Marine Engineering Systems

Turning Gear Motor

• A reversible electric motor that can be used to turn slowly a large diesel engine or steam turbine and gearbox assembly

Main Engine Remote Control System

• A system to control an engine installed in a vessel from an operating panel in the wheelhouse

Generator

• Output voltage of generators on ships with very large electrical loads can be 3.3 kV, 6.6 kV, and 11 kV
• Generators can be operated at low loads, but this can lead to negative consequences such as reduced efficiency, overcooling, and accumulation of moisture and condensation

Transformers

• Devices that transfer electric energy from one alternating-current circuit to one or more other circuits, either increasing or reducing the voltage

Engine Sump Tank

• No additional information provided

Manual and Remote Starting Procedures

• Lube oil temperature must be at least 90°F before connecting to the main switchboard

Load Monitoring and Management

• System allows users to control when a load is added or shed from a power system
• Prevents too many high-current loads from operating at the same time

ACB

• Used in ship electrical systems for their capability to provide both overcurrent and short-circuit protection, as well as additional features like adjustable trip settings and communication capabilities

Boiler Safety

• Boiler safety relief valve is a critical safety component that helps regulate pressure levels in the system
• Boiler flame eye is a photocell operated flame sensor that detects whether the burner is firing or not
• Deaerator valve is a device that removes dissolved gases like oxygen from a liquid
• Boiler control system is a set of devices and software that monitors and regulates the operation of a boiler

Boiler Operations

• Purging will remove any gases present in the furnace by forcing it out through the funnel
• Stop valve/main steam valve connects the boiler steam system to the steam main/header
• Blowing down the water level gauge is used to control boiler water parameters within prescribed limits to minimize scale, corrosion, carryover, and other specific problems
• Feed water pump is a specific type of pump used to pump feedwater into a steam boiler

Boiler Instruments

• Pressure gauge is usually located on the front of the boiler and has a green and red section that can be used to detect when the pressure is too low, too high, or just right

Exhaust Stack and Economizer

• Exhaust stack is the piping that conveys the hot combustion gases away from the boiler to the outside
• Economizer is a heat transfer product that removes heat from the flue gas and adds it to the incoming feed water

Corrosion and Water Analysis

• Causes of corrosion include water analysis factors such as chloride, pH level, and alkalinity

Main Engine Components

• Cascade tank, hot well, feed water tank, and condensate tank are all components of the main engine system
• Main engine is any internal combustion, compression-ignition engine that is configured to supply propulsion power for an ocean-going vessel

Cooling and Starting Systems

• Cooling water system removes heat from the engine and prevents it from overheating
• Starting air system provides compressed air to the engine cylinders to initiate the combustion process
• Fuel oil system delivers the fuel from the storage tanks to the engine cylinders, where it is injected and burned to produce power
• Lubrication system circulates oil throughout the engine to reduce friction and wear between the moving parts

Engine Temperatures and Preparations

• Fresh water cooling temperature before engine: 80°C (176°F) - 90°C
• Inbound and outbound cooling temperatures are not specified
• Temperature of fuel (HFO) in the service tank: 95°C
• Air blowing is carried out to release any moisture or other residues inside the cylinders
• Preparation of M/E before departure includes checking the M/E circ. fresh water temp stop/standby at 55°C

This quiz covers various systems used in marine engineering, including turning gear motors, main engine remote control systems, and generators. It explores the components and functions of these systems in vessels.