CEA Noise & Radiation Pollution Control Flashcards
6 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CEA Noise & Radiation Pollution Control flashcards as text
What does 'ALARA' stand for in the context of radiation protection?
Answer: As Low As Reasonably Achievable
ALARA (As Low As Reasonably Achievable) is the guiding principle for minimizing radiation exposure to workers and the public.
Which measurement metric is commonly used in community noise assessments to account for nighttime noise sensitivity?
Answer: Day-Night Average Sound Level (Ldn)
The Day-Night Average Sound Level (Ldn) adds a 10 dB penalty to nighttime noise (10 PM–7 AM) to account for increased community sensitivity.
What federal limit does the NRC set for annual radiation dose to members of the public from licensed nuclear operations?
Answer: 100 mrem/year
The NRC limits annual radiation dose to members of the public from licensed operations to 100 mrem (1 mSv) per year.
Which type of shielding material is most effective for blocking gamma radiation?
Answer: Lead or dense concrete
Lead and dense concrete are the most effective shielding materials for attenuating high-energy gamma radiation.
What does an environmental auditor review when assessing a facility's compliance with noise ordinances?
Answer: Monitoring records, complaint logs, and sound measurement data
Compliance review for noise ordinances requires examining sound monitoring records, neighbor complaint logs, and measured dB levels at property boundaries.
Which radioactive material is most commonly associated with naturally occurring radioactive material (NORM) contamination at oil and gas sites in the U.S.?
Answer: Radium-226 and Radium-228
Radium-226 and Radium-228 are the primary NORM isotopes found in oil and gas production scale, pipe scale, and produced water.