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COC ORAL EXAM PREPARATION (PART- 5) – BOILER

Exhaust Gas Boilers: About 30% – 34% of Fuel Energy input to engine are discharged to Exhaust Gas, as Thermal Energy. This thermal energy is converted into useful work in Exhaust Gas Boiler. Cochran Exhaust Gas Boiler: 1. A double-pass, vertical type, in which Exhaust gases from ME pass through 2 banks of tube. 2. …

COC ORAL EXAM PREPARATION (PART- 2) – SURVEY & CERTIFICATION

Image Credit: Marinelink Survey: Authorised independent examination, investigation, and inspection, measuring or testing of ship structure, machinery and equipment, done and supervised by Surveyors appointed by regulatory or commercial organisations. Classification Societies: They are third party independent bodies e.g. ABS (American Bureau of Shipping), BV (Bureau Veritas), LR (Lloyd’s Register), ClassNK (Nippon Kaiji Kyokai), DNV …

COC ORAL EXAM PREPARATION (PART- 3) – ELECTRICAL

Electrical Survey: Electrical equipment inspected and tested, during complete engine survey, at 4 years interval. Such a survey is prescribed, under the rules and regulations for the classification of ship. Following survey items generally apply to all ships: 1. Generators and governors. 2. Circuit breakers 3. Switchboard and fittings (main and emergency switchboard, distributor switchboard). …

COC ORAL EXAM PREPARATION (PART- I) – MACHINERY

Source: MAN Diesel (MAN-B&W-K98MC) Cylinder liner wears: 1) Normal frictional wear: Due to metal to metal contact with high surface asperities under marginal lubrication condition. 2) Abrasive wear: Due to presence of hard foreign particles from fuel, LO, and air. 3) Corrosive wear:Due to H₂SO₄ acid attack owing to sulphur within fuel. Only 0.1% of sulphur …

MAIN ENGINE AIR STARTING SYSTEM

  Diesel engine starting system     https://youtu.be/MbK730usMiA Duties of crew after joining ship ME protection system Add Your Heading Text Here The Surprising Ways Microprocessors are Present In Our Everyday Lives Boiler management Liquefied natural gas (LNG) ships LNG versus Diesel Main Causes of Air Starting Line Explosion Monica candy The Virtual Reality e-learning …

DIESEL ENGINE CRANKCASE EXPLOSION

INTRODUCTION: For any fire to begin, the fire tringle needs to be completed. To complete a fire tringle there must be present of a combustible material, oxygen or air to support combustion and a source of heat in proportional ratio and within the flammable limits, the reaction which causes fire or explosion becomes cyclic. Image …

DIESEL ENGINE SCAVENGE FIRE

INTRODUCTION: For any fire to begin, the fire tringle needs to be completed. To complete a fire tringle there must be present a combustible material, oxygen or air to support combustion and a source of heat at a temperature high enough to start combustion. Source: www.marinediesels.info In the case of scavenge fires:  the combustible …

LATEST DEVELOPMENT ON EU-MRV

Monitoring Reporting & Verification (MRV) is a standardised method to produce an accurate CO2 emissions inventory, through the quantification of CO2 emissions. The key principles of the scheme are to generate robust results using a lean approach considering parameters which are already monitored during normal operations. It is advocated as a way of monitoring a ship’s …