Ask X3What does 49 CFR 173.217 (Carbon dioxide, solid (dry ice)) require?
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Based on 49 CFR 173.217, the requirements for transporting solid carbon dioxide (dry ice) depend on the mode of transport and the specific use:
* General Packaging (All Modes via Aircraft or Water): Dry ice must be packed in containers designed and built to allow carbon dioxide gas to escape, preventing pressure build-up that could burst the packaging. Packagings must follow general packaging requirements (subpart B), but do not need to meet part 178 requirements.
* Vessel Transportation:
* Transport vehicles and freight containers carrying dry ice must be conspicuously marked on two sides with “WARNING CO 2 SOLID (DRY ICE).”
* Other packages must be marked “CARBON DIOXIDE, SOLID—DO NOT STOW BELOW DECKS.”
* Aircraft Transportation:
* The net mass of the dry ice must be marked on the outside of the package (or unit load device if it acts as the packaging), along with applicable subpart D, part 172 markings.
* The shipper must make arrangements with the operator for each shipment.
* If used as a refrigerant for non-hazardous materials in a unit load device, standard quantity limits do not apply, provided the device is identified to the operator and allows gas to vent to prevent dangerous pressure build-up.
* Standard shipping papers are not required if alternative written documentation is provided containing: the proper shipping name (Dry ice or Carbon dioxide, solid), class 9, UN number 1845, number of packages, and the net quantity in each package.
* Packages with 2.5 kg (5.5 pounds) or less of dry ice used as a refrigerant are excepted from all other subchapter requirements (provided they meet the packaging release rule) if marked with “Carbon dioxide, solid” or “Dry ice”, the name of the contents being cooled, and the net weight (or an indication that it is 2.5 kg / 5.5 pounds or less).
* Dry ice used to refrigerate diagnostic or treatment materials (e.g., frozen medical specimens) is excepted from shipping paper and certification requirements if the packaging release rule and operator arrangements are met, and the package is marked “Carbon dioxide, solid” or “Dry ice” along with an indication that the contents are for diagnostic or treatment purposes.