Question 1645 Deck General

70% to pass

According to 46 CFR Subchapter T, rigid plastic and other nonmetallic piping materials _______________.

A are preferable to steel pipe
B may only be used in non-vital systems
C may replace metal pipe or tubing in any installation
D may not be used on inspected vessels
AI Explanation

The correct answer is B) may only be used in non-vital systems. According to 46 CFR Subchapter T, rigid plastic and other nonmetallic piping materials may only be used in non-vital systems on inspected vessels. This means they cannot be used in systems that are critical to the safety and operation of the vessel, such as fuel lines, fire mains, or other vital systems. The regulations prioritize the use of more durable metallic piping in these crucial applications. The other answer choices are incorrect because A) rigid plastic is not universally preferable to steel pipe, C) the regulations do not allow them to replace metal pipe in all installations, and D) they are permitted for use on inspected vessels, but only in non-vital systems.

Related Questions
Q@q.QuestionNumber:What color are obstruction lights on mobile offshore drilling units that are loc... Q@q.QuestionNumber:Which letter in illustration D030DG below represents a plain whipping? Q@q.QuestionNumber:The International Maritime Dangerous Goods Code assigns classes for dangerous go... Q@q.QuestionNumber:During loading and discharging operations, in addition to when the cargo tanks h... Q@q.QuestionNumber:If you reef a marconi mainsail, the sail area _______________.

Ready to test your knowledge?

Take a Deck General Practice Exam
Official Resources
USCG Navigation Center USCG National Maritime Center Merchant Mariner Credentials
← Previous Question All Questions Next Question →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience with progress tracking.

Get the App