You have orders to load cargoes of carbon...

🔍 Key Concepts

• Cargo compatibility and segregation requirements in 46 CFR for carbon disulfide, diisopropylamine, and pyridine • Rules for common venting / common header systems on multi‑product tankships • Meaning of single vs. double barrier separation (cofferdams, voids, empty tanks) between incompatible cargoes

💭 Think About

• Look up each cargo individually in the CFR tables and note any special requirements about segregation and venting, especially for carbon disulfide. • Ask yourself which cargoes may share vapor spaces (common headers) and which must be kept completely isolated due to reactivity or vapor hazard. • Consider whether carbon disulfide is allowed adjacent to the other two cargoes at all, and if it is, how many structural barriers are required between them.

✅ Before You Answer

• Verify in the 46 CFR hazardous materials / tank vessel tables how carbon disulfide must be separated from amines such as diisopropylamine. • Check any special notes or footnotes on venting/headers for pyridine and diisopropylamine (whether common headers are allowed). • Confirm the exact barrier requirement (none, one, or two barriers) specified between carbon disulfide and diisopropylamine before choosing among the options.

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

Pyridine and diisopropylamine may be carried in tanks having a common header vent.

A tank of carbon disulfide may be used to separate a tank of pyridine from a tank of diisopropylamine.

Carbon disulfide may be carried in NOS. 1 and 2 center tanks and diisopropylamine in NOS. 1 and 2 wing tanks.

Diisopropylamine must be separated from carbon disulfide by two barriers (cofferdams, voids, empty tanks, etc.)

🔍 Key Concepts

💭 Think About

✅ Before You Answer