Radioactive zones electronic

Few of the pions formed in the annihilation process reach the earth s surface. They undergo radioactive decay (life-time about 10 s) to muons and neutrinos, or they collide with other particles in the atmosphere and are annihilated. The muons have properties similar to the electron, but are unstable, decaying with a life-time of about 2 x lO s to electrons and neutrinos. The collision reactions of the pions result in the formation of a large number of other particles such as electrons, neutrons, protons, and photons. Some of the electrons so formed are captured in a thick zone around the earth known as the inner van Allen belt. 

The USNRC headquarters Operations Centre has developed a system which can receive and display plant post-accident information from power plant computers. Each commercial nuclear power plant is required to have an Emergency Response Data System (ERDS) which is a direct electronic transmission of selected plant parameters from the licensee s onsite computer system to the NRC Operations Center in the event of an emergency. Other system users include NRC regional offices and States within the plume exposure pathway emergency planning zone upon the request of the States. The number of parameters for each site is variable but must include data points from four types of plant conditions reactor core and coolant system conditions reactor containment conditions radioactivity release rates ... 

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