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46 C.F.R. § 154.450   General.

Title 46 - Shipping

Title 46: Shipping
PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES
Subpart C—Design, Construction and Equipment
Independent Tank Type C and Process Pressure Vessels

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§ 154.450   General.

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:

(a) The calculation under §54.01–18 (b)(1) must also include the design loads determined under §154.406;

(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.

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