Section 2 Cylindrical shells and drums subject to internal pressure
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 5 Main and Auxiliary Machinery - Chapter 11 Other Pressure Vessels - Section 2 Cylindrical shells and drums subject to internal pressure

Section 2 Cylindrical shells and drums subject to internal pressure

Parent topic: Chapter 11 Other Pressure Vessels

2.1 Minimum thickness

2.1.1 The minimum thickness, t, of a cylindrical shell is to be determined by the following formula:

where
t, p, Ri, c = and σ are as defined in Pt 5, Ch 11, 1.2 Definition of symbols
J = the joint factor of the longitudinal joints (expressed as a fraction). See Pt 5, Ch 11, 1.9 Joint factors in the case of seamless shells clear of openings J = 1,0.

2.1.2 The formula in Pt 5, Ch 11, 2.1 Minimum thickness 2.1.1 is applicable only where the resulting thickness does not exceed half the internal radius, i.e. where t is not greater than 0,5 Ri.

2.1.3 Irrespective of the thickness determined by the formula in Pt 5, Ch 11, 2.1 Minimum thickness 2.1.1, t is to be not less than mm, where D i is as defined in Pt 5, Ch 11, 1.2 Definition of symbols. The minimum thickness permitted for vessels manufactured in corrosion resistant steels will be the subject of special consideration.

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