Ketel Uap di Kapal Niaga (Part 4) - Lilin Tua #belajarbersama #mesin #kapal #lilintua #engineer

Summary

This video provides a detailed explanation of key components and safety mechanisms related to steam boilers on ships. It covers topics like the importance of safety valves, pressure indicators, and proper valve adjustments to ensure safe and efficient boiler operation. The presenter emphasizes the dangers of boiler explosions and stresses the importance of regular maintenance and safety checks. Viewers are guided on how to properly test and adjust valves, troubleshoot, and ensure that all systems are functioning correctly. The video is a valuable resource for young sailors and engineers working with marine machinery.

Takeaways

• 😀 The safety valve in a steam boiler is a crucial component that prevents explosions by releasing pressure when it becomes too high.
• 😀 All ship engineers should be trained in adjusting and maintaining the safety valves to ensure the safe operation of steam boilers.
• 😀 The safety valve typically operates with a spring mechanism, where the pressure inside the boiler pushes against the spring, causing the valve to open when a preset pressure is reached.
• 😀 Regular checks on the safety valve’s pressure settings are important to ensure they function properly in case of an emergency.
• 😀 A properly adjusted safety valve can prevent catastrophic failures, including boiler explosions, which can be extremely dangerous for the crew and the vessel.
• 😀 The spring force in the safety valve can be adjusted by turning a screw or nut, which increases or decreases the pressure at which the valve opens.
• 😀 It is critical to maintain the glass gauge and pressure indicators to ensure accurate readings of the boiler’s internal conditions.
• 😀 If the glass gauge or pressure indicator becomes clogged or blocked, it may lead to incorrect readings and compromise the safety of the boiler.
• 😀 Safety checks should be performed daily, including inspecting for leaks, cleaning the gauge glasses, and ensuring that the pressure settings are correct.
• 😀 The risks associated with a malfunctioning safety valve or an improperly set pressure are very high, including the potential for a boiler explosion, which could result in serious harm or death.

Q & A

What is the purpose of safety valves in a boiler system?

Safety valves in a boiler system are critical components designed to release pressure when it exceeds safe levels, ensuring the boiler operates within its designed pressure range. This prevents catastrophic failures such as explosions due to overpressure.

What are the key components of a safety valve?

The key components of a safety valve include the valve body, spindle, valve seat, spring, and the pressure adjustment mechanism. These parts work together to control the release of pressure when the threshold is exceeded.

Why is it important to calibrate the safety valve on a boiler?

It is crucial to calibrate the safety valve properly to ensure it activates at the correct pressure. If the valve opens too early or too late, it can result in inefficient boiler operation or unsafe pressure buildup.

How do you adjust the safety valve's spring tension?

The safety valve's spring tension is adjusted by turning the adjusting screw to increase or decrease the compression of the spring. Turning it clockwise increases tension, while turning it counterclockwise reduces it, changing the pressure at which the valve will open.

What is the role of the water level indicator in a boiler?

The water level indicator in a boiler shows the current water level inside the boiler. This is crucial for ensuring there is enough water to generate steam and to avoid overheating or damaging the boiler due to low water levels.

What are the risks of not maintaining the water level correctly in a boiler?

If the water level is too low, the boiler may overheat, potentially causing damage or even a catastrophic failure. On the other hand, an excessively high water level can lead to water carryover into the steam, affecting performance and possibly damaging the system.

What is the significance of the 'glass gauge' or 'glass tube' in boiler operation?

The 'glass gauge' or 'glass tube' allows operators to visually monitor the water level inside the boiler. This is a vital safety feature, as it helps detect any abnormalities in water levels that could lead to unsafe conditions if left unchecked.

What should an operator do if the glass gauge gets blocked or clogged?

If the glass gauge gets blocked, it should be immediately cleaned and cleared to ensure accurate water level readings. Any obstruction can lead to incorrect readings, which might cause the operator to mismanage the boiler’s water level and lead to unsafe conditions.

Why is it important for engineers to understand how to set up and maintain the boiler’s safety valve?

Understanding how to set up and maintain the safety valve is essential for engineers to ensure the boiler operates safely under pressure. A malfunctioning or improperly adjusted valve can lead to hazardous situations, such as over-pressurization or catastrophic failure.

What happens if a boiler’s safety valve is not properly maintained?

If a boiler’s safety valve is not properly maintained, it may fail to open when necessary, allowing pressure to build up dangerously. This can lead to boiler explosions, system failures, and severe damage to the equipment or even the surrounding environment.