Definition

Noun: * Low-level radioactive waste: A category of radioactive waste consisting of materials that have been contaminated with, or have briefly been exposed to, relatively low levels of radioactivity. This waste does not generate significant heat and typically requires isolation and containment for a period ranging from a few decades to a few hundred years, rather than the millennia required for high-level waste. It often includes items like protective clothing, tools, filters, and materials from medical, research, and industrial applications.

Usage Examples

• Noun:
  • The hospital has strict protocols for the disposal of low-level radioactive waste generated during diagnostic procedures.
  • Decommissioning the research facility will produce a large volume of low-level radioactive waste, such as contaminated concrete and metal.
  • Regulations require that low-level radioactive waste be shipped to licensed disposal facilities.

Advanced Usage

• "Low-level waste (LLW)": This is the common abbreviated form used in technical and regulatory contexts.
  • The site is permitted for the disposal of Class A low-level waste.
• The classification is often subdivided (e.g., Class A, B, C) based on concentration and longevity of radionuclides, determining its disposal requirements.

Variants and Related Words

• High-level radioactive waste (HLW): (noun) Waste with high levels of radioactivity and heat generation, typically spent nuclear fuel or waste from reprocessing, requiring deep geological disposal.
• Intermediate-level radioactive waste (ILW): (noun) Waste with radioactivity levels higher than low-level waste, often requiring shielding during handling and disposal.
• Radioactive waste: (noun) The general term for any material that contains or is contaminated by radionuclides at concentrations greater than clearance levels set by regulators.

Synonyms

• LLW (the standard acronym)
• Low-activity waste (a less formal, descriptive synonym sometimes used in specific contexts)

Related Phrases

• Waste classification: The process of categorizing radioactive waste (e.g., as low-level, intermediate-level, high-level).
  • Proper waste classification is essential for safe disposal.
• Near-surface disposal: The typical method for managing low-level radioactive waste, involving burial in engineered facilities.
  • The low-level radioactive waste was placed in a near-surface disposal vault.

Noun

1. (medicine) radioactive waste consisting of objects that have been briefly exposed to radioactivity (as in certain medical tests)