Boiler Plant Emergency Conditions Quiz

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What should the operator do if the water level in the gauge glass of a boiler is found to be below the visible range?

Continue operating the boiler and monitor the water level closely

Shut off the fuel and air to the boiler immediately (correct)

Increase the feedwater flow to the boiler

Open all superheater drain valves

What is one of the underlying causes of high water level in a boiler?

Low water cut-off failure (correct)

Insufficient fuel oil supply

Excessive air supply

Broken gauge glass

In the event of a draft fan failure, what must be done immediately to prevent a furnace explosion?

Open the main steam valve at the header

Increase the feedwater flow to the boiler

Shut off the fuel supply immediately (correct)

Manually operate the level control system

What should be done if flame failure occurs during operation of a boiler?

Stop the fuel flow immediately Signup and view all the answers

What are some common reasons for boiler accidents based on the text?

Lack of training of operating personnel Signup and view all the answers

What are the general classifications under which boiler explosions may occur?

Furnace explosions and pressure explosions Signup and view all the answers

What is the role of the boiler operator in emergency conditions?

To recognize and prevent emergency situations Signup and view all the answers

Which of the following is NOT listed as an adverse condition to be recognized by the operator?

Fan success Signup and view all the answers

What is emphasized as essential for the operator when upset conditions occur?

Calm and efficient action Signup and view all the answers

What is the importance of prior knowledge of emergency procedures for the operator?

To act calmly and efficiently in emergencies Signup and view all the answers

What is the suggested level of familiarity with emergency procedures for every operator?

Complete familiarity Signup and view all the answers

What is the recommended state for the operator to be in regarding specific procedures in the plant?

Comfortable with procedures Signup and view all the answers

What may cause a pressure explosion in a boiler?

Weakening due to excessive steam pressure Signup and view all the answers

What can lead to the accumulation of an explosive mixture of fuel and air?

A brief interruption of the fuel supply Signup and view all the answers

What is a potential cause of incomplete combustion in a boiler?

Scale and sludge buildup Signup and view all the answers

What can result in the accumulation of an explosive mixture after a complete furnace flameout?

Failure of safety shut-off valves Signup and view all the answers

What should the boiler operator pay regular attention to in order to prevent an explosion?

Testing and maintenance of fittings and controls Signup and view all the answers

What may cause a pilot flame that is too small or unstable?

Corrosion Signup and view all the answers

What can lead to the admission of fuel to the main burner before the pilot burner is established?

Repeated unsuccessful attempts to light off without appropriate purging Signup and view all the answers

What should be done in case of a boiler explosion according to legislation?

Notify proper authorities and report all particulars concerning the explosion Signup and view all the answers