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    Wyświetlanie 1-8 z 8
    Tytuł:
    The development of an explosion protection system in the starting air manifold of a high power engine
    Autorzy:
    Chybowski, Leszek
    Kozienko, Damian
    Powiązania:
    https://bibliotekanauki.pl/articles/88667.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    explosion protection
    leakage detector for starting valves
    machine diagnostics
    engine explosions
    active monitoring system
    zabezpieczenia przeciwwybuchowe
    diagnostyka maszyn
    wybuchy silnika
    aktywny system monitorowania
    Opis:
    In this paper, the authors have discussed the subject of fire and explosion hazards during the operation of a modern ship's high-power internal combustion engines. The causes of the occurrence of and the methods of preventing explosions in the starting manifolds of modern piston combustion engines equipped with a pneumatic starting system, with starting valves on the cylinder heads, have been specified. The concept of an active system for monitoring the technical condition of the starting valves has been presented in order to quickly diagnose leakages and reduce the risk of explosion. A conceptual design of a prototype of a non-invasive, new generation leak detector for starting valves and its technical design have been presented. Exemplary implementations of the prototype detector have been shown and its selected functionalities have been discussed. This paper has ended with an assessment of the possibility of further development and the applications of this device.
    Źródło:
    System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 26-34
    2657-5450
    Pojawia się w:
    System Safety : Human - Technical Facility - Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation-based training in fire prevention and fire-fighting of scavenge air receivers fires
    Autorzy:
    Chybowski, Leszek
    Strojecki, Seweryn
    Markiewicz, Włodzimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/88459.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    fire safety
    marine diesel engine
    scavenge air receiver
    engine room simulator
    safety training
    bezpieczeństwo przeciwpożarowe
    silnik diesla okrętowy
    symulator maszynowni
    szkolenie symulacyjne
    Opis:
    This article presents topics concerning fire hazards during the use of low-speed diesel engines in marine vehicles. The causes and effects of fires in the spaces of scavenge air receivers in marine diesel engines are presented. Methods to prevent and fight these fires are shown, including the operating procedures required from ship engine room operators. The possibility of training personnel to apply the abovementioned procedures during operation using simulations of a Kongsberg MC-90 IVship engine room is presented. Simulations were conducted which included a fire in a scavenge air receiver occurring during the operation of a MAN B&W 5L90MC main engine, with loads corresponding to 50% and 100% of the machine’s recommended setting.
    Źródło:
    System Safety : Human - Technical Facility - Environment; 2020, 2, 1; 100-111
    2657-5450
    Pojawia się w:
    System Safety : Human - Technical Facility - Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quantitative Indicators of the Instantaneous Speed of a Ship’s Main Engine and its Usability in Assessing the Quality of the Combustion Process
    Autorzy:
    Chybowski, Leszek
    Kazienko, Damian
    Powiązania:
    https://bibliotekanauki.pl/articles/2064695.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    internal combustion engine
    speed measurement
    cylinder misfire
    quantitative indicators
    condition monitoring
    instantaneous speed
    Opis:
    A graph of the changes in an engine’s operating speed can be used to assess the quality of the combustion in its cylinders. In this paper, the authors carried out tests on a Buckau-Wolf R8VD-136 ship engine, which was directly driving the propeller. This engine is owned by the Laboratory of Marine Engine Rooms at the Maritime University of Szczecin. For standard rotational speeds ranging from 200 to 280 rpm, with increments of 20 rpm, the authors measured the changes in the instantaneous speed for the engine’s normal operating conditions (reference graphs) as well as with one of the cylinders being out of operation. A no-combustion situation was successively introduced into each cylinder for each preset rotational speed. The obtained graphs of the instantaneous speed were then used to determine certain quantitative indicators, which the authors believe can provide information about the technical condition of the engine. The analysis concerned the averaged graphs of the speed under the conditions set for five consecutive engine operating cycles. The indicators that were calculated included the maximum difference in the speed over the engine’s full operating cycle, the uniformity of the engine speed and the differential speed area factor, the latter a term that has been proposed by the authors. The values of the individual indicators that were obtained from the reference graphs and the graphs with no combustion in one of the cylinders were compared. All indicators are sensitive to cylinder misfire. Conclusions were then drawn on the usefulness of these indicators in assessing the condition of an engine.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 93--106
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of selected models useful in ranking the root causes of explosions in marine engine crankcases
    Autorzy:
    Wiaterek, Daniel
    Chybowski, Leszek
    Powiązania:
    https://bibliotekanauki.pl/articles/24202590.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    marine diesel engine
    main engine
    prime mover
    crankcase explosion
    process modelling
    root causes
    Opis:
    This article aims to compile, describe and compare three different models taken from the literature describing the causes of explosions in the crankcases of marine engines. Each of the models has a different level of detail and was prepared with a different purpose. However, the same process, explosions in crankcases, was analyzed in all cases. A statistical evaluation of the frequency of events leading to explosions, a model built using failure mode and effects analysis (FMEA) and a model based on fault tree analysis (FTA) are described in turn. The FTA model drawn from the literature formed the basis for further analysis. Values of important measures of all elementary events of the fault tree were calculated using the Birnbaum reliability measure, Vesely-Fussell measure, Birnbaum structural measure, criticality measure and improvement potential. The percentage importance values of all events determined using these importance measures were compared. The results obtained from the application of each model were evaluated. The results of the models were compared with each other, and an approach using all three models supplemented with diversion analysis was proposed.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 72 (144); 77--85
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessing the topicality of the problem related to the explosion of crankcases in marine main propulsion engines (1972–2018)
    Autorzy:
    Wiaterek, Daniel
    Chybowski, Leszek
    Powiązania:
    https://bibliotekanauki.pl/articles/24202539.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    crankcase explosion
    fire safety
    human casualties
    marine diesel engine
    main engine
    marine engine
    prime mover
    main propulsion system
    incident
    accident
    internal combustion engine
    trunk piston engine
    crosshead engine
    Opis:
    The purpose of this paper is to present the results of a query aimed at assessing the validity of the topic of crankcase explosions prevention in the main marine engines. The study takes into account the engine type, engine manufacturer, ship’s age, accident severity, ship’s location at the time of the incident, and the share of fatal accidents in the analyzed population of crankcase explosions. One of the primary hazards associated with offshore and deep-sea ship operations – and primarily ship power plants – are fires and explosions that result in accidents and incidents with an average frequency of 60 days. This paper discusses the actuality of crankcase explosion hazards in the main propulsion engines of various types of sea vessels. The assessment was made based on the results of a statistical analysis of historical data from 1972 to 2018. The methodology consisted of three stages: (1) a selection query to obtain the source data, (2) analysis of the obtained results (data separation, extraction of additional information, and statistical analysis), (3) synthesis of the obtained information, and drawing conclusions about the numerical indicators describing the statistical distribution of individual events for the given evaluation criteria. The analysis showed that the risk of crankcase explosions affects ships of all ages – both in crosshead (31%) and trunk piston engines (61%) – and that the number of serious incidents (67%) remained constant over the investigated period. Half of all incidents occurred on vessels younger than 15 years old. 58% of explosions took place in engines of the most popular prime movers manufacturers. The probability that a main engine crankcase explosion will result in injury or death is 17.34%.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 71 (143); 33--40
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the opportunities to implement the BIZ-TRIZ mechanism
    Autorzy:
    Chybowska, Dorota
    Chybowski, Leszek
    Wiśnicki, Bogusz
    Souchkov, Valeri
    Krile, Srećko
    Powiązania:
    https://bibliotekanauki.pl/articles/125528.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    Theory of Inventive Problem Solving (TRIZ)
    BIZ-TRIZ mechanism
    SME sector
    R&D&I services
    feasibility analysis
    teoria wynalazczego rozwiązywania problemów (TRIZ)
    mechanizm BIZ-TRIZ
    sektor MŚP
    usługi B + R + I
    analiza wykonalności
    Opis:
    Aiming to strengthen cooperation between scientific entities and enterprises and to overcome related obstacles, the authors propose to create a mechanism of incentives called BIZ-TRIZ, which is an abbreviation for “TRIZ for Business”. This mechanism is used to support cooperation between scientific entities and companies. Close cooperation is achieved by implementing R&D&I services, which is the responsibility of the scientific unit operating for the benefit of the companies involved. Research services are used together with the scientific instrument that reflects achievements in the modern theory of innovative problem solving (TRIZ). The analysis was made using the Maritime University of Szczecin and SME-type companies as an example. This paper describes the basic assumptions concerning the implementation of the BIZ-TRIZ mechanism. Also, it presents the use of SWOT analysis, needs/stakeholder analysis and risk analysis for the implementation of the BIZ-TRIZ mechanism. The paper describes preventative actions for the most important implementation risks and discusses the results of the analyses. Finally, it introduces the main conclusions regarding the purpose of implementing the BIZ-TRIZ mechanism.
    Źródło:
    Engineering Management in Production and Services; 2019, 11, 2; 19-30
    2543-6597
    2543-912X
    Pojawia się w:
    Engineering Management in Production and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A review of TRIZ tools for forecasting the evolution of technical systems
    Autorzy:
    Chybowska, Dorota
    Chybowski, Leszek
    Powiązania:
    https://bibliotekanauki.pl/articles/410063.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    PRST – laws of the evolution of technical systems
    technology forecasting
    S-shaped curve
    analysis of evolutionary potential
    innovation roadmap
    TRIZ
    Opis:
    This article presents tools used in the Theory of Inventive Problem Solving (TRIZ) which are useful when assessing the evolution direction of technical systems. The following matters are discussed: the S-shaped curve, laws (trends and lines) of the evolution of technical systems, multi-screen diagrams, as well as analysis of evolutionary potential. Inventive laws formulated by Gienrich Altshuller as well as laws previously formulated by a Polish writer and promoter of knowledge, Aleksander Głowacki, writing under the pen name Bolesław Prus, have been presented. Finally the innovation roadmaps have been shown. The use of individual tools has been supported by practical examples taken from research performed by the authors, and the usefulness of individual methods was evaluated. All methods have been compared and evaluated.
    Źródło:
    Management Systems in Production Engineering; 2019, 3 (27); 174-182
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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