🔍 Key Concepts

• 46 CFR Table 153 entries for styrene monomer or similar inhibited cargoes • Special requirements for self‑polymerizing cargoes (temperature control, inhibition, documentation) • Which requirements in Table 153 are explicitly stated vs. general good practice

💭 Think About

• Look up styrene in 46 CFR Table 153 and read across the row to see which special requirement codes or notes apply to it • Ask yourself which option matches a specific, written requirement in the table, not just something that sounds like safe practice • Check whether the regulation focuses on documentation, tank atmosphere, heating/cooling, or adjacent cargo tanks for this particular cargo

✅ Before You Answer

• Verify the exact wording in 46 CFR Table 153 for styrene (or styrene monomer) and note any reference to inhibition or certificates • Confirm whether the table mentions temperature limits or heating coils for this cargo, and if so whether it says to heat or to control/maximize temperature • Check if there is any specific requirement about inert gas padding or about leaving surrounding tanks empty, and whether that language actually appears for styrene in the table