[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR229.51]

[Page 313-314]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 229--RAILROAD LOCOMOTIVE SAFETY STANDARDS--Table of Contents
 
                     Subpart C--Safety Requirements
 
Sec. 229.51  Aluminum main reservoirs.

    (a) Aluminum main reservoirs used on locomotives shall be designed 
and fabricated as follows:
    (1) The heads and shell shall be made of Aluminum Association Alloy 
No. 5083-0, produced in accordance with American Society of Mechnical 
Engineers (ASME) Specification SB-209, as defined in the ``ASME Boiler 
and Pressure Vessel Code'' (1971 edition), section II, Part B, page 123, 
with a minimum tensile strength of 40,000 p.s.i. (40 k.s.i.).
    (2) Each aluminum main reservoir shall be designed and fabricated in 
accordance with the ``ASME Boiler and Pressure Vessel Code,'' section 
VIII, Division I (1971 edition), except as otherwise provided in this 
part.
    (3) An aluminum main reservoir shall be constructed to withstand at 
least five times its maximum working pressure or 800 p.s.i., whichever 
is greater.
    (4) Each aluminum main reservoir shall have at least two inspection 
openings to permit complete circumferential visual observation of the 
interior surface. On reservoirs less than 18 inches in diameter, the 
size of each inspection opening shall be at least that of 1\1/2\-inch 
threaded iron pipe, and on reservoirs 18 or more inches in diameter, the 
size of each opening shall be at least that of 2-inch threaded iron 
pipe.
    (b) The following publications, which contain the industry standards 
incorporated by reference in paragraph (a) of this section, may be 
obtained from the

[[Page 314]]

publishers and are also on file in the Office of Safety of the Federal 
Railroad Administration, Washington, DC 20590. Sections II and VIII of 
the ``ASME Boiler and Pressure Vessel Code'' (1971 edition) are 
published by the American Society of Mechanical Engineers, United 
Engineering Center, 345 East 47th Street, New York, New York 10017.