§179.500-3. Type and general requirements.
49 C.F.R. § 179.500-3
Tanks built under this specification shall be hollow forged or drawn in one piece. Forged tanks shall be machined inside and outside before ends are necked-down and, after necking-down, the ends shall be machined to size on the ends and outside diameter. Machining not necessary on inside or outside of seamless steel tubing, but required on ends after necking-down.
For tanks made in foreign countries, chemical analysis of material and all tests as specified must be carried out within the limits of the United States under supervision of a competent and disinterested inspector; in addition to which, provisions in § 179.500-18 (b) and (c) shall be carried out at the point of manufacture by a recognized inspection bureau with principal office in the United States.
The term “marked end” and “marked test pressure” used throughout this specification are defined as follows:
“Marked end” is that end of the tank on which marks prescribed in § 179.500-17 are stamped.
“Marked test pressure” is that pressure in psig which is indicated by the figures substituted for the ** in the marking DOT-107A ** stamped on the marked end of tank.
The gas pressure at 130 °F in the tank shall not exceed 7/10 of the marked test pressure of the tank.
Notes, amendments, and revision history
Amendments
[Amdt. 179-32, 48 FR 27708, June 16, 1983, as amended at 66 FR 45186, 45391, Aug. 28, 2001]
Source
Source: Amdt. 179-32, 48 FR 27708, June 16, 1983, unless otherwise noted.
Authority
Authority: 49 U.S.C. 5101-5128; 49 CFR 1.81 and 1.97.
Source
Source: 29 FR 18995, Dec. 29, 1964, unless otherwise noted. Redesignated at 32 FR 5606, Apr. 5, 1967.
Amendments
[Amdt. 179-32, 48 FR 27708, June 16, 1983, as amended at 66 FR 45186, 45391, Aug. 28, 2001]