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THE FUEL SYSTEM – tanks (p. 152)

THE FUEL SYSTEM – tanks (p. 152). SHORE-BASED TANKS – tanks on the shore in which bunkers are kept. BUNKERTANKS – spaces on board a vessel to store fuel. SETTLING TANKS – where the fuel is heated to lower the viscosity grade and separate fuel from water and impurities.

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THE FUEL SYSTEM – tanks (p. 152)

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  1. THE FUEL SYSTEM – tanks (p. 152) • SHORE-BASED TANKS – tanks on the shore in which bunkers are kept. • BUNKERTANKS – spaces on board a vessel to store fuel. • SETTLING TANKS – where the fuel is heated to lower the viscosity grade and separate fuel from water and impurities. • DAILY SERVICE TANKS – provides the engine with fuel. • GRAVITY TANKS – settling tanks + daily service tanks. • MIXING TANKS (VENT TANK, BUFFER TANK, CIRCULATING TANK) – mix HFO + MDO to ensure gradual transition from HFO to MDO.

  2. THE FUEL SYSTEM – p. 156/3 HFO • A • K • L • G • C • D • B • I • E

  3. THE FUEL SYSTEM – p. 156/3 MDO • H • N • M • F • J

  4. LUBRICATION, p. 160 Check the text on p. 160. What are the main purposes of lubrication? • Prevent wear and damage (as a result of friction) • Cooling (carries away the heat generated by friction) • Prevents impurities from clogging together • Anti-corrosive (prevent the forming of rust) • Seals off pits and scratches in cylinder walls (prevents the leaking of exhaust gasses through cylinder liners) • Reduces engine noise

  5. LUBRICATION, p. 160 (ex. p. 162) • A strainer filters the lubricant in the drain tank. • The lubricant is filtered before it is passed to the cooler. • A pump draws the lubricant from the drain tank. • A heat exchanger cools the lubricating oil. • Distribution branches distribute the lubricant to the various engine parts. • Strainers filter the lubricant after lubrication of engine parts. • The lube oil is returned to the drain tank.

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