A Study on Ergonomic Risk Reduction and Injury Prevention in Crane Rigging Assembly Tasks

Abstract

This research aimed to reduce the risk of work-related injuries among crane operators, specifically those in the rigger position, at the HOW3 Project site in the Map Ta Phut Industrial Estate, Rayong Province. The study applied ergonomic principles and utilized the Rapid Entire Body Assessment (REBA) method to evaluate postural risks during rigging assembly tasks. The findings revealed a significant reduction in average risk levels across three key operational steps, decreasing from a high-risk level (score ≥ 11) to a moderate-risk level (score range 4–7). This improvement followed the implementation of employee training focused on ergonomic working postures and the design and application of a step ladder to adjust the operator’s working height. This intervention effectively minimized overhead reaching and reduced the risk of posture-related injuries.    As a result, the incidence of work-related injuries among workers declined, and the implementation of the step platform received the highest level of satisfaction from the participants. This study demonstrated the effectiveness of ergonomic interventions in improving occupational safety and health in crane rigging operations.