Baffles, Bulkheads & Tank Construction Practice Test, Test 1 of 2
Question 1 of 10
A tank vehicle is equipped with baffles inside the cargo tank. What type of liquid surge are baffles designed to help control?
✓
Correct!
Correct. The manual states that baffled liquid tanks have bulkheads with holes that let liquid flow through, and that the baffles help control the forward and backward liquid surge.
49 CFR 383.119(c) (differences in handling of baffled/compartmented tank interiors versus non-baffled vehicles)
✗
Not quite.
Wrong. The manual specifically states that side-to-side surge can still occur in baffled tanks, meaning baffles do not control this type of surge.
The correct answer is A: Forward-and-backward surge.
49 CFR 383.119(c) (differences in handling of baffled/compartmented tank interiors versus non-baffled vehicles)
✗
Not quite.
Wrong. The manual limits baffle effectiveness to forward-and-backward surge and explicitly notes side-to-side surge is not controlled, so baffles do not address both equally.
The correct answer is A: Forward-and-backward surge.
49 CFR 383.119(c) (differences in handling of baffled/compartmented tank interiors versus non-baffled vehicles)
✗
Not quite.
Wrong. The manual does not describe a vertical surge category; the two types discussed are forward-and-backward and side-to-side.
The correct answer is A: Forward-and-backward surge.
49 CFR 383.119(c) (differences in handling of baffled/compartmented tank interiors versus non-baffled vehicles)