Question 1167Deck General70% to pass
On a vapor control system, each vessel's vapor connection flange must have a _______________.
AI Explanation
The correct answer is D) a stud at least 1" long projecting from the flange face.
The U.S. Coast Guard regulations require that each vessel's vapor connection flange have a stud at least 1" long projecting from the flange face. This is to ensure a secure and reliable connection between the vessel's vapor recovery system and the shore-based vapor control system during cargo transfer operations. The stud provides a positive means of attachment and prevents the flange from slipping or becoming disconnected.
The other options are incorrect because they do not meet the specific regulatory requirement for a 1" stud on the vapor connection flange. A hose saddle (A), a pressure gauge (B), or a 6" reducer (C) would not fulfill the necessary design and safety specifications for a vapor control system flange connection.
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