政策法规现行有效美国危险品合规

§ 173.310 Exceptions for radiation detectors.

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

该法规为含2.2类非重复充装气瓶的辐射探测器提供运输豁免。若满足密封、压力及包装限制，可免除规格包装要求；除空运外，还可免除标签和标牌要求。特别地，容量≤50ml且符合安全标准的探测器完全豁免包括运单在内的所有危险品规定。其他情况需在运单注明依据本条运输，并提供紧急响应信息。

Radiation detectors, radiation sensors, electron tube devices, or ionization chambers, herein referred to as “radiation detectors,” that contain only Division 2.2 gases in non-refillable cylinders, are excepted from the specification packaging in this subchapter and, except when transported by air, from labeling and placarding requirements of this subchapter when designed, packaged, and transported as follows:

(a) Radiation detectors must be single-trip, hermetically sealed, welded metal inside containers that will not fragment upon impact.
(b) Radiation detectors must not have a design pressure exceeding 5.00 MPa (725 psig) and a capacity exceeding 405 fluid ounces (731 cubic inches). They must be designed and fabricated with a burst pressure of not less than three times the design pressure if the radiation detector is equipped with a pressure relief device, and not less than four times the design pressure if the detector is not equipped with a pressure relief device.
(c) Radiation detectors must be shipped in a strong outer packaging capable of withstanding a drop test of at least 1.2 meters (4 feet) without breakage of the radiation detector or rupture of the outer packaging. If the radiation detector is shipped as part of other equipment, the equipment must be packaged in strong outer packaging or the equipment itself must provide an equivalent level of protection.
(d) Emergency response information accompanying each shipment and available from each emergency response telephone number for radiation detectors must identify those receptacles that are not fitted with a pressure relief device and provide appropriate guidance for exposure to fire.
(e) Except as provided paragraph (f) of this section, transport in accordance with this section must be noted on the shipping paper.
(f) Radiation detectors, including detectors in radiation detection systems, are not subject to any other requirements of this subchapter, including shipping papers, if the detectors meet the requirements in paragraphs (a) through (d) of this section and the capacity of detector receptacles does not exceed 50 ml (1.7 oz.).

[82 FR 15891, Mar. 30, 2017]