IMDG Code framework, scope and application
What this domain tests
Items here ask what the IMDG Code is, which instrument gives it legal force, where a rule sits in its structure, and whether a particular cargo is inside or outside its scope.
Legal basis and structure
- The Code is adopted by the IMO and made mandatory for ships carrying dangerous goods through SOLAS chapter VII; marine pollutants also engage MARPOL Annex III.
- Volume 1 holds Part 1 (general provisions, training, security), Part 2 (classification) and Part 3 (the Dangerous Goods List, limited and excepted quantities). Volume 2 holds Part 4 (packing and tank provisions), Part 5 (consignment procedures), Part 6 (construction and testing of packagings) and Part 7 (transport operations).
- The Supplement contains the EmS Guide, the MFAG and the incident reporting procedures. It is not a third volume, but it explains the emergency schedules referenced in the Dangerous Goods List.
Scope and exclusions
- The Code governs dangerous goods in packaged form. Solid bulk cargoes are regulated by the IMSBC Code instead.
- Ship's stores and equipment, and goods needed for the propulsion and operation of the ship, fall outside its provisions; passenger and crew allowances are narrow.
- Revisions follow a two-year cycle (Amendment 41-22 applied from 1 January 2024, 42-24 from 1 January 2026); the edition in force governs the voyage.
Worked example
A planner asks whether 5,000 t of iron ore fines in a bulk carrier needs dangerous goods documentation. Reasoning: the cargo is unpackaged solid bulk, so the IMSBC Code applies and the IMDG Code does not. If the same ore were bagged and shipped as cargo units, it would be classified under the IMDG Code and documented accordingly.
Traps
- Treating the Code as voluntary guidance.
- Confusing it with the IMSBC Code.
- Assuming the edition on board is automatically the one in force.