Nuclear power station fuel rod safety system

摘要

The safety shrouding system for use in nuclear reactors, in the event of a failure and increase in temps. which could lead to a melt-down, is a container under the fuel rod with an upper layer under the rod which is melted under a given temp. The layer supports the fuel rod and, on a temp. increase above permitted levels, melts and allows the vertical fuel rod to drop into it. The container is of a moderator material which absorbs neutrons, such as graphite, to contain the fuel rod heat without external cooling, without allowing it to melt.