[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR174.300]

[Page 680-681]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 174_CARRIAGE BY RAIL--Table of Contents
 
Subpart G_Detailed Requirements for Class 3 (Flammable Liquid) Materials
 
Sec. 174.300  Special handling requirements.


    (a) Class 3 (flammable liquid) materials may not be loaded, 
transported, or stored in a rail car equipped with any type of lighted 
heater or open-flame device, or in a rail car equipped with any 
apparatus or mechanism utilizing an internal combustion engine in its 
operation.
    (b) A truck body or trailer which is loaded with a Class 3 
(flammable liquid) materials and equipped with a lighted heater or any 
automatic heating or refrigerating apparatus may not be loaded on a 
flatcar except as provided in paragraph (c) of this section.
    (c) Heating or refrigeration apparatus on a motor vehicle loaded 
with Class 3 (flammable liquid) materials may be operated while the 
motor vehicle is loaded on a flatcar only if:
    (1) The lading space is not equipped with any electrical apparatus 
that is not non-sparking or explosion-proof;
    (2) There is no combustion apparatus in the lading space;

[[Page 681]]

    (3) There is no connection for the return of air from the lading 
space to any combustion apparatus; and
    (4) The heating system conforms to Sec. 393.77 of this title and 
does not heat any part of the lading over 54 [deg]C (129 [deg]F).
    (d) Metal barrels or drums containing Class 3 (flammable liquid) 
materials may be transported in a steel gondola or flatcar or in a stock 
car. However, they may not be transported in a hopper bottom car.

[Amdt. 174-26, 41 FR 16092, Apr. 15, 1976, as amended by Amdt. 174-31, 
43 FR 31143, July 20, 1978; Amdt. 174-68, 55 FR 52683, Dec. 21, 1990]