Fast Reactor Sodium Fire Analysis

Considering the deficiency of the information on sodium fire, as the first part of the study report, the international research about sodium fire, which includes physical and chemical phenomenon of sodium, mechanism of sodium ignition and combustion, and type, consequences and protection of sodium fire, etc, is presented in the thesis.Sodium fire analysis codes must be developed and applied in order to meet the requirement of accident analysis of China Experimental Fast Reactor ( CEFR ) and to support the continuous development of fast reactor in China. Two codes developed independently are introduced with their calculation model, validation and so on. One is SPOOL used to analyze sodium pool fire and another is SSPRAY used to analyze sodium spray fire.The analysis report of sodium fire accident in CEFR was completed in the project including theoretic analysis of concerned sodium fire accidents with SPOOL and SSPRAY codes, establishment of accident analysis system, determination of accident process, and so on. The results of two beyond design basic accidents are presented briefly.The suggestions for future work are also presented. It includes improvements of the calculation model'of sodium pool fire and spray fire, and development of models of combined fire, sodium-concrete reaction, sodium-water reaction and the experiment study of sodium fire.