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THE BOILERS AND PRESSURE VESSELS ORDINANCE, 2002 QUESTION #4022
Question 1
'Induced Draft' fans are located:
  • Before the furnace
  • At the base of the chimney (after the boiler)✔️
  • Inside the drum
  • In the fuel tank
Correct Answer Explanation
They 'pull' the flue gases out of the boiler, creating a slightly negative pressure in the furnace.