Your tankship is carrying a cargo of styrene. Which of the following is NOT a requirement for carriage of this cargo?

Correct Answer: Option D — P/V valves with galvanized parts must be replaced.

Styrene carriage rules mandate inhibitor certificates, carriage endorsement on the COI, and blanked heating coils, but do not require replacement of P/V valves simply because they contain galvanized components unless chemically incompatible.