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THE BOILERS AND PRESSURE VESSELS ORDINANCE, 2002 QUESTION #4081
Question 1
'Stack Temperature' that is too high usually indicates:
  • The boiler is clean
  • Scale or soot buildup on the tubes (poor heat transfer)✔️
  • The fuel is cheap
  • The weather is hot
Correct Answer Explanation
Heat is escaping up the chimney instead of going into the water.