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A simplified leak-before-break analysis method of pressured pipes

Xi‐Qiao Feng, Shuyan He

Abstract

A simplified analysis method for leak-before-break (LBB) analysis of pressured vessels and pipes in nuclear reactors is introduced. It is based mainly on the linear elastic fracture mechanics. The main procedures of LBB analysis are formulated analytically, which mainly include the calculation of the stress intensity factor, the crack opening area and the leakage rate. This method meets the requirements of national standard and international rules, and is very convenient to be adopted for the LBB analysis of some pressure vessels and piping with simple stress distribution and geometrical shape or for the estimation of LBB features of components.

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Available abstract

Key concepts: Piping, Leak, Structural engineering, Stress intensity factor, Leakage (economics), Pressure vessel, Stress (linguistics), Canalisation