Question 1369 Deck General

70% to pass

You have orders to load cargoes of carbon disulfide, diisopropylamine and pyridine on your multi-product tankship. Which statement is TRUE?

A A tank of pyridine may be used to separate a tank of carbon disulfide from a tank of diisopropylamine.
B Carbon disulfide may be carried in NOS. 1 and 2 center tanks and diisopropylamine in NOS. 1 and 2 wing tanks.
C Carbon disulfide must be separated from pyridine by two barriers (cofferdams, voids, empty tanks, etc.).
D Pyridine and diisopropylamine may be carried in tanks having a common header vent.
AI Explanation

The correct answer is A) A tank of pyridine may be used to separate a tank of carbon disulfide from a tank of diisopropylamine. This is correct because carbon disulfide and diisopropylamine are incompatible cargoes that require separation by an intermediate tank or void space. Using a tank of pyridine as an intermediate barrier between the two incompatible cargoes is an acceptable way to meet the separation requirements. The other options are incorrect because B) does not correctly identify the tank arrangements, C) requires two barriers instead of just one intermediate tank, and D) allows the incompatible cargoes to be carried in tanks with a common header vent, which is not permitted.

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