The Undeclared Class 8 in a Sealed Container
A 40-foot container arrives at the Port of Vancouver from Busan and is booked as "general machinery, non-hazardous." During a routine scanning check, the terminal notes dense, irregular shapes in the rear third. The shipper's transport document lists 18,000 kg of industrial parts and cites no UN number. Inside, a spot check finds 240 fibreboard boxes of a liquid cleaning concentrate, each box holding four 5-litre plastic jerricans. The label shows a corrosive pictogram and "UN 1760, Corrosive liquid, n.o.s. (contains phosphoric acid), 8, PG III." The container also holds a pallet of mild steel brackets stowed directly against the jerricans. The vessel is scheduled to load in six hours. The shipper insists the product is "dilute enough not to count."
1. Determine whether this shipment is regulated under the IMDG Code and identify the immediate documentary and marking failures.
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The product is regulated. A Class 8 liquid meeting PG III criteria is dangerous goods whether or not it is dilute, and UN 1760 is a generic n.o.s. entry that requires the technical name in parentheses on the transport document. The declared "general machinery, non-hazardous" description is a false declaration.
Failures to identify:
- No UN number, proper shipping name, class, or packing group on the multimodal dangerous goods transport document.
- No dangerous goods declaration, so no 24-hour emergency telephone number and no shipper's certification.
- Container/vehicle packing certificate absent or not signed by the person who packed the unit.
- Packages bear the corrosive label but the container lacks the required Class 8 placards and the UN number placard.
- The packing certificate must confirm the unit was packed and secured per the Code; nothing supports that here.
The correct entry would be something like "UN 1760, CORROSIVE LIQUID, N.O.S. (phosphoric acid), 8, III" with the required additional information. Because the goods were misdeclared, the carrier should not load pending verification and re-declaration. This is not a labelling technicality; the absence of a declaration means no one downstream planned stowage, segregation, or emergency response for a corrosive liquid.
2. Assess the stowage arrangement and explain the segregation and packaging concern with the steel brackets.
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The jerricans are packed in fibreboard boxes, which is a combination packaging, and PG III corrosives in 5-litre jerricans are plausible for that packing. The problem is the pallet of mild steel brackets stowed directly against the corrosive packages.
Reasoning: Class 8 liquids can leak, and phosphoric acid attacks mild steel. Even where the Code does not mandate a specific segregation distance between Class 8 and general cargo, the stowage requirement is that packages be secured and arranged so that leakage cannot damage other goods or the container structure, and so that incompatible materials are separated. General cargo that reacts with the goods should be treated as incompatible for stowage purposes.
Practical answer: separate the brackets from the corrosive packages with a physical barrier or distance, stow the corrosive packages so leaks drain away from other cargo, and ensure the jerricans are upright and secured against shifting. The container floor and any absorbent material should be checked. If the brackets are themselves a reactive metal in bulk form, the concern is greater. The unit should be repacked before loading, and the packing certificate must reflect the actual arrangement.
3. The shipper argues the goods are exempt because the acid concentration is low. How should the carrier respond, and what immediate action is warranted?
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Low concentration is not itself an exemption. The question is whether the mixture meets the classification criteria for Class 8, which depends on test data such as corrosion to skin or to steel/aluminium, not on the shipper's opinion. If the product is diluted below the Class 8 criteria, the shipper must be able to show that determination, and even then the substance may still be regulated for other reasons.
Immediate action: do not load. Hold the container, notify the shipper in writing that the declaration is rejected, and require a corrected transport document and packing certificate. Because the goods were misdeclared, the carrier should consider whether the shipment falls under the security provisions and whether reporting to the competent authority is required. The vessel's six-hour window is not a reason to load an undeclared corrosive; a misdeclared Class 8 in a sealed container is exactly the scenario the documentation and packing-certificate rules exist to prevent.