GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ceramics
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Zircalloy
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Cadmium
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Stainless steel
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Detailed explanation-1: -Which of the following is not used as a nuclear fuel cladding material? Explanation: Cadmium is not used as a nuclear fuel cladding material.
Detailed explanation-2: -Thus, cadmium or boron rods are inserted into nuclear fuel in a nuclear reactor.
Detailed explanation-3: -The most common nuclear fuels are uranium – 235 (235U) and plutonium-239(239Pu). Thorium is more abundant in nature than uranium. Thorium can be used as a nuclear fuel through breeding to uranium-233 (U-233). Lead is not used as a nuclear fuel.
Detailed explanation-4: -The thin-walled metal tube that forms the outer jacket of a nuclear fuel rod. It prevents corrosion of the fuel by the coolant and the release of fission products into the coolant. Aluminum, stainless steel, and zirconium alloys are common cladding materials.
Detailed explanation-5: -Pellets / tablets of UO2 are used as fuel for PHWR & BWR nuclear reactors. In the reactors, heat generated in these pellets has to be taken out by the coolant water. To avoid the contact of UO2 with the coolant water, these pellets are filled inside sealed zirconium alloy tubes called fuel cladding to form fuel rods.