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Brodski visokonaponski sinkroni generator AMG 1600LH14 LSE
No full textOvaj rad obrađuje brodski visokonaponski generator AMG 1600LH14 LSE nazivnog napona 6600 V, frekvencije 60 Hz i nazivne struje 1069 A pri brzini vrtnje od 514 okretaja u minuti. Ovaj tip generatora je interesantan jer se ugrađuje u sve vrste brodova s visokonaponskim elektroenergetskim sustavom. Rad sadrži detaljne upute za provjeru mehaničke instalacije, električnih instalacija, otpora izolacije, automatskog regulatora napona, postupak pokretanja, isključivanje, puštanje u pogon, električne zaštite, ispitivanje, montažu, centriranje, nadzor i preventivno održavanje. Objašnjen je značaj preventivnog održavanja i svih razina korektivnog održavanja. Dane su upute za dijagnosticiranje i rješavanje svih mogućih problema u radu generatora.This thesis deals with the 6600 V, 60 Hz, 1069, 514 rpm ship's high-voltage generator AMG 1600LH14 LSE. This particular generator is interesting because it can be installed in all types of ships with a high-voltage power system. The thesis contains detailed instructions for checking mechanical installations, electrical installations, insulation resistance, automatic voltage regulator, start-up procedure, shutdown, commissioning, electrical protection, testing, assembly, centering, supervision and preventive maintenance. The importance of preventive maintenance and all levels of corrective maintenance is explained. Instructions are given for diagnoses and resolving all possible malfunctions in operation
Oil contamination in marine hydraulic systems
No full textU ovom radu govori se o negativnom utjecaju nečistoća na brodske hidrauličke sustave i
kako ih spriječiti. Na početku rada govori se o mogućim izvorima onečišćenja i načinima na
koje nečistoće mogu ući u sustav. Nakon toga opisane su posljedice onečišćenja u raznim
dijelovima hidrauličkog sustava zbog kojih vrijedi proučavati onečišćenje. Zatim se govori o
postupcima i uređajima koji se koriste da bi se razina onečišćenja u sustavu mogla učinkovito
kontrolirati. Opisuju se načini na koje se mjeri razina onečišćenja u sustavu, kako se ti podaci
obrađuju i koriste za određivanje najučinkovitijih mjera za kontrolu onečišćenja, zašto je
važno odrediti željenu razinu čistoće sustava i kako se postiže i održava. U završnim
cjelinama rada govori se o proizvodima za filtraciju i njihovoj klasifikaciji po raznim
karakteristikama i konstrukciji.This paper deals with the negative effects and prevention of oil contamination in
marine hydraulic systems. At the beginning of the paper the possible sources of contamination
and ways the contaminants can enter the system are described. After that, the consequences of
contamination on various parts of the hydraulic system, which are the reason why
contamination is being studied, are explained. Next, it is described how the contamination
level within the system is measured, how that data is processed and used to determine the
most efficient measures to control contamination and why it's important to determine, achieve
and maintain target cleanliness. In the final chapters of the paper, filtration products and their
classification according to certain characteristics and construction is explained
Human factor and prevention of accidents at sea
No full textKroz rad je obrađena tematika vezana uz pomorske nesreće koje su uzrokovane ljudskim čimbenikom. Rad o ljudskom faktoru podiže svijest o ljudskim elementima u pomorskoj sigurnosti i potiče daljnju primjenu suzbijanja ljudskih faktora u agendi nadzora, čime se osigurava sigurnosni status brodova na moru. Kroz rad je naglašena problematika ljudskih čimbenika te je ona u današnjem suvremenom pomorstvu postala česta tema. Ljudske pogreške često se ponavljaju, čiji uzrok može biti različit i stalan, a nitko ne može osigurati da se iste pogreške nikada ne dogode više od jednom. Budući da ljudske pogreške mogu utjecati na pogreške u sustavu, potrebno je djelovati na prevenciji nastanka pogrešaka i na taj način na prevladavanje mogućih posljedica kako bi se sustav vratio u normalno stanje.The paper deals with the topic related to maritime accidents caused by human factors. The work on human factors raises awareness of human elements in maritime safety and encourages the further application of human factors suppression in the surveillance agenda, thereby ensuring the safety status of ships at sea. Throughout the work, the problem of human factors is emphasized, and it has become a frequent topic in today's modern maritime industry. Human errors are often repeated, the cause of which can be different and constant, and no one can ensure that the same mistakes never happen more than once. Since human errors can affect errors in the system, it is necessary to act on the prevention of the occurrence of errors and thus to overcome possible consequences in order to return the system to a normal state
Equipment for measuring and registration of radiation from biological materials
No full textOvaj završni rad se bavi obradom tematike mjerenja i registracije raznih oblika zračenja, odnosno uređaja kojima se izvodi samo mjerenje i registracija. Uvodni dio se odnosi upoznavanje te razumjevanje pojma zračenja i osnovne problematike koja se veže uz sam pojam zračenja. Kroz sljedeća poglavlja se detaljnije upoznaju pojmovi kao što su ionizirajuća radijacija, radioaktivnost i radioaktivno raspadanje, te elektromagnetsko zračenje i biološki utjecaj zračenja. Nadalje se obrađuju načini detektiranja zračenje te instrumentizacija potrebna za to. Objašnjavanjem principa rada osnovnih uređaja, poput Geiger – Müllerovog brojača, se teoretski dublje upoznaje sam pojam zračenja. Kasnije upoznavanje s raznim vrstama detektora, brojača i dozimetara omogućuje šire razumijevanje problematike vezane uz detekciju i registraciju zračenja, te važnost iste.This paper focuses on the topic of measurement and registration regarding various forms of radiation, i.e. devices that are used for measureing and registration of radiation. The introductory part is focused on understanding the base concept of radiation and the terms closely related to the idea of radiation. Through the following chapters, concepts such as ionizing radiation, radioactivity and radioactive decay, as well as electromagnetic radiation and the biological effects of radiation are introduced in more detail. Futhermore, we are disscusing the methods of detecting radiation and the instrumentation for the task required. Explaining the principle of operation of basic devices, such as the Geiger-Müller counter, the concept of radiation itself is better understood. Introduction to various types of detectors and dosimeters and their basic priciples of operations, results in comprehensive understanding on the topic related to detection and registration of radiation, and its importance
Underwater laser cutting
No full textPodizanjem standarda kvalitete infrastrukture zahvaćene su mnogobrojne industrije.
Pomorska, naftna te industrija koja se bavi nuklearnom energijom jedne su od mnogih.
Stanje i održavanje pomorskih objekata i prijevoznih sredstava ključno je za daljnji
razvoj industrije. U svrhu ispunjenja industrijskih, ekoloških i ekonomskih zahtjeva,
brojne tehnike su razvijene kako bi se postigao najučinkovitiji oblik održavanja. U
ovome radu cilj je analizirati tehnike podvodnog laserskog rezanja kao jedne od tehnika
koja je posljednjih godina doživjela veliki razvoj. U radu se prikazuju dijelovi lasera,
procesi rezanja te rezultati koji prikazuju potencijalnu učinkovitost i primjenu u
održavanju.Many industries have been affected with the rising standards of the infrastructure quality.
Maritime, oil and nuclear industries being one of many. Maintenance as well as the state
of maritime objects and vehicles are key for further development of the industries.
Numerous techniques are being developed for the purpose of maximizing the efficiency
of maintenance. The goal in this paper is to analyze techniques of underwater laser cutting
as a technique that has experienced great development. Parts of the laser, cutting
processes and results that show potential efficiency and implementation in maintenace,
are presented in this paper
Application of wireless communication networks in maritime
No full textU posljednjih se dvadeset godina naglo razvija bežično elektroničko komuniciranje mobilnih korisnika, a posebno nakon uvođenja satelitskih veza . Mobilne bežične telekomunikacije postaju temelj u suvremenoj pomorskoj djelatnosti čime se skromno utvrđuje i daljinsko upravljanje brodom. Pomorske komunikacije se znatno unaprijeđuju uvođenjem najnovijih tehnologija poput interneta, satelita i dr. Dvojnost razvoja kako terestričkih tako i satelitskih radioveza donosi nove mogućnosti, ali i alternative.
Unatoč prednostima ovih novih tehnologija koje pridonose znatno većem stupnju automatizacije sigurno je da ljudski faktor i dalje ostaje presudan. Bežične mreže mogu osigurati mrežni pristup telefonima, računalima, aplikacijama, bazama podataka u krajnjem Internetu i to na brodovima koji su na udaljenim lokacijama pružajući pri tome korisnicima mogućnost da pribavljaju, kopiraju i upravljaju podacima virtualno s bilo koje lokacije. Uz kvalitetno rukovanje operatora sigurnosti plovidbe trebala bi znatno porasti, a kvalitetna razmjena će razmijeniti informacija će unaprijediti pomorsko gospodarsko u cjelini.
U prvom dijelu autor opisuje osnovne pomorske telekomunikacije i kako one utječu na sigurnost plovidbe i članove brodske plovidbe tijekom pojedinog pomorskog pothvata. Drugi dio završnog rada opisuje moguću širu primjenu u pomorstvu te razmatranje mogućih inovacija.In the last twenty years, wireless electronic communication of mobile users has developed rapidly, especially after the introduction of satellite connections. Mobile wireless telecommunication is becoming the basis of modern maritime activity, which modestly determines the remote control of the ship. Maritime communications are significantly improved by the introduction of the latest technologies such as the Internet, satellites, etc. The duality of the development of both terrestrial and satellite radio links brings new possibilities, but also alternatives.
Despite the advantages of these new technologies, which contribute to a significantly higher degree of automation, it is certain that the human factor still remains crucial. Wireless networks can provide network access to phones, computers, applications, databases in the final Internet and on ships that are in remote locations, giving users the opportunity to acquire, copy and manage data virtually from any location. With the quality handling of operators, navigation safety should increase significantly, and a quality exchange of information will improve the maritime economy as a whole.
In the first part, the author describes basic maritime telecommunications and how they affect the safety of navigation and members of the ship's navigation during a particular maritime venture. The second part of the final paper describes the possible wider application in the maritime sector and the consideration of possible innovations
Acute conditions and diseases and the activity of emergency medicine in the ship's enviroment
No full textTema ovoga rada su akutna stanja i bolesti koje se najčešće javljaju u brodskom okruženju. Budući da ih simbolizira relativno brzi nastanak, potrebna je pravovremena reakcija ovlaštenoga člana posade kako bi se posljedice smanjile ili u potpunosti spriječile. U radu je detaljno objašnjen niz akutnih stanja i njihova manifestacija na čovjekov organizam, a detaljnije su obrađena u trećem poglavlju. Također, istaknuta je odgovornost kompanije na uzastopnom praćenju i provjeravanju znanja članova posade kao i sustavnom provođenju istih. S obzirom da se lijekovi vrlo često mijenjaju, u šestom poglavlju detaljno su opisani medikamenti te njihovo doziranje i primjena uz moguće kontraindikacije na pacijenta.The main topics of this labour are acute conditions and diseases that are most likely to appear on board the ship. As they are symbolized by rapid emergence, quick reaction by authorized crew member is needed in order to reduce repercussions or to prevent them completely. Series of acute diseases and their manifestation on human organism are explained in the third chapter. Company’s responsibility of the consecutive monitoring and checking knowledge is also explained as well as their systematic implementation. As medications are often changed, sixth chapter of this labour explains all details about medications, how to apply medications, right dosage and potential contraindications that may appear to the patient
Ecology and green logistics
No full textTema ovoga završnog rada je zelena logistika i ekologija. U radu će biti prikazani i objašnjeni opći logistički pojmovi, pojam održivoga razvoja, ekologije i „zelene“ logistike. Navesti će se ciljevi „zelene“ logistike te kako ih jedna tvrtka može ostvariti. Objasniti će se povezanost logistike i ekologije te zašto je bitna. Usporediti će se povratna logistika sa „zelenom logistikom“ te njihova međusobna povezanost sa pojmom upravljanja otpadom. Rad nastoji ukazati na važnost konstantnog uvođenja novih komponenti „zelene“ logistike koji će pomoći sve više umanjiti negativne učinke na okoliš odnosno velike stope zagađenja.The theme of this paper is „green“ logistics and ecology. The terms of logistics, sustainable development, ecology and „green logistics“ will be presented and explained in this paper. The goals of „green“ logistics will be presented and also way of how a company can achieve them. The important connection between logistics and ecology will be shown and explained. „Green“ logistics and reverse logistics will be put in a comparison and their connection with waste management will also be explained. The final work is going to show the importance of constant application of new components to „green“ logistics which will help reduce the environmental damage caused by the high rates of pollution
The importance of the port of Rijeka within the Pan-European corridor V
No full textIn this paper, the role of seaports in the transport system was explained, as the hubs which connect various transport modes (road rail, sea) for both cargo and passengers. The Pan-European Corridor V was analyzed, as a part of the Pan European Transport Network, consisting of seaports, roads and railroads, established in order to facilitate the European and Pan European traffic. The statistical data for port of Rijeka, the largest Croatian cargo seaport was compiled, emphasizing the importance within the Croatian seaport system, and within the Pan-European Corridor V. The Port of Rijeka was compared with the Ports of Venice, Trieste and Koper, which also lie at the Pan-European Corridor V. Finally, the analysis of the Corridor V branches B (Port of Rijeka) and C (Port of Ploče) was conducted
Crude oil washing and inert gas system with review Almi Hercules
No full textPranje tankova sirovom naftom je radnja koja se obavlja pri završetku iskrcaja tereta. Primjenjuje se na brodovima za prijevoz sirove nafte. Tlak prilikom pranja mora biti između 10-12 bara, te viskozitet tereta mora biti povoljan za pranje kako bi pranje bilo efikasno. Inertiranje i pranje tankova su povezani procesi koji se obavljaju paralelno zbog opasnosti od eksplozije. Inertiranje se započinje prilikom iskrcaja tereta, a dobiva se iz kotlova gorenja. Cilj inerta je da se kisik suzbije na minimalne vrijednosti koja prema SOLAS konvenciji iznosi unutar 5% dok je u praksi između 2-3% kisika. Sustav inertnog plina je povezan sa uređajima kao što su: palubna brtva, tlačni/vakumski ventil, tlačni/vakumski prekidač, glavni odušni stup. Rad je pisan sa osvrtom na brod Almi Hercules.Crude oil washing is an action that is performed at the end of cargo unloading. It is used on ships for the transportation of crude oil. The pressure during washing must be between 10-12 bars, and the viscosity of the cargo must be favorable for washing in order for it to be effective. Inerting and tank washing are related processes that take place in parallel due to the risk of explosion. Inerting is started when the cargo begins to unload, and it is obtained from the combustion boilers. The goal of inerting is to suppress oxygen to minimum values, which according to the SOLAS convention are within 5%, while in practice it is between 2-3% oxygen. The inert gas system is connected to devices such as: deck seal, pressure/vacuum valve, pressure/vacuum breaker and mast riser. The paper was written with reference to the ship Alma Hercules