No abstract

To develop a walking aid tool that can help the visually impaired to evacuate in the event of fire, a questionnaire was devised and 100 visually impaired people were surveyed. The questionnaire was divided into four categories: fire safety education and training, self-evacuation in the event of fire, direction checking method, and applicability of an auxiliary evacuation tool. The questionnaire was conducted through a web survey and was followed by an in-depth interview with the visually impaired. The questionnaire results indicated that the respondents prefer wristband-type and conventional cane-type aid tools, which are convenient to wear and render both hands free, as evacuation walking aid tools as well as voice and touch as information sharing methods.

In Korea, considering that the accuracy of fire scenario evaluation is reduced by performance-based design, it is assumed that the sprinkler does not operate. In other countries, the design continues to be researched considering the operation probability of the sprinkler. In particular, the operation probability that divides the effect after operation is analyzed. Therefore, the operation probability was analyzed by considering the effect of sprinkler operation using domestic fire statistics. As a result, it was found that the probability of successful operation for fire extinguishment was 44%, the success of suppression was 32%, and failure to operate was 24%. As a result of a comparison with data from other countries, the probability of operating, 76%, was lower than that of studies from other countries. When comparing the probability results for successful fire extinguishment, success of suppression, and failure to operate, it was confirmed that the probability of successful suppression was slightly different.