###### Editorial Note on [Part 173](/current/title-49/part-173?toc=1)

#### Editorial Note:

Nomenclature changes to part 173 appear at [70 FR 56098](https://www.federalregister.gov/citation/70-FR-56098), Sept. 23, 2005.

#### § 173.241 Bulk packagings for certain low hazard liquid and solid materials.

When [§ 172.101 of this subchapter](/on/2024-09-24/title-49/section-172.101) specifies that a hazardous material be packaged under this section, only the following bulk packagings are authorized, subject to the requirements of subparts A and B of [part 173 of this subchapter](/on/2024-09-24/title-49/part-173) and the special provisions specified in column 7 of the [§ 172.101](/on/2024-09-24/title-49/section-172.101) table.

(a) *Rail cars:* Class DOT 103, 104, 105, 109, 111, 112, 114, 115, 117, or 120 tank car tanks; Class 106 or 110 multi-unit tank car tanks; and AAR Class 203W, 206W, and 211W tank car tanks. Additional operational requirements apply to high-hazard flammable trains (*see* [§ 171.8 of this subchapter](/on/2024-09-24/title-49/section-171.8)) as prescribed in [§ 174.310 of this subchapter](/on/2024-09-24/title-49/section-174.310). Except as otherwise provided in this section, DOT Specification 111 tank cars and DOT Specification 111 tank cars built to the CPC-1232 industry standard are no longer authorized to transport Class 3 (flammable) liquids in Packing Group III, unless retrofitted to the DOT Specification 117R retrofit standards or the DOT Specification 117P performance standards provided in [part 179, subpart D of this subchapter](/on/2024-09-24/title-49/part-179/subpart-D).

(1) DOT Specification 111 tank cars and DOT Specification 111 tank cars built to the CPC-1232 industry standard are no longer authorized to transport Class 3 (flammable liquids) unless retrofitted prior to the date in the following table:

| Material | Jacketed or non-jacketed tank car | DOT-111 not authorized on or after | DOT-111 built to the CPC-1232 not authorized on or after |
| --- | --- | --- | --- |
| *Class 3, PG III (flammable liquid) material* | Non-jacketed | May 1, 2029 | May 1, 2029. |
| | Jacketed | May 1, 2029 | May 1, 2029. |
| | | | |
| --- | --- | --- | --- |
| Note: For unrefined petroleum products ([§ 173.41](/on/2024-09-24/title-49/section-173.41)) and ethanol, *see* [§§ 173.242](/on/2024-09-24/title-49/section-173.242) and [173.243](/on/2024-09-24/title-49/section-173.243) as appropriate. | | | |

(2) Conforming retrofitted tank cars are to be marked “DOT-117R.”

(3) Conforming performance standard tank cars are to be marked “DOT-117P.”

(b) *Cargo tanks:* DOT specification MC 300, MC 301, MC 302, MC 303, MC 304, MC 305, MC 306, MC 307, MC 310, MC 311, MC 312, MC 330, MC 331, DOT 406, DOT 407, and DOT 412 cargo tank motor vehicles; and non-DOT specification cargo tank motor vehicles suitable for transport of liquids.

(c) *Portable tanks.* DOT Specification 51, 56, 57 and 60 portable tanks; IMO type 1, 2 and 5, and IM 101 and IM 102 portable tanks; UN portable tanks; marine portable tanks conforming to [46 CFR part 64](/on/2024-09-24/title-46/part-64); and non-DOT Specification portable tanks suitable for transport of liquids are authorized. For transportation by vessel, also see [§ 176.340 of this subchapter](/on/2024-09-24/title-49/section-176.340). For transportation of combustible liquids by vessel, additional requirements are specified in [§ 176.340 of this subchapter](/on/2024-09-24/title-49/section-176.340).

(d) *IBCs.* IBCs are authorized subject to the conditions and limitations of this section provided the IBC type is authorized according to the IBC packaging code specified for the specific hazardous material in Column (7) of the [§ 172.101](/on/2024-09-24/title-49/section-172.101) Table of this subchapter and the IBC conforms to the requirements in [subpart O of part 178 of this subchapter](/on/2024-09-24/title-49/part-178/subpart-O) at the Packing Group performance level as specified in Column (5) of the [§ 172.101](/on/2024-09-24/title-49/section-172.101) Table for the material being transported.

(1) IBCs may not be used for the following hazardous materials:

(i) Packing Group I liquids; and

(ii) Packing Group I solids that may become liquid during transportation.

(2) The following IBCs may not be used for Packing Group II and III solids that may become liquid during transportation:

(i) Wooden: 11C, 11D and 11F;

(ii) Fiberboard: 11G;

(iii) Flexible: 13H1, 13H2, 13H3, 13H4, 13H5, 13L1, 13L2, 13L3, 13L4, 13M1 and 13M2; and

(iv) Composite: 11HZ2 and 21HZ2.

(e) *Large Packagings.* Large Packagings are authorized subject to the conditions and limitations of this section provided the Large Packaging type is authorized according to the IBC packaging code specified for the specific hazardous material in Column (7) of the [§ 172.101](/on/2024-09-24/title-49/section-172.101) Table of this subchapter and the Large Packaging conforms to the requirements in [subpart Q of part 178 of this subchapter](/on/2024-09-24/title-49/part-178/subpart-Q) at the Packing Group performance level as specified in Column (5) of the [§ 172.101](/on/2024-09-24/title-49/section-172.101) Table for the material being transported.

(1) Except as specifically authorized in this subchapter, Large Packagings may not be used for Packing Group I or II hazardous materials.

(2) Large Packagings with paper or fiberboard inner receptacles may not be used for solids that may become liquid in transportation.

[Amdt. 173-224, [55 FR 52663](https://www.federalregister.gov/citation/55-FR-52663), Dec. 21, 1990, as amended at [56 FR 66275](https://www.federalregister.gov/citation/56-FR-66275), Dec. 20, 1991; Amdt. 173-238, [59 FR 38067](https://www.federalregister.gov/citation/59-FR-38067), July 26, 1994; Amdt. 173-252, [61 FR 28676](https://www.federalregister.gov/citation/61-FR-28676), June 5, 1996; [66 FR 33435](https://www.federalregister.gov/citation/66-FR-33435), June 21, 2001; [68 FR 57632](https://www.federalregister.gov/citation/68-FR-57632), Oct. 6, 2003; [70 FR 34075](https://www.federalregister.gov/citation/70-FR-34075), June 13, 2005; [75 FR 5394](https://www.federalregister.gov/citation/75-FR-5394), Feb. 2, 2010; [80 FR 26747](https://www.federalregister.gov/citation/80-FR-26747), May 8, 2015; [81 FR 53956](https://www.federalregister.gov/citation/81-FR-53956), Aug. 15, 2016]