StacksVerified U.S. regulatory reference

46 CFR §154.450

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Independent tanks type C and process pressure vessels must be designed to meet the requirements under Part 54 of this chapter, except § 54.01-40(b), and:
  1. (a)The calculation under § 54.01-18 (b)(1) must also include the design loads determined under § 154.406;
  2. (b)The calculated tank plating thickness, including any corrosion allowance, must be the minimum thickness without a negative plate tolerance; and
  3. (c)The minimum tank plating thickness must not be less than:
    1. (1)5mm ( 3/16 in.) for carbon-manganese steel and nickel steel;
    2. (2)3mm ( 1/8 in.) for austenitic steels; or
    3. (3)7mm ( 9/32 in.) for aluminum alloys.