[Code of Federal Regulations]

[Title 49, Volume 2]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR179.102-1]



[Page 1042]

 

                        TITLE 49--TRANSPORTATION

 

   CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, 

                      DEPARTMENT OF TRANSPORTATION

 

PART 179_SPECIFICATIONS FOR TANK CARS--Table of Contents

 

 Subpart C_Specifications for Pressure Tank Car Tanks (Classes DOT-105, 

                         109, 112, 114 and 120)

 

Sec. 179.102-1  Carbon dioxide, refrigerated liquid.



    (a) Tank cars used to transport carbon dioxide, refrigerated liquid 

must comply with the following special requirements:

    (1) All plates for tank, manway nozzle and anchorage of tanks must 

be made of carbon steel conforming to ASTM A 516/A 516M (IBR, see Sec. 

171.7 of this subchapter), Grades 55, 60, 65, or 70, or AAR 

Specification TC 128-78, Grade B. The ASTM A 516/A 516M plate must also 

meet the Charpy V-Notch test requirements of ASTM A 20/A 20M (see table 

16) (IBR, see Sec. 171.7 of this subchapter) in the longitudinal 

direction of rolling. The TC 128 plate must also meet the Charpy V-Notch 

energy absorption requirements of 15 ft.-lb. minimum average for 3 

specimens, and 10 ft.-lb. minimum for one specimen, at minus 50 [deg]F 

in the longitudinal direction of rolling in accord with ASTM A 370 (IBR, 

see Sec. 171.7 of this subchapter). Production-welded test plates 

prepared as required by W4.00 of AAR Specifications for Tank Cars, 

appendix W (IBR, see Sec. 171.7 of this subchapter), must include 

impact test specimens of weld metal and heat-affected zone. As an 

alternate, anchor legs may be fabricated of stainless steel, ASTM A 240/

A 240M Types 304, 304L, 316 or 316L, for which impact tests are not 

required.

    (2)-(6) [Reserved]

    (b) [Reserved]



[29 FR 18995, Dec. 29, 1964. Redesignated at 32 FR 5606, Apr. 5, 1967, 

and amended by Amdt. 179-10, 36 FR 21347, Nov. 6, 1971; Amdt. 179-28, 46 

FR 49906, Oct. 8, 1981; 46 FR 55266, Nov. 9, 1981; Amdt. 179-32, 48 FR 

50440, 50441, Nov. 1, 1983; 49 FR 42736, Oct. 24, 1984; Amdt. 179-45, 55 

FR 52728, Dec. 21, 1990; Amdt. 179-52, 61 FR 28680, June 5, 1996; 67 FR 

51660, Aug. 8, 2002; 68 FR 75760, Dec. 31, 2003]