[Code of Federal Regulations] [Title 49, Volume 2] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR173.243] [Page 548-549] TITLE 49--TRANSPORTATION CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 173--SHIPPERS--GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS--Table of Contents Subpart F--Bulk Packaging for Hazardous Materials Other Than Class 1 and Class 7 Sec. 173.243 Bulk packaging for certain high hazard liquids and dual hazard materials which pose a moderate hazard. When Sec. 172.101 of this subchapter 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 and the special provisions specified in column 7 of the Sec. 172.101 table. (a) Rail cars: Class DOT 103, 104, 105, 109, 111, 112, 114, 115, or 120 fusion-welded tank car tanks; and Class 106 or 110 multi-unit tank car tanks. (b) Cargo tanks. Specification MC 304, MC 307, MC 330, MC 331 cargo tank motor vehicles; and MC 310, MC 311, MC 312, DOT 407, and DOT 412 cargo tank motor vehicles with tank design pressure of at least 172.4 kPa (25 psig). Cargo tanks used to transport Class 3 or Division 6.1 materials, or Class 8, Packing Group I or II materials must conform to the following special requirements: (1) Pressure relief system: Except as provided by Sec. 173.33(d), each cargo tank must be equipped with a pressure relief system meeting the requirements of Sec. 178.346-3 or 178.347-4 of this subchapter. However, pressure relief devices on MC 310, MC 311 and MC 312 cargo tanks must meet the requirements for a Specification MC 307 cargo tank (except for Class 8, Packing Group I and II). Pressure relief devices on MC 330 and MC 331 cargo tanks must meet the requirement in Sec. 178.337- 9 of this subchapter. (2) Bottom outlets: DOT 407 and DOT 412 cargo tanks must be equipped with stop-valves meeting the requirements of Sec. 178.345-11 of this subchapter; MC 304, MC 307, MC 310, MC 311, and MC 312 cargo tanks must be equipped with stop-valves capable of being remotely closed within 30 seconds of actuation by manual or mechanic means and (except for Class 8, Packing Group I and II) by a closure activated at a temperature not over 121 deg.C (250 deg.F); MC 330 and MC 331 cargo tanks must be equipped with internal self-closing stop-valves meeting the requirements in Sec. 178.337-11 of this subchapter. (c) Portable tanks. DOT Specification 51 and 60 portable tanks; UN portable tanks and IM 101 and IM 102 portable tanks when a T code is specified in Column (7) of the Sec. 172.101 Table of this subchapter for a specific hazardous material; and marine portable tanks conforming to 46 CFR part 64 with design pressure of at least 172.4 kPa (25 psig) are authorized. (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 Sec. 172.101 Table of this subchapter and the IBC conforms to the requirements in subpart O of part 178 of this subchapter at the Packing Group performance level as specified in Column [[Page 549]] (5) of the Sec. 172.101 Table of this subchapter 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) A dual hazard material may be packaged in accordance with Sec. 173.242 if: (1) The subsidiary hazard is Class 3 with a flash point greater than 38 deg.C (100 deg.F); or (2) The subsidiary hazard is Division 6.1, Packing Group III; or (3) The subsidiary hazard is Class 8, Packaging Group, III. [Amdt. 173-224, 55 FR 52663, Dec. 21, 1990, as amended at 56 FR 66275, Dec. 20, 1991; Amdt. 173-138, 59 FR 49134, Sept. 26, 1994; Amdt. 173- 238, 59 FR 38068, July 26, 1994; Amdt. 173-243, 60 FR 40038, Aug. 4, 1995; Amdt. 173-246, 60 FR 49110, Sept. 21, 1995; Amdt. 173-252, 61 FR 28676, June 5, 1996; 62 FR 51560, Oct. 1, 1997; 64 FR 10780, Mar. 5, 1999; 66 FR 33435, June 21, 2001; 67 FR 15743, Apr. 3, 2002] Editorial Note: At 66 FR 33435, June 21, 2001, Sec. 173.243(d) was revised. Amendments published at 66 FR 45380, Aug. 28, 2001, could not be incorporated because of inaccurate amendatory instruction.