core catcher

core catcher

[′kȯr‚kach·ər]
(design engineering)
References in periodicals archive ?
For the advanced reactor, a concept of core catcher is employed to cope with the corium stabilization outside reactor vessel.
Thus, at Novovoronezh-6 NPP there were applied such unique systems as passive heat removal systems and core catcher.
He explained, "These measures include double containment and protection building, passive cooling systems for the reactor unit, a molten core catcher, passive system for fast injection of high pressure boron, extra tanks for long-term supply of borated water to the reactor in a passive way, and the system for inter-containment area passive filtration, a closed water withdrawal system for service water for an NPP (which is actually a breakwater).
Besides the control rods, the Kundankulum Plant has uniquely implemented the latest technology in this domain - The Core Catcher. This is basically an underlying structure with Gadolium oxide which would "catch the neutrons" in the event of a highly unlikely meltdown.
The core catcher aims at protecting the integrity of a reactor containment building from corium when a core is molten and the molten corium leaks out of the reactor vessel.
A core catcher allows passive collection and retention of the molten core should the reactor vessel fail in the event of a core melt, while digital technology and a computerised control room improves the protection system.