Question 137Steam Plants - 1st Asst/Chief

The correct answer is A) The design refractory cone angle must be maintained. The refractory cone angle is critical for the proper operation of the burner openings. Maintaining the correct cone angle ensures that the burner flame is directed properly and efficiently. Deviating from the designed cone angle can negatively impact the combustion process and lead to improper heating or potential safety issues. The other options are incorrect because: B) Filling cracks is important but not the most critical factor, C) The type of firebrick used is less important than the cone angle, and D) The smoothness of the repair surface is secondary to maintaining the proper refractory cone angle.