NUCLEAR SAFETY Barbora Svobodová Angličtina-odborná II

Nuclear Power Stations Dukovany and Temelín Water-cooled Water-moderated Energy Reactor Water-cooled Water-moderated Energy Reactor pressure vessel of the reactor and the primary circuit piping include a very small contents of cobalt, this results in a lower activation of material and also a lower irradiation of personnel

qualified personnel, quality documentation, use of operating experience, technical control, protection against radiation, fire safety, etc. each of the four reactor units is controlled from the independent unit control room the reactor unit chief, primary part operator and the secondary part operator. the reactor unit chief, primary part operator and the secondary part operator.

Unit control room

Safety system Basic precondition of the power station safety is a continuous removal of heat generated in the reactor core. Safety systems consist of a high-pressure and low-pressure emergency pumps, sprinkler system pumps, reservoirs with boric acid solution, heat exchangers, pressurized- water containers, pipelines, fittings, condensing troughs and towers and gas tanks.

Leakage of cooling water security systems would pump cooling water under and over the reactor core and sprinkle the hermetic boxes. disruption of the main circulation piping → pressure of steam generated in hermetic boxes increase → steam into condensing troughs → condense facilities are doubled or tripled, and dimensioned in such an extent that the leakage of radioactive substances to environment would be reduced to a minimum.

Fast shut-down 37 control rod assemblies power supply for all the control rod assemblies in the upper positions is discontinued control rod assemblies starts moving downwards by their own mass into the reactor core, and the fission reaction is terminated within 12 seconds.

Spent fuel storage

Radioactive waste repository Mines Richard institutional waste Bratrství – ex-uranium mine Hostim – not used

State Office for Nuclear Safety Administration and supervision The Radiation Monitoring Network The Emergency Response Cente

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