High-level waste
High-level waste
High-level waste (HLW) is a type of nuclear waste produced by nuclear reactors. It is characterized by its high levels of radioactivity.
Pronunciation
- High-level waste: /ˈhaɪˈlɛvəl weɪst/
Etymology
The term "high-level waste" is derived from the high levels of radioactivity that this type of waste possesses. The term was first used in the mid-20th century, coinciding with the advent of nuclear power.
Definition
High-level waste is a byproduct of the nuclear reactions that occur in nuclear reactors. It is highly radioactive and requires careful management and disposal to protect human health and the environment. High-level waste includes used nuclear fuel and waste materials from the reprocessing of used nuclear fuel.
Related Terms
Disposal
The disposal of high-level waste is a complex and challenging issue. It typically involves storing the waste in deep geological repositories, where it is isolated from the environment for thousands of years. The process of selecting suitable sites for these repositories, and the technology used to store the waste, are subjects of ongoing research and debate.
See Also
External links
- Medical encyclopedia article on High-level waste
- Wikipedia's article - High-level waste
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