黑料不打烊

Auk拧t懦j懦 kolegini懦 studij懦 baigiam膮j寞 darb膮 sudaro: 61 puslapis, 24 paveikslai, 9 lenteli懦, 39 literat奴ros pozicijos, 11 pried懦. Baigiamajame darbe analizuojamos Standard Flex 300 klas臈s patrulinio laivo ma拧in懦 skyriaus modernizavimo galimyb臈s, integruojant 拧iuolaikin臋 duj懦 turbin膮 寞 esam膮 energetin臋 sistem膮. Baigiamojo darbo tikslas 鈥� remiantis moksline bei technine literat奴ra, gamintoj懦 duomenimis i拧analizuoti duj懦 turbinos diegimo techninius ir eksploatacinius aspektus. 漠vertinti poveik寞 laivo patikimumui ir taktiniam paj臈gumui, kartu pademonstruojant 寞gytas teorines ir praktines 啪inias. Tyrimo objektu pasirinktas Lietuvos karini懦 j奴r懦 paj臈g懦 modulin臈s klas臈s patruliniai laivai 鈥濬lyvefisken鈥� (StanFlex 300). Pirmoje dalyje nagrin臈jama laivo paskirtis, dabartin臈 energetin臈 sistema, pagrindiniai ir pagalbiniai varikliai, j懦 veikimo principai bei sistemos. Antroje dalyje aptariama originali duj懦 turbinos koncepcija, analizuojami 拧iuolaikini懦 duj懦 turbin懦 technologiniai sprendimai, j懦 efektyvumas, integraciniai reikalavimai ir eksploataciniai i拧拧奴kiai. Pateikiami skai膷iavimai susij臋 su naujos duj懦 turbinos diegimu. Vertinamas galios balansas, degal懦 s膮naudos, terminiai veiksniai bei 寞taka laivo stovumui. Darbo rezultatai prisideda prie karini懦 laiv懦 modernizavimo ir energetinio efektyvumo tyrim懦, atskleid啪iant 拧iuolaikines duj懦 turbinos integravimo 寞 StanFlex 300 klas臈s platform膮 technin寞 pagr寞stum膮. Galim膮 prid臈tin臋 vert臋 laivo taktiniam paj臈gumui, taip pat pateikiant praktines 寞啪valgas, d臈l efektyvumo bei ekonomi拧kumo.

The final thesis of higher professional studies consists of 61 pages, 24 figures, 9 tables, 39 references and 11 appendices. The thesis analyzes the modernization possibilities of the machinery space of a Standard Flex 300 class patrol vessel by integrating a modern gas turbine into the existing power system. The aim of the thesis is to examine the technical and operational aspects of gas turbine installation based on scientific and technical literature as well as manufacturer data, and to assess its impact on the vessel鈥檚 reliability and tactical capability, while demonstrating the theoretical and practical knowledge acquired during the studies. The object of the research is the Lithuanian Navy modular class patrol vessel Flyvefisken (StanFlex 300). The first part of the thesis examines the vessel鈥檚 purpose, current power system, main and auxiliary engines, their operating principles, and associated systems. The second part analyzes modern gas turbine technological solutions, their efficiency, integration requirements, and operational challenges. Calculations related to the installation of a new gas turbine are presented, including assessments of power balance, fuel consumption, thermal factors, and the impact on vessel stability. The original gas turbine concept is also discussed The results of the thesis contribute to research on naval vessel modernization and energy efficiency by revealing the technical feasibility of integrating a modern gas turbine into the Stan Flex 300 class platform. The study highlights the potential added value to the vessel鈥檚 tactical performance and provides practical insights into improving efficiency and cost-effectiveness.

Bakalauro baigiam膮j寞 darb膮 sudaro: 64 puslapi懦, 12 paveiksl懦, 13 lenteli懦, 24 literat奴ros pozicijos, 8 pried懦. Baigiamajame darbe analizuojamos j奴r懦 laiv懦 elektros energijos tiekimo sutrikim懦 鈥� dalini懦 atsijungim懦 ir visi拧ko elektros energijos praradimo 鈥� prie啪astys bei pateikiamos priemon臈s, kaip didinti elektros energijos tiekimo sistemos patikimum膮 Ro-Pax tipo keltuose 鈥濾ictoria Seaways鈥� ir 鈥濸atria Seaways鈥�. Tyrimo problema yra ta, kad net trumpalaikis 寞tampos praradimas laive gali sutrikdyti valdymo, navigacijos, siurbli懦, v臈dinimo, ry拧io ir saugos sistem懦 darb膮, tod臈l svarbu 寞vertinti ne tik pa膷ias gedim懦 prie啪astis, bet ir j懦 vystymosi eig膮, automatikos reakcij膮 bei 寞gulos veiksmus. Darbo tikslas 鈥� i拧analizuoti elektros energijos atsijungim懦 prie啪astis ir pateikti priemones, ma啪inan膷ias j懦 tikimyb臋 bei pasekmes. Darbe taikyta mokslin臈s ir profesin臈s literat奴ros, normini懦 dokument懦, laiv懦 technin臈s dokumentacijos ir praktikos metu surinktos informacijos analiz臈. Gauti rezultatai parod臈, kad kritiniais veiksniais tampa generatori懦 ir veleninio generatoriaus darbo re啪imo sutrikimai, automatinio 寞tampos reguliatoriaus gedimas, galios deficitas, apsaug懦 nustatymai, ar Galios Reguliavimo Sistemos (PMS) reakcijos greitis bei 寞gulos veiksmai elektros energijos tiekimo atk奴rimo metu. Pasi奴lymuose numatyta reguliariai tikrinti AVR, veleninio generatoriaus guolio b奴kl臋, r臈lines apsaugas bei PMS reakcij膮, UPS baterijas ir avarinio generatoriaus funkcionalum膮. Taip pat si奴loma per啪i奴r臈ti apkrov懦 atjungimo pakopas, atnaujinti 寞gulos veiksm懦 instrukcijas ir vykdyti periodines 鈥瀊lackout鈥� situacijos i拧vengimo treniruotes. 艩ios priemon臈s gali suma啪inti elektros energijos atsijungim懦 rizik膮, sutrumpinti elektros tiekimo atk奴rimo laik膮 ir padidinti laivo eksploatacijos saugum膮.

The bachelor's thesis consists of: 64 pages, 12 figures, 13 tables, 24 references, 8 appendices. This final thesis analyses the causes of ship electrical power supply disturbances 鈥� partial disconnections and complete loss of electrical power 鈥� and presents measures for improving the reliability of the electrical power supply system on Ro-Pax ferries 鈥淰ictoria Seaways鈥� and 鈥淧atria Seaways鈥�. The research problem is that even a short-term loss of voltage on board can disrupt the operation of control, navigation, pumping, ventilation, communication and safety systems. Therefore, it is important to evaluate not only the causes of failures, but also their development, the response of automation systems and the actions of the crew. The aim of the thesis is to analyse the causes of electrical power interruptions and to propose measures that reduce their probability and consequences. The methods applied in the work include the analysis of scientific and professional literature, regulatory documents, ship technical documentation and information collected during practical training. The results show that critical factors include disturbances in diesel generator and shaft generator operating modes, failure of the automatic voltage regulator, power deficit, protection settings, the response speed of the Power Management System (PMS), and crew actions during electrical power restoration. The proposed measures include regular inspection of the AVR, monitoring of the shaft generator bearing condition, testing of protective relays, PMS response, UPS batteries and the emergency generator. It is also recommended to review load disconnection stages, update crew action instructions and carry out periodic blackout prevention training. These measures can reduce the risk of electrical power interruptions, shorten power restoration time and improve the operational safety of the ship.

艩iame baigiamajame darbe analizuojama 啪vejybos tralerio 鈥濪irk Dirk鈥� (IMO: 8209171) pagrindinio kaskadinio 拧aldymo komplekso elektros pavar懦 sistema ir pagrind啪iamas jos modernizavimas diegiant 拧velnaus paleidimo 寞renginius (UPP). Pagrindin臈 tyrimo problema 鈥� didel臈s 160 kW galios kompresori懦 paleidimo srov臈s, kurios sukelia spart懦 elektros varikli懦 apvij懦 u啪kaitim膮, ma啪ina izoliacijos resurs膮 ir destabilizuoja laivo elektros tinkl膮. Darbe atlikta i拧sami energetinio balanso analiz臈 bei apskai膷iuoti trifazio trumpojo jungimo parametrai (15,84 kA), siekiant suderinti nauj膮j膮 paleidimo 寞rang膮 su esama 鈥濵itsubishi Electric鈥� apsaugine aparat奴ra. Modernizacijos sprendimas apima UPP diegim膮 kiekvienam i拧 a拧tuoni懦 kaskados kompresori懦, kas leid啪ia suma啪inti paleidimo srovi懦 拧uolius iki saugaus lygio ir u啪tikrinti integruot膮 varikli懦 拧ilumin臋 apsaug膮. Skai膷iavimais 寞rodyta, kad 寞diegus 拧velnaus paleidimo sistem膮, srov臈s apkrova apvijoms paleidimo metu suma啪臈ja kelis kartus, o parinkti apsaugos nustatymai u啪tikrina visi拧k膮 selektyvum膮: avarinis atjungimas 寞vyksta per 20 ms, neleid啪iant pagrindiniams generatoriams i拧sijungti. Darbo pabaigoje pateiktas techninis ir ekonominis modernizacijos pagrindimas, 寞rodantis ilgalaik寞 varikli懦 eksploatavimo patikimumo padid臈jim膮 ir laivo energetinio saugumo stiprinim膮.

This professional bachelor thesis focuses on the modernization of the electrical drive system for the main cascade refrigeration complex of the fishing vessel 鈥楧irk Dirk鈥� (IMO: 8209171). The study centers on optimizing the starting processes of 160 kW compressors to protect motor windings from thermal overheating and minimize negative impacts on the vessel's power grid. The objective is to justify the implementation of Soft Starters by comparing them with current starting methods, evaluating starting currents, voltage drops, and their effect on generator loading. The results indicate that conventional starting methods cause significant current spikes that accelerate insulation aging and risk triggering a total blackout. Based on calculations (short-circuit current of 15.84 kA), it is proven that Soft Starters limit the inrush current to safe levels, ensure uniform thermal distribution in the windings, and maintain full system selectivity (response time 20 ms). The conclusions provide technical arguments confirming that Soft Starter integration is the most effective measure for extending motor service life and enhancing the energy security of the 鈥楧irk Dirk鈥�.

艩io darbo tikslas 鈥� i拧analizuoti j奴rini懦 skruberi懦 eksploatavimo problemas bendr懦j懦 krovini懦 laivuose ir 拧iuolaikinius j懦 tobulinimo sprendimus, taip pat pademonstruoti 寞gytas teorines ir praktines 啪inias. Tyrimas daugiausia d臈mesio skiria bendr懦j懦 krovini懦 klas臈s laivams, plaukiojantiems visame pasaulyje. Pirmojoje darbo dalyje analizuojami tarptautiniai ir vietiniai reglamentai. Pasauliniams j奴r懦 reglamentams pasislinkus link TJO2020 sieros kiekio apribojim懦, skruberi懦 technologija tapo perspektyviu atitikties mechanizmu laiv懦 operatoriams. Taip pat pateikiamas 寞vairi懦 technologij懦 palyginimas, aptariami eksploatavimo i拧拧奴kiai ir nagrin臈jamas skruberi懦 aplinkosauginis ir ekonominis pagr寞stumas. Antroje dalyje analizuojama, kod臈l bendr懦j懦 krovini懦 laivai ypa膷 tinka skruberi懦 寞rengimui. 艩ie laivai da啪nai naudoja sunk懦j寞 mazut膮, tod臈l skruberiai yra ekonomi拧kai patraukl奴s. Sistemos pasirinkimas priklauso nuo prekybos keli懦. Laivai, daugiausia plaukiojantys u啪 SECA zon懦 rib懦, labiausiai naudojasi atvirojo ciklo sistemomis d臈l ma啪esni懦 eksploatavimo s膮naud懦, o laivai, praleid啪iantys daug laiko SECA zonose, tur臈t懦 naudoti u啪darojo ciklo arba hibridines sistemas, kad u啪tikrint懦 atitikt寞 reglamentams. Tyrime taip pat pabr臈啪ta pa啪angi懦 technologij懦, toki懦 kaip daikt懦 internetu pagr寞stos steb臈jimo ir nusp臈jamosios prie啪i奴ros sistemos, svarba, nes jos gali pagerinti veiklos efektyvum膮 ir suma啪inti degal懦 s膮naudas. Tyrimo rezultatai prisideda prie bendro supratimo, kad j奴riniai skruberiai yra veiksminga pereinamojo laikotarpio technologija, padedanti laiv懦 operatoriams laikytis aplinkosaugos taisykli懦 ir i拧laikyti ekonomin寞 gyvybingum膮. Hibridin臈s ir u啪darojo ciklo sistemos si奴lo subalansuotus sprendimus 拧iandieninei prekybos aplinkai, o nuolatinis technologinis tobulinimas gerina tiek aplinkosaugin寞, tiek veiklos efektyvum膮. Tod臈l skruberiai i拧lieka svarbia j奴r懦 pramon臈s per臈jimo prie dekarbonizacijos ir nulinio grynojo i拧metam懦j懦 ter拧al懦 kiekio iki 2050 m. dalimi.

The objective of this thesis is to analyse the operational problems of marine scrubbers on general cargo vessels and modern solutions for their improvement, as well as to demonstrate the acquired theoretical and practical knowledge. The study focuses on General Cargo-class vessels operating throughout the world's oceans. The first part of the thesis analyses international and local regulations. As global maritime regulations have shifted toward IMO2020 sulphur content restrictions, scrubber technology has become a viable compliance mechanism for ship operators. A comparison of various technologies is also presented, operational challenges are discussed, and the environmental and economic feasibility of scrubbers is considered. The second part analyses how General Cargo vessels are particularly suitable for scrubber installation. These vessels often operate on heavy fuel oil, making scrubbers economically attractive. The choice of system depends on trade routes. Vessels operating primarily outside SECA zones benefit most from open-loop systems due to reduced operating costs, while vessels spending significant time inside SECA zones should use closed-loop or hybrid systems to ensure regulatory compliance. The study also highlighted the importance of advanced technologies, such as IoT-based monitoring and predictive maintenance systems, which can improve operational efficiency and reduce fuel consumption. The results of the study contribute to the overall understanding that marine scrubbers represent an effective transition technology that helps ship operators comply with environmental regulations while maintaining economic viability. Hybrid and closed-loop systems offer balanced solutions for today's trading environment, and continuous technological improvements enhance both environmental and operational performance. Therefore, scrubbers remain an important part of the maritime industry's transition to decarbonization and achieving net-zero emissions by 2050.

laivas

ship

Auk拧t懦j懦 kolegini懦 studij懦 baigiam膮j寞 darb膮 sudaro: 73 puslapiai, 27 paveikslai, 11 lenteli懦, 14 literat奴ros pozicij懦, 17 pried懦. Baigiamojo darbo tikslas 鈥� i拧analizuoti keleivinio 寞va啪iuojamojo kelto 鈥濴una Seaways鈥� energetinio efektyvumo didinimo galimybes, 寞vertinant laive 寞diegtos energetinio efektyvumo didinimo sistemos veikim膮, eksploatacinius rodiklius bei jos 寞tak膮 degal懦 s膮naudoms ir i拧metam懦j懦 ter拧al懦 kiekiui. Tyrimo objektas 鈥� RO-PAX tipo laivas 鈥濴una Seaways鈥� ir jame 寞diegta 鈥濬rese FuelSave鈥� sistema. Pirmoje darbo dalyje nagrin臈jama laiv懦 sukeliama aplinkos tar拧a deginant degalus, aptariami tarptautiniai i拧metam懦j懦 duj懦 reikalavimai bei pateikiamas skirting懦 energetinio efektyvumo didinimo sistem懦 palyginimas. Taip pat analizuojami 拧i懦 sistem懦 eksploatacijos ypatumai, j懦 privalumai ir galimi techniniai ribojimai. Antroje darbo dalyje apra拧omas kelto 鈥濴una Seaways鈥� tipas, reiso mar拧rutas, pagrindiniai energetiniai 寞renginiai, pagalbiniai varikliai, in啪inerin臈s sistemos, 寞gulos sud臈tis ir saugaus darbo reikalavimai. Toliau atliekami degal懦 s膮naud懦, elektros energijos poreikio ir emisij懦 skai膷iavimai, vertinamas 鈥濬rese FuelSave鈥� sistemos poveikis FWD ir AFT au拧inimo kont奴r懦 siurbli懦 darbui. Darbo rezultatai parodo, kad energetinio efektyvumo didinimo sistemos taikymas leid啪ia suma啪inti elektros energijos poreik寞, degal懦 suvartojim膮 ir su tuo susijusias emisijas, tod臈l sistema yra naudinga tiek ekonominiu, tiek aplinkosauginiu po啪i奴riu.

The higher education college studies final thesis consists of 73 pages, 27 figures, 11 tables, 14 references, and 17 appendixes. The aim of this final thesis is to analyse the possibilities for improving the energy efficiency of the RO-PAX ferry 鈥濴una Seaways鈥� by evaluating the operation of the installed fuel saving system, its operational performance, and its influence on fuel consumption and exhaust emissions. The object of the research is the RO-PAX type vessel 鈥濴una Seaways鈥� and the installed 鈥濬rese FuelSave鈥� system. The first part of the thesis analyses environmental pollution caused by ships during fuel combustion, discusses international requirements for exhaust emissions, and presents a comparison of different fuel saving systems. The operational features of these systems, their advantages, and possible technical limitations are also examined. The second part of the thesis describes the type of the ferry 鈥濴una Seaways鈥�, its route, main power plant equipment, auxiliary engines, engineering systems, crew composition, and occupational safety requirements. Further calculations of fuel consumption, electrical energy demand, and emissions are carried out, and the influence of the 鈥濬rese FuelSave鈥� system on the operation of the FWD and AFT cooling circuit pumps is evaluated. The results of the thesis show that the application of a fuel saving system makes it possible to reduce electrical energy demand, fuel consumption, and related emissions. Therefore, the system is beneficial from both economic and environmental perspectives.

Auk拧t懦j懦 kolegini懦 studij懦 baigiam膮j寞 darb膮 sudaro: 63 puslapiai, 20 paveiksl懦, 5 lenteli懦, 19 literat奴ros pozicij懦, 11 pried懦. Baigiamojo darbo tikslas 鈥� remiantis moksliniais straipsniais, technine dokumentacija ir eksploataciniais duomenimis, i拧analizuoti kuro ruo拧imo sistemos veikim膮 bei galimus gedimus laive 鈥濵ADICKEN鈥�, 寞vertinant j懦 atsiradimo prie啪astis, eksploatacinius ypatumus ir poveik寞 pagrindini懦 varikli懦 darbui, 寞vertinant eksploatacinius ir techninius sistemos veikimo aspektus. Pirmoje darbo dalyje analizuojama kuro ruo拧imo sistemos paskirtis, sud臈tis ir veikimo principai, aptariami pagrindiniai elementai 鈥� separatoriai, filtrai, 拧ildytuvai, siurbliai bei j懦 tarpusavio s膮veika. Taip pat nagrin臈jami tarptautiniai reikalavimai, susij臋 su kuro kokybe, emisij懦 ma啪inimu ir saugia eksploatacija. Antroje darbo dalyje atliekama laivo 鈥濵ADICKEN鈥� kuro ruo拧imo sistemos gedim懦 analiz臈: nustatomos da啪niausiai pasitaikan膷ios problemos (pvz., filtr懦 u啪sikim拧imas, separatori懦 efektyvumo suma啪臈jimas, kuro klampos svyravimai, 拧ildymo sistem懦 sutrikimai), vertinamos j懦 prie啪astys bei pasekm臈s varikli懦 darbui ir kuro s膮naudoms. Taip pat nagrin臈jami eksploataciniai duomenys, atliekami skai膷iavimai bei pateikiamos praktin臈s 寞啪valgos. Darbo pabaigoje pateikiamos rekomendacijos kuro ruo拧imo sistemos darbo optimizavimui, gedim懦 prevencijai ir efektyvesniam eksploatavimui. Gauti rezultatai prisideda prie laivo energetin臈s sistemos patikimumo didinimo, kuro s膮naud懦 ma啪inimo bei aplinkosaugini懦 reikalavim懦 寞gyvendinimo.

The final thesis of higher professional studies consists of: 63 pages, 20 figures, 5 tables, 19 references, and 11 appendices. The objective of this thesis is, based on scientific articles, technical documentation, and operational data, to analyze the operation of the fuel preparation system and potential malfunctions on the vessel 鈥淢ADICKEN,鈥� assessing their causes, operational characteristics, and impact on the operation of the main engines, while evaluating the operational and technical aspects of the system鈥檚 performance. The first part of the thesis analyzes the purpose, composition, and operating principles of the fuel preparation system, discussing the main components鈥攕eparators, filters, heaters, pumps鈥攁nd their interaction. International requirements related to fuel quality, emission reduction, and safe operation are also examined. The second part of the thesis analyzes failures in the fuel preparation system of the vessel 鈥淢ADICKEN鈥�: the most common problems are identified (e.g., filter clogging, reduced separator efficiency, fluctuations in fuel viscosity, heating system malfunctions), and their causes and consequences for engine performance and fuel consumption are evaluated. Operational data is also analyzed, calculations are performed, and practical insights are provided. At the end of the study, recommendations are provided for optimizing the operation of the fuel preparation system, preventing failures, and ensuring more efficient operation. The results contribute to increasing the reliability of the ship鈥檚 energy system, reducing fuel consumption, and meeting environmental requirements.

艩iame bakalauro darbe nagrin臈jama kritin臈 j奴r懦 laiv懦 prie啪i奴ros eksploatavimo neefektyvumo problema: priklausomyb臈 nuo planinio, laiku pagr寞sto rankinio varikli懦 veleno linijos atramini懦 guoli懦 tepimo. Sutelkiant d臈mes寞 寞 j奴rin寞 vilkik懦/tiekimo laiv膮 鈥濧TLANTICA CARRIER鈥�, 拧iame darbe analizuojama didel臈 eksploatavimo rizika ir ma啪as patikimumas, susij臋 su esama planin臈s prevencin臈s prie啪i奴ros strategija. Rankinis tepimas gali sukelti perteklin寞 tepim膮, kuris gali pa啪eisti sandariklius, arba perteklin寞 tepim膮, kuris lemia greitesn寞 susid臈v臈jim膮 ir galim膮 laivo sistemos gedimo ta拧k膮. 艩io darbo esm臈 鈥� i拧samus technin臈s modernizacijos in啪inerinis projektas: automatizuotos, b奴kl臈mis pagr寞stos prie啪i奴ros sistemos projektavimas ir 寞diegimas. 艩i sistema naudoja vibracijos jutiklius, sumontuotus tiesiai ant kiekvieno tarpinio atraminio guolio, kad realiuoju laiku steb臈t懦 jo faktin臋 technin臋 b奴kl臋. Si奴lomas in啪inerinis sprendimas integruoja 鈥濰ansford Sensors鈥� vibracijos akselerometrus ir automatinius tepimo 寞renginius 寞 viening膮 valdymo kilp膮. Sistema u啪tikrina tikslin寞 tepim膮 tik tada, kai konkretaus guolio vibracijos para拧as vir拧ija i拧 anksto nustatytas aliarmo ribas, o tai rodo trinties atsiradim膮 d臈l tepimo degradacijos.

This bachelor's thesis addresses a critical operational inefficiency in marine maintenance: the reliance on scheduled, time-based manual lubrication for propulsion shaft line support bearings. Focusing on the Offshore Tug/Supply Ship M/V 'ATLANTICA CARRIER', this work analyses the high operational risks and low reliability associated with the existing Planned Preventive Maintenance strategy. Manual lubrication can result in either over-lubrication, which may damage the seals, or under-lubrication, which leads to accelerated wear and creates a potential failure point in the ships system.The core of this thesis is the complete engineering project for a technical modernization: the design and implementation of an automated, Condition-Based Maintenance system. This system utilizes vibration sensors installed directly on each intermediate support bearing to monitor its actual technical condition in real-time.The proposed engineering solution integrates Hansford Sensors vibration accelerometers and automated lubrication units into a unified control loop. The system provides targeted lubrication only when a specific bearing's vibration signature exceeds predefined alarm thresholds , which indicates the onset of friction due to lubrication degradation.

Kuli拧, D. (2026). Keleivinio laivo 鈥濺egina Seaways鈥� kuro sistemos gedimo analiz臈, profesinio bakalauro baigiamasis darbas. Darbo vadovas lekt. R. Jackuvien臈. Vilniaus Gedimino technikos universiteto Lietuvos j奴reivyst臈s akademija. ANOTACIJA Auk拧t懦j懦 kolegini懦 studij懦 baigiam膮j寞 darb膮 sudaro: 50 puslapis, 18 paveiksl懦, 4 lentel臈s, 18 literat奴ros pozicij懦, 11 pried懦. Praktikoje pastebima, kad kuro sistem懦 gedimai yra vieni da啪niausi懦 laiv懦 j臈gaini懦 veikimo sutrikim懦. Atsi啪velgiant 寞 tai, 拧io darbo tikslas 鈥� i拧analizavus keleivinio鈥搆rovininio laivo 鈥濺egina Seaways鈥� kuro purk拧tuko gedim膮 reiso Klaip臈da鈥揔arlshamnas metu, nustatyti jo atsiradimo prie啪astis bei pateikti prevencines rekomendacijas. Pirmiausiai, siekiant i拧analizuoti kuro purk拧tuko gedim膮 buvo atlikta literat奴ros analiz臈. Pirmoje darbo dalyje, remiantis moksline literat奴ra, konvencijomis ir tarptautin臈s j奴r懦 teis臈s dokumentais, analizuojamos laivuose naudojamos kuro r奴拧ys, j懦 charakteristikos, nagrin臈jamos skirting懦 kur懦 sistem懦 konstrukcijos, veikimo principai bei da啪niausiai pasitaikantys gedimai ir j懦 atsiradimo prie啪astys. Antroje darbo dalyje analizuojama laivo 鈥濺egina Seaways鈥� j臈gain臈, jos eksploatavimas, 寞gulos sud臈tis ir darbo organizavimas, vertinama kuro sistemos gedim懦 寞taka variklio darbiniams parametrams bei eksploatacijai. Taip pat detaliai nagrin臈jamas kuro purk拧tuko gedimas, nustatomos galimos jo atsiradimo prie啪astys bei aptariami remonto ypatumai. Darbo rezultatai parod臈, kad pagrindin臈s gedimo prie啪astys susijusios su kuro kokybe, sistemos komponent懦 nusid臈v臈jimu ir nepakankama prie啪i奴ra. Pateikiamos rekomendacijos prisideda prie kuro sistemos patikimumo didinimo, efektyvesn臈s laivo eksploatacijos ir neigiamo poveikio aplinkai ma啪inimo.

Kuli拧, D. (2026). Analysis of the fuel system failure of the Ro-Pax ship 鈥淩egina Seaways鈥�, professional bachelor thesis. Thesis supervisor lect. R. Jackuvien臈. 黑料不打烊_独家黑料_吃瓜网51爆料 Lithuanian Maritime Academy. ABSTRACT The final thesis of higher professional studies consists of 50 pages, 18 figures, 4 tables, 18 references and 11 appendices. Fuel system failures are among the most frequently occurring malfunctions in marine propulsion systems. Accordingly, the aim of this study is to analyze the fuel injector failure of the Ro鈥揚ax vessel 鈥濺egina Seaways鈥� during the Klaipeda鈥揔arlshamn voyage, to identify its causes, and to propose preventive recommendations. A literature review was conducted to provide the theoretical background. The first part of the study, based on scientific literature, international conventions, and maritime law documents, examines marine fuel types and their characteristics, as well as different fuel system designs, operating principles, and common failures with their underlying causes. The second part focuses on the propulsion system of the vessel 鈥濺egina Seaways鈥�, including its operation, crew structure, and organizational aspects. The influence of fuel system failures on engine operating parameters and vessel performance is assessed. The fuel injector failure is analyzed in detail, potential causes are identified, and repair procedures are discussed. The results indicate that the primary causes of the failure are related to fuel quality, component wear, and insufficient maintenance practices. The findings suggest that implementing the proposed recommendations can improve fuel system reliability, enhance operational efficiency, and reduce environmental impact.

Auk拧t懦j懦 kolegini懦 studij懦 baigiam膮j寞 darb膮 sudaro tituliniai lapai lietuvi懦 ir angl懦 kalbomis, anotacija, studij懦 rezultat懦 s膮ra拧as, santrumpos, turinys, 寞vadas, dvi pagrindin臈s dalys, i拧vados, literat奴ros s膮ra拧as ir priedai. Baigiamojo darbo tikslas - i拧analizuoti kavitacijos ir erozijos sukeltus pagrindinio variklio sistem懦 gedimus, nustatyti j懦 susidarymo prie啪astis, 寞vertinti poveik寞 pagrindinio variklio patikimumui bei pateikti 拧i懦 gedim懦 拧alinimo ir prevencijos priemones. Tyrimo objektas - naftos ir chemijos produkt懦 tanklaivio pagrindinio variklio sistemos bei j懦 elementai, kuriuose eksploatacijos metu pasirei拧kia kavitaciniai ir eroziniai pa啪eidimai. Pirmoje darbo dalyje nagrin臈jami kavitacijos ir erozijos fizikiniai mechanizmai, 拧i懦 rei拧kini懦 tarpusavio s膮sajos su korozija, diagnostikos po啪ymiai ir pagrindin臈s laivo variklio sistemos, kuriose tokie pa啪eidimai susidaro da啪niausiai. Antroje darbo dalyje analizuojama laivo j臈gain臈s eksploatacija, apra拧omos pagrindin臈s in啪inerin臈s sistemos, atliekama tipini懦 gedim懦 prie啪as膷i懦 analiz臈, remonto technologij懦 vertinimas ir prevencini懦 priemoni懦 pagrindimas. Darbo rezultatai gali b奴ti taikomi vertinant laivo pagrindinio variklio sistem懦 technin臋 b奴kl臋, planuojant technin臋 prie啪i奴r膮 ir ma啪inant eksploatacini懦 gedim懦 tikimyb臋.

The final thesis consists of Lithuanian and English title pages, an annotation, a list of learning outcomes, abbreviations, a table of contents, an introduction, two main parts, conclusions, references and appendices. The aim of the thesis is to analyse main engine system failures caused by cavitation and erosion, determine their causes, evaluate their influence on operational reliability and provide corrective as well as preventive measures. The research object is the main engine systems of an oil and chemical tanker and the components most frequently affected by cavitation and erosion during operation. The first part of the thesis examines the physical mechanisms of cavitation and erosion, their interaction with corrosion, diagnostic indicators and the main ship systems where such damage occurs most often. The second part analyses engine room operation, describes the main engineering systems, evaluates typical failure causes, repair technologies and preventive measures. The results of the thesis can be applied when assessing the technical condition of main engine systems, planning maintenance and reducing the probability of operational failures.