The Study of Risk Assessment on the Application of FMEA to Building HVAC and Smoke Control System

• Main Authors: Cheng-Ju Lee, 李政儒
• Other Authors: Ming-Jong Tsai
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/363j75

碩士 === 國立臺灣科技大學 === 自動化及控制研究所 === 94 === This study is focused on a sample building and on the re-evaluation and risk assessment on functions of its Heating, Ventilating, and Air-Conditioning (HVAC) systems and Smoke Control System. This thesis contains three parts. In the first part, through the use of the Failure Mode and Effects Analysis (FMEA), a risk analysis is made on all Smoke Control System facilities. In case of system failure, proper suggestions are presented. Through the assessment using Risk Priority Number (RPN), the prior action for the system failure is also proposed to improve system reliability and efficiency. In the second part, by using Fire Dynamics Simulator (FDS), the quantitative analysis of a fire before and after improvement was made for the Smoke Control System. The characteristics and toxicity of the smoke in a fire model can be applied to analyze the descent status of the smoke. In the third part, by using the evaluation standard on indoor safety issued by the Building Construction Department of the Ministry of Internal Affairs, the descent time of the smoke in the evaluated room can be obtained for comparison before and after improvement are made. This is to determine whether the escape time is less than the descent time of the smoke or not. The casualty in case of a fire can be reduced. Through the application of FMEA mentioned in part one, improvement plans on the increase in number of effective smoke extraction outlets and volumes, leakage improvement and rearrangement of zoning are given. In part two, four different types of office room before and after improvement are evaluated. The escape time has been increased up to 41.3% in average. Finally, fourteen office rooms of typical floor are evaluated and an average increase of 50.6% of available escape time was achieved. Thus, this method leads to a more precise understanding of both smoke control system and fire. It is useful in accomplishing the goal of safety escape for building occupants.