[Code of Federal Regulations]
[Title 49, Volume 3]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR192.125]

[Page 39-40]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                       TRANSPORTATION (CONTINUED)
 
PART 192--TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM 
FEDERAL SAFETY STANDARDS--Table of Contents
 
                         Subpart C--Pipe Design
 
Sec. 192.125  Design of copper pipe.

    (a) Copper pipe used in mains must have a minimum wall thickness of 
0.065 inches (1.65 millimeters) and must be hard drawn.
    (b) Copper pipe used in service lines must have wall thickness not 
less than that indicated in the following table:

------------------------------------------------------------------------
                                        Wall thickness inch (millimeter)
Standard size inch   Nominal O.D. inch ---------------------------------
   (millimeter)        (millimeter)         Nominal         Tolerance
------------------------------------------------------------------------
    \1/2\ (13)           .625 (16)       .040 (1.06)     .0035 (.0889)
    \5/8\ (16)           .750 (19)       .042 (1.07)     .0035 (.0889)
    \3/4\ (19)           .875 (22)       .045 (1.14)       .004 (.102)
        1 (25)          1.125 (29)       .050 (1.27)       .004 (.102)
   1\1/4\ (32)          1.375 (35)       .055 (1.40)     .0045 (.1143)
   1\1/2\ (38)          1.625 (41)       .060 (1.52)     .0045 (.1143)
------------------------------------------------------------------------


[[Page 40]]

    (c) Copper pipe used in mains and service lines may not be used at 
pressures in excess of 100 p.s.i. (689 kPa) gage.
    (d) Copper pipe that does not have an internal corrosion resistant 
lining may not be used to carry gas that has an average hydrogen sulfide 
content of more than 0.3 grains/100 ft\3\ (6.9/m\3\) under standard 
conditions. Standard conditions refers to 60F and 14.7 
psia (15.6C and one atmosphere) of gas.

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-62, 54 FR 5628, 
Feb. 6, 1989; Amdt. 192-85, 63 FR 37502, July 13, 1998]

    Effective Date Note: By Amdt. 192-93, 68 FR 53900, Sept. 15, 2003, 
Sec. 192.123 was amended by removing the second sentence in paragraph 
(b)(2)(i), effective October 15, 2003.