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    Wyświetlanie 1-5 z 5
    Tytuł:
    Assessment of the concept of the new methodology for the evaluation of ship planned maintenance system
    Autorzy:
    Stanivuk, T.
    Stazić, L.
    Vidović, F.
    Bratić, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2063953.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    ship operation problems
    maintenance system
    Planned Maintenance System
    assessment process
    expert opinion
    onboard maintenance
    Opis:
    The paper presents an attempt to develop better and cheaper methodology for evaluation of the quality of the ships’ computerized Planned Maintenance System databases. A concept for the better methodology has been developed following many times verified rule that faster and cheaper is better. The concept of the methodology has been checked in operation, tested on four different databases. Results of the evaluation performed by the concept are compared with an expert evaluation using old, verified methodology, performed on same databases. Comparison valuated the concept, bringing the verdict if it is functioning or not, showing that the old and verified rule is not functioning every time.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 739--742
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electric motors maintenance planning from its operating variables
    Planowanie utrzymania ruchu silników elektrycznych i ich zmiennych operacyjnych
    Autorzy:
    Rodrigues, F.
    Fonseca, I.
    Farinha, J. T.
    Ferreira, L.
    Galar, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/409876.pdf
    Data publikacji:
    2017
    Wydawca:
    STE GROUP
    Tematy:
    maintenance
    planned maintenance
    electric machines
    HMI/SCADA
    utrzymanie ruchu
    planowane utrzymanie ruchu
    maszyny/urządzenia elektryczne
    Opis:
    The maintenance planning corresponds to an approach that seeks to maximize the availability of equipment and, consequently, increase the levels of competitiveness of companies by increasing production times. This paper presents a maintenance planning based on operating variables (number of hours worked, duty cycles, number of revolutions) to maximizing the availability of operation of electrical motors. The reading of the operating variables and its sampling is done based on predetermined sampling cycles and subsequently is made the data analysis through time series algorithms aiming to launch work orders before reaching the variables limit values. This approach is supported by tools and technologies such as logical applications that enable a graphical user interface for access to relevant information about their Physical Asset HMI (Human Machine Interface), including the control and supervision by acquisition through SCADA (Supervisory Control And data acquisition) data, also including the communication protocols among different logical applications.
    Planowanie utrzymania ruchu odpowiada podejściu, które ma na celu maksymalizację dostępności wyposażenia, a w konsekwencji zwiększenie poziomu konkurencyjności przedsiębiorstw przez zwiększenie czasów produkcji. W artykule przedstawiono planowanie utrzymania ruchu w oparciu o zmienne operacyjne (liczba przepracowanych godzin, cykle robocze, liczba obrotów) w celu maksymalizacji dostępności pracy silników elektrycznych. Odczytywanie zmiennych operacyjnych i pobieranie próbek odbywa się na podstawie ustalonych z góry cykli próbkowania, następnie dokonuje się analizy danych za pomocą algorytmów szeregowania czasowego mających na celu uruchomienie zleceń roboczych przed osiągnięciem zmiennych wartości dopuszczalnych. Podejście to jest wspierane przez narzędzia i technologie, takie jak aplikacje logiczne, które umożliwiają wykorzystanie graficznego interfejsu użytkownika w celu uzyskania dostępu do istotnych informacji o ich zasobach fizycznych HMI (Human Machine Interface), w tym kontroli i nadzoru przez pozyskanie z wykorzystaniem SCADA (Supervisory Control And Data Acquisition) danych, w tym również protokołów komunikacyjnych pomiędzy różnymi aplikacjami logicznymi.
    Źródło:
    Management Systems in Production Engineering; 2017, 3 (25); 205-216
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in marine diesel engines operating strategy
    Autorzy:
    Lus, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/27315859.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    marine diesel engines
    planned maintenance
    condition based maintenance
    vibration analysis
    Morskie silniki wysokoprężne
    konserwacja planowa
    wibracje
    Opis:
    Constant changes in the operating strategy of marine diesel engines are observed. They refer to whole engine and different functional systems of the engine in different range. The paper presents changes in marine diesel engines operating strategy. Gradual transition from simple failure response operating strategy - Corrective Maintenance (CM) to a reliability-oriented strategy - Reliability Centered Maintenance (RCM) has been described together with some remarks about Planed Maintenance (PM) systems and Condition Based Maintenance (CBM) systems with their latest form called CBM+. Some information about changes in diesel engines operating strategy in the Polish Navy (PN) at the turn of the last 35 years is also presented. An attempt to build engine analyzer for high-speed diesel engines at the Polish Naval Academy (PNA) in order to improve submarine diesel engines operating strategy is also described in the paper.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 739-746
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Data analysis to evaluate reliability of a main engine
    Autorzy:
    Anantharaman, M.
    Islam, R.
    Khan, F.
    Garaniya, V.
    Lewarn, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/116870.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    engine room
    main engine
    reliability of main engine
    main engine components
    Planned Maintenance System
    marine engine
    shipping industry
    Opis:
    Maritime transportation is the essence of international economy. Today, around ninety percent of world trade happens by maritime transportation via 50,000 merchant ships. These ships transport various types of cargo and manned by over a million mariners around the world. Majority of these ships are propelled by marine diesel engines, hereafter referred to as main engine, due to its reliability and fuel efficiency. Yet numerous accidents take place due to failure of main engine at sea, the main cause of this being inappropriate maintenance plan. To arrive at an optimal maintenance plan, it is necessary to assess the reliability of the main engine. At present the main engine on board vessels have a Planned Maintenance System (PMS), designed by the ship management companies, considering, advise of the engine manufacturers and/or ship’s chief engineers and masters. Following PMS amounts to carrying out maintenance of a main engine components at specified running hours, without taking into consideration the assessment of the health of the component/s in question. Furthermore, shipping companies have a limited technical ability to record the data properly and use them effectively. In this study, relevant data collected from various sources are analysed to identify the most appropriate failure model representing specific component. The data collected, and model developed will be very useful to assess the reliability of the marine engines and to plan the maintenance activities on-board the ship. This could lead to a decrease in the failure of marine engine, ultimately contributing to the reduction of accidents in the shipping industry.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 2; 403-407
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using Reliability Block Diagrams and Fault Tree circuits, to develop a Condition Based Maintenance Model for a Vessel’s Main Propulsion System and Related Subsystems
    Autorzy:
    Anantharaman, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117168.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Fault Tree
    Main Engine
    Propulsion System
    Condition Based Maintenance (CBM)
    Planned Maintenance System
    Reliability Block Diagrams
    Main Propulsion
    fault tree analysis (FTA)
    Opis:
    Merchant shipping has undergone a great transformation over the past three decades. The shipping market is highly competitive, which coupled with high crewing and fuel costs, leads to high operational costs. One of the paramount factor involved in vessel operation is the Maintenance cost and there is a dire need to keep this cost to a minimum. Fortunately the earlier policy of repair only maintenance in commercial shipping has been done away with, and was replaced by the policy of preventive maintenance. Planned Maintenance System was introduced by ship management companies in the early 90’s. Planned Maintenance offered benefits over the repair only policy, but has its own demerits. Many a time machinery equipment is opened up for routine maintenance after a specified time interval, irrespective of the need. This could lead to potential failures, which is explained by the fact that preventive maintenance resulted in meddling of a well set piece of machinery equipment, leading to its subsequent failure. This is where Condition based maintenance or CBM steps into prominence. CBM monitors the health of the machinery equipment, analyses the condition and helps you in decision making. The Main Propulsion system forms the heart of a vessel and we need to ensure its reliability, together with the reliability of its associated sub-systems. The entire system can be represented by reliability block diagrams, to show the interdependence of various components comprising the system. This helps in the decision making process of CBM whereby ship’s engineer may decide to stop the running machinery equipment, open and overhaul the same, else postpone the overhaul for a later safe date.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 409-413
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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