Malovik C.N.,Sevastopol National University of Nuclear Energy and Industry
Problems of Atomic Science and Technology | Year: 2013
The article considers the issues related to the standardization of NPP equipment resource capacity. The author suggests the approaches to improving resource planning techniques and the models of prediction processes for equipment resource capacity of the critical facilities.
Najafov A.M.,Azerbaijan Technical University |
Sofiyev A.H.,Suleyman Demirel University of Turkey |
Hui D.,University of New Orleans |
Hui D.,Tongji University |
And 3 more authors.
Meccanica | Year: 2014
In this paper, the governing equations for non-linear free vibration of truncated, thin, laminated, orthotropic conical shells using the theory of large deformations with the Karman-Donnell-type of kinematic nonlinearity are derived. Applying superposition principle and Galerkin's method, these equations are reduced to a time dependent non-linear differential equation. The frequency-amplitude relationship for the laminated orthotropic thin truncated conical shell is obtained using the method of weighted residuals. In the particular case, we can obtain the similar relationships for the single-layer and laminated orthotropic cylindrical shells, also. The influence played by geometrical parameters of the conical shell and physical parameters of the laminate (i.e. material properties, staking sequences and number of layers) on the non-linear vibration behavior of the conical shell is examined. It is noticed that the non-linear vibration of shells is highly dependent on laminate characteristics and, from these observations, it is concluded that specific configurations of laminates should be designed for each kind of application. Present results are compared with available data for special cases. © 2013 Springer Science+Business Media Dordrecht.
Brzhezinskiy V.A.,Sevastopol National University of Nuclear Energy and Industry
CriMiCo 2013 - 2013 23rd International Crimean Conference Microwave and Telecommunication Technology, Conference Proceedings | Year: 2013
The present paper concerns the comparative complex study of degradation kinetics of light-emitting diodes in the course of the long neutron and gamma irradiation and tests for non-failure operation at thermocurrent loadings without irradiation. Serially released devices on the basis of A3B5 connections (arsenide and gallium phosphide) and GaAlAs solid solutions were exposed to research. © 2013 CriMiCo'2013 Organising Committee, CrSTC.
Gulin S.B.,Sevastopol National University of Nuclear Energy and Industry |
Gulin S.B.,Ukrainian Academy of Sciences
Journal of Radioanalytical and Nuclear Chemistry | Year: 2014
Measurements of particulate and dissolved 234Th were carried out in March 2002 in the Bransfield Strait located between the Antarctic Peninsula and the South Shetland Islands. The 234Th/238U disequilibrium found in the upper water column has allowed evaluation of downward particle fluxes across a frontal zone, which divides water masses coming from the Bellingshausen Sea and the Weddell Sea. The highest particle flux has been found in this mixing zone, where it was 3-5 times greater than in the adjacent waters. Total mass fluxes in the upper 150-m water column were estimated as about 2.2 g m-2 day-1 in the eastern part of the Strait and 3.1 g m-2 day-1 in the western area. © 2013 Akadémiai Kiadó, Budapest, Hungary.
Kotelenets V.G.,Sevastopol National University of Nuclear Energy and Industry
Nuclear and Radiation Safety | Year: 2014
The safety operation of NPPs substantially depends on efficiency of the operator's management system. The National Nuclear Operator "Energoatom" successfully completed the development and certification of an integrated management system to comply with the ISO 9001:2008 and ISO 14001:2004 international standards. In this regard, it has become important to ensure greater effectiveness of internal audits as an integral part or the continuous improvement process. Several approaches have been suggested for planning of internal audits and preserving the experience of personnel at South Ukraine NPP.