Sereda S.N. Estimation of the ecological risk with fuzzy models
Estimation of the ecological risk with fuzzy models
Sereda S.N.
This work is devoted to the system analysis of the possibility of the application of the fuzzy set and models for the estimation of the ecological risk and the system safety. Probabilistic safety analysis is widely used in system analysis for solution of practical tasks of assessment and protection of various processes and systems. In this case it uses a model of a tree incident, showing the causal relationships between the leading event (accident, catastrophe) and their basic assumptions of its occurrence. Often when predicting the safety of the newly designed objects, the values of the probabilities of the prerequisites are not known precisely due to the lack of theoretical models to assess a priori probabilities or the lack of statistic data. In addition, they can be represented interval values, or linguistic (verbal) qualitative characteristics of the background-the causes of the accidents. Therefore, the fuzzy model for evaluation of safety and environmental risk are often used. The interval description indicator of fuzzy values is both a criterion of reliability of the safety assessment. Since an increase in the interval leads to increased uncertainty probabilities, and thus to reduce the degree of reliability of the assessment. Purpose of the work is definition of the character of changes of the criterion of reliability of the changing parameters of the fuzzy set values in the model tree incident. Also the results of the analysis confirm the possibility of application of fuzzy models for the analysis of safety processes and systems at an acceptable level of confidence are given.
Keywords: the model of the system, the evidence tree, the probability of the event, fuzzy set.
References
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«Engineering industry and life safety» №3 (17), 2013. Pages: 15-20
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Sereda Sergey Nikolaevich – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: sereda-2010@mail.ru
Melkozerov V.M., Vasiliev S.I., Gorbunova L.N. Comparative analysis of polymer sorbents characteristics
Comparative analysis of polymer sorbents characteristics
Melkozerov V.M., Vasiliev S.I., Gorbunova L.N.
The paper presents the results of research and experimental-design work on creating and putting into production high-performance oil-absorbing polymer sorbents of “Unipolimer-M”and “Bio-Unipolimer” series, as well as a multi-functional composite “Menom”. Polymer sorbents of “Unipolimer-M” and “Bio-Unipolimer” series and “Menom” can be used for the localization of oil spills on water surfaces and swamps. Industrial wastewater treatment plants use them for fine cleaning water and industrial wastewater of oil products at car wash sites, steaming stations, oil depots and repair facilities. The above-mentioned sorbents are applied for rapid absorption and neutralization of spills of flammable, volatile and, first of all, highly toxic liquids. Polymer sorbents of “Unipolimer-M” and “Bio-Unipolimer” series and “Menom” do not cause ecological imbalance in the ecosystem and do not produce a negative effect on the biotypes of different trophic levels.
Keywords: oil, oil products, polymer sorbents, hydrosphere cleaning, soil reclamation.
References
- Arzhanov S.P., Vasiliev S.I., Gorbunova L.N. Safety in the oil and gas complex. − Krasnoyarsk: IPK SFU, 2008. − 519 p.
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«Engineering industry and life safety» №3 (17), 2013. Pages: 10-14
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Melkozerov Vladimir Maksimovich – Engineer, Center for training and development professionals and managers of oil and gas business, Siberian Federal University, Krasnoyarsk, Russia. E-mail: centroilgaz@sfu-kras.ru
Vasiliev Sergey Ivanovich – Ph.D., Siberian Federal University, Krasnoyarsk, Russia. E-mail: S-Vasilev1@yandex.ru
Gorbunova Lyubov Nikolaevna – Ph.D., Siberian Federal University, Krasnoyarsk, Russia. E-mail: Brigitta_81@mail.ru
Grigorjuk E.N. Estimation of the model ventilation system parameters for industrial premises
Estimation of the model ventilation system parameters for industrial premises
Grigorjuk E.N.
With advances in technical progress, the impact of human activities on the environment is becoming more and more devastating. Nowadays, people are suffering from negative effects of various physical and chemical factors. One of the most serious problems of modern manufacturing companies is poor air quality inside the industrial premises. Specialists have discovered more than a thousand of toxic substances so far, which may negatively affect the state of health of workmen and cause dangerous diseases. Thereupon, the issue of ensuring industrial and ecological safety of manufacturing companies has become very acute. The paper considers the way of designing a model ventilation system for industrial premises using Simulink simulation environment in Matlab complex. The model experiment and the estimation of dynamic indicators are under way.
Keywords: model experiment, ventilation system, system model.
References
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«Engineering industry and life safety» №3 (17), 2013. Pages: 5-9
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Grigorjuk Ekaterina Nikolaevna – Graduate student, Murom Institute of Vladimir State University, Murom, Russia. E-mail: kat-grigoryuk@yandex.ru
