Strength evaluation of the steam distribution device in case of fuel channel rupture

Abstract

The paper presents transient analysis of the steam distribution device (SDD) subjected to loading in case of fuel channel (FC) rupture. A thermo-hydraulic analysis of the SDD was performed using the state-of-the-art COCOSYS code in order to determine pressure and temperature histories resulting from a FC rupture. The finite element code NEPTUNE was used to evaluate structural integrity of SDD header, of the connection between SDD header and supply pipe and of the connection between SDD header and the vertical vent pipes. Results show that structural integrity of SDD will be maintained during a FC failure.