Boiler Plant Emergency Conditions Quiz

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Questions and Answers

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?

<p>Stop the fuel flow immediately (D)</p> Signup and view all the answers

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

<p>Lack of training of operating personnel (A)</p> Signup and view all the answers

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

<p>Furnace explosions and pressure explosions (B)</p> Signup and view all the answers

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

<p>To recognize and prevent emergency situations (C)</p> Signup and view all the answers

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

<p>Fan success (A)</p> Signup and view all the answers

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

<p>Calm and efficient action (A)</p> Signup and view all the answers

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

<p>To act calmly and efficiently in emergencies (B)</p> Signup and view all the answers

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

<p>Complete familiarity (A)</p> Signup and view all the answers

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

<p>Comfortable with procedures (C)</p> Signup and view all the answers

What may cause a pressure explosion in a boiler?

<p>Weakening due to excessive steam pressure (B)</p> Signup and view all the answers

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

<p>A brief interruption of the fuel supply (D)</p> Signup and view all the answers

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

<p>Scale and sludge buildup (A)</p> Signup and view all the answers

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

<p>Failure of safety shut-off valves (C)</p> Signup and view all the answers

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

<p>Testing and maintenance of fittings and controls (B)</p> Signup and view all the answers

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

<p>Corrosion (B)</p> Signup and view all the answers

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

<p>Repeated unsuccessful attempts to light off without appropriate purging (B)</p> Signup and view all the answers

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

<p>Notify proper authorities and report all particulars concerning the explosion (C)</p> Signup and view all the answers

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