ZHANG Yan-yan,CAO Wei-xin,LU Ji-cheng,et al.Discussion on Design of Ultra-fine Dry Powder Automatic Fire Extinguishing System in Utility Tunnel[J].China Water & Wastewater,2020,36(22 22):136-140.
Discussion on Design of Ultra-fine Dry Powder Automatic Fire Extinguishing System in Utility Tunnel
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
22 22
Page:
136-140
Column:
Date of publication:
2020-11-17
- Keywords:
- utility tunnel; ultra-fine dry powder fire extinguishing system; fully submerged extinguishing system
- Abstract:
- Ultra-fine dry powder fire extinguishing systems are popular fire-fighting facilities in utility tunnel now. However, the provisions of the national standard were not carried out, and the local standard parameters were quite different. So it was impossible to reach the widespread agreement on the design principles and detailed parameters for ultra-fine dry powder system fire extinguishing system in the utility tunnel. In view of these problems, with comparison of the national standards and local standards, it was considered that in utility tunnel, the ultra-fine dry powder systems should adopt fully submerged ultra-fine dry powder automatic fire extinguishing system. When calculating the dosage of ultra-fine dry powder extinguishing agent, the method of calculating dosage = the design concentration × volume × compensation coefficient could be used. Hazard level should be defined as medium hazard level. The selection of design concentration and other parameters should be based on local standards.
Last Update:
2020-11-17