S083025 Investigation for Piping Strength on Non Condensable Gas Combustion : Calculation of Pressure on Gas Ignition for Evaluating Piping Strength

Abstract

Piping strength evaluation method on combustion of non-condensable gas (stoichiometric hydrogen/oxygen mixture) accumulated in the piping of boiling water reactor (BWR) has been developed. Detonation pressure of non-condensable gas was evaluated by the detonation calculation, then piping strength was calculated using the pressure obtained by the detonation calculation. In this paper, the calculation methods for evaluating the detonation pressure was developed, and the detonation pressure obtained by the calculation was validated using the results of the detonation experiments. It was confirmed that the detonation calculation agreed with the results of detonation experiments on the straight pipe, elbow, tee joint, and so on.