Question 331General Subjects - 1st Asst/Chief

70% to pass

If a vessel is to be laid up for an extended period of time with minimal utilities provided where freezing is not a concern; boilers may be laid up wet. What statement concerning wet boiler lay-up is true?

AThe boiler should be completely filled with ordinary fresh water (such as potable water) until water issues from the atmospheric vent.
BThe boiler should be filled with dearated and chemically treated water until the water level is brought to the top of the sight glass.
CThe boiler should be completely filled with dearated and chemically treated water until water issues from the atmospheric vent.
DThe boiler should be filled with ordinary water (such as potable water) until the water level is brought to the top of the sight glass.
AI Explanation

The correct answer is C) The boiler should be completely filled with dearated and chemically treated water until water issues from the atmospheric vent. This is the correct answer because during wet lay-up of a boiler, it is important to completely fill the boiler with dearated and chemically treated water in order to prevent corrosion of the internal surfaces. Filling the boiler until water issues from the atmospheric vent ensures that there are no air pockets or spaces left in the boiler where corrosion could occur. The other options are incorrect because ordinary fresh water (A) is not recommended, as it lacks the necessary chemical treatment to protect against corrosion. Filling only to the top of the sight glass (B and D) does not ensure complete filling and protection of the entire boiler interior.

Related Questions
Q@q.QuestionNumber:If a centrifugal pump were continually operated with the discharge valve closed ... Q@q.QuestionNumber:If the demister used in the device shown in the illustration is improperly insta... Q@q.QuestionNumber:An important component of pre-planning for fire emergencies is the fire control ... Q@q.QuestionNumber:Which term represents the ability of a speed control governor to maintain prime ... Q@q.QuestionNumber:What is the function of device "A" shown in the illustration? Illustration MO-01...

Ready to test your knowledge?

Take a General Subjects - 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