| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 96 === When planned and designed the Muzha and Danshul lines of Taipei Metro Systems in 70s, many of electrical equipments/devices were installed in related stations and maintenance depot, such as Facility power substation, traction power substation, low voltage distribution room, communication & signal control room, traffic control room, fuel storage area etc. In according with related regulation that the dimension of those area are not met the minimum requirement of auto fire extinguishing system, so there is not required to install auto fire extinguishing system. For further consideration, the metro system is most important of public traffic system in Taipei city, if the metro system shutdown caused by fire, the affection and lost will be a disaster and un-estimation. Therefore, the general consultant had decided to install the auto fire extinguishing system in each facility, and the Halon 1301 detergent was evaluated and selected for auto fire extinguishing system to protect the MRT system operation smoothly and safely.
The Halon agent has been recognized by fire fighting operations worldwide what is most efficiency, low toxicity, low Electrical conductivity and clean agent for fire extinguishing. However it’s restricted to use by Montreal Protocol, since the Halon is an Ozone Depleting Chemical what has caused the Ecological Environment damaging seriously. Due to water pollution’s consideration that the Halon is prohibited for use in water based and foam fire extinguishers in many places, Therefore, the substitution of Halon has to be identified in this situation.
The designer may have different consideration and evaluation for Halon’s substitution decision, some designer may like specific product from his stand point of view, some are requested by customer, the determination of substitute agent may be or may not be the best solution? This study of Halon’s substitution is using customized questionnaires, and designated in human health affections, Ecological Environment protection, cost effectively, function and regulatory requirement etc. The secondary items were screened and evaluated per average value of geometry, follow on by using AHP level analysis to evaluate the Criterion and character index, conformity analysis in major and secondary items, consequently, the table of evaluation weighing index was established. Four types of popular substitute clean agents in country (FK-5-1-12, HFC-227ea, HFC-23 and IG-541) was verified by methods of this study.
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