Development Measures to Enhance the Ecological Safety of Ships and Reduce Operational Pollution to the Environment

Melnyk, Oleksiy; Onyshchenko, Svitlana; ONISHCHENKO, Oleg

doi:10.20858/sjsutst.2023.118.13

Cited by 5 publications

(3 citation statements)

References 4 publications

(4 reference statements)

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“…These include nitrogen oxides NO X , sulfur oxides SO X , carbon monoxide CO, and unburned hydrocarbons C n H m . The minimization of NO X , SO X , CO emissions that enter the atmosphere with the exhaust gases of marine diesels is an urgent task, many studies and developments are directed to its solution [8][9][10].…”

Section: -9969mentioning

confidence: 99%

Analysis of methods of managing the environmental safety of the navigation passage of ships of maritime transport

Sagin,

Madey

2023

TAPR

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The requirements of the MARPOL international convention on ensuring the environmental performance of marine diesel engines in relation to the emission of sulfur oxides, as well as marine fuels during navigation passages of sea transport vessels in special ecological areas, are given. The use of scrubber cleaning of exhaust gases and the use of fuel mixtures, which include biodiesel fuel, are considered as methods that meet these requirements. The research was carried out on ships of the Bulker Carrier class with deadweight of 63,246 tons during the navigation transition between the ports of Northern Europe. One of the vessels used scrubber cleaning of exhaust gases as a method of environmental safety management. The other is the use of fuel mixtures, which include biodiesel fuel. Both vessels are equipped with a 5S60ME-C8.2 MAN-Diesel&Turbo marine diesel engine as the main engine, and three 6EY18ALW Yanmar diesel engines as auxiliary engines. The ratio of sulfur oxides to carbon oxides – SO2/CO2 – was chosen as an indicator for evaluating the effectiveness of environmental safety management methods. This value was monitored and regulated by an automatic monitoring system. It was found that both methods meet the requirements of the MARPOL convention, namely, they will support the SO2/CO2 ratio in the range of 2.29–4.17 (when in special environmental control zones) and in the range of 6.46–20.83 (when in outside the zone of special environmental control). The use of environmental safety management methods increases energy costs for ensuring this process. When using exhaust gas scrubbing, additional power losses reach 237–278 kW. In the case of using a fuel mixture that includes biodiesel fuel, power losses amount to 18–20 kW. It has been experimentally confirmed that the use of a fuel mixture that includes biodiesel fuel is characterized by a lower level of environmental sustainability. At the same time, compared to the use of scrubber cleaning of exhaust gases, this method requires less energy consumption and is also characterized by simpler additional equipment. In this regard (and also taking into account that all the requirements of Annex VI MARPOL are provided), it is recommended as the main one to ensure the environmental safety of navigation passages of sea transport vessels.

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Section: -9969mentioning

confidence: 99%

Analysis of methods of managing the environmental safety of the navigation passage of ships of maritime transport

Sagin,

Madey

2023

TAPR

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“…This phenomenon is most negative for two-stroke diesel engines, which are characterized by an increased mass of crank mechanism parts. In this regard, shock loads on crosshead and crank bearings increase sharply [17,18].…”

Section: Introductionmentioning

confidence: 99%

Development of method for managing risk factors for emergency situations when using low-sulfur content fuel in marine diesel engines

Sagin,

Sagin

2023

TAPR

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The operation process of marine diesel engines when using fuel with a sulfur content of no more than 0.1 % was chosen as the object of the study. Similar types of fuel are characterized by a lower auto-ignition temperature and higher calorific value. During combustion, this leads to an increase in the rate of fuel combustion and the degree of pressure increase during combustion, precisely because of this, the dynamic loads on the parts of the cylinder-piston group and diesel engine bearings increase. Also, this (due to the increase in temperature at the end of combustion) creates conditions for an increase in the concentration of nitrogen oxides in diesel exhaust gases. This (namely, the change in dynamic and thermal loads that occur during the use of fuels with a reduced sulfur content in marine diesel engines) leads to the occurrence of emergency situations. As a method of managing the risk of such emergency situations, the reconfiguration of the high-pressure fuel equipment, namely the change of the advance angles of the fuel supply, is proposed. The research was carried out on a vessel intended for the transportation of containers and on which a marine diesel engine 8K80ME-8.2-TII MAN-Diesel & Turbo was installed as the main engine. Combustion pressure, the degree of pressure increase during combustion, the temperature of exhaust gases, and the concentration of nitrogen oxides in exhaust gases were chosen as the indicators for evaluating the use and implementation of the proposed method. It has been experimentally proven that this results in an increase in the environmental sustainability of diesel operation by 3.61–10.97 %, an increase in thermal stability – up to 2.54 %, and an increase in dynamic stability – up to 4.82 %. This is due to the shift of the self-ignition and combustion process towards expansion and the corresponding decrease in pressure and temperature at the end of combustion. The most favorable use of this method is on modern diesel engines that have an electronic fuel injection control system, so they do not require mechanical reconfiguration of fuel pumps. Taking this into account, the method based on the change of fuel advance angles is defined as the one that provides management of the risk factors of emergency situations when using low-sulfur fuel in marine diesel engines.

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“…The articles [28][29][30][31][32][33][34] cover diverse facets of ship operation and maritime safety, delving into topics such as optimizing speed modes for oversized cargo transportation, enhancing situational awareness at sea to ensure safe ship operation, implementing autonomous vessel concepts and mathematical models in management, and addressing environmental challenges through the reduction of greenhouse gas emissions and operational pollution. These studies underscore the importance of an integrated approach in evaluating vulnerability, cargo transportation e ciency, and the implementation of measures to enhance the environmental safety of shipping.…”

Section: Introductionmentioning

confidence: 99%

Optimization of maintenance and chemical cleaning methods for shipboard seawater desalination plants

Melnyk,

Onishchenko,

Shumylo

et al. 2024

Preprint

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Desalination plants play a critical role in providing fresh water to regions with limited freshwater resources. These plants utilize advanced technologies to extract salt and impurities from seawater, providing a sustainable source of drinking water. This paper discusses optimal maintenance strategies for desalination plants with a particular focus on addressing water supply issues. A detailed analysis of chemical treatment methods is presented, considering the unique aspects of water treatment in desalination processes. The article reviews current approaches, including non-disassembling and disassembling methods, providing a comprehensive overview of their application in desalination. The advantages and disadvantages of each method are discussed in detail, emphasizing their impact on water quality and overall durability of desalination systems. This article is of practical importance in the field of desalination, offering valuable insights for improving maintenance efficiency and solving operational problems, ultimately ensuring the longevity and reliability of desalination plants.

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Development Measures to Enhance the Ecological Safety of Ships and Reduce Operational Pollution to the Environment

Cited by 5 publications

References 4 publications

Analysis of methods of managing the environmental safety of the navigation passage of ships of maritime transport

Analysis of methods of managing the environmental safety of the navigation passage of ships of maritime transport

Development of method for managing risk factors for emergency situations when using low-sulfur content fuel in marine diesel engines

Optimization of maintenance and chemical cleaning methods for shipboard seawater desalination plants

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