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All Journal The Indonesian Journal of Occupational Safety and Health
Md Tamrin, Shamsul Bahri
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Health Professions Medicine & Pharmacology

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The Impact of Heat Stress on Physiological Health in Industrial Workers: A Mixed-Methods Study Nurhartonosuro, Imam Munajat; Md Tamrin, Shamsul Bahri; Mohd Suadi Nata, Dayana Hazwani; Karuppiah, Karmegam; Guan, Ng Yee; Ananta, Gede Pramudya
The Indonesian Journal of Occupational Safety and Health Vol. 14 No. 3 (2025): The Indonesian Journal of Occupational Safety and Health
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ijosh.v14i3.2025.335-347

Abstract

Introduction: The discrepancy between actual heat stress and workers' perception results in a mitigation failure, potentially leading to fatality. This study aimed to investigate workplace heat stress, workers' workload, and personnel's heat strain in steel mills under extreme temperature conditions. Methods: The study used a mixed-methods design and was conducted across three steel mills in East Java, Indonesia. An analysis of heat-stress data included heat-stress symptoms derived from physiological and environmental factors, while the personal perception assessment was based on comprehensive interview sessions. These quantitative results, obtained from 119 operators, were compared with workers' personal thermal perceptions using a mixed-methods approach. Phase 1 quantitative method consisted of onsite data collection, walkthrough inspection, questionnaire distribution, workplace monitoring, personal assessment, and statistical analysis. Phase 2, as a qualitative stage, consisted of in-depth interviews and focused group discussions with 15 participants. Results: The wet-bulb globe temperature measurements confirm significant heat stress in all mills. Workers' physiological responses remained within acceptable limits according to ACGIH criteria. However, a noticeable discrepancy was found between the quantitative data and workers' perceptions, highlighting the need for greater awareness and training on heat-stress hazards. Conclusion: The alignment between qualitative and quantitative findings underscores the importance of integrating both approaches to develop effective mitigation strategies. This study contributes to understanding occupational heat stress in high-risk environments and emphasizes the need to incorporate worker perceptions into health and safety protocols.
Co-Authors Ananta, Gede Pramudya Guan, Ng Yee Karuppiah, Karmegam Mohd Suadi Nata, Dayana Hazwani Nurhartonosuro, Imam Munajat