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Which risk increases when spent nuclear fuel rods experience prolonged periods of dry storage?

A)Loss of neutron moderation
B)Zircaloy cladding oxidation accelerates
C)Increased fuel assembly criticality
D)Gamma radiation emission drops sharply

💡 Explanation

Zircaloy cladding oxidation accelerates because dry storage increases temperature and the chemical reaction, oxidation, occurs more rapidly, therefore decreasing cladding integrity, rather than reducing the gamma radiation emitted as the fuel decays.

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