Coolability and retention of core melt (corium) in the lower head of reactor pressure vessel
(RPV) has been accepted as a severe accident management strategy to maintain the reactor …

Since the reactor pressure vessel (RPV) lower head failure determines the subsequent ex-
vessel accident progression, it is a key issue to understanding the accident progression of …

Multiple uncertainties still exist about the state of the debris in Fukushima Daiichi Nuclear
Power Station (1F). In the past, the attention of the nuclear safety community was focused on …

Severe accident research is the only way to achieve the best possible management in case
such unlikely events eventually happen. Early this century, the Severe Accident Research …

Motivated by understanding of severe accident phenomena, extensive studies have been
conducted to investigate the thermalhydraulics of both debris bed and melt pool which may …

During postulated severe accidents of LWR, a debris bed may form in the lower head of the
RPV due to FCI, and re-melt into a molten pool if the debris bed is uncoolable. To predict the …

抄録 原子炉過酷事故解析などによる福島第一原子力発電所の事故進展解析では,
特に原子炉圧力容器 (RPV) 下部ヘッドの破損から燃料デブリのペデスタル底部への流出に関して …