In nuclear fission, a delayed neutron is a neutron emitted by one of the fission products any time from a few milliseconds to a few minutes after the fission event. The counts of delayed neutrons constitute a time series sequence. The analysis of such time series can prove to be very significant for purpose of predictive maintenance in nuclear power plants. In this paper we aim to identify anom...

Two methods were elaborated for calculation of the kinetic effects caused by the photo-neutrons emitted in beryllium reflector of the VVRSZM type research reactor of KFKI-AEKI. The first simplified point kinetic model assumes that the importance of photo-neutrons is the same as that for the neutrons originated from the fission events. The point kinetic parameters were calculated by using the mo...

High level Liquid Waste (HLW) is generated during the reprocessing of spent nuclear fuel which is used to recover uranium and plutonium. More than 99% of the radioactivity generated during the burning of nuclear fuel in the reactor is present in HLW. For the efficient management of HLW either by vitrification in the suitable borosilicate glass matrix, or partitioning and transmutation (P&T) of ...

This study presents an optimal design of the coolant system a non-refueling full-life small reactor by analyzing space-integrated geometrical and electromagnetic variables extra vessel pump (EVEMP) for circulation lead–bismuth eutectic (LBE) coolant. The EVEMP is ideal alternative to thermal-hydraulic micro reactors as it possesses no internal structures, such impellors or sealing transportatio...

Since the end of 1989, ECN renewed its interest in incineration of transuranium elements and fission products. With respect to the transmutation of minor actinides ECN was requested by the clutch government to start a study of a scenario based upon thermal reactors and to work on incineration by means of new fast reactor designs. There are also plans for a study on the possible use of accelerat...

In Japan, since plutonium is to be used as a nuclear fuel material under the nuclear energy policy, the objective of partitioning and transmutation (P&T) is oriented to removal and transmutation of mainly MA and long-lived fission products. Under the OMEGA (option making of extra gain from actinides and fission products transmutation) programme, on the basis of the double-strata fuel cycle conc...

Single crystals of superconducting BaFe1.8Co0.2As2 were exposed to neutron irradiation in a fission reactor. The defects introduced decrease the superconducting transition temperature (by about 0.3 K) and the upper critical field anisotropy (e.g. from 2.8 to 2.5 at 22 K) and enhance the critical current densities by a factor of up to about 3. These changes are discussed in the context of simila...

The major parts of the TRIGA-LASER experiment for collinear laser spectroscopy on exotic fission products from the TRIGA research reactor [1] are now installed and are currently being commissioned. Besides the exploration of unknown ground in the nuclear chart with respect to spins, moments and charge radii, the experiment is the prototype of the the LaSpec experiment [2] at FAIR, GSI and will ...