Measurements of Neutron Spectra and Doses Inside and Outside the Containment of a Power Reactor

The neutron spectra and the neutron dose equivalent rates inside and outside the containment of a power reactor were measured with two multi-sphere spectrometer systems that the central detectors are a spherical gold foil and a spherical3He proportional counter, respectively. The response functions were calculated by MCNP code, and MIEKEB code was used for unfolding. Some experiments were done in order to verify the accuracy of the calculated response functions of these systems. The measured results were compared with the calculated results. It is shown that they are accordant in their uncertainties.