§ 173.418 Authorized packages—pyrophoric Class 7 (radioactive) materials.
发布08-07
生效09-08
摘要总结AI 辅助解读
该条款规定了自燃性第7类（放射性）材料在美国境内运输的包装要求。此类材料若每包数量不超过A2限值，必须使用DOT规格7A包装容器，且容器材料不得与内容物发生反应或分解。内容物须为固态（除非豁免），置于密封耐腐蚀容器中，严禁使用摩擦或滑动盖。此外，材料必须无水无杂质，并通过混合惰性物质或充入惰性气体/液体进行钝化处理以防止自燃。空运此类材料时，必须使用B型包装。
Pyrophoric Class 7 (radioactive) materials, as referenced in the § 172.101 table of this subchapter, in quantities not exceeding A 2 per package must be transported in DOT Specification 7A packagings constructed of materials that will not react with, nor be decomposed by, the contents. Contents of the package must be—
- (a) In solid form and must not be fissile unless excepted by § 173.453;
- (b) Contained in sealed and corrosion resistant receptacles with positive closures (friction or slip-fit covers or stoppers are not authorized);
- (c) Free of water and contaminants that would increase the reactivity of the material; and
- (d) Inerted to prevent self-ignition during transport by either—
- (1) Mixing with large volumes of inerting materials, such as graphite, dry sand, or other suitable inerting material, or blended into a matrix of hardened concrete; or
- (2) Filling the innermost receptacle with an appropriate inert gas or liquid.
- (e) Pyrophoric Class 7 (radioactive) materials transported by aircraft must be packaged in Type B packages.
[Amdt. 173-244, 60 FR 50307, Sept. 28, 1995, as amended at 68 FR 45038, July 31, 2003; 70 FR 56098, Sept. 23, 2005]