NNRA e-Library
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http://elibrary.nnra.gov.ng/jspui/handle/123456789/553| Title: | Nuclear Fuel Technology |
| Authors: | Sweng-Woong, Woo |
| Keywords: | Heat Radioactive material Radioactive decay Uranium |
| Issue Date: | 2020 |
| Publisher: | NNRA Library |
| Description: | Nuclear fuel is material used in nuclear power stations to produce heat to power turbines. Heat is created when nuclear fuel undergoes nuclear fission. Most nuclear fuels contain heavy fissile actinide elements that are capable of undergoing and sustaining nuclear fission. The three most relevant fissile isotopes are uranium-233, uranium-235 and plutonium-239. When the unstable nuclei of these atoms are hit by a slow-moving neutron, they split, creating two daughter nuclei and two or three more neutrons. These neutrons then go on to split more nuclei. This creates a self-sustaining chain reaction that is controlled in a nuclear reactor, or uncontrolled in a nuclear weapon. The processes involved in mining, refining, purifying, using, and disposing of nuclear fuel are collectively known as the nuclear fuel cycle. Not all types of nuclear fuels create power from nuclear fission; plutonium-238 and some other elements are used to produce small amounts of nuclear power by radioactive decay in radioisotope thermoelectric generators and other types of atomic batteries. Nuclear fuel has the highest energy density of all practical fuel sources. Special Nuclear Material consists of plutonium, uranium-233 or uranium with U233 or U235 content greater than that found in nature (i.e., >0.71% U235) Source Material is thorium or uranium with a U235 content equal to or less than that found in nature (i.e., ≤ 0.71% U235) Byproduct Material, in general, is radioactive material other than source or special nuclear material. Specifically, by-product material is (a) isotopes produced or created in a nuclear reactor; (b) the tailings and waste produced by extracting or concentrating uranium or thorium from an ore processed primarily for its source material content; (c) discrete sources of radium-226 and (d) discrete sources of naturally occurring or accelerator-produced isotopes that pose a threat equal to or greater than a discrete source of radium-226. Radium is a radioactive substance found in nature. Radium is produced by the radioactive decay of uranium. The intensity of radiation from radioactive materials decreases over time. The time required for the intensity to decrease by one-half is referred to as the half-life. Fuel production in Nuclear fuel technology was also discussed in this presentation. |
| URI: | http://elibrary.nnra.gov.ng/jspui/handle/123456789/553 |
| Appears in Collections: | Training Courses of BPTC |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Nuclear Fuel Technology.pdf | 1.96 MB | Adobe PDF | View/Open |
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