政策法规现行有效美国危险品合规

§ 173.425 Table of activity limits—excepted quantities and articles.

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

该条款为美国联邦法规第49篇（运输）中关于放射性物质“例外数量”及“有限数量”包装活度限制的表格（Table 4）。它详细列出了固体、液体（含氚水）、气体等不同形态放射性内容物在仪器、单个物品及外包装中的最大允许活度限值。对于涉及核医学设备、含氚仪表或微量放射性同位素产品的跨境物流，此表是判定货物是否可按简化程序申报的关键依据。建议相关从业者核对最新生效版本，确保分类与包装符合 2026-09-08 起执行的合规要求。

The limits applicable to instruments, articles, and limited quantities subject to exceptions under §§ 173.421 and 173.424 are set forth in table 4 as follows:

Table 4—Activity Limits for Limited Quantities, Instruments, and Articles Nature of contents Instruments and articles Limits for each instrument or article 1 Package limits 1 Limited quantity package limits 1 Solids: Special form 10 −2 A 1 A 1 10 −3 A 1 Normal form 10 −2 A 2 A 2 10 −3 A 2 Liquids: Tritiated water: <0.0037 TBq/L (0.1 Ci/L) 37 TBq (1,000 Ci) 0.0037 TBq to 0.037 TBq/L (0.1 Ci to 1.0 Ci/L) 3.7 TBq (100 Ci) >0.037 TBq/L (1.0 Ci/L) 0.037 TBq (1.0 Ci) Other Liquids 10 −3 A 2 10 −1 A 2 10 −4 A 2 Gases: Tritium 2 2 × 10 −2 A 2 2 × 10 −1 A 2 2 × 10 −2 A 2 Special form 10 −3 A 1 10 −2 A 1 10 −3 A 1 Normal form 10 −3 A 2 10 −2 A 2 10 −3 A 2 1 For mixtures of radionuclides see § 173.433(d). 2 These values also apply to tritium in activated luminous paint and tritium adsorbed on solid carriers.

[Amdt. 173-244, 60 FR 50307, Sept. 28, 1995, as amended by Amdt. 173-244, 61 FR 20751, May 8, 1996; 63 FR 52849, Oct. 1, 1998; 65 FR 58630, Sept. 29, 2000; 66 FR 45383, Aug. 28, 2001; 69 FR 3676, Jan. 26, 2004]