Abstract

Purpose: This study aims to improve the quality of risk assessment by strengthening the on-site operation of TBM (Pre-work Safety Inspection Meeting) at small and medium-sized construction sites. The purpose is to empirically analyze the effects of TBM system improvement on worker participation, risk factor awareness, and on-site inspection culture, and to derive effective settlement strategies. Research design, data and methodology: In-depth interviews were conducted using FGI (Focus Group Interview) with 30 managers and experienced workers at two construction sites (Company A and Company B) with a budget of less than 80 billion won. Discussions were induced on a total of eight questions focusing on differences before and after TBM improvement, risk assessment techniques, worker participation methods, and improvement ideas. Results: TBM participation rate increased from 50% to over 95%, and a worker-centered risk factor observation and confirmation culture was established. The recognition rate of priority grades before work increased, and risk assessment execution was improved through reflection on unintentional accidents and self-inspection among colleagues. Conclusions: TBM system improvement brought about positive results in all areas of risk assessment. In the future, quantitative effect analysis, reflection of psychological factors, and review of applicability to various scales of sites are necessary. Compensation, education, and publicity linkage strategies to induce worker participation should also be implemented.