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Radioactive Waste Management & Disposal Flashcards

7 cards from real NRRPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Under 10 CFR Part 61, low-level radioactive waste (LLW) is divided into how many disposal classes?

    Answer: Three classes: A, B, and C

    10 CFR Part 61 establishes three classes—A, B, and C—based on radionuclide concentrations and required isolation periods.

  2. Which federal law established the framework requiring states to develop compacts for low-level radioactive waste disposal?

    Answer: Low-Level Radioactive Waste Policy Amendments Act of 1985

    The Low-Level Radioactive Waste Policy Amendments Act of 1985 made states responsible for LLW generated within their borders and encouraged interstate compacts.

  3. What is the definition of 'mixed waste' in radioactive waste management?

    Answer: Waste that is both radioactive and hazardous under RCRA

    Mixed waste contains both radioactive material regulated under the Atomic Energy Act and hazardous waste regulated under the Resource Conservation and Recovery Act (RCRA).

  4. Which facility is specifically designed for the disposal of transuranic (TRU) waste from US defense activities?

    Answer: Waste Isolation Pilot Plant (WIPP)

    The Waste Isolation Pilot Plant (WIPP) in New Mexico is the only operating deep geological repository in the US, specifically for defense TRU waste.

  5. What activity concentration defines transuranic (TRU) waste in the US?

    Answer: Greater than 100 nCi/g of TRU radionuclides

    TRU waste is defined as waste containing more than 100 nCi/g of alpha-emitting TRU isotopes with half-lives greater than 20 years.

  6. Under 10 CFR Part 61, which LLW class has the most stringent disposal requirements and longest required isolation period?

    Answer: Class C

    Class C LLW has the highest radionuclide concentrations and requires deeper disposal with greater intruder barriers for a 500-year isolation period.

  7. What is the primary purpose of waste characterization in radioactive waste management?

    Answer: To identify radionuclides and quantities to ensure proper classification and disposal

    Waste characterization identifies the radionuclide inventory, activity levels, and physical/chemical properties needed to classify waste and select the correct disposal pathway.