---
kind: "section"
citation: "46 C.F.R. § 154.450"
title: "46"
number: "154.450"
heading: "General."
url: "https://uscodex.org/cfr/46/154.450"
---

# §154.450. General.


Independent tanks type C and process pressure vessels must be designed to meet the requirements under [Part 54](/cfr/46/part54.md) of this chapter, except [§ 54.01-40(b)](/cfr/46/54.01-40.md?p=b), and:

- (a) The calculation under [§ 54.01-18 (b)(1)](/cfr/46/54.01-18.md?p=b-1) must also include the design loads determined under [§ 154.406](/cfr/46/154.406.md);
- (b) The calculated tank plating thickness, including any corrosion allowance, must be the minimum thickness without a negative plate tolerance; and
- (c) The minimum tank plating thickness must not be less than:
  - (1) 5mm ( 3/16 in.) for carbon-manganese steel and nickel steel;
  - (2) 3mm ( 1/8 in.) for austenitic steels; or
  - (3) 7mm ( 9/32 in.) for aluminum alloys.

## Notes

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.