New Class 1c Boiler Exam

In a steam plant operation, it is crucial to check the water level and steam pressure as the first step. Monitoring the water level ensures that there is an adequate supply for steam generation and prevents the boiler from running dry, which can cause damage. Additionally, checking the steam pressure ensures that it is within the desired range for efficient operation and to avoid any potential safety hazards. These two factors are essential for maintaining the proper functioning of a steam plant.

The statement is true. The evaporation of 34.5 pounds of water per hour from and at a temperature of 212°F is indeed defined as one boiler horsepower. This is a commonly used measurement in the field of boilers and steam engines to quantify the power output of a boiler.

In a steam boiler system, the unit that turns the burner on and off based on steam pressure is the pressure control. This control mechanism monitors the steam pressure and activates the burner when the pressure drops below a certain threshold, ensuring that the boiler maintains the desired steam pressure. It is an essential component in regulating the steam generation process and preventing any potential damage or inefficiencies.

When testing the low water cut out, it is important to ensure that the burner is on before conducting the test. This is because the low water cut out is a safety device that is designed to shut off the burner if the water level in the system drops below a certain point. By testing it with the burner on, we can ensure that the device is functioning correctly and will shut off the burner when necessary to prevent any potential damage or hazards.

Sensible heat refers to the heat energy that can be sensed or felt. It can be measured using a thermometer because it is related to the temperature of an object or substance. When an object or substance gains or loses sensible heat, there is a corresponding change in its temperature, which can be detected by a thermometer. Therefore, the statement that sensible heat is measured with a thermometer and can be felt is true.

The low water cut out should be tested daily to ensure that it is functioning properly. This is important because the low water cut out is a safety feature that shuts off the boiler if the water level drops too low. By testing it daily, any issues or malfunctions can be identified and addressed promptly, preventing potential damage to the boiler and ensuring the safety of the system.

Before testing a low water cut off, it is important to know where the manual reset is located. Additionally, the boiler needs to be turned on in order to properly test the low water cut off. Checking for leaks and ensuring there is fuel are not directly related to testing the low water cut off and therefore not necessary before conducting the test.

Before testing a low water cut off, the boiler needs to be turned on and the location of the manual reset should be known.

This statement is true because using a try cock is a common method to check the water level in a system. By starting at the bottom and cracking open the water, any excess water can be drained out through the try cock. This helps to ensure that the system is properly filled and avoids any potential issues or damage caused by overfilling.

The low waterfuel cut off is a safety device used in boilers to prevent damage caused by low water levels. Testing this device daily ensures that it is functioning properly and can effectively shut off the fuel supply when the water level is too low. This regular testing helps to prevent accidents and maintain the safety of the boiler system.

The given answer is true because testing a low water fuel cut out in different ways, such as through quick and slow drain tests or an evaporation test, is indeed the best approach. These tests help ensure that the low water fuel cut out is functioning properly and will cut off the fuel supply when the water level is low, preventing potential damage or accidents.

If the gauge glass is cloudy and the water level cannot be seen, it is still possible to continue the boiler in operation by using the try cocks. By cracking open the bottom try cock, some water can be released and its level can be checked. This allows for a visual inspection of the water level and ensures that the boiler can be operated safely. Therefore, the statement is true.

When a burner motor starts up purging, it means that it is removing any impurities or contaminants from the air before the actual combustion process begins. This ensures that the air being used for combustion is clean and free from any particles that could potentially affect the efficiency or performance of the burner.

The unit that controls the starting and stopping of the burner by sensing the temperature of the water in a hot water boiler is called Aqua state.

The breeching is located between the boiler and the chimney. The breeching is a duct that connects the boiler to the chimney and allows the combustion gases to be safely vented out of the system. It is an important component in the boiler system as it ensures the proper flow of gases and helps maintain the efficiency and safety of the boiler operation.

Before a pilot is lit on automatic fired boilers, it is required to have 4 complete air changes. This ensures that the combustion process is efficient and safe by replacing the stale air with fresh air. The air changes help in maintaining the proper oxygen levels for combustion and preventing the accumulation of any harmful gases. It is an essential step to ensure the smooth operation of the boiler and minimize the risk of any potential hazards.

Safety valves should be tested on a monthly basis. This is because safety valves are critical components in systems that are designed to release excess pressure and prevent equipment damage or accidents. Regular testing ensures that the valves are functioning properly and can effectively relieve pressure when needed. Monthly testing allows for timely identification and resolution of any issues or malfunctions, ensuring the continued safety and reliability of the system.

Heating surface is defined as the surface where heat transfer occurs between water on one side and hot gas on the other side. This means that the heating surface acts as a boundary between the water and the hot gas, allowing heat to be transferred from the gas to the water.

When the pressure in a steam boiler exceeds 100 psi, two bottom blowdown valves are required. This is necessary to ensure proper maintenance and safety of the boiler system. The blowdown valves are used to remove sediment and impurities from the bottom of the boiler, preventing the build-up of harmful deposits and maintaining efficient operation. Having two valves allows for redundancy and ensures that the blowdown process can be carried out effectively.

A tee or lever handle valve is permitted to shut off a steam gauge because it provides a quick and easy way to control the flow of steam. The tee or lever handle valve can be easily turned on or off by simply rotating the lever handle, allowing for efficient and convenient operation. This type of valve is commonly used in steam systems to regulate the flow of steam and to isolate equipment for maintenance or repair.

A globe valve is used when steam flows in under the seat up and out the outlet. This type of valve has a disc that moves up and down to control the flow of steam. The disc is connected to a stem that is operated by a handwheel or actuator. When the steam flows in, the disc is lifted off the seat, allowing the steam to pass through the valve and out the outlet. When the steam flow stops or reverses, the disc is pushed back onto the seat, preventing backflow.

The first two things to check for in a hot water boiler plant are the water pressure and water temperature. These parameters are crucial in ensuring the proper functioning and efficiency of the boiler system. Monitoring the water pressure ensures that there is sufficient pressure for the water to circulate through the system effectively. Similarly, checking the water temperature helps to maintain the desired temperature range for efficient heating. Both these factors are essential for the safe and optimal operation of the hot water boiler plant.

The correct answer is 1/4. This is because the question asks for the minimum size pipe that can be used to attach a steam gauge to a steam boiler. The smaller the size of the pipe, the more restricted the flow of steam will be. Therefore, the smallest size pipe that can effectively attach the steam gauge to the steam boiler is 1/4.

The correct answer is 1 because it is the minimum pipe size required to hook up the water column to the boiler. This means that a pipe with a diameter of 1 inch is necessary to connect the water column to the boiler efficiently and effectively. Using a smaller pipe size, such as 1/2 inch or 1/4 inch, may result in insufficient water flow and pressure, which can negatively impact the performance of the boiler. A larger pipe size, such as 3/4 inch, may not be necessary and could potentially lead to unnecessary costs and inefficiencies.

The correct answer is 2 hrs because high pressure boilers require frequent monitoring and inspections to ensure their safe and efficient operation. Checking the boiler every 2 hours allows for early detection of any potential issues or malfunctions, allowing for timely maintenance or repairs to prevent accidents or breakdowns. Regular checks also help to maintain optimal performance and prevent any damage or deterioration that may occur over time. Therefore, checking the boiler every 2 hours is necessary to ensure its reliability and safety.

The question asks how often a 20 horsepower boiler should be checked. The answer of 24 suggests that the boiler should be checked every 24 hours. It is important to regularly check boilers to ensure they are functioning properly and to prevent any potential issues or accidents.

The minimum size drain required on a water column is 3/4.

The quick opening valve is located closest to the boiler shell when two bottom blow down valves are used on a steam boiler. This valve is designed to quickly release a large amount of steam and water from the boiler, allowing for rapid blow down and removal of impurities. The slow opening valve, on the other hand, is used to control the flow rate and ensure a gradual release of steam and water. The quick opening valve is positioned closer to the boiler shell to provide a more immediate and efficient blow down process.

When two bottom blow down valves are used on a steam boiler, the valve located closest to the boiler shell is the modulating valve. The modulating valve allows for precise control of the blow down process by adjusting the flow rate of water being discharged from the boiler. This valve is typically used in larger boilers where a more controlled blow down operation is required to maintain water quality and prevent excessive loss of heat and water.