Radioactive Research on Main Steam Pipe Rupture Accident of Nuclear-powered Equipment of Ship

Respectively considering both the condition of the main steam pipe rupture position at the reactor cabin and cabin behind the reactor cabin, the accident process of the main steam pipe rupture is analyzed, the mathematic and physical model about the transference, leakage and diffusion of the radioactive nuclide is established. Through the method of coupling the thermodynamic calculation result with the radioactive result analysis model, the calculation of the nuclide radioactive concentration in the cabin is realized. Further more the harm of the radioactivity has been analyzed. The research of the paper has provided a basis for the effective constitute of the radioprotection measure in the accident.