reactor core


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reactor core

n.
The central part of a nuclear reactor where atomic fission occurs.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Release date- 09082019 - An International Atomic Energy Agency (IAEA) team of experts said the operator of a research reactor in Nigeria has demonstrated a high commitment to enhancing safety following the conversion of the reactor core to use low enriched uranium (LEU) as fuel instead of high enriched uranium (HEU).
The conversion of the reactor core was successfully completed in August 2017 with a total expenditure of USD 22,000,000.00 and over 90% of the expenditure provided by US Government and IAEA whilst Ghana Government provided the needed security.
As a result, direct emissions from the radioactive reactor core transmitted into the atmosphere.
The Fluid Reactor is enabled by a novel reactor core element which allows the efficient transfer of gases into and out of liquids.
A generation is essentially the lifetime of a neutron, in a finite system, the effective multiplication factor is denoted as [k.sub.effective] or [k.sub.eff], which is used to determine the stability of a nuclear reactor core. When a system is critical, it maintains a steady-state chain reaction of nuclear fissioning, and [k.sub.eff] = 1.
An EDF spokeswoman said: "As part of the normal ageing process, we expect to see defects occurring in some of the graphite blocks that make up the reactor core of our plant.
In July 1959, a partial meltdown occurred at Sodium Reactor Experiment in Los Angeles, California, due to cooling flow blockage that caused overheating of the reactor core.
This provided needed experience and data on casting, machining and material characteristics of the reactor core.
Control volume 134 simulates the upper plenum of the reactor core, the coolant flow of which comes from the annular pipes.
So they attached Blu Tack to the end of a long, flexible rod and inserted it nearly 10m into the reactor core - saving the cost of developing a specialist tool for the job.

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