Question 221Steam Plants - 1st Asst/Chief

70% to pass

The tube sheets installed in a fire-tube auxiliary boiler are normally connected by _______________.

Agirder stays

Bfire-tubes and stay-tubes

Cexternal boiler plating

Dseparate crown sheets

AI Explanation

The correct answer is B) fire-tubes and stay-tubes. In a fire-tube auxiliary boiler, the tube sheets are the thick plates at the front and rear of the boiler that the fire-tubes are connected to. The fire-tubes pass through the tube sheets and are expanded and welded in place to securely connect the tube sheets. Stay-tubes, which are shorter tubes that connect the front and rear tube sheets, also help secure the tube sheets in place. The other options are incorrect because: A) girder stays are not used to connect the tube sheets, C) the external boiler plating does not directly connect the tube sheets, and D) separate crown sheets are not a component of a fire-tube boiler.

Related Questions

Q@q.QuestionNumber:Condensate pumps have distinctly noticeable characteristics and can usually be ... Q@q.QuestionNumber:Flame scanners are used with boiler combustion control systems to monitor flame ... Q@q.QuestionNumber:One of the basic rules applying to the operation of a single-pass main condenser... Q@q.QuestionNumber:If the cooling water flow through the air ejector inter condensers and after con... Q@q.QuestionNumber:Which of the conditions listed could prevent a centrifugal condensate pump from ...

Ready to test your knowledge?

Take a Steam Plants - 1st Asst/Chief Practice Exam

Official Resources

46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center

← Previous All Questions Next →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

Get the App