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Tytuł:
Reliability assessment of a main propulsion engine fuel oil system- what are the failure-prone components?
Autorzy:
Islam, R.
Anantharaman, M.
Khan, F.
Garaniya, V.
Powiązania:
https://bibliotekanauki.pl/articles/116811.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
engine room
main propulsion
fuel oil system
engine fuel oil
Failure Running Hours (FRH)
main engine fuel oil
fuel oil
failure-prone component
Opis:
The main propulsion engine is the heart of a vessel which carries the entire load of the ship and propels to move ahead. The main engine consists of various sub-systems, the fuel oil system is the most important one. Fuel oil system provides fuel to the engine via a fuel injector mounted on the engine cylinder head. During the voyage, the main engine of a ship encounters a variation in loads and stresses due to rough weather to harsh manoeuvring, which sometimes leads to the breakdown of the main engine. Fuel oil systems are identified as one of the main reasons for engine breakdown. Many accidents happened due to the failure of the main engine fuel oil system in the last two decades. To ensure safe and reliable main propulsion engine operation, it is required to assess the reliability of a fuel oil system. However, there is a significant lack of appropriate data to develop the reliability assessment techniques for fuel oil system. This study proposes appropriate data collection and analysis procedure for the reliability assessment of a fuel oil system. Data related to Failure Running Hours (FRH) of a fuel oil system is collected from 101 experienced marine engineers through a questionnaire. The collected data processed using a box plot and analysed for a normality test. It helps to identify the generalization of the data. Moreover, this study identified failure-prone components of a fuel oil system. The collected data will help in developing reliability assessment techniques for accurate reliability analysis of a fuel oil system. The identified failure-prone components will assist in future reliability analysis and risk mitigation strategies for improving the overall safety and reliability of the shipping industry.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 2; 415-420
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A proposal for marine fuel oil system arranged to burn heavy fuel oil and low sulphur distillate grade
Autorzy:
Krzyżanowski, J.
Nowak, P.
Powiązania:
https://bibliotekanauki.pl/articles/243358.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
automatic fuel change-over
chiller
Diesel Switch
Emission Control Areas
low-sulphur fuel
Opis:
The following paper introduces a retrofit proposal for marine fuel oil system arranged to burn heavy fuel oil and low-sulphur distillate grade. In the face of tighter requirements regarding sulphur content in fuel, which are obligatory both inside Emission Control Areas and among international waters, it is necessary to provide safe and efficient ship operation. Conventional methods for fuel change-over between heavy fuel oil and distillate grade are saddled with necessity of constant process control and compulsory engine load reduction during the realization of procedure. It ensures that maximum fuel temperature gradient amounts 2 °C/min, which protects injection system against thermal shock. The solution proposed by MAN Diesel & Turbo in cooperation with LEMAG Lehman & Michels turns mentioned procedure into unusual until now level thanks to guaranteed safety, control, smoothness and degree of automation. So-called Diesel Switch constitutes automatic fuel change-over system, which implements the process free from engine load factor. A built-in programmable logic controller and specially designed nonproportional valve enable to achieve smooth and linear characteristic of change. Furthermore, device controls other fuel oil system elements and also registers procedure run. The second element in retrofitted system concerns the way of distillate fuel cooling. Sulphur in the chemical bonds with other fuel components reveals lubricating properties. Reduction of its amount simultaneously with usage of low-viscosity distillate fuel creates a risk of damage to plunger and barrel assemblies. A guarantee of proper hydrodynamic lubrication film in injection system involves maintaining a minimal fuel viscosity of 2 cSt at engine inlet. Commonly used central cooling system on ships has a significant limitation. Water from low temperature cooling circuit, which provides a coolant cannot decrease fuel temperature below 40 °C. Applied solution proposed by Novenco is concerned with chilled water system assembly, which can cool down fuel even below 0 °C through vapour compression or an absorption cycle. As a result, low-sulphur fuel viscosity can be increased at any load independently of seawater temperature.
Źródło:
Journal of KONES; 2014, 21, 2; 161-168
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Step by Step Approach for Evaluating the Reliability of the Main Engine Lube Oil System for a Ships Propulsion System
Autorzy:
Anantharaman, M.
Khan, F.
Garaniya, V.
Lewarn, B.
Powiązania:
https://bibliotekanauki.pl/articles/116248.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Ship Propulsion
Main Engine
Main Propulsion
Lubricating Oil System
Markov Analysis
reliability
Propulsion System
Engine Lube Oil System
Opis:
Effective and efficient maintenance is essential to ensure reliability of a ship's main propulsion system, which in turn is interdependent on the reliability of a number of associated sub- systems. A primary step in evaluating the reliability of the ship's propulsion system will be to evaluate the reliability of each of the sub- system. This paper discusses the methodology adopted to quantify reliability of one of the vital sub-system viz. the lubricating oil system, and development of a model, based on Markov analysis thereof. Having developed the model, means to improve reliability of the system should be considered. The cost of the incremental reliability should be measured to evaluate cost benefits. A maintenance plan can then be devised to achieve the higher level of reliability. Similar approach could be considered to evaluate the reliability of all other sub-systems. This will finally lead to development of a model to evaluate and improve the reliability of the main propulsion system.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 367-371
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of microorganisms inhabiting in the environment of diesel and lubricating oil to the operation of machinery and marine equipment
Autorzy:
Krakowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/244397.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
microorganisms
petroleum products
fuel system
oil system
modelling
settling tanks
filters
Opis:
In this article, the problem of microbial contamination occurring in the fuels and oils was presented. It shows the types of microorganisms and the conditions for their growth. Then the factors influencing the growth of bacteria in petroleum products were described in detail. In the next section the symptoms, development and contamination of petroleum products was discussed. The influence of microbial contamination on the marine engine fuel system and the problems that this brings were also presented. In the following part of the article, the impact of microbial contamination of fuel tanks and purifiers was described. Then the causes of sludge were discussed and contamination layers in the settling tanks were presented. In the next part of the article the fuel impact modelling of microbial contamination on filtration efficiency was performed. The modelling presented in the article is an example showing how undesirable phenomenon is the microbial contamination and how pollution affects the other elements of the entire system. As part of the modelling, numerical model of filtration with the solution was presented. Then analysis results on the basis of the impurities concentration characteristics in the fuel as a function of the fouling thickness in the partition of the filter is performed. The development of impurities was divided into three stages. For each case the line trend and forecast further growth after the application of measures to prevent the proliferation of microorganisms were designated. The article was completed applications, of which the most important is the need to combat harmful microorganisms. And besides, there is a need to find new methods of combating microbial contamination that will not destroy beneficial microorganisms and will be environmentally friendly.
Źródło:
Journal of KONES; 2016, 23, 2; 201-208
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On safety of critical infrastructures modeling with application to port oil transportation system
Autorzy:
Kolowrocki, K.
Soszynska-Budny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069166.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
safety
multistate system
ageing
operation process
dependability
critical infrastructure
piping transport
Opis:
A new approach to safety investigations of multistate complex systems with dependent components at variable operation conditions called critical infrastructures is proposed. The safety function of the critical infrastructure system is defined and determined for an exemplary “m out of l” critical infrastructure. In the developed model, it is assumed that the system components have the multistate exponential safety functions with interdependent departures rates from the subsets of the safety states. The approach is adapted to safety prediction of oil piping transportation system operating at a maritime port.
Źródło:
Journal of Polish Safety and Reliability Association; 2013, 4, 2; 189--204
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja procesu eksploatacji portowego systemu transportu paliwa
Optimization of port oil transportation system operation processes
Autorzy:
Kołowrocki, K.
Soszyńska, J.
Powiązania:
https://bibliotekanauki.pl/articles/257580.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
paliwo
transport rurociągowy
niezawodność
eksploatacja
optymalizacja
oil
piping transport
reliability
complex system
operation process
optimization
Opis:
W artykule zintegrowany ogólny model niezawodności złożonych systemów technicznych w zmiennych warunkach eksploatacyjnych, łączący wielostanowe podejście do analizy niezawodności systemów z modelem semi-markowskim ich procesu eksploatacji oraz programowanie liniowe zastosowane są w transporcie morskim do optymalizacji procesu eksploatacji skutkującej podwyższeniem niezawodności portowego rurociągowego systemu transportu paliwa.
The joint general model of reliability of complex technical systems in variable operation conditions linking a semi-markov modeling of the system operation processes with a multi-state approach to system reliability analysis and linear programming are applied in maritime industry to operation process optimization improving reliability of a port piping oil transportation system.
Źródło:
Problemy Eksploatacji; 2009, 4; 153-164
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling the impact of microbial contamination of fuel filtration efficiency
Autorzy:
Krakowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/134199.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
modeling
filtration
microorganisms
petroleum products
fuel system
oil system
modelowanie
filtracja
mikroorganizmy
przetwory naftowe
układ paliwowy
układ olejowy
Opis:
In this paper the concept of filtration and the problem of microbial contamination occurring in the fuels and oils was presented. Then the factors influencing the growth of bacteria in petroleum products were described in detail. In the next part of the article modeling of the impact of fuel microbial contamination on filtration efficiency was performed. The modeling presented in the article is an example showing how undesirable phenomenon is the microbial contamination and how pollution affects the other elements of the entire system. As part of the modeling, numerical model of filtration with the solution was presented. Then analysis results on the basis of the impurities concentration characteristics in the fuel as a function of the fouling thickness in the partition of the filter is performed. The development of impurities was divided into three stages. In the article for one case the trend line was presented. The article was completed conclusions.
Źródło:
Combustion Engines; 2017, 56, 2; 133-136
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The diagnosis of marine gas turbine engine LM 2500 on the basis of oil contaminants research
Diagnozowanie okrętowych silników turbinowych LM 2500 na podstawie badań zanieczyszczeń mechanicznych w oleju
Autorzy:
Mironiuk, W.
Powiązania:
https://bibliotekanauki.pl/articles/257294.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
turbinowy silnik spalinowy
diagnostyka
system olejowy
łożysko
friction heat
bearing friction work
oil system
gas turbine engine
diagnosis
Opis:
During the operation a gas turbine engine, a more modest method of research is brought into effect. One of the basic methods of estimating the technical condition of gas turbine engines is oil analysis. The x-ray method of radioisotope fluorescence was used to estimate the technical condition of gas turbine engines based on oil research. This method has also been satisfactorily used in aircraft engine diagnosis. This paper presents the method of diagnosis of the bearings of marine gas turbines based on studies on the mechanical contamination in oil. The results of oil mechanical contaminant research vs. time of engine work are presented. Based on experiments, the resulting analytical function that makes calculating the diagnosis measure of the gas turbine engine bearings system was worked out.
W eksploatacji okrętowych silników turbinowych powszechnie wprowadzane są coraz nowsze metody badań diagnostycznych. Jednak jedną z podstawowych metod nadzoru stanu technicznego silników są analizy olejowe. W badaniach diagnostycznych silników turbinowych na podstawie zanieczyszczeń metalicznych w oleju zastosowano, wcześniej wdrożoną w lotnictwie wojskowym, metodę rentgenowskiej fluorescencji radioizotopowej XRF. Metoda ta stanowi użyteczne narzędzie w ocenie stanu technicznego układów mechanicznych silnika. W artykule przedstawiono krótki opis metodyki badań diagnozowania stanu technicznego okrętowych turbinowych silników spalinowych na podstawie badań pierwiastków Fe i Cu w oleju. Otrzymane wyniki badań ekspertmentalnych przedstawiono w postaci linii trendu wybranych pierwiastków w funkcji czasu pracy silnika. Ponadto zaprezentowano, opracowany na podstawie badań oleju, parametr diagnostyczny łożysk silnika.
Źródło:
Problemy Eksploatacji; 2008, 2; 195-204
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Silnik lotniczy jako obiekt badań tribologicznych
Aero-engine as the object of tribological research
Autorzy:
Nidzgorska, Adrianna
Witoś, Mirosław
Perczyński, Jerzy
Kułaszka, Artur
Powiązania:
https://bibliotekanauki.pl/articles/38933889.pdf
Data publikacji:
2023
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
lotnictwo
tarcie
diagnostyka
badanie tribologiczne
silnik lotniczy
instalacja olejowa
aviation
friction
diagnostics
tribological testing
aero-engine
oil system
Opis:
Podczas pracy silników lotniczych (turbinowych i tłokowych) występują procesy zużycia w węzłach tribologicznych, które w znaczny sposób wpływają na niezawodność i bezpieczeństwo eksploatacji statków powietrznych. W artykule przedstawiono aspekty diagnostyki tribologicznej silników lotniczych bazującej na okresowych badaniach próbek środka smarnego w laboratoriach. Na początku przedstawiono obiekt badań z uwzględnieniem cech konstrukcyjnych, parametrów pracy i stosowanych środków smarnych oraz podstawy teoretyczne badań tribologicznych. Następnie opisano metody badań stosowane w diagnostyce tribologicznej silników lotniczych, uwzględniając procesy starzenia i zanieczyszczenia środków smarnych, normy, metodyki badawcze i doświadczenia eksploatacyjne opisane w literaturze, w tym krzywą podatności eksploatacyjnej. Możliwości metod badawczych zobrazowano wynikami z okresowych badań tribologicznych silników turbinowych, uzyskanymi w akredytowanym laboratorium diagnostyki systemów tribologicznych. W dalszej części wskazano rolę analizy trendu i kryteriów statystycznych w procesie diagnozowania i zarządzania ryzykiem eksploatacji silników lotniczych, eksploatowanych zarówno według stanu technicznego, jak i planowanych obsług technicznych (resursów). Zasygnalizowano możliwość poprawy wiarygodności diagnostyki tribologicznej silników lotniczych na bazie doświadczeń z przemysłu – monitorowania wybranych parametrów tribologicznych w czasie rzeczywistym. W podsumowaniu wskazano na wysoką efektywność i rolę diagnostyki tribologicznej w utrzymaniu bezpieczeństwa eksploatacji floty różnych typów statków powietrznych.
During the operation of aero-engines (turbine and piston engines), wear processes occur in tribological nodes, which significantly affect the reliability and safety of flight operations. This paper presents aspects of tribological diagnostics of aircraft engines based on periodic testing of lubricant samples in laboratories. Firstly, the object of research with its design features, operating parameters and used lubricants is presented, as well as the theoretical basis of tribological testing. This was followed by a description of the testing methods used in tribological diagnostics of aero-engines, taking into account lubricant degradation and contamination processes, standards, testing methodologies and operating experience described in the literature, including the machine failure curve. Next, the capabilities of the testing methods are illustrated with results from periodic tribological testing of turbine engines, obtained at an accredited tribological systems diagnostics laboratory. In the following section, the role of trend analysis and statistical criteria in the process of diagnosing and managing the risk of operation of aero-engines, exploited according to both their technical condition and planned maintenance, was indicated. Then, the possibility of improving the reliability of tribological diagnostics of aero-engines on the basis of experience from industry - real-time monitoring of selected tribological parameters - was signalled. In conclusion, the high efficiency and role of tribological diagnostics in maintaining the operational safety of a fleet of different aircraft types is indicated.
Źródło:
Journal of KONBiN; 2023, 53, 3; 87-128
1895-8281
2083-4608
Pojawia się w:
Journal of KONBiN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Considerations regarding qiling system for offshore wind turbines
Autorzy:
Panaitescu, M.
Panaitescu, F. V.
Panait, P. G.
Scupi, A.
Powiązania:
https://bibliotekanauki.pl/articles/24201414.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
modeling and simulations
simulation study
wind turbine
lubricating oil system
wind loads
wind influence
floating wind farms
lubricating oil analysis
Opis:
Power from renewable sources would play a key role in the future of electricity .The wind energy is one of the goal of EU's commitment, which want to develop offshore wind potential [1], [2]. Lubrication of wind turbines is very important for maintenance [3] . The purpose of this paper is to present some considerations about monitoring oiling system. This system monitors kinematic data in real time. The importance of monitoring real data with this system help us to simulate lubrication for various types of wind turbine reducers in order to choose the optimal form of the lubrication system and for good maintenance.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 563--567
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on the Automatic Cylinder Oil Mixing System for Two Stroke Dual Fuel Crosshead Marine Engines
Autorzy:
Markiewicz, Włodzimierz
Powiązania:
https://bibliotekanauki.pl/articles/2064689.pdf
Data publikacji:
2020
Wydawca:
STE GROUP
Tematy:
ACOM
cylinder lubrication oil
incorrect cylinder lubrication
dual fuel engine
triple fuel engine
sweep test
Opis:
The paper presents selected issues related to cylinder lubrication of the dual fuel, two stroke, high pressure fuel supply engine (MAN MEGI). I showed causes and effects of incorrect liner lubrication. These are based on results of sweep tests and scavenge space inspections carried out during first weeks of vessel’s operation, following delivery to the Fleet. The paper also describes methods required in avoidance of under and over lubrication, including test procedures. Operational observations were provided. Recommendations for system operation are presented.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 13--27
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety of multistate ageing systems
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2068950.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
safety function
risk function
multistate system
ageing
oil pipeline system
Opis:
Basic notions of the ageing multistate systems safety analysis are introduced. The system components and the system multistate safety functions are defined. The mean values and variances of the multistate systems lifetimes in the safety state subsets and the mean values of their lifetimes in the particular safety states are defined. The multi-state system risk function and the moment of exceeding by the system the critical safety state are introduced. The exemplary safety structures of the multistate systems with ageing components are defined and their safety functions are determined. As a particular case, the safety functions of the considered multistate systems composed of components having exponential safety functions are determined. Applications of the proposed multistate system safety models to the evaluation and prediction of the safty characteristics of the oil piping transportation system is presented as well.
Źródło:
Journal of Polish Safety and Reliability Association; 2016, 7, 3; 131--142
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adjustment of cylinder lubricating oil of marine slow-speed engines
Autorzy:
Van Doan, D.
Murawski, L.
Powiązania:
https://bibliotekanauki.pl/articles/244949.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cylinder lubricating oil system
slow-speed engine
optimal adjustment
Sulzer diesel engines
układ smarowania cylindrycznego oleju
silnik obrotowy
regulacja optymalna
silnik wysokoprężny Sulzer
Opis:
The article refers to the common task of lubrication system. The fast development of the world's maritime sector, makes competition among countries increasing. Because of the deterioration of the global economy, the shipping companies, ship-owners want to reduce freight rates, to meet safety requirements, as well as improving conditions of exploitation and operating the machines to prevent the pollution of the marine environment. While exploiting the diesel engine in general and Sulzer diesel engines in particular, ship owners are always eager to reduce the operating cost and still ensure the engine running are safe and reliable. Provide an example of how to calculate the amount of cylinder lubricating oil according to the theory of slow-speed marine engines. The article refers to the costs of the operation and exploitation of ship, offer solution to reduce extraction costs by optimizing the amount of lubricating oil for the cylinders. The analyses in the article are based on Sulzer RTA engines. The article also refers to the level of actual lubrication oil for the cylinders of slow-speed marine engines during operation and exploitation based on the practical experience of the chief engineers, who had ever worked with these engines. The optimal adjustment of cylinder lubricating oil of Sulzer RTA diesel engines to reduce the operating cost but still ensure the engine running are safe and reliable and the problems need to be noted in the process of adjustment.
Źródło:
Journal of KONES; 2017, 24, 1; 113-119
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental research of oil pump for a compression-ignition aircraft engine
Autorzy:
Szlachetka, Marcin
Sochaczewski, Rafał
Gęca, Michał Jan
Powiązania:
https://bibliotekanauki.pl/articles/133729.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
opposed-piston engine
aircraft propulsion system
oil system
oil pump
silnik wysokoprężny
silnik o tłokach przeciwbieżnych
układ napędowy samolotu
układ olejowy
pompa oleju
Opis:
The paper presents an analysis of the constructions of oil pumps for an aircraft compression ignition engine. It is a two-stroke liquid-cooled engine with a power of 100 kW. The system has 3 cylinders and 6 opposed pistons. The paper estimates the required oil pump capacity to make the engine components well-lubricated. Next, automotive oil pumps for diesel engines are analyzed to select a correct pump for aircraft diesel engine applications. Three pump constructions of different constructions and dimensions of a rotor were select-ed. A measurement bench was designed and built to test these oil pumps in the range of pump shaft speeds from 0 to 4500 rpm and volumetric flow rate up to 150 l/min. The bench also enables stabilization of oil temperature at the required level within the range from 30 to 120oC. In addition, flow resistance through engine slide bearings was simulated by changing the position of a throttling valve at the pump output to regulate pressure in the range of 0-700 kPa. The obtained capacity characteristics of individual pumps versus on oil pressure and temperature allowed us to find an appropriate oil pump to make individual engine nodes well-lubricated.
Źródło:
Combustion Engines; 2019, 58, 4; 142-146
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical identification and prediction of the port oil pipeline system’s operation process and its reliability and risk evaluation
Autorzy:
Kołowrocki, K.
Soszyńska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069675.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
semi-Markov processes
system operations process
reliability
Opis:
In the paper a Semi-markov processes are used to construct a general model of complex industrial systems’ operation processes. Main characteristics of this model are determined as well. In particular case, for a port oil pipeline transportation system, its operation states are defined, the relationships between them are fixed and particular model of its operation process is constructed and its main characteristics are determined. Further, the joint model of the system operation process and the system reliability is defined and applied to the reliability and risk evaluation of the port oil pipeline transportation system.
Źródło:
Journal of Polish Safety and Reliability Association; 2009, 2; 241--250
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary Monte Carlo approach to complex technical system reliability analysis
Autorzy:
Kuligowska, E.
Powiązania:
https://bibliotekanauki.pl/articles/2069438.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
reliability
operation process
complex system
Monte Carlo simulation
piping oil transportation system
Opis:
The paper explores the mathematical and computer modeling of complex technical systems related to their operation processes. The complex technical system with the reliability structure and components’ reliability parameters changing at the various operation states is defined. The selected system operation process parameters and the hypothetical distribution functions of the conditional sojourn times at the operation states are defined and identified. The reliability functions of the multistate system and components are introduced and their parameters are identified. The Monte Carlo simulation method is proposed to the complex system reliability evaluation. Moreover, the proposed theoretical and simulation tools are supported with the practical application to the multi-state port oil piping transportation system reliability analysis.
Źródło:
Journal of Polish Safety and Reliability Association; 2012, 3, 1; 59--72
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena niezawodności i gotowości portowego systemu transportu paliwa
The Evaluation of Reliability and Availability of a Port Oil Transportation System
Autorzy:
Kołowrocki, K.
Soszyńska, J.
Powiązania:
https://bibliotekanauki.pl/articles/906327.pdf
Data publikacji:
2005
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
portowe systemy transportowe
Inżynieria Ruchu Morskiego 2005
niezawodność
gotowość
port transportation systems
reliability
availability
Opis:
Zaproponowano użycie granicznych funkcji do oceny niezawodności i gotowości systemów oraz zastosowanie procesów Semi-Markova do modelowania ich procesu eksploatacji. Analizowano też podejście do rozwiązania bardzo ważnego, praktycznego problemu powiązania niezawodności systemów z ich procesem eksploatacji. Zastosowanie przedstawionej metody zostało omówione na przykładzie oceny niezawodności i gotowości portowego systemu transportu paliwa.
The paper proposes the use of the limit reliability functions in the systems' reliability and availability evaluation and semi-markov processes application for their operation modelling. The paper offers an approach to the solution of a practically very important problem of linking the systems' reliability and their operation processes. An application of the proposed method is illustrated in the reliability, risk and availability evaluation of a port oil transportation system.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2005, 6 (78); 223-233
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of port oil piping transportation system operation process including operating environment threats
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2068957.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
port oil piping transport
critical infrastructure
operation process
operating environment threats
Opis:
In the paper, the traditional semi-Markov approach to a complex technical system operation process modeling is proposed to model and to identify the port oil piping transportation system operation process including operating environment threats.
Źródło:
Journal of Polish Safety and Reliability Association; 2016, 7, 3; 99--112
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic non-destructive quality inspection system for oil palm fruits
Autorzy:
Makky, M.
Soni, P.
Salokhe, V.M.
Powiązania:
https://bibliotekanauki.pl/articles/24184.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
non-destructive quality
inspection system
fruit
African oil palm
quality inspection
fresh fruit
bunch
machine vision
Opis:
In this research a non-destructive, rapid and cost effective examination machine for the estimation of the ripeness fraction, oil content and free fatty acid level in oil palm fresh fruits bunch was developed. The automatic machine-vision based in- spection system provided consistency, rapid estimation and accep- table accuracy results in non-dest ructive manner. Fresh fruits bunch samples from Tenera cultivar (7 to 20 years trees) were taken from Cimulang plantation, Bogor, Indonesia. Two statistical analysis methods were used: a forward stepwise multiple linear regression analysis and a multilayer-perceptron artificial neural network analysis. The best prediction of ripeness and oil content models were obtained using the latter method, while the best free fatty acid prediction model was developed by the first method. The models were then employed in the machine-vision inspection systems of the machine. The system best prediction accuracy of ripeness, oil content and free fatty acid models was 93.5, 96.41, and 89.32%, with standard error of prediction being 0.065, 0.044 and 0.068, respectively. The system was tested through a series of field tests, and successfully examined more than 12 t of fruits bunch per hour, without causing damage.
Źródło:
International Agrophysics; 2014, 28, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oil transport in port. Part 0. Port oil piping transportation system safety without outside impacts
Autorzy:
Kołowrocki, K.
Kuligowska, E.
Soszyńska-Budny, J.
Torbicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/2068774.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
port oil piping transportation system
outside impacts
safety
cost analysis
Opis:
The paper is concerned with the model of critical infrastructure safety prediction without considering outside impacts. The general approach to the prediction of critical infrastructure safety is proposed and the safety indicators are defined for a critical infrastructure free of any outside impacts. Moreover, there is presented the model application for port oil piping transportation system safety prediction. Further, the cost analysis of critical infrastructure operation process is proposed and applied to the considered piping system.
Źródło:
Journal of Polish Safety and Reliability Association; 2018, 9, 2; 1--10
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
"Emergency Response Plan" Automated System for Oil Production and Transportation Enterprises
Autorzy:
Voytyuk, Irina N.
Kopteva, Alexandra V.
Skamyin, Alexandr N.
Powiązania:
https://bibliotekanauki.pl/articles/1839580.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
oil production
oil transportation
emergency response
software
automated system
database management system
data processing centre
Opis:
In order to increase the efficiency of implementing the emergency response measures, the emergency response plan drawing up, revision and implementation at oil production enterprises, it is expedient to use an analogue of the supervisory control and data acquisition (SCADA) system, which generates an interactive mode that allows interaction with the person in charge for localizing and eliminating the consequences of accidents that negatively affect, inter alia, the environmental situation. The SCADA system was developed on the basis of the approved document "Emergency Response Plan" and provides for data exchange with the automated systems of the enterprise to form a complete description of the situation for the person in charge for localizing and eliminating the consequences of accidents. The automated system application software was developed using high-level programming languages (Embarcadero Delphi or analogues) and technologies for direct access to the Oracle database management system. The use of an automated system is feasible for large enterprises of the extractive and processing industries with the possibility of integration into the automated Manufacturing Execution System (MES-systems) of an enterprise.
Źródło:
Journal of Ecological Engineering; 2021, 22, 1; 76-82
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling climate-weather change process including extreme weather hazards for port oil piping transportation system
Autorzy:
Jakusik, E.
Kołowrocki, K.
Kuligowska, E.
Soszyńska-Budny, J.
Torbicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/2068975.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
climate-weather change process
semi-Markov model
extreme weather hazard states
port oil transportation syste
Opis:
The climate-weather change process for the critical infrastructure operating area is considered and its states are defined. Further, the semi-Markov process is used to create a general probabilistic model of the climate-weather change process for the critical infrastructure operating area. To construct this model the vector of probabilities of the climate-weather change process staying at the initials climate-weather states, the matrix of probabilities of the climate-weather change process transitions between the climate-weather states, the matrix of conditional distribution functions and the matrix of conditional density functions of the climate-weather change process conditional sojourn times at the climate-weather states are defined. Preliminary applications of the proposed model to the climate-weather change process for the port oil transportation system operation area are presented.
Źródło:
Journal of Polish Safety and Reliability Association; 2016, 7, 3; 31--40
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification and prediction of port oil piping transportation system operation process related to climate-weather change
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Torbicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/2068858.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
operation process
climate-weather change
identification
prediction
piping transportation system
Opis:
The paper is concerned with an application of the critical infrastructure operation process related to climateweather change model to identification and prediction of this process for the port oil piping transportation system. There are distinguished three different processes for the corresponding piping operating area. Further, using identified parameters of the piping operation process and the piping operating area climate-weather change processes, there are determined the unknown parameters of those processes. Namely, there are determined the probabilities of the processes staying at the initial states, the probabilities of the transitions between the states and the mean values of the processes' conditional sojourn times at particular states. Finally, there are predicted the main characteristics of the piping operation process related to climate-weather change processes at the distinguished operating area.
Źródło:
Journal of Polish Safety and Reliability Association; 2017, 8, 2; 113--120
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification and prediction of climate-weather change process for port oil piping transportation system operating area
Autorzy:
Torbicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/2068856.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
climate-weather change process
identification
prediction
piping operating area
extreme weather hazards
Opis:
The paper is concerned with an application of the climate-weather change process for a critical infrastructure operating area model to identification and prediction of this process for the port oil piping transportation system operating area. For the considered piping operating area, there are distinguished three different climate-weather change processes and their states. Further, there are identified the unknown parameters of those processes, i.e. the probabilities of the climate-weather change processes staying at the initial climate-weather states, the probabilities of the climate-weather change transitions between the climate-weather states and the mean values of the climate-weather change processes' conditional sojourn times at particular states. Finally, there are predicted the main characteristics of the climate-weather change processes at the distinguished operating area.
Źródło:
Journal of Polish Safety and Reliability Association; 2017, 8, 2; 107--112
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oil transport in port. Part 1. Port oil piping transportation system safety and resilience impacted by its operation process
Autorzy:
Kołowrocki, K.
Kuligowska, E.
Soszyńska-Budny, J.
Torbicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/2068781.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
port oil piping transportation system
operation impacts
safety
resilience
cost analysis
cost optimization
Opis:
The paper is concerned with the model of critical infrastructure safety prediction with considering its operation process impacts. The general approach to the prediction of critical infrastructure safety and resilience is proposed and the safety and resilience indicators are defined for a critical infrastructure impacted by its operation process. Moreover, there is presented the model application for port oil piping transportation system safety and resilience prediction. Further, the cost analysis of critical infrastructure operation process is proposed and applied to the considered piping system.
Źródło:
Journal of Polish Safety and Reliability Association; 2018, 9, 2; 11--28
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 158

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