政策法规现行有效美国危险品合规

§ 173.417 Authorized fissile materials packages.

效力	法规类型	发布日期	生效日期	发文机构
现行有效	部门规章	2026-08-07	2026-09-08	Code of Federal Regulations (CFR) - Transportation (Title 49)

发布08-07

生效09-08

摘要总结AI 辅助解读

本条款规定了美国境内运输易裂变材料（Fissile Materials）的授权包装要求。对于放射性活度不超过 A1/A2 值的材料，必须使用符合 10 CFR Part 71 标准的 Type AF、B(U)F 或 B(M)F 包装，或经美国主管当局重新验证的外国认证包装（仅限进出口）。特别地，浓缩六氟化铀（UF6）残留物可使用特定规格的 7A 型金属气瓶运输，但需严格遵循表 2 规定的尺寸与重量限制。超过 A1/A2 值的材料则需使用经 NRC 批准的 Type B(U)/B(M) 包装。该规定直接影响核燃料及放射性同位素的跨境物流合规性。

(a) Except as provided in § 173.453, fissile materials containing not more than A 1 or A 2 as appropriate, must be packaged in one of the following packagings:

(1)(i) Any packaging listed in § 173.415, limited to the Class 7 (radioactive) materials specified in 10 CFR part 71, subpart C;

- (ii) Any Type AF, Type B(U)F, or Type B(M)F packaging that meets the applicable standards for fissile material packages in 10 CFR part 71; or

- (iii) Any Type AF, Type B(U)F, or Type B(M)F packaging that meets the applicable requirements for fissile material packages in Section VI of the International Atomic Energy Agency “Regulations for the Safe Transport of Radioactive Material, SSR-6 (IBR, see § 171.7 of this subchapter),” and for which the foreign Competent Authority certificate has been revalidated by the U.S. Competent Authority, in accordance with § 173.473. These packages are authorized only for export and import shipments.

- (2) A residual “heel” of enriched solid uranium hexafluoride may be transported without a protective overpack in any metal cylinder that meets both the requirements of § 173.415 and § 178.350 of this subchapter for Specification 7A Type A packaging, and the requirements of § 173.420 for packagings containing greater than 0.1 kg of uranium hexafluoride. Any such shipment must be made in accordance with Table 2, as follows:

Table 2—Allowable Content of Uranium Hexafluoride (UF 6 “Heel” in a Specification 7A Cylinder) Maximum cylinder diameter Centimeters Inches Cylinder volume Liters Cubic feet Maximum Uranium 235-enrichment (weight) percent Maximum “Heel” weight per cylinder UF 6 kg lb Uranium-235 kg lb 12.7 5 8.8 0.311 100.0 0.045 0.1 0.031 0.07 20.3 8 39.0 1.359 12.5 0.227 0.5 0.019 0.04 30.5 12 68.0 2.410 5.0 0.454 1.0 0.015 0.03 76.0 30 725.0 25.64 5.0 11.3 25.0 0.383 0.84 122.0 48 3,084.0 1 108.9 4.5 22.7 50.0 0.690 1.52 122.0 48 4,041.0 2 142.7 4.5 22.7 50.0 0.690 1.52 1 10 ton. 2 14 ton

(b) Fissile Class 7 (radioactive) materials with radioactive content exceeding A 1 or A 2 must be packaged in one of the following packagings:

- (1) Type B(U), or Type B(M) packaging that meets the standards for packaging of fissile materials in 10 CFR part 71, and is approved by the U.S. Nuclear Regulatory Commission and used in accordance with § 173.471;

- (2) Type B(U) or Type B(M) packaging that also meets the applicable requirements for fissile material packaging in Section VI of the International Atomic Energy Agency “Regulations for the Safe Transport of Radioactive Material, SSR-6,” and for which the foreign Competent Authority certificate has been revalidated by the U.S. Competent Authority in accordance with § 173.473. These packagings are authorized only for import and export shipments.

(c) A package approved by the U.S. Nuclear Regulatory Commission under a special package authorization granted in accordance with 10 CFR 71.41(d) provided it is offered only for domestic transportation in accordance with the requirements in § 173.471(b) and (c).

[69 FR 3673, Jan. 26, 2004; 69 FR 55118, Sept. 13, 2004, as amended at 79 FR 40612, July 11, 2014; 80 FR 1163, Jan. 8, 2015; 80 FR 72928, Nov. 23, 2015]