Section 8 Spherical shell/shell sections subject to external pressure
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Construction & Classification of Submersibles & Diving Systems, July 2022 - Part 3 Pressure Chambers - Chapter 1 General - Section 8 Spherical shell/shell sections subject to external pressure

Section 8 Spherical shell/shell sections subject to external pressure

Parent topic: Chapter 1 General

8.1 General

8.1.1 Pressure boundaries are to be checked for external pressure as applicable based on the procedure and allowable stress specified in the applicable pressure vessels design code.
Note It is permitted to use actual minimum material properties extracted from LR approved material certificates instead of specified minimum values specified in codes/standards to derive the allowable design stress for the material concerned. The material should be from an LR approved works and appropriate records are retained of:
  1. The tests made to determine the relevant values corresponding to ultimate tensile strength σu and yield strength σy
  2. The tests made to derive the relevant value corresponding to yield strength at design temperature which can be related to material(s) used in the part(s) of vessel(s) under consideration.
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