김기환  장성은  김화일

Vol. 40,  No. 1, pp. 48-56, Feb.  2025
10.14341/JKOSOS.2025.40.1.48

accident causation model safety incidents workplace accidents tripoddelta

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Recommendations for strengthening safety measures in energy utilities’ workplaces are made, utilizing the Korea Occupational Safety and Health Agency (KOSHA) Accident Causation Model (ACM). ACM is used to identify in advance accident factors related to human, material, and managerial elements, to establish effective accident prevention measures. Some wording of the existing ACM questionnaire was modified to suit one public energy company site, referred to as “Plant A.” This questionnaire was used to conduct a survey of the prime contractor’s, and first- and second-tier subcontractors’ workers. Analysis of means showed that the prime contractor had its lowest means in the areas of organization, communication systems, and design. The first-tier subcontractors had their lowest means in facilities, mistake-inducing conditions, and design, while the second-tier subcontractors had their lowest means in organization, design, and facilities. All these areas were identified as priorities for improvement. One-way analysis of variance (ANOVA) and post hoc tests showed significant differences between the prime contractor, and first-tier and second-tier subcontractors, in the areas of equipment, mistake-inducing conditions, organization, training and experience, and equipment preservation. ACM and 4M (Material-Method-Machine-Man) analyses of accidents at Plant A by accident type revealed key contributors to accidents. These were: as human elements, mistake-inducing conditions, and inadequate training and experience, and as management elements, organization and equipment preservation. The following safety management measures are therefore recommended: strengthening facility management capabilities, improving training and education programs, mitigating mistake-inducing factors, and enhancing communication systems. These recommendations should improve the level of safety management in public energy companies and yield practical measures to prevent accidents.