita Sari, Rizqi
Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) Vol 9 No 1: Sharia Economics
Publisher : Universitas KH. Abdul Chalim Mojokerto

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Abstract

PT XYZ is a company engaged in the energy sector in Indonesia. Based on the company's 2020-2023 report, minor work accidents occurred with the highest frequency and increased in 2021 and 2022. Moderate work accidents increased in 2023 and serious work accidents increased in 2021. The number of work accidents that occurred from 2020 to 2023 in the company remained relatively high. This indicates that OHS management is a crucial concern, so that it can reduce the number of work accidents. Therefore, this study aims to measure the level of maturity of occupational safety culture (OHS) so that it can be used as evaluation material or recommendations for OHS management in the company. This study will consider psychological, behavioral, and situational aspects and use seven dimensions: commitment, information & communication, leadership, organizational learning, competence, involvement & engagement, and responsibility, as well as a quantitative approach through the Analytic Hierarchy Process (AHP) method. The results of the study indicate that the level of maturity of XYZ's safety culture is 4.48, so the company is at the proactive safety culture maturity level. The proposed improvement recommendations are to ensure that the condition of PPE and work safety equipment is functioning properly, create SOPs for each position, hold regular briefings before each job is carried out, conduct work area inspections, install warning signs and safety information in the work area, document all work that has been done, conduct work safety training according to each worker's job description periodically, and hold regular meetings about the importance of K3.