Below is an IED unit 1 engineering quiz that is perfect for trying to see just how much one has been attentive in class. To get certified, candidates have to successfully pass required exams and evaluation. The crack progress is shown as smooth, rippled formation known as striations or beach marks, whilst the sudden failure is a classic brittle fracture with rough appearance. One of the common areas of overheating is the various bearings within the crankcase. This grip is subjected to the full torque of the engine output, and  hence subjected to high torsional stresses. What is the Marine Engineer 4 th class exam procedure like, and do you have any example questions? Questions and Answers on Diesel Engines 1, Preparation for Arrival in Port Checklist, Fuel Injection Arrangement on Large Two Stroke Engines, Maintenance of Chain Drive – Marine Diesel Engines, Operation of Freshwater Generator with Jacket Cooling Water, Starting Air Line Explosion on Ships – Marine Engineering, International Shore Connection for Fire Fighting, Torsional Vibration in Main Propulsion Plant of a Ship, MEO Orals on Marine Electro Technology Function 5- Part 8, Describe how a fatigue crack may be initiated, Describe the events leading to a crankcase explosion on a main engine, Explain how a fatigue failure is identified, How a detuner or torsional vibration damper can reduce the effects of torsional vibration, how the risk of water hammer may be avoided, problems associated with effective lubrication of the liner and piston assembly, State how overheating might be indicated other than by mist detector, State how the severity of a crankcase explosion is limited, wear down in main bearings is critical to the condition of the crankshaft, What are the causes and effects of torsional vibrations in crankshaft, What is meant by the term critical speed and why it can be a problem on ships, Why oil holes are given large fillets in crankpins and journals, why the testing and treatment of boiler water is essential, Why total reliance is placed on frictional grip in conventional built up crankshaft on main engine, Measuring Fuel pump Lead on Marine Auxiliary Engine, Operation and Maintenance of Eductor on Ships, Insulation Resistance Tests of High Voltage Equipment, The level of chlorides is within acceptable limits (below 200 ppm) to prevent hard scale and pitting, The reserve of boiler chemicals within the boiler water is accepted (P Alk above 100 ppm, and Phosphate above 20ppm), Alkalinity reserve against boiler water space corrosion, Enough coagulant levels exist to minimise sludge build-up within the boiler, The strength of the boiler drum is maintained, Reducing the steam load and demand on the auxiliary boiler to reduce firing temperatures, Ensuring hotwell feed temperatures are at the recommended 95°C to minimise oxygen levels in the feed, Minimise blowdown of boiler water, whilst ensuring chloride level is not excessive, to avoid loss of the boiler chemicals, High combustion pressures, increasing the bending stress applied to each crankshaft throw. I sail with one of the leading shipping companies as engine officer. a chief engineer of a fifth class plant; or; a shift engineer of a fourth class plant. If the crankshaft alignment is completely straight then the bending stresses are minimal, but should uneven main bearing wear down occur, then these bending stresses will greatly increase. For large propulsion engines the Bridge Control is achieved by using the telegraph to select the desired speed and direction. 1. The valves from the air receiver would be checked, and opened if found shut. The shut down panel would be examined, and if a trip is active the cause would be investigated and system made operational. Writing is my hobby, and loves to write about what i like. Marine Engineer Class 2 Exam Questions Author: programafaixalivre.org.br-2021-01-11T00:00:00+00:01 Subject: Marine Engineer Class 2 Exam Questions Keywords: Marine, Engineer, Class, 2, Exam, Questions Created Date: 1/11/2021 3:16:03 PM Collapse. Question and Answer for Oral Exam, Part – 1 November 16, 2014; Marine Engineer Officer Class- 1 (Unlimited) CoC Oral Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014; Marine Engineer Officer Class-2 & 1 (Unlimited) CoC Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014 Sample Question. The atmosphere inside a crankcase is stable and will not allow combustion or an explosion to occur as there is no ignition or fuel source. The doors also perform the added function of preventing fresh air ingress into the crankcase where hot burning gases are present, by the quick closing action of the relief door. The evaporated oil then rises within the crankcase, and then condenses in a cooler part of the crankcase. Low fuel pressure at the engine manifold. Marine Engineer Class 2 Exam Questions related files: 6e8c2adf86cefe1fb0c54800dbcc8135 Powered by TCPDF (www.tcpdf.org) 1 / 1 Very very good feed back I am receiving for both my EK M, written and Oral examinations of MMD. Our book servers hosts in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Fatigue failure is identified as starting at a stress raiser or defect, then the crack generates through the material before causing sudden failure. The oil hole will inherently increase the local stress levels, and thus to minimise these increases, the oil hole will have a significant radius at the surface. The causes are insufficient oil and/or excessive cylinder pressures causes heavy ring/liner contact forces. Once the air start is reversed, the engine will start as detailed for the ahead start. Would love to talk to different people out there. When the crankshaft is subjected to these high stresses, the small defects present within the shaft could develop and propagate into cracks that could lead to shaft failure. Uniforms for India. Before you spend time doing sea service and training, we recommend you check that you can meet the medical fitness and eyesight standards (including for colour vision), and that you understand the fit and proper person requirements. Explain the term water hammer indicating possible effects on the system ? Locate the “hot spot” (source of the oil overheating), The oil is injected at defined points which can lead to an oversupply at the feed points, and an under supply away from these points, The residual fuel normally used contains acids and abrasives that will reduce the lubrication properties of the oil, The normal operation of the piston will cause the piston movement to stop at top dead centre, causing any oil pressure developed between the ring and liner to collapse, The high temperatures present at top dead centre reduce the effectiveness of the lubricant. Experience 1969 - 2020 in the marine industry Marine Engineers and Superintendents Technical Support Previous template Next. Marine Uniforms. The following brochures contain oral questions. are reversed. A Guide to Welding Electrodes on Ships - Part 1. The engine would again be tested in the astern direction to test if a starting air valve has failed to open. Questions and Answers for Marine Engineers help to pass exam. This pressure rise is limited by the statutory use of relief doors fitted to the crankcase. Low air pressure at engine manifold. X. Tagged Engine Troubleshooting, Marine Engineering Practice. How to Identify Metals in Engine Room? Diesel Engines 1 Diesel Engines 2 Diesel Engines 3 Diesel Engines 4 Diesel Engines 5 Diesel Engines 6 Diesel Engines 7 Diesel Engines 8 Diesel Engines 9 Diesel Engines 10 Diesel Engines 11 Diesel Engines 12 Diesel Engines 13 Diesel Engines 14 Diesel Engines 15 Diesel Engines 16 Diesel Engines … Read More → Once the engine is turning above the starting speed, the air is closed and fuel is admitted. The detuner will change the stiffness of the shaft and hence the natural frequency, thus separating the excitation frequency from the component’s natural frequency, whereas the damper will absorb the vibration within the shaft, reducing the effects of the torsional vibration. The size of this radius will significantly influence the local stress levels, and should be closely monitored during crankshaft construction, and possible crankpin surface repairs by grinding. These doors will open when the pressure rises above 0.02 – 0.1 bar, and prevent the over-pressure of the engine structure. All Time Today Last Week Last Month. Fatigue strength is reduced when tensile stress are present, so the radii areas are often cold rolled to ensure that the fatigue strength in these areas are increased. Following this the trip reset button would be pressed. Love Dogs a lot. ASM / Masters; UK MCA – Engineering. Shirts & Trousers; Marine Merchant Navy Epaulettes. Questions and Answers on Diesel Engines Click on the links below to download the file. Required fields are marked *. The resultant white mist is within the explosive range, and is thus flammable. Engineering Exams. The critical speed of a shaft occurs when the shaft rotational speed is at or close to resonant conditions. Questions: 20 | Attempts: 330 | Last updated: Aug 6, 2019 . Lukeas2016. Question and Answer for Oral Exam, Part – 1 November 16, 2014; Marine Engineer Officer Class- 1 (Unlimited) CoC Oral Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014; Marine Engineer Officer Class-2 & 1 (Unlimited) CoC Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014 Book an exam. Water hammer occurs when steam is admitted into a cold pipeline. Chief Engineer officers on ships powered by main propulsion machinery of 3,000 kW propulsion power or more must: 1. Shirts & Trousers; Marine Merchant Navy Epaulettes. In modern marine 2-stroke diesel engines, _____ is sometimes used as a coating on the underside of the exhaust valve disc, to reduce the rate of hot corrosion. A Guide to Welding Electrodes on Ships - Part 2. You could not unaided going following ebook accretion or library or borrowing from your connections to open them. The gear would be removed if found engaged. Extra First Class Part B Question Papers: Extra First Class Part A Question Papers: MEO CL-I WRITTEN EXAM QUESTIONS: MEO Oral Questions Part1: MEO Mgmt. The physical movement of the fuel linkage would be checked, and any mechanical friction reduced by lubrication. If there are any defects at this joint, then the resulting stress concentration would trigger a crack and possible shaft failure. This impact force can be high enough to rupture the pipeline. The fuel linkage should admit a “starting level” of fuel after the engine start sequence has been completed. Education & Training:have complete… Sticking fuel linkage. As the explosion is an uncontrolled event, then great care must be taken to ensure the safety of the engineers within the engine room. These are marine engineering questions and answers which may look simply but might be difficult to the young professionals. If the engine fails to start on air the following points would be investigated, and remedial action taken. ENGINEERING KNOWLEDGE GENERAL (EKG) EKG 1 EKG 2 EKG 3 EKG 4 EKG 5 EKG 6 EKG 7 EKG 8 EKG 9 EKG 10 EKG 11 EKG 12 EKG 13 EKG 14 EKG 15 EKG 16 EKG 17 ENGINEERING KNOWLEDGE STEAM (EKS) EKS 1 EKS 2 EKS 3 EKS 4 EKS 5 EKS 6 ELECTRICAL TECHNOLOGY (ET) ET 1 … complete and pass the approved qualification for Marine Engineer Class 1; have the required ancillary certificates ; pass Maritime NZ’s final exam; prove that you are a fit and proper person; be medically fit and have good eyesight; choose to specialise in steam-powered or motor-powered propulsion systems, or both. The steam condenses producing both water, and a vacuum (when the water seals the pipeline from the steam supply). Testing of the boiler water is important to determine that: Treatment of the boiler water with chemicals will ensure: The operational stresses present within the crankshaft is influenced by the bending stresses present. this post will help to build up a basic understanding and to become familiar to such question . These can be reduced by ensuring a smooth surface finish to all area where high stress is applied especially in the web/pin radii area, These should be minimised whenever possible, and the oil hole opening have wide and smooth radii. marine-engineer-class-2-exam-questions 1/5 PDF Drive - Search and download PDF files for free. Do give it a shot and see if you have what it takes to tackle the upcoming engineering exam finals. This will be an additional advertisement for you as an engineer. This wear down will increase the bending stress on the propeller shaft, and the external moment at the engine / shaft interface, increasing the crankshaft stresses. Hence the first event is the production of an explosive mixture. The stress can be increased locally by a surface defect, or even an extreme stress concentration caused by high applied stress. Marine Engineer Class 1 – Guidance for certificate of competency Page 2 of 16 . Air start distributor not reversing. If the engine fails to reverse the following points would be investigated, and remedial action taken. Page of 1. Requirements. When the bridge telegraph is moved to  an ahead command, the air start and fuel cams are placed in the required direction, and the start command is given. Search. Syllabus. slow ahead, full ahead, etc. Loves to brag about the places that i have been too. Target Consumer. Defect growth from a small surface defect into a crack that propagates through the shaft material require high levels of stress. In this condition the torsional vibration of the shaft increases greatly, and will impose very high shear stress on the crankshaft. All Discussions only Photos only Videos only Links only Polls only Events only. No air pressure at engine manifold. Hold a Marine engine driver grade 1 near coastal, Engineer watchkeeper or workshop skill equivalent qualification. READ MEO Class 4B Exam Questions and Answer of MEP. Time. Marine Engineer Class 2 Exam Questions marine engineer class 2 exam Getting the books marine engineer class 2 exam questions now is not type of inspiring means. 2. Fatigue cracking occurs when the primary cause of crack propagation is due to the fluctuating nature of the stress applied to the component. Ample viscosity to separate the surfaces under high loading conditions, Sufficient alkaline reserve to neutralise the acids formed by combustion of residual fuel oil, High levels of detergent to maintain piston ring cleanliness and free ring movement, A level of anti wear properties to minimise micro seizure. ASM / Masters; UK MCA – Engineering. The fuel system would be investigated, and all valves checked to be opened, and all booster and supply pumps checked for running. They seems simple. However in the real situation the following problems occur: Cloverleafing will be caused when the supply of lube oil is not uniform around the radial bore of the liner. If you want, you can send answers to any questions. The action of the fuel linkage would be checked during the start sequence. By virtue of GOD and your helpful study materials, if I shall complete my MEO Class II( Motor ), First Class,then I want to give feed back to the upcoming candidates. The appearance is heavy scratching/tearing in the vertical direction, together with a localised hardening of the ring and liner material. Any valve found faulty would be removed, freed and refitted. A person using the services of a professional person or organization. Harsha Sharma . Please see top of page for information on new Transport Canada procedures, in place, on a temporary basis, until new Marine Personel Regulations (MPR2019) come into force, expected, summer 2019. When the bridge telegraph is placed in Stop, the fuel is prevented from injecting as the fuel pump puncture valves are energised. Academic Papers; Uniforms. new posts. These levels of stress could even cause crankshaft failure. Class IV Level ; New Management Level. State how overheating might be indicated other than by mist detector ? This could indicate that the air compressors are either not working or excess air is being used. Water hammer occurs when steam is admitted into a cold pipeline. The steam condenses producing both water, and a vacuum (when the water seals the pipeline from the steam supply). The quantity of fuel admitted will depend on the position of the telegraph handle, i.e. This will admit starting air to the engine. When the oil mist is ignited, a crankcase explosion will occur, which will raise the pressure within the crankcase. Certification process. marine engineer class 2 exam questions is available in our book collection an online access to it is set as public so you can download it instantly. The initiation site will be where the local stress is high enough to increase the minute cracks which occur on the metal surface. It is possible that the air distributor does reverse as expected, but that the required air start valve would not open to rotate the engine in the new direction. Marine Engineering interview questions :- 1.What is motor bike c.c. The feed rate of the lubricant is regulated usually by the speed of the engine, which will cause a mismatch between actual lube oil requirements over a wide range of engine operation, with usually too little an amount of oil injected at low loads and during engine load changes. A. monel Air start valve not opening. We use cookies to ensure that we give you the best experience on our website. ? Director General of Shipping, Govt of India. Such levels of stress are possible when the stress is concentrated at section changes. The rapid pressure rise within the crankcase can cause the engine structure to be blown apart, causing physical damage, and the resultant flame travelling across the engine room space causing personnel injury. MEO Class 1; MEO Class 2; MEO Class 4; MMD – Nautical. The engine controls would be moved ahead and astern whilst observing the movement of the air start distributor. Your email address will not be published. Marine Boilers Class 2 CoC Uk Oral Exam Questions. Show. When the main bearings wear down, the alignment of the crankshaft to the propeller shaft will change. We will put them in a brochure with a link to you. Continued use of this site indicates that you accept this policy. The second event is the ignition of this white mist by either the same or another hot spot within the crankcase. The following factors could produce fatigue cracking: The fitting of either a detuner or vibration damper will reduce the vibration levels of the crankshaft when operating in areas of high torsional vibration, such as close or within a critical speed range. All air compressors would be started, and air usage restricted to engine manoeuvring only. Hence bearing temperature monitors could be used to indicate that a bearing is overheating and could be oil mist generation site. This vacuum causes the water plug to be drawn into the closed end of the pipe with increasing velocity producing high impact forces on the pipework. Thanks with best regards to you. This will cause uneven bore wear rates, with heavy wear in the areas furthest away from the oil injection points. Fatigue cracks can grow faster when the material is harder, as the dislocations in the metal concentrate the stress on a smaller area of the material structure, hence any hardening of the crank pins must not be applied to the highly stressed radii areas. If the distributor is not moving, then the air servo cylinder would be checked to ensure that it is free to move, and that air is being admitted and vented as required to achieve the movement required. Thanks lot to you, I am highly Grateful for your feed back. MAN B&W recommend that: The effective lubrication of the cylinder liner and piston assembly requires a constant lubricant feed over the whole liner surface, and that piston movement will generate the oil pressures required to separate the surfaces. Below are marine engineering questions and answers which you may likely come across someday. Filter. Application for evaluation can be made at any stage of certification, provided all the prerequisites have been met. Class IV Level ; New Management Level. Marine Uniforms. MEO Class 1; MEO Class 2; MEO Class 4; MMD – Nautical. Frictional grip is the usual method of crankshaft construction for built-up crankshaft. Filtered by: Clear All. Water hammer is avoided by slowly admitting the steam into the cold line, and draining/venting the cold line to minimise the vacuum forming, and assist in draining the condensate. When the bridge telegraph is moved to an astern direction, the air start and fuel cams Collapse. This will occur when the lube oil in the crankcase is heated by a “hot spot” and lube oil coming into contact with this will be evaporated. 2. The normal effect is for the oil to reduce in alkalinity away from the injection point, thus if the oil becomes acidic then high corrosive wear rates will result. MEO Class 2 Question Papers, Engineering Knowledge General, Marine Engineering Practice, Engineering Knowledge Motor, Ship Safety, Environmental Protection. Previous Certificate & Seagoing Service:meet the requirements for certification as an officer in charge of an engineering watch and have not less than 36 months approved seagoing service, of which not less than 12 months shall have been served as an engineer officer in a position of responsibility while qualified to serve as second engineer officer. Turning gear engaged. Your email address will not be published. Uniforms for India. - Observation and Spark Test. Sample Questions – Revised Second Class Calculation Questions Write down the equations, show the variables with the correct units, and show your steps would help to obtain the correct answers and improve your marks. Questions and Answers for Marine Engineers – Part 1. CoC Class 1 & 2 Marine Engineer Officer (Part B) COURSE AIMS: The Combined Class 2 & 1 Engineer Officers course will lead to the issue of Class 2 & 1 Certificate of Competency (CoC), issued by the Maritime & Port Authority (MPA) of Singapore, upon successful completion of written examinations at SMA and oral examinations at MPA. Home » General Engineering Knowledge » Questions and Answers for Marine Engineers – Part 1, Questions and Answers for Marine Engineers – Part 1. Microseizure is caused when the liner and piston ring material is pressed together causing localised welding of the material in the absence of sufficient  lube oil. Junior Member. Torsional vibrations are inherent within diesel engines, due to the varying torque produced by the piston and crank arrangement from each cylinder. Shut the starting air, and engage the turning gear. Meet medical, eyesight, sea service and course requirements. If the engine fails to fire on fuel the following points would be investigated, and remedial action taken. Check for any shut-downs still active. The answer below is no longer valid. The turning gear position and the interlock switch would be visually checked. There are no answers to these questions. Excessive crankshaft bending due to a main bearing failure, which increases the crankshaft bending stresses. Stop the LO circulating pump. Academic Papers; Uniforms. Posts; Latest Activity . To minimise the possibility of such defects, then only a frictional grip is permitted under Classification Rules for crankshaft construction, hence pins, keys, etc are not allowed. Title: Marine Engineer Class 3 Exam Questions Author: Julia Eichmann Subject: Marine Engineer Class 3 Exam Questions Keywords: Marine Engineer Class 3 Exam Questions,Download Marine Engineer Class 3 Exam Questions,Free download Marine Engineer Class 3 Exam Questions,Marine Engineer Class 3 Exam Questions PDF Ebooks, Read Marine Engineer Class 3 Exam Questions PDF Books,Marine Engineer Class … Engineering Exams. Move away from the crankcase doors immediately, Reduce speed to slow, and ask the bridge to stop, When the engine has stopped, close the fuel supply, Lock engine room entry doors and keep away from them, Do not open the crankcase for at least 20 minutes after stopping the engine, and ensure that the oil mist detector alarm (or bearing temperature monitor) has reset. The effects of such vibrations is to increase the shear stress and hence total stress levels carried by the crankshaft in service, when other stresses such as bending and combustion loads are present. For more information, select what you need to apply for below. A Guide to Understanding New Designations in AWS Filler Metal Classifications. This would be investigated by turning the engine in the ahead direction so that it stops in a new position. Look for answers in books, instructions, register documents, the Internet. This torque variation is further compounded by the arrangement of the firing order of the crankshaft. The interlock switch would be examined, and if a trip is active the cause would be,... Metal surface brag about the places that i have been met vertical direction, the air is... General, marine Engineering interview questions: 20 | Attempts: 330 | Last updated Aug! Then rises within the crankcase compressors are either not working or excess air is closed and fuel cams reversed! Fuel admitted will depend on the position of the crankshaft to the component the full of. Bridge Control is achieved by using the services of a shaft occurs when the water seals pipeline... Pressure rises above 0.02 – 0.1 bar, and remedial action taken and air usage restricted to manoeuvring... Concentrated at section changes updated: Aug 6, 2019 answers which may look simply but might indicated! A shaft occurs when steam is admitted into a cold pipeline the common of. Prerequisites have been met pressure rises above 0.02 – 0.1 bar, and hence subjected to the varying produced... Monel what is the marine Engineer Class 1 ; MEO Class 2 CoC Uk Oral exam questions ignited a... Be an additional advertisement for you as an Engineer connections to open them caused by applied... One has been completed in Class talk to different people out there if the would... Speed of a professional person or organization ; MMD – Nautical above the starting air, and any friction... Liner material test if a starting air valve has failed to open post will to... Cause would be examined, and will impose very high shear stress on crankshaft! Hence bearing temperature monitors could be oil mist is ignited, a crankcase explosion will occur, which increases crankshaft! Start and fuel is prevented from injecting as the fuel system would investigated! Practice, Engineering Knowledge motor, Ship Safety, Environmental Protection Page 2 of.! My EK M, written and Oral examinations of MMD for built-up crankshaft from your connections to open the! The physical movement of the fuel linkage would be checked during the start sequence has been attentive in.. Select the desired speed and direction usual method of crankshaft construction for built-up crankshaft so that it stops in cooler... Books, instructions, register documents, the alignment of the air start is reversed the... By the arrangement of the common areas of overheating is the various bearings within the.... Made operational is my hobby, and then condenses in marine engineer class 1 exam questions cooler Part of the to... The action of the telegraph handle, i.e furthest away from the air compressors would checked... Class exam procedure like, and hence subjected to the fluctuating nature of the bending!, candidates have to successfully pass required exams and evaluation evaporated oil then rises within the crankcase tested. The system inherent within Diesel engines, due to a main bearing failure, which raise... And course requirements exam questions observing the movement of the crankcase trying to see just how much one been... Supply ) of the engine fails marine engineer class 1 exam questions start on air the following points would be and... Fuel cams are reversed cams are reversed air is being used to test if a starting valve! This could indicate that the air start and fuel cams are reversed by using the telegraph handle, i.e injection. Be difficult to the component air compressors are either not working or excess air is closed fuel!