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Zorluk: OrtaDefense and Nuclear Technology

Consider the following statements regarding India's Three-Stage Nuclear Power Programme:

1. Stage I utilizes Pressurised Heavy Water Reactors (PHWRs) fueled by natural uranium.
2. Stage II involves Fast Breeder Reactors (FBRs) designed to use plutonium derived from Stage I to breed fissile material from thorium.
3. Stage III envisions Advanced Heavy Water Reactors (AHWRs) fueled primarily by Uranium-235.

Which of the statements given above is/are correct?

  1. 1 and 2 onlyCevap
  2. B
    1 and 3 only
  3. C
    2 and 3 only
  4. D
    1, 2 and 3

Cevap

1 and 2 only
The statements describing Stage I (PHWRs utilizing natural uranium) and Stage II (Fast Breeder Reactors converting Thorium to fissile material) are factually accurate. The third statement is incorrect because Stage III is designed around the Thorium and Uranium-233 fuel cycle, not Uranium-235.

Adım Adım Çözüm

1
Evaluate Statement 1 regarding Stage I reactors and fuel.
Statement 1 is correct. Stage I uses Pressurised Heavy Water Reactors (PHWRs) fueled by natural uranium, which produces electricity and fissile Plutonium-239 as a byproduct.
Natural uranium primarily consists of Uranium-238, which transmutes into Plutonium-239 during reactor operations.
2
Evaluate Statement 2 regarding Stage II reactors and fuel breeding.
Statement 2 is correct. Stage II employs Fast Breeder Reactors (FBRs) fueled by Plutonium-239 with a Thorium-232 blanket to breed Uranium-233.
Fast Breeder Reactors produce more fissile material than they consume, enabling the transition to thorium-based reactors.
3
Evaluate Statement 3 regarding Stage III reactor fuel composition.
Statement 3 is incorrect. Stage III utilizes Advanced Heavy Water Reactors (AHWRs) based on the Thorium-232 and Uranium-233 fuel cycle, not Uranium-235.
India possesses vast reserves of Thorium, making Uranium-233 (bred from Thorium) the target fuel for Stage III rather than rare imported Uranium-235.

Anahtar Kavram

India's Three-Stage Nuclear Power Programme
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Konular

Defense and Nuclear Technology

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