A procedure has been developed to determine the geometrical parameters of fuel assemblies (FA) by an ultrasonic pulse-echo technique used for all types light-water reactor FAs. The measurement is achieved through pairwise installation transducers opposite FA spacer grid faces at a distance not more than half transducer acoustic field near-region length such that axes are parallel each other. ad...

Transmutation of burnup products for a typical VVER-1000 reactor in fusion-fission hybrid has been investigated using MCNPX 2.6.0 calculation code. Burnup fission was performed 1000 MW practical power VVER core UO2 fuel and light water as its coolant moderator, well. The have classified separated according to their half-lives usages, the remaining wastes were used fuels reactor. also implemente...

Using the Fully Ceramic Microencapsulated (FCM) fuel in light water reactors has multiple advantages, as it is accident tolerant because of; no hydrogen generation due to cladding interaction with steam at high temperature, better retention of fission fragments and proliferation resistant very small production transuranic elements during burnup compared standard UO2 fuel. In this study neutroni...

This paper considers the use of unconventional fuel in nuclear power reactors, using example a VVER-type unit, order to find out possibility saving natural fissile uranium nuclei. Saving is one important tasks, solution which will give time for development two-component industry that have no problems with resources. However, at present, reserves cheap can provide existing level global energy on...

The objective of this paper is to analyze the ability a VVER-1000 core and its control system cope with hypothetical main steam line break (MSLB) accident in case multiple equipment failures. study involves use advanced 3D calculation models benchmarked validated for reactivity accidents preceding studies. A MSLB boundary condition problem solved on coarse (nodal) mesh coupled COBAYA/CTF neutro...