ADR special packing provision PP92
UN 3531 and 3533 packagings must be built to vent gas or vapour so pressure cannot burst them if stabilization fails.
Under P002, packagings for UN 3531 and 3533 must be designed to let gas or vapour escape, so a pressure build-up after loss of stabilization cannot rupture them.
Note. Appears only in P002. Same effect as PP93 (P001) and the IBC provisions B18 and B19.
Carried by 2 Table A entries
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 4.1.4.1, P002, PP92, page 53.
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.