Safety devices are installed on the main engines to protect the engine from major damage if the safety trips fail to perform their functions. Safety devices are the last source of engine safety. These devices protect the engine by relieving the excess pressure developed in the engine.
What are the safety devices on engines?
Main Engine Safety devices
|Main Engine Safety Devices||Main Engine Alarms and Trips|
|1. Crankcase Relief Door||1. Over Speed Trip|
|2. Scavenge Space Relief Door||2. Lube Oil Low Pressure Trips|
|3. Cylinder Head Relief Valve||3. Camshaft Lube Oil Low Pressure Trip|
|4. Starting Air Relief Valve||4. JCW low pressure trip|
What is the significant role of safety devices of a marine diesel engine?
Throughout its life, the propulsion engine of the ship goes through various loads and stresses from rough weather to harsh manoeuvring and breakdowns. To avoid any major loss or damage to the marine engine, several protective devices are fitted to safeguard the engine from major damages and breakdown.
What is the importance of different safety devices and automatic control equipment installed in the main engine?
Therefore, different safety devices are used on board ship and installed on the main switchboard (MSB) and electrical distribution panels. This ensures safe and efficient running of machineries and safety of the personal from electric shock even when one system is at fault.
What is the function of main engine?
Main, or propulsion, engines are used to turn the ship’s propeller and move the ship through the water. They typically burn diesel oil or heavy fuel oil, and may be able to switch between the two.
What are the safety devices on a boiler?
Three common boiler safety devices
- Safety valves. The safety valve is the most important safety device in a boiler or domestic hot-water system. …
- Water-level control and low-water fuel cutoff. Many systems combine these two separate boiler-safety functions into one unit. …
- Water-gauge glass.
What is main engine interlock?
Interlocks are provided so that the engine can be started or reversed only when certain conditions have been fulfilled. When there is remote control of engines, it is essential to have interlocks. This reduces the possibility of engine damage and any hazards to the operating personnel.
What are the important safety devices fitted on main switchboard?
What are switchboard safety devices ?
- Overload trip.
- Preferential trip.
- Under voltage trip.
- Over voltage trip.
- Reverse power relay (No voltage trip)
- Reverse current trip.
- A .C .B( Air circuit breaker )
What are the safety devices in generator?
What are the generator safety devices ?
- Over speed trip.
- L.O low pressure trip and alarm.
- F.O low pressure alarm.
- Jacket water high temperature alarm.
- Jacket water high temperature trip.
- Pressure gauge.
- L.O high temperature alarm.
Which of the following is a crankcase safety device?
There are various safety devices such as the crankcase exhaust fan, relief valve, bearing temperature sensor, breather pipe, oil mist detector, lube oil temperature sensor, and alarm.
Why is important the alarm system and protection device on engine room machinery?
The poor maintenance and incorrect operating of the shipboard machinery may result in a disaster. Such disasters can be really catastrophic, presenting immediate danger to the health of the people onboard, cause harm to the environment, etc.
What are the 7 functions of engine oil?
The seven primary functions of motor oil
- Minimize friction and reduce wear. The most common and essential function of motor oil is to minimize friction and wear between components. …
- Clean. …
- Cool engine parts. …
- Form a seal. …
- Dampen shock. …
- Prevent corrosion. …
- Transfer energy.
What are the 3 main engine systems?
Systems required to run the engine. There are three major engine systems necessary to keep an internal combustion engine running. They are the ignition system, the lubrication system, and the fuel system.
How many types of engine are there?
There are two types of engines, and they are: Internal combustion engines: When the combustion of fuel takes place inside the engine like in a car it is known as an internal combustion engine.