政策法规现行有效美国危险品合规

§ 172.328 Cargo tanks.

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

本法规（49 CFR § 172.328）详细规定了美国境内运输危险货物时，罐体（Cargo Tanks）的标识要求。核心义务包括：托运人需在交付前提供或粘贴正确的识别编号（UN号/NA号）；气体类罐车须在两侧及两端标注不小于50mm的正式运输名称或通用名称；MC 330/331型罐车需标注“QT”或“NQT”以区分钢材类型；未加臭液化石油气（LPG）罐车必须显著标注“NON-ODORIZED”。建议相关从业者核实当前运营车辆及包装是否符合上述尺寸、位置及内容规范。

(a) Providing and affixing identification numbers. Unless a cargo tank is already marked with the identification numbers required by this subpart, the identification numbers must be provided or affixed as follows:

- (1) A person who offers a hazardous material to a motor carrier for transportation in a cargo tank shall provide the motor carrier the identification numbers on placards or shall affix orange panels containing the required identification numbers, prior to or at the time the material is offered for transportation.

- (2) A person who offers a cargo tank containing a hazardous material for transportation shall affix the required identification numbers on panels or placards prior to or at the time the cargo tank is offered for transportation.

- (3) For a cargo tank transported on or in a transport vehicle or freight container, if the identification number marking on the cargo tank required by § 172.302(a) would not normally be visible during transportation—

(i) The transport vehicle or freight container must be marked as required by § 172.332 on each side and each end with the identification number specified for the material in the § 172.101 table; and

- (ii) When the cargo tank is permanently installed within an enclosed cargo body of the transport vehicle or freight container, the identification number marking required by § 172.302(a) need only be displayed on each side and end of a cargo tank that is visible when the cargo tank is accessed.

(b) Required markings: Gases. Except for certain nurse tanks which must be marked as specified in § 173.315(m) of this subchapter, each cargo tank transporting a Class 2 material subject to this subchapter must be marked, in lettering no less than 50 mm (2.0 inches), on each side and each end with—

- (1) The proper shipping name specified for the gas in the § 172.101 table; or

- (2) An appropriate common name for the material (e.g., “Refrigerant Gas”).

(c) QT/NQT markings. Each MC 330 and MC 331 cargo tank must be marked near the specification plate, in letters no less than 50 mm (2.0 inches) in height, with—

- (1) “QT”, if the cargo tank is constructed of quenched and tempered steel; or

- (2) “NQT”, if the cargo tank is constructed of other than quenched and tempered steel.

(d) After October 3, 2005, each on-vehicle manually-activated remote shutoff device for closure of the internal self-closing stop valve must be identified by marking “Emergency Shutoff” in letters at least 0.75 inches in height, in a color that contrasts with its background, and located in an area immediately adjacent to the means of closure.
(e) NON-ODORIZED marking on cargo tanks containing LPG. No person may offer for transportation or transport a cargo tank containing unodorized liquefied petroleum gas (LPG) as authorized in § 173.315(b)(1) of this subchapter unless it is legibly marked NON-ODORIZED or NOT ODORIZED on two opposing sides near the marked proper shipping name as specified in paragraph (b)(1) of this section, or near the placards. The NON-ODORIZED or NOT ODORIZED marking may appear on a cargo tank used for both unodorized and odorized LPG.

[Amdt. 172-123, 55 FR 52592, Dec. 21, 1990, as amended at 56 FR 66255, Dec. 20, 1991; Amdt. 172-151, 62 FR 1228, Jan. 8, 1997; 62 FR 39405, July 22, 1997; 68 FR 19277, Apr. 18, 2003; 69 FR 64471, Nov. 4, 2004; 81 FR 35540, June 2, 2016]