[Code of Federal Regulations]
[Title 49, Volume 5]
[Revised as of October 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR393.69]

[Page 416-417]
 
                        TITLE 49--TRANSPORTATION
 
                      DEPARTMENT OF TRANSPORTATION
 
PART 393_PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of 
Contents
 
                         Subpart E_Fuel Systems
 
Sec.  393.69  Liquefied petroleum gas systems.

    (a) A fuel system that uses liquefied petroleum gas as a fuel for 
the operation of a motor vehicle or for the operation of auxiliary 
equipment installed on, or used in connection with, a motor vehicle must 
conform to the ``Standards for the Storage and Handling of Liquefied 
Petroleum Gases'' of the National Fire Protection Association, Battery 
March Park, Quincy, MA 02269, as follows:
    (1) A fuel system installed before December 31, 1962, must conform 
to the 1951 edition of the Standards.
    (2) A fuel system installed on or after December 31, 1962, and 
before January 1, 1973, must conform to Division IV of the June 1959 
edition of the Standards.

[[Page 417]]

    (3) A fuel system installed on or after January 1, 1973, and 
providing fuel for propulsion of the motor vehicle must conform to 
Division IV of the 1969 edition of the Standards.
    (4) A fuel system installed on or after January 1, 1973, and 
providing fuel for the operation of auxiliary equipment must conform to 
Division VII of the 1969 edition of the Standards.
    (b) When the rules in this section require a fuel system to conform 
to a specific edition of the Standards, the fuel system may conform to 
the applicable provisions in a later edition of the Standards specified 
in this section.
    (c) The tank of a fuel system must be marked to indicate that the 
system conforms to the Standards.

[36 FR 15445, Aug. 14, 1971, as amended at 37 FR 4342, Mar. 2, 1972; 41 
FR 53031, Dec. 3, 1976; 53 FR 49400, Dec. 7, 1988]