IATA第50期危险品规则(2009)显著修订和变化
313–Has been deleted. The packing instruction currently applies to fuel cell cartridges containing flammable liquids, including when contained in, or packed with, equipment. PI313 has been replaced by PI374, PI375 and
PI376 which apply to the fuel cell cartridges, fuel cell cartridges contained in equipment and fuel cell cartridges packed with equipment respectively. The format of the packing instructions and the numbers assigned are aligned with the reformatting exercise for the other packing instructions that will apply from 1 January 2011.
313-被删除，取而代之的是PI374，PI376和PI376，分别适用于含易燃液体的燃料电池罐，以及安装在设备中或与设备包装在一起的含易燃液体的燃料电池罐。这三个新包装说明的格式和代号与2011年1月1日生效的整个包装说明的新格式一致。
435– Has been deleted and replaced by Packing Instruction 499. The wording of PI 499 is aligned with the revised wording in P099 in the UN Model Regulations.
435-被删除，由PI499取代。PI499与UN《规章范本》P099修订后的内容相一致。
495/496/497–These new packing instructions have been added to address the preparation of fuel cell cartridges containing water-reactive substances (UN3476) and cartridges contained in equipment and packed with
equipment. The packing instructions apply to the fuel cell cartridges, fuel cell cartridges contained in equipment and fuel cell cartridges packed with equipment respectively. The format of the packing instructions and the numbers assigned are aligned with the reformatted packing instructions that will apply for the other packing instructions from 1 January 2011 as shown in Appendix H.
495/496/497-新增的包装说明，适用于含遇水反应物质的燃料电池罐（UN3476），以及安装在设备中或与设备包装在一起的含遇水反应物质的燃料电池罐。这三个新包装说明的格式和代号与2011年1月1日开始生效的整个包装说明的新格式（见附件H）一致。
602–The wording in PI602 with respect to the primary receptacle and the secondary packagings being “watertight” has been revised to read leak proof” to align with the terminology used in PI650.
602-PI602中关于主容器和第二层包装应“防漏”的描述中，将“watertight”改用“leakproof”，与PI650中用词一致。