Strategies for construction hazard recognition
CONTRIBUTIONS TO CONSTRUCTION HAZARD RECOGNITION THEORY AND
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| CONTRIBUTIONS TO CONSTRUCTION HAZARD RECOGNITION THEORY AND PRACTICE The study began with an exploratory phase, as described in chapter 1, where hazard recognition methods were identified from other industries, survey of CII member organization methods, and through brainstorming sessions with an expert panel of construction professional. Following this three methods were selected, further developed, and customized for construction field 159 implementation. As shown in Figure 1, the System for Augmented Virtuality Environmnet Safety (SAVES) was a training component, the Safety Meeting Quality Measurement tool was a planning component, and the Hazard identification and transmission (HIT) was an execution phase component. A fundamental component common to all three strategies were the energy based mnemonics designed based on the Haddons energy release theory. Figure 1: Outcome strategies of the research The research team believed that the proportion of hazards recognized and communicated would improve when SAVES is used as an intervention, as shown in Figure 2, because the system 160 facilitates (1) hazard recognition using the energy-based retrieval mnemonics (2) worker engagement using the theory of serious gaming (3) worker exposure to several work-scenarios, where the worker is provided an opportunity to recognize hazards to develop situational awareness skills and (4) feedback of the hazards successfully identified and those that were not. The findings revealed that crews on average were able to only identify 46% of hazards prior to the introduction of the intervention, but were able to recognize 77% of hazards in the post- intervention phase. Figure 2. Components of SAVES model The SMQM maturity model was built upon the principal assumption that the proportion of hazards recognized and communicated, as shown in Figure 6, would improve because the strategy facilitates (1) use of energy-based retrieval mnemonics to recognize hazards associated with construction processes (2) goal setting based on the assessment of the quality of pre-job safety meetings, (3) feedback to the supervisor on areas that need additional improvement, and (4) comparison of current performance with mature work-groups that provides an opportunity for self-regulated improvement. The results showed that workers were able to identify and communicate an average of 38% of hazards before the intervention was applied and that the new strategy caused a weighted overall level-change improvement in hazard recognition skill of 31% (p < 0.01). |