[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: 49CFR179.100-18]

[Page 1028]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 179_SPECIFICATIONS FOR TANK CARS--Table of Contents
 
 Subpart C_Specifications for Pressure Tank Car Tanks (Classes DOT-105, 
                         109, 112, 114 and 120)
 
Sec. 179.100-18  Tests of tanks.

    (a) Each tank shall be tested by completely filling tank and manway 
nozzle with water or other liquid having similar viscosity, at a 
temperature which shall not exceed 100 [deg]F during the test; and 
applying the pressure prescribed in Sec. 179.101. The tank shall hold 
the prescribed pressure for at least 10 minutes without leakage or 
evidence of distress.
    (b) Insulated tanks shall be tested before insulation is applied.
    (c) Caulking of welded joints to stop leaks developed during the 
foregoing test is prohibited. Repairs in welded joints shall be made as 
prescribed in AAR Specifications for Tank Cars, appendix W (IBR, see 
Sec. 171.7 of this subchapter).
    (d) Testing of exterior heaters is not a specification requirement.

[29 FR 18995, Dec. 29, 1964. Redesignated at 32 FR 5606, Apr. 5, 1967; 
66 FR 45186, Aug. 28, 2001; 68 FR 75760, Dec. 31, 2003]