ADR special provision 346
P203-compliant open cryogenic receptacles holding only UN 1977 nitrogen fully absorbed in porous material face no other ADR rules.
Open cryogenic receptacles that conform to packing instruction P203 and contain no dangerous goods other than UN 1977 nitrogen, refrigerated liquid, completely absorbed in a porous material, are subject to no further ADR requirements.
Refers to: P203; UN No. 1977.
Carried by 1 Table A entry
Source: ADR 2025 (ECE/TRANS/352), Volume I, section 3.3.1, special provision 346, page 625.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
ADR 2027 amendments (accepted, applying from 1 January 2027) are not yet reflected on this page.