A great amount of radioactive concrete waste was produced from the decontamination and decommissioning of a research reactor and uranium conversion plant at KAERI. To reduce the volume of concrete waste, a separation technology of porous fine cement paste from the gravel and aggregate in concrete through a thermal and mechanical treatment was developed [1]. However, since some gravel and aggreg...

The idea to hold an international conference on radiation and health arose as a natural response to the mounting evidence of serious health effects on populations resulting from the Chernobyl accident. The nature of the Chernobyl accident, where large amounts of radioactive nuclides spread in the reactor area and all over Europe, dictated the emphasis of the presented papers covering both direc...

The Fukushima Daiichi nuclear power plant accident in Japan triggered by a magnitude 9.0 earthquake and resulting tsunami on March 11, 2011 caused the month-long discharge of radioactive materials into the atmosphere. It is urgent to assess the radiological dose to the public resulting from this release, using both environmental monitoring data and computer simulation based on atmospheric dispe...

The development of commercial fusion plants includes the demonstration that the waste burden for future generations would be avoided. In order to minimize the radioactive material requiring long-term storage, maximum emphasis should be placed on recycling and clearance, avoiding geologic disposal. Clearance is the most desirable option for components like the vessel, shield, magnets and bioshie...

A research programme sponsored by the German Federal Ministry for the Environment, Nature Protection and Nuclear Safety (BMU) was conducted during 1992 and 1993 in the Southern Urals, to provide an initial validation and comparison of results of population exposure arising from the release of radioactive waste from the MAYAK nuclear facility between the years 1948 and 1967. This programme inclu...

The timing of formation for the first planetesimals determines mode planetary accretion and their geophysical compositional evolution. Astronomical observations circumstellar discs Solar System geochronology provide evidence planetesimal during molecular cloud collapse, much earlier than previously estimated. Here, we present distinct observational from white dwarf systems occurring few hundred...

Radioactivity measurements for water, soil, and air have been completed in national international regions. The radioactivity process is randomized occurs naturally by primordial nuclides. Another case hand-made reactions which realized artificial reactions. high rate of the total dose radiation, whichever exposed to humans, originates as Natural Radioactivity. In this case, environmental are im...

236 Performance Characteristics of a Third Generation Portable Radionuclide Identifier Ronald M. Keyser and Timothy R. Twomey ORTEC, 801 South Illinois Avenue, Oak Ridge, TN 37830 ABSTRACT The continuing need for a hand-held, portable radionuclide identifier for use in countering illicit nuclear trafficking and in positive identification of radioactive materials, benign or threat, has fostered ...

Using the gamma spectroscopy system, it can be determined whether environmental samples or standard radioactive sources are radioactive, and from which elements their radioactivity originates. The purpose of Monte Carlo (MC) simulation is to model a real-life system with its inputs evaluate outputs real results. This study calculates experimental efficiency p-type HPGe detector using 0.5 g/cc E...