regulations news

摘要

The International Air Transport Association (IATA) has issued a second Addendum to the 49th edition of its Dangerous Goods Regulations (DGR). The Addendum, posted on June 16, takes effect immediately. The main change relates to the carriage of gas mixtures in aluminium cylinders and follows the disturbing incident in which a cylinder of ethyl chloride exploded at a cargo warehouse in Dubai after being flown from Manchester, UK. Packing Instruction 200 has been amended to specifically prohibit the use of aluminium cylinders, unless approved by the appropriate authority, for the carriage of gas mixtures containing any of the following gases: UN 1037 ethyl chloride, UN 1063 methyl chloride, UN 1063 refrigerant gas R40, UN 1085 vinyl bromide, stabilised, UN 1086 vinyl chloride, stabilised, UN 1860 vinyl fluoride, stabilised, and UN 1912 methyl chloride and methylene chloride mixture. Other changes to the wording of Packing Instruction 200 clarify the prohibition on the use of aluminium alloy cylinders and copper valves for certain substances. UN 3156 compressed gas, oxidising, nos has been added to the list of substances for which the construction materials of the cylinders and their accessories must be compatible with the contents, according to Particular Packing Provision 4. The Addendum includes a significant revision to 4.1.3.2 on the classification of mixtures and solutions containing two or more dangerous goods, clarifying the process of determining the appropriate UN entry. Another amendment to 5.2.0.2 clarifies that the provisions of any relevant packing instruction take precedence over ISO standards for the construction of cylinders and closed cryogenic receptacles. Finally, it takes the opportunity to add in some new operator variations from Nippon Cargo Airlines, Swiss International and US Airways.