Design of Copper Pipe [49 CFR 192.125]

(A)A. Copper pipe used in mains must have a minimum wall thickness of 0.065 inches (1.65 millimeters) and must be hard drawn. [49 CFR 192.125(a)]#

(B)B. Copper pipe used in service lines must have wall thickness not less than that indicated in the following table. [49 CFR 192.125(b)]#

Standard Size Inch (millimeter)#

Nominal O.D. Inch (millimeter)#

Wall Thickness Inch (millimeter)#

Nominal#

Tolerance#

1/2 (13)#

.625 (16)#

0. 040 (1.06)#

0.0035 (0.0889)#

5/8 (16)#

.750 (19)#

0. 042 (1.07)#

0.0035 (0.0889)#

3/4 (19)#

.875 (22)#

0. 045 (1.14)#

0.004 (0.102)#

1 (25)#

1. 125 (29)#

0. 050 (1.27)#

0.004 (0.102)#

1 1/4 (32)#

1. 375 (35)#

0. 055 (1.40)#

0.0045 (0.1143)#

1 1/2 (38)#

1. 625 (41)#

0. 060 (1.52)#

0.0045 (0.1143)#

(C)C. Copper pipe used in mains and service lines may not be used at pressures in excess of 100 psi (689 kPa) gauge. [49 CFR 192.125(c)]#

(D)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 ft3 (6.9/m3) under standard conditions. Standard conditions refers to 60ºF and 14.7 psia (15.6ºC and one atmosphere) of gas. [49 CFR 192.125(d)]#

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:501 et seq.#

HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:223 (April 1983), amended LR 10:515 (July 1984), LR 18:855 (August 1992), LR 27:1539 (September 2001), LR 30:1232 (June 2004).#