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16 REVISTA ROMÂN DE AUTOMATIC c. System of toxic gas recovery and treatment – allows for the toxic gas recovery in case of accidents with the release of higher levels of toxic gases than the maximum admissible concentration. The system acts in case of an accident with toxic gas release when the maximum admissible levels are exceeded. In such cases, the bay is sealed-off and the whole air from the ventilation system is circulated through this system. The system allows the recovery of toxic leaks without evacuating them in the atmosphere. d. System of plant discharge in case of emergency – provides the plant discharge in case of accident; the system is actuated for certain technological parameters values in conjunction with the signal sent from a radioactive fluid detector. The need to discharge the pollutant in case of emergency with toxic substances release is required for safety reasons (to avoid contamination and pollution) and economical reasons (to recover the process fluid). The discharge is made after the gas is passed through the recovery and treatment unit. The security function of the system consists of minimizing the toxic leaks in the room in case of an accident and of preserving the process fluid inventory. e. Ventilation system – provides the ventilation of rooms where toxic fluids are processed, as well as of the control room with the purpose of diluting their level in the air, also ensures the set off of the gas recovery system in case of accident. The ventilation systems allow: - reduction of plant’s major risks - accumulation of explosive and toxic substances - the toxic material leaks. The functions of the system are: - decreasing of the toxic substance level in the plants; - coupling with the toxic gas recovery and treatment system; - the monitoring with the help of detectors of the toxic substances. By implementing the proposed system, we also focus on the proper compliance to the economy demands specific to the nuclear field, with involvement in the industrial security, meaning the fight against natural disasters and industrial accidents. 3. CONCLUSION Due to the innovation of the system and of the information network to be developed, a higher standard of work and health is provided, including opportunities for study and improvement and technological transfer to less developed areas which need control, where the security and protection architecture for special cases is included. Another special feature is that such system improves the security degree and increases the intelligence level of the information systems of the nuclear industrial plants of tritium processing. The system has also the function of adjusting the technological process in the sense of adapting to variations of the input parameters. Thus, an optimized functioning of the plant is secured (products – levels – temperatures – pressures – flows) for various values that might appear for objective reasons in the input parameters. Thus, the system represents the monitoring and control solution, in view of technological plants’ operating under special condition. REFERENCES [1] Hall T.Martin&Meg. L. Martin –“LabView for Automotive, telecommunications, semi-conductor, Biomedical and other applications”, Prentice Hall PTR,Upper Saddle River,NJ 07458,2000,USA, pages 185-190, ISBN 0-13-019963-X. [2] Stephen C.Gates & Jordan Becker, “Laboratory Automation using the IBM PC”, Prentice Hall,New Jersey 07632. [3] N. Dragulanescu, P. Constantin, “Electronica Industriala”, Editura didactica si pedagogica, Bucharest 1983. [4] Costin Cepisca, “ Masurari electrice si electronice”, Editura ICPE, Bucharest 1997. [5] „LabView Datalogging and Supervisory Control Module”, Operation manual documentation, 2001, Texas, National Instruments Company. AR934-3.doc
RRA, Vol. XX, Nr. 3 - 4 pag. 17-20, 2007 Tipărit în România Remote control system and real-time operation functions of hidro-power plants eng. Irina CONSTANTINESCU IPA, Craiova subsidiary, Romania, e_mail: office@ipacv.ro eng. Ciprian PREDESCU IPA, Craiova subsidiary, Romania, e_mail: office@ipacv.ro eng. Daniela MIHAI IPA, Craiova subsidiary, Romania, e_mail: office@ipacv.ro eng. Cornelia POPA IPA, Craiova subsidiary, Romania, e_mail: office@ipacv.ro eng. Alexandru CRACIUN IPA, Craiova subsidiary, Romania, e_mail: office@ipacv.ro Abstract: This paper proposes to realize a general solution for the remote control of a MHEPS; This solution has implemented by the authors at MHEPS- Cerna which belong to Hidroelectrica Targu-Jiu. It is necessary to administrate efficiently the hydro-energetic resources, decrease the cost of the energy and increase the running security. Keywords: Energy system management, Measurements, Transducers, Daq, Dispatcher 1. INTRODUCTION The target of the paper is the control and supervising of water accumulations in the hydro-energetic plants, the remote control of the hydro-power plants and the development of the hydro-energetic fitting-out: ♦ increase the energetic capacity optimizing the use of the energy in a micro hydro-power plant station. ♦ permanently and continuously information about the water debits in the hydro power plant. ♦ establish a MHEPS’s optimum running rate for the entire year. ♦ eliminate the inundation risk during the autumn-winter season and winter-spring season increasing the system running safety ♦ increase the efficiency on the whole chain of energy producing and use and integrate the energetic sector in the EU standards. ♦ realize a complex automation for the remote control of the hydro-power plant stations. ♦ Realize a high technologic efficiency. The system proposed by the authors is SCADA Decision Support System / Management Support System which lead to the efficient use of the energy, the optimum use of the water resources eliminating the inundation risk. All software was developed by the authors and the team coordinated by the authors. Both on national and international layout pay attention for the inundation risk In the hydro electric power stations the strategy which prevent the inundations is correlated with the automatic control of the water debit driving automatically the tilting gates of the storage basins. The new global outlook of the European Community regarding the safety of the flowing water to prevent the inundations will have to be obligatory for Romania concerning to our integration in EU. For the present do not exist a system, which permit the automatically opening of the tilting gates, which belong to the storage basins; in this way, a water quantity higher then normal level, can be flowed through the tilting gates.
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