§ 173.457 Transportation of fissile material packages—specific requirements.
发布08-07
生效09-08
摘要总结AI 辅助解读
本法规规定了美国境内运输易裂变放射性材料（Fissile Material）包装件的具体要求。核心在于引入临界安全指数（CSI）与运输指数（TI）的双重管控机制：非专用运输中，单包CSI上限为50且集装箱/车辆总CSI不超过50；专用运输中，总CSI上限放宽至100。此外，对中转存储提出了严格的物理隔离要求（组间间距至少6米）。该规定直接约束发货人、承运人及仓储服务商的操作流程与合规责任。
- (a) Packages containing fissile radioactive material which are not excepted under § 173.453 must be assigned by the offeror, in accordance with their definitions in § 173.403, a criticality safety index (CSI) and a transport index (TI).
- (b) Fissile material packages and conveyances transporting fissile material packages must satisfy the radiation level restrictions of § 173.441.
- (c) Except for consignments under exclusive use, the CSI of any package or overpack may not exceed 50. A fissile material package with CSI greater than 50 must be transported by exclusive use.
- (d) For non-exclusive use shipments of fissile material packages, except on vessels, the total sum of CSI's in a freight container or on a conveyance may not exceed 50.
- (e) For exclusive use shipments of fissile material packages, except on vessels, the total sum of CSI's in a freight container or on a conveyance may not exceed 100.
- (f) Exclusive use shipments of fissile material packages must satisfy the radiation level and administrative requirements of § 173.441(b).
- (g) The number of packages, overpacks and freight containers containing fissile material stored in transit in any one storage area must be so limited that the total sum of the CSI's in any group of packages, overpacks or freight containers does not exceed 50. Groups of packages shall be stored so as to maintain a spacing of a least 6 m (20 ft) between the closest surfaces of any two groups.
- (h) Provisions for shipment by vessel of Class 7 (radioactive) material packages, including fissile material packages by vessel are described in §§ 176.700-176.720 of this subchapter.
[69 FR 3692, Jan. 26, 2004]