Which statement about unspent fuel and radiation is accurate?

Which statement about unspent fuel and radiation is accurate?

• A. Unspent fuel is completely free of radioactivity
• B. Unspent fuel can still emit radiation from its stored radioisotopes
• C. Unspent fuel is always in a sealed container
• D. Unspent fuel never emits any radiation

Answer: (B)

Unspent fuel still contains radioactive isotopes and will emit radiation from them. Fresh uranium fuel has uranium-235 and uranium-238, along with their decay products, which produce alpha, beta, and gamma radiation even before the fuel is used. This is why it’s handled with shielding and monitoring. It is not free of radioactivity, and it can emit radiation despite being stored; the idea that it never emits radiation or that it is always completely free of radioactivity is incorrect, and while containers are used for safety, they do not eliminate the emission.

Unspent fuel still contains radioactive isotopes and will emit radiation from them. Fresh uranium fuel has uranium-235 and uranium-238, along with their decay products, which produce alpha, beta, and gamma radiation even before the fuel is used. This is why it’s handled with shielding and monitoring. It is not free of radioactivity, and it can emit radiation despite being stored; the idea that it never emits radiation or that it is always completely free of radioactivity is incorrect, and while containers are used for safety, they do not eliminate the emission.