---
kind: "section"
citation: "49 C.F.R. § 179.220-3"
title: "49"
number: "179.220-3"
heading: "Type."
url: "https://uscodex.org/cfr/49/179.220-3"
---

# §179.220-3. Type.

- (a) Tanks built under these specifications must consist of an inner container, a support system for the inner container, and an outer shell.
- (b) The inner container must be a fusion welded tank of circular cross section with formed heads designed convex outward and must have a manway on top of the tank as prescribed herein. When the inner container is divided into compartments, each compartment must be considered a separate container.
- (c) The outer shell must be a fusion welded tank with formed heads designed convex outward.

## Notes

### Amendments

[Amdt. 179-9, 36 FR 21340, Nov. 6, 1971]

### 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. 179-9, 36 FR 21340, Nov. 6, 1971]