News
Innovation of calculation models for safety analyses of nuclear power plants
In October 2017 TES specialists from the Computational analyses and Safety Department successfully completed the project of the Innovation of Calculation Models for Safety Analyses of Nuclear Power Plants. The project was aimed to develop a comprehensive CFD (Computational Fluid Dynamics) model of the nuclear reactor and to perform CFD calculations of the coolant mixing in VVER-1000 reactor. Results gained in cooperation with the University of West Bohemia in Plzeň (Czech Republic) will be applied in TES for further innovation and validation of calculation models developed in RELAP5 and TRACE codes for safety analyses of VVER-1000 reactor units, especially in modes where data for validation from real nuclear reactors or experimental facilities are not available. The project is co-financed by the European Union under the Operational Programme Enterprise and Innovations for Competitiveness.
TES presentation in the Electrical Engineering Council of Rosenergoatom
TES took part in the sitting of the Electrical Engineering Council of ROSENERGOATOM Concern, which was dedicated to the „Enhancement of electrical equipment reliability“held from 9 to 13 October, 2017 in Moscow organized under aegis of the Russian Rosenergoatom Concern. The programme addressed mostly issues of diagnostics and measuring and included topics related to the electrical equipment installed in areas of electrical engineering and electric technology of nuclear power plants. The TES company in its contribution focused on the presentation of new web interface of the monitoring system MOSAD®-5 implemented in the nuclear power plant Dukovany and Temelín and also paid attention to the condition diagnostics of asynchronous motors detected by means of measurement and analyses of electrical parameters.
The development of new software for the analysis of high power induction motors
TES in cooperation with the Department of Theoretical and Experimental Electrical Engineering (DTEE) and the Faculty of Electrical Engineering and Communication (FEEC) of the University of Technology in Brno (BUT) has been working on the development of a specific software for analysis of signals measured on power supply of high power induction motors while applying the MCSA method (Motor Current Signature Analysis). The software is considered to be a key element of the diagnostic method allowing periodic monitoring with the aim to analyse the technical condition of the motor within predictive maintenance and service life management. The software together with measuring equipment will be used regularly to provide the analysis of high power induction motors at nuclear and fossil-fuel power plants or other industrial enterprises. The project is co-financed by the European Union under the Operational Programme Enterprise and Innovations for Competitiveness.
ANSYS Fluent VVER-440 Application Training
TES company in partnership with Brookhaven National Laboratory developed and implemented expert training on use of ANSYS-FLUENT software program and its application on VVER-440 reactor unit. The training was organized under the US Nuclear Regulatory Commission's International Technical Assistance Program with the goal of enhancing ANRA's (Armenian Nuclear Regulatory Authority) and TSO's (NRSC- Nuclear and Radiation Safety Centre) technical capabilities and expertize. The 4-week training program included special lectures delivered by experts from TES s.r.o, Czech Technical University in Prague (CVUT Praha), Brno University of Technology (VUT Brno) and TechSoft Engineering spol s.ro. Armenian experts were trained in the training facilities of TES in Třebíč and Czech Technical University in Prague. After a demanding work programme all participants could relax by sightseeing of Třebíč, Brno and Prague UNESCO heritage.
MCSA method used to diagnose reactor cooling pump´s motor at NPP Temelín
TES specialists have recently performed regular diagnostic measurements of reactor cooling pumps’ motors at Temelin nuclear power plant. Within the measurement, Motor Current Signature Analysis (MCSA) was applied which is a non-invasive diagnostic method that allows early detection of incipient stator and rotor faults. It involves simple measurements that can be performed without interruption of the machinery operation. TES in cooperation with Brno Technical University has developed advanced measuring equipment and software solution that further improves results and reliability of the failure detection in induction motors. While the advantages of the MCSA method have been demonstrated on nuclear power plant equipment maintenance, the TES measuring equipment and evaluation software is suitable for all industrial applications where induction motors are used.
Development of Design Extension Conditions documentation for nuclear regulator
The company TES succeeded in another public tender for scientific and technical support of State Office for Nuclear Safety (SUJB) of the Czech Republic in the area of nuclear safety. In frame of this contract TES experts will elaborate documentation containing safety instructions and methodological guidelines for preparation and evaluation of deterministic safety analyses of Design Extension Conditions (DEC A) and safety analyses of nuclear power plant shutdown modes. This work is the latest example of long-term and successful history of TES activities in providing the technical support to Czech nuclear regulatory authority in the field of strengthening the safety level of nuclear reactors in Czech Republic.
Technical support of nuclear regulatory authority within commissioning of unit 3 and 4 of Mochovce NPP
The company TES as a consortium leader won a major contract for scientific and technical support of the Nuclear Regulatory Authority (UJD) of the Slovak Republic within commissioning of Unit 3 and 4 of NPP Mochovce. In frame of this project company TES provides independent support to nuclear regulatory authority within its assessment activities and checking the compliance with nuclear safety requirements. The project involves not only the assessment of documentation, but also round the clock monitoring of commissioning activities at NPP Mochovce site until all required tests will be successfully finished. The other members of consortium are VUJE and UJV Rez.
