Question 261 Deck General

70% to pass

You are to load styrene in bulk, which is subject to self-polymerization. In accordance with 46 CFR Table 153 what are you required to do?

A Be furnished with a Certificate of Inhibition to be maintained on the bridge
B Inject nitrogen to pad any ullage above the styrene to prevent contact with oxygen
C Use heating coils to maintain the styrene within the temperatures specified by the shipper
D Not carry any cargo in the tanks surrounding the tank loaded with styrene
AI Explanation

The correct answer is A) Be furnished with a Certificate of Inhibition to be maintained on the bridge. According to 46 CFR Table 153, styrene is a cargo that is subject to self-polymerization. To safely transport this cargo, the regulations require the vessel to be furnished with a Certificate of Inhibition that must be maintained on the bridge. This certificate ensures that the proper inhibitor has been added to the styrene cargo to prevent self-polymerization during the voyage. The other options are incorrect because they do not address the specific requirement for a Certificate of Inhibition. Padding the ullage with nitrogen, using heating coils, or not carrying other cargoes in surrounding tanks are not the primary regulatory requirements for transporting self-polymerizing cargoes like styrene.

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