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Steam Boiler Startup Procedures

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Questions and Answers

What must the Power Engineer monitor during the startup of a steam boiler?

Furnace purge, ignition, and main burner light off (correct)

Boiler insulation, steam line color, and plant layout

Fuel type, boiler material, and combustion chamber size

Water temperature, boiler pressure, and steam flow rate

Which resource is recommended to refer to for starting, warming, and cutting in steam boilers?

National Fire Protection Association (NFPA) guidelines

Manufacturer's guide for industrial equipment

ASME I Power Boiler Code

ASME VI Recommended Rules for the Care and Operation of Heating Boilers (correct)

What is imperative to prevent water hammer and its severe damage?

Increasing the temperature of the furnace purge

Using a lower quality fuel for combustion

Warming up the steam lines and headers before placing boilers in service (correct)

Reducing the steam pressure inside the boiler

According to ASME VI, what should operators of single boiler steam heating systems warm up simultaneously?

Heating boilers and their steam piping Signup and view all the answers

What should be done prior to firing the boiler during a simultaneous warm-up procedure?

Open the boiler steam outlet valve Signup and view all the answers

What must be ensured about the steam piping system during a boiler warm up?

It must be warm, dry, and ready to go online Signup and view all the answers

Which guidelines are recommended for the care of power boilers?

ASME VII Recommended Guidelines for the Care of Power Boilers Signup and view all the answers

What type of valve is typically used as the block valve at the outlet of the boiler?

Gate valve Signup and view all the answers

What is the purpose of opening the boiler drum vent during the warm-up procedure?

To release corrosive dissolved gases from the boiler water Signup and view all the answers

Why is it important to open low point system drains during the warm-up procedure?

To drain out condensate as it forms Signup and view all the answers

What should be done when the boiler pressure reaches 15 to 20 kPa?

Expel all the air from the boiler Signup and view all the answers

What is the purpose of raising the water temperature and pressure slowly by operating the boiler at low fire?

To prevent excessive stress due to thermal shock and uneven expansion Signup and view all the answers

When should the superheater drains or vents be closed during the warm-up procedure?

After adequate flow of superheated steam is established Signup and view all the answers

What should be done when the operating control reaches its cut-out point during warm-up?

Blow down the water column and gauge glass Signup and view all the answers

What is a common practice when warming up a steam header or main at the same time as the boiler?

'Ensure steam traps are in service and steam traps bypasses are closed' Signup and view all the answers