Analysis on Pipe Rupture of Steam Condensing Line at Hamaoka-1, (I) Accumulation of Non-condensable Gas in a Pipe

Experimental and numerical analysis of dynamic rupture of steel pipes under internal high-speed moving pressures

“…It was reported that in the former case the sections of steel steam pipes were fragmented due to combustion of hydrogeneoxygen mixtures created by radiolysis [24]. One of the most important questions that arose during the accident investigation was whether the type of accidental combustion can be deduced from the fracture patterns.…”

Review of thermal-hydraulic researches in severe accidents in light water reactors

“…Analyses were made on the hydrogen explosion in the Hamaoka Nuclear Power Station Unit-1 [43,44]. A pipe rupture occurred in the steam condensing line of the residual heat removal system.…”

“…This code is used for MCRA [3], coolability analysis of debris [51,52], analysis of ISP No. 45, QUENCH06 Test at FZK [49], analysis of core degradation and fission products release [8], verification for flow analysis capability in the model of three-dimensional natural convection with simultaneous spreading, melting, and solidification for the debris [6,7], and analysis of hydrogen explosion in the Hamaoka Nuclear Power Station [43,44].…”

Finite Element Analysis of Deformation and Fracture of Cylindrical Tubes under Internal Moving Pressures

“…There was no report in the open literature about confined crack growth in tubes under gaseous detonation, prior to the experimental study reported by Chao and Shepherd (2005). Their study was primarily motivated by accidents like those occurred in the nuclear power plants in Japan (Naitoh et al, 2003) and Germany in 2001. In both incidents, sections of steel steam pipes were fragmented due to combustion of hydrogen-oxygen mixtures created by radiolysis.…”