---
kind: "section"
citation: "46 C.F.R. § 64.17"
title: "46"
number: "64.17"
heading: "Minimum tank thickness."
url: "https://uscodex.org/cfr/46/64.17"
---

# §64.17. Minimum tank thickness.

- (a) **Except as allowed in paragraph (b) of this section, a tank with a diameter of—**
  - (1) 6 feet or less must have a shell and head of 3/16 inch thickness or more; or
  - (2) More than 6 feet must have a shell and head of 1/4 inch thickness or more.
- (b) If the tank has additional framework to guard against accidental puncturing of the tank, the shell and head thickness must be 1/8 inch or more.

## Notes

### Authority

Authority: 46 U.S.C. 3306, 3703; 49 U.S.C. App. 1804; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.3.

### Source

Source: CGD 73-172, 39 FR 22950, June 25, 1974, unless otherwise noted.