Fast pulse reactor safety analysis

The safety analysis for fast burst reactors (FBR) is discussed. The power reactor General Design Criteria is investigated. The design bases used in the safety analysis of the Sandia Pulsed Reactor 3 (SPR 3) are reviewed. Based on the criteria for earthquake, wind, tornado, flood, and externally generated missiles, the expected response of the systems and structures to these effects is analyzed on the basis of field data, long-term weather observations, and the details of the structural components. High degree of operational safety is required for the reactor system designing in spite of any mechanical, electronic, or human failures. The mechanical design, nuclear design, and thermal design are investigated. The engineered safety features are provided to mitigate the consequences of serious accidents. The fuel temperature and the power of the reactor are monitored by each of two independent protection channels to provide diversity and independence for the protection against failures in the protection system. The power and auxiliary systems, radioactive waste management, radiation protection, and the conduct of operations are other items to be discussed. As concluding remark it can be said that a myriad of safety controls have been designed both to minimize the probability of accidents and to include standby safeguards which would mitigate the consequences of accidents. (Kato, T.)