Definition

Noun: * High-level radioactive waste: Radioactive waste that remains in a nuclear reactor after the nuclear fuel has been consumed. It is characterized by its intense radioactivity and the significant heat it generates, requiring long-term isolation from the biosphere.

Usage

This term is used in technical, scientific, and policy contexts related to nuclear energy, environmental management, and public safety. It specifically refers to the most hazardous category of waste from nuclear fission.

Examples

• The permanent disposal of high-level radioactive waste is a major challenge for the nuclear industry.
• Spent nuclear fuel rods are classified as high-level radioactive waste.
• The facility is designed to safely store high-level radioactive waste for thousands of years.

Advanced Usage

• Policy Context: The term is central to debates on nuclear energy sustainability, often discussed in relation to repositories, long-term storage solutions, and regulatory frameworks.
  • Example: The country's policy on high-level radioactive waste management is under parliamentary review.

Variants and Related Words

• HLRW: A common initialism for "high-level radioactive waste."
• Spent nuclear fuel: Often used synonymously, though technically it is the primary source material for high-level radioactive waste.
• Transuranic waste: A related category of long-lived radioactive waste, often separated from high-level radioactive waste in regulatory definitions.
• Low-level radioactive waste: A contrasting term for less hazardous radioactive waste, such as contaminated protective clothing or tools.

Synonyms

• Spent fuel waste
• Vitrified waste (specifically referring to high-level radioactive waste that has been immobilized in glass for storage)

Related Phrases

• Deep geological repository: A proposed long-term storage solution for high-level radioactive waste.
• Waste isolation: The principle of containing high-level radioactive waste to protect human health and the environment.

Noun

1. radioactive waste that left in a nuclear reactor after the nuclear fuel has been consumed