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Boiler Post Startup Inspection Quiz

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Questions and Answers

What should be visually checked to ensure complete combustion in a boiler?

Circulating pumps

Flame (correct)

Auxiliary system checks

Heating system checks

What should be monitored to ensure the hot water system circulating pump is operating within the expected range?

Stuffing boxes

Clean water flow to seals

Mechanical seals

Pump discharge pressure, suction pressure, and differential pressure (correct)

Which color flame indicates complete combustion in a typical natural gas flame?

Orange

Black

Blue (correct)

Bright yellow

What should never be present on the tips of a light fuel oil (number 2 light oil) flame?

Black Signup and view all the answers

What should circulating pumps have adequate flow of to their seals for cooling, sealing, and lubrication?

Clean water Signup and view all the answers

What should be done to prevent high pressure in a hot water boiler?

Maintain the normal boiler operating pressure at 25% or 69 kPa (10 psi) less than the safety relief valve setting Signup and view all the answers

What should be monitored to determine when hot water boiler surfaces require cleaning?

Stack temperature Signup and view all the answers

Why should the maximum operating temperature of hot water boiler water not exceed 120°C?

To avoid accelerating corrosion and meet the heating needs of the system Signup and view all the answers

What is a critical step in steam boiler operation related to water level maintenance?

Ensuring that water level is maintained within range in the boiler Signup and view all the answers

What should be visually checked in a boiler flame?

Black tips or smokiness of the flame Signup and view all the answers

What is the purpose of the pressure differential required for safety valves?

To prevent the boiler pressure from exceeding the maximum allowable working pressure Signup and view all the answers

How should the high-pressure cut-off be set for power boilers?

No greater than the lowest safety valve set point minus safety valve blowdown Signup and view all the answers

What should be observed once the boiler has been fired?

The steam pressure reaches the desired set point and does not increase further Signup and view all the answers

What does rising stack temperatures at a given firing rate indicate?

Heat transfer surfaces are becoming dirty Signup and view all the answers

When should the stack temperature be monitored and recorded?

Once the boiler has completely warmed up and is at normal operating pressure Signup and view all the answers