UTTDO TClctors. 48. Which of the following is NOT true about spent nuclear react

Question

UTTDO TClctors. 48. Which of the following is NOT true about spent nuclear reactor fuel? A.It can be reprocessed to extract plutonium. B. If piled together, critical mass will be obtained and it will explode. C.lt must be isolated from the environment for tens of thousands of years D.It is stored in'swimming pools' at the reactor sie until it is cooi enough for dry storage 49. Which of the following is NOT one of the inherent safety features of a CANDU reacto:? solid graphite moderator B. online refueling

Explanation / Answer

When piled together, critical mass is obtained and will explode is not true in the case of spent nuclear reactor fuel. This is becauswe spent nuclear reactor fuel are used fuel that are irradiated in a nuclear reactor.    

Nuclear reprocessing technology is available to recover plutonium from spent nuclear reactor fuel.

Some of the radioactive elements have long half lives, for example 239Pu has a half life of approximately 24,000 years. So it must be isolated for tens of thousands of years.

The spent nuclear reactor fuel is stored in swimming pool first and after 3-6 years only it is transfered for dry cask storage or reprocessing.

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