ADR code TP24
Special provisions for tanks (TP) per ADR 2025.
The portable tank may be fitted with a device located under maximum filling conditions in the vapour space of the shell to prevent the buildup of excess pressure due to the slow decomposition of the substance carried. This device shall also prevent an unacceptable amount of leakage of liquid in the case of overturning or entry of foreign matter into the tank. This device shall be approved by the competent authority or its authorized body.