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Questions and Answers
Modulating combustion controls:
Modulating combustion controls:
- control the draft and feedwater temperature
- regulate the fuel and air supplies (correct)
- regulate the steam and feedwater supply
- control the oil atomizer
Automatically fired boilers will restart when:
Automatically fired boilers will restart when:
- the operator has completed the purge
- a lockout switch has been activated
- power fails
- water level has been re-established (correct)
T & P Relief valve provides protection for:
T & P Relief valve provides protection for:
- over pressure up to 500 kPa and temperature up to 100 °C
- both over pressure and high water temperature (correct)
- over pressure or high water temperature (single function only)
- over pressure up to 100 kPa and temperature under 99 °C
One of the ways to check the pilot flame system on an automatically fired boiler:
One of the ways to check the pilot flame system on an automatically fired boiler:
Burner Management Systems:
Burner Management Systems:
Which of the following item is not required for a steam power boiler?
Which of the following item is not required for a steam power boiler?
The purpose of the _____ on top of the spindle above the spring of a PRV is to prevent the spring tension from accidental adjustment:
The purpose of the _____ on top of the spindle above the spring of a PRV is to prevent the spring tension from accidental adjustment:
All boiler fittings must meet required service designation; and made for the following conditions:
All boiler fittings must meet required service designation; and made for the following conditions:
A blowdown ring on a safety valve is use to:
A blowdown ring on a safety valve is use to:
The type of combustion fuel control frequently used on a small package boiler, is a/an:
The type of combustion fuel control frequently used on a small package boiler, is a/an:
A flame relay in a simple burner management system (BMS) detects and amplify the flame signal, and permits the:
A flame relay in a simple burner management system (BMS) detects and amplify the flame signal, and permits the:
The air released from the water in the closed expansion tank type hot water heating system is directed to the:
The air released from the water in the closed expansion tank type hot water heating system is directed to the:
Modulating combustion control on a heating boiler accomplished by:
Modulating combustion control on a heating boiler accomplished by:
Fuel gas piping must be sized properly to ensure:
Fuel gas piping must be sized properly to ensure:
For boilers that are not under continuous supervision, the gauge glass is often fitted with _____ to prevent steam/water escaping in the event accidental breakage:
For boilers that are not under continuous supervision, the gauge glass is often fitted with _____ to prevent steam/water escaping in the event accidental breakage:
On low pressure steam boilers, the boiler outlet valves are usually:
On low pressure steam boilers, the boiler outlet valves are usually:
One of the possible causes for a safety relief valve to weep is:
One of the possible causes for a safety relief valve to weep is:
During warmup of a cold hot-water boiler, excessive pressure build-up is prevented by:
During warmup of a cold hot-water boiler, excessive pressure build-up is prevented by:
In a hot water heating system equipped with a closed expansion tank, if the system is completely filled with the temperature raised to the point of excessive expansion:
In a hot water heating system equipped with a closed expansion tank, if the system is completely filled with the temperature raised to the point of excessive expansion:
All boilers having a fixed water level must have at least:
All boilers having a fixed water level must have at least:
A closed expansion tank is usually equipped with a:
A closed expansion tank is usually equipped with a:
Which of the following item is not required for a hot water heating system?
Which of the following item is not required for a hot water heating system?
One of the possible causes for safety relief valves to weep on a hot water heating system is:
One of the possible causes for safety relief valves to weep on a hot water heating system is:
If the pressure relief valve continues to discharge after the try lever test:
If the pressure relief valve continues to discharge after the try lever test:
What is often described as the Power Engineer's primary_job?
What is often described as the Power Engineer's primary_job?
The main controlling device used with an on/off combustion fuel control with a steam boiler is a _____ sensing element.
The main controlling device used with an on/off combustion fuel control with a steam boiler is a _____ sensing element.
Flashcards
Modulating Combustion Controls
Modulating Combustion Controls
Controls fuel and air supplies to maintain desired steam pressure and efficiency.
Automatic Boiler Restart
Automatic Boiler Restart
The boiler restarts automatically once the water level is re-established.
T&P Relief Valve Purpose
T&P Relief Valve Purpose
T&P relief valves protect against both excessive pressure and high temperature.
Checking Pilot Flame System
Checking Pilot Flame System
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Burner Management System (BMS)
Burner Management System (BMS)
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Unnecessary Item for Steam Boiler
Unnecessary Item for Steam Boiler
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PRV Spindle Protection
PRV Spindle Protection
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Boiler Fitting Requirements
Boiler Fitting Requirements
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Blowdown Ring Function
Blowdown Ring Function
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Small Boiler Combustion Control
Small Boiler Combustion Control
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Flame Relay Purpose
Flame Relay Purpose
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Expansion Tank (Closed System)
Expansion Tank (Closed System)
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Modulating Combustion Control Action
Modulating Combustion Control Action
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Boiler Outlet Valves
Boiler Outlet Valves
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Power Engineer's Primary Task
Power Engineer's Primary Task
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Study Notes
- Modulating combustion controls regulate the fuel and air supplies
- Automatically fired boilers restart when the water level has been re-established
- The T & P Relief valve provides protection for both over pressure and high water temperature
- One way to check the pilot flame system on an automatically fired boiler is to close pilot fuel valves prior to initiating the start-up sequence
- Burner Management Systems connect the fuel train components with other burner safety controls to organize the boiler safety system
- A boiler drum vent valve is not required for a steam power boiler
- The purpose of the jam nut / lock nut on top of the spindle above the spring of a PRV is to prevent the spring tension from accidental adjustment
- All boiler fittings must meet required service designation, and be compatible with operating temperature & pressure and material
- A blowdown ring on a safety valve adjusts the blowdown differential by varying the size of the huddling chamber
- The type of combustion fuel control frequently used on a small package boiler is the on and off control
- A flame relay in a simple burner management system (BMS) detects and amplifies the flame signal, and this permits the SSOV to remain energized
- The air released from the water in the closed expansion tank type hot water heating system is directed to the expansion tank
- Modulating combustion control on a heating boiler is accomplished by changing the amount of fuel and air to the burner
- Fuel gas piping must be sized properly to ensure the required supply delivery is maintained
- For boilers that are not under continuous supervision, the gauge glass is often fitted with safety shut-off gauge valves to prevent steam/water escaping in the event of accidental breakage
- On low pressure steam boilers, the boiler outlet valves are usually gate valves because of their low resistance to flow
- One of the possible causes for a safety relief valve to weep is that it has damaged seating surfaces
- During warmup of a cold hot-water boiler, excessive pressure build-up is prevented by an expansion tank
- In a hot water heating system equipped with a closed expansion tank, if the system is completely filled with the temperature raised to the point of excessive expansion, the pressure build-up opens the safety relief valve
- All boilers having a fixed water level must have at least one gage glass
- A closed expansion tank is usually equipped with a gauge glass
- An air separator is not required for a hot water heating system
- One of the possible causes for safety relief valves to weep on a hot water heating system is a waterlogged hot water heating system
- If the pressure relief valve continues to discharge after the try lever test, operate the try lever 2 or 3 times to clear the valve disc
- Maintaining boiler water level is often described as the Power Engineer's primary job
- The main controlling device used with an on/off combustion fuel control with a steam boiler is a pressure sensing element
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