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    Wyświetlanie 1-4 z 4
    Tytuł:
    Influence of coal-fired power stations on the concentration of radioisotopes in the environment
    Autorzy:
    Mazur, G.
    Mazur, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/148410.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    coal-fired power plant
    radioactivity
    environment contamination
    Opis:
    Radioactive contamination of the environment means a higher concentration of radioisotopes with regard to background level. Undoubdtedly, the incidental or permanent emissions of radionuclides to the environment are the sources of radioactive pollution. In this connection the diversity of radioisotopes distribution in nature can be observed. The key aim of the presented work was to ascertain the presence of radioactive elements and their decay products in the environment. Nuclides were emitted by selected conventional coal-fired power plants located in the south of Poland. The samples from the neighbourhood of three power plants and a sample from “clean” territory were measured. Additionaly, we measured the concentration of 137Cs istotope descended from the Chernobyl disaster.
    Źródło:
    Nukleonika; 2010, 55, 2; 243-246
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wybrane aspekty przeciwdziałania awariom przemysłowym na przykładzie elektrowni węglowej
    Selected aspects of counteracting industrial failures on the example of coal-fired power plant
    Autorzy:
    Celoch, Aneta
    Powiązania:
    https://bibliotekanauki.pl/articles/114954.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    awarie przemysłowe
    elektrownia węglowa
    metoda FTA
    industrial failures
    coal-fired power plant
    FTA method
    Opis:
    W opracowaniu przedstawiono problematykę przeciwdziałania awariom przemysłowym. Skoncentrowano się na branży energetycznej. Przybliżono strukturę wytwarzania energii w Polsce. Zaprezentowano proces wytwarzania energii elektrycznej w konwencjonalnej elektrowni węglowej. Na podstawie analizy literaturowej i studium przypadków zidentyfikowano jedną z najczęstszych przyczyn awarii w elektrowniach węglowych – wybuch pyłu węglowego – i w tym aspekcie zaproponowano zastosowanie analizy drzewa błędów FTA. Rozwiązanie to ma na celu przedstawienie błędów w prawidłowym funkcjonowaniu instalacji elektrowni, co pozwala zidentyfikować zdarzenia podstawowe i pomaga dobrać prawidłowo zabezpieczenia, które mogą w rozpatrywanej sytuacji przeciwdziałać wskazanemu zdarzeniu.
    The paper presents the problem of preventing industrial failures. The study focuses on energy industry. The structure of energy production in Poland has been reviewed and the process of production of electricity in the conventional coal-fired power plant has been presented. Based on the literature analysis and case study, coal dust explosions have been identified as one of the most common reasons of failure in coal-fired power plants – and in this aspect the proposal to use FTA fault tree analysis has been offered. The aim for this solution is to present errors in the correct functioning of power plant installations which allows to identify basic events and helps to correctly select security measures that may counteract the indicated event in the considered situation.
    Źródło:
    Zeszyty Naukowe. Quality. Production. Improvement; 2019, 1 (10); 71-79
    2544-2813
    Pojawia się w:
    Zeszyty Naukowe. Quality. Production. Improvement
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of the effect of chemical pollution with coalfired power plant on the fish of Lake Kenon (Trans-Baikal territory, Russia)
    Autorzy:
    Tsybekmitova, Gazhit Ts.
    Gorlacheva, Evgeniya P.
    Tashlykova, Nataliya A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1050768.pdf
    Data publikacji:
    2021-03-31
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    coal-fired power plant
    chemical pollution
    Carassius auratus gibelio
    Perca fluviatilis
    bioaccumulation factor
    trophic magnification factor
    Lake Kenon
    Opis:
    In this study, contamination of potentially toxic elements (Cr, Mn, Cu, Zn, Hg and Pb) and species dominant in the fish community of Lake Kenon – Carassius auratus gibelio (Bloch 1782) and Perca fluviatilis (Linnaeus 1758) – were investigated. Chemical elements in samples were determined by atomic emission spectrometry (iCAP-6500, Thermo Scientific, USA) and mass spectrometry (X-7, Thermo Elemental, USA). It was reported that water in Lake Kenon contained low concentrations of the studied metals. The bottom sediments are enriched with Mn, Zn, Hg and Pb. Bioaccumulation factors of chemical elements accumulated from the surrounding water for P. fluviatus and C. auratus gibelio in descending order are as follows: Zn > Pb > Hg > Cu. P. fluviatus accumulates Hg in equal measure from both water and bottom sediments. Manganese and mercury are accumulated in the muscles of C. auratus gibelio from bottom sediments. The high accumulation ratio of Zn and Hg in C. auratus gibelio was obtained from Chara sp. (24 times) and Chironomus spp. (38 times), respectively. High accumulation ratio of Zn (26 times) and Hg (29 times) in P. fluviatus was obtained from amphipods. At the same time, Hg in P. fluviatus muscles was accumulated at high level from Chironomus spp. (67 times). In this way, management decisions for mitigation practices in Lake Kenon should be focussed on for the disposal of wastewater from the ash dump contaminated with chemical elements.
    Źródło:
    Quaestiones Geographicae; 2021, 40, 1; 51-62
    0137-477X
    2081-6383
    Pojawia się w:
    Quaestiones Geographicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Conditions for increasing the recognition of degradation in thermal-flow diagnostics, taking into account environmental legal aspects
    Autorzy:
    Drosińska-Komor, Marta
    Głuch, Jerzy
    Brzezińska-Gołębiewska, Katarzyna
    Piotrowicz, Michał
    Ziółkowski, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/41181077.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Warszawska, Instytut Techniki Cieplnej
    Tematy:
    steam turbine
    genethic algorithm
    diagnostic
    coal-fired power plant
    efficiency analysis
    turbina parowa
    algorytm genetyczny
    diagnostyka
    elektrownia węglowa
    Opis:
    The ever-increasing demand for electricity and the need for conventional sources to cooperate with renewable ones generates the need to increase the efficiency and safety of the generation sources. Therefore, it is necessary to find a way to operate existing facilities more efficiently with full detection of emerging faults. These are the requirements of Polish, European and International law, which demands that energy facilities operate with the highest efficiency and meet a number of restrictive requirements. In order to improve the operation of steam power plants of electric generating stations, thermal-fluid diagnostics have been traditionally used, and in this paper a three-hull steam turbine, having a high-pressure, a medium-pressure and a low-pressure part, has been selected for analysis. The turbine class is of the order of 200 MW electric. Genetic algorithms (GA) were used in the process of creating the diagnostic model. So far, they have been used for diagnostic purposes in gas turbines, and no work has been found in the literature using GA for the diagnostic process of such complex objects as steam turbines located in professional manufacturing facilities. The use of genetic algorithms allowed rapid acquisition of global extremes, that is efficiency and power of the unit. The result of the work undertaken is the possibility to carry out a full diagnostic process, meaning detection, localization and identification of single and double degradations. In this way 100 % of the main faults are found, but there are sometimes additional ones, and these are not perfectly identified especially for single time detection. Thus, the results showed that with a very high success rate the simulated damage to the geometrical elements of the steam turbine under study is found.
    Źródło:
    Journal of Power Technologies; 2023, 103, 1; 33-48
    1425-1353
    Pojawia się w:
    Journal of Power Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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