Study for Fire Modeling Application in Emergency Response System Design
|關鍵字:||防火;消防;緊急應變;後果分析;風險管理;Fire Protection;Fire Protection;Emergency Response;Consequence Analysis;Risk Management|
This paper addresses the analysis of life safety’s protection in renovating emergency response system under fires at the CD-R manufacturing facility. The attentions of this research are focused on three analyses: First, applying the concepts of fire risk analysis techniques to identify the potential high risk at the processing units and areas is achieved. Second, applying the Computational Fluid Dynamics’ zone model— Fire Dynamics Simulator (FDS), developed by National Institute of Standards and Technology (NIST), to simulate the characteristics of hazards including temperature, smoke volume rate, residual oxygen concentration and carbon dioxide at the processing units and areas with highly potential risks is fulfilled.. Third, utilizing the evacuation model— Simulex, developed by Integrated Environmental Solutions (IES), to analyze occupant evacuation model and time is accomplished. According to the results of second and third analyses, the suggestions of integrated solutions to reduce the probability of catastrophic incidents can be summarized by plotting timeline and temperature. There has been widely used of flammable chemicals at the processing units which present the greatest risk of fires. There are connections existing between the occupants, the frequency of activities and high-value equipment at the areas of presenting likelihood of high risks. The areas with ventilation systems and automatic sprinkler systems are having relatively low risks of fires compared to other areas. Installation of ventilation systems has the best mean of control of smoke volume rate, but its effect of temperature is quiet limited. The performance of adding automatic sprinkler systems will enhance the mechanism of fire control, but its effect on suppression is not clear. The major hazard of fires is identified as thermal effect. The third part of analysis indicates that the lower occupant load in vast space, the better performance of evacuation except some minor crowded movement at the endpoint. Summarizing the results of the second and third analyses under hazardous conditions, the life safety of occupants may be endangered. The strategies to control such scenarios include: prevention, protection and response. Reduction of the chemicals stored in the areas prevents the possibility of happening. Installation of automatic sprinkler system and early-warning detection system provides the mean of protection. Improving the practice and training of emergency program leads to shortage of response time. This research sets the benchmark of the framework of emergency response by replacing qualitative mode with quantitative mode. As a result, the accountability of the incident will be improved. It not only changes the philosophy of emergency response, but also improves the overall safety of the emergency response personnel with active and passive approaches. Active approaches include automatic sprinkler system, detection system and so on. Passive approaches include dike, compartmentation, fire resistance materials and so on.
|Appears in Collections:||Thesis|