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Disadvantages of CANDU

Subject : Power Plant Engineering

Topic: Chap 5- Nuclear Power Plants

Difficulty: Medium

1 Answer
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  1. The cost of heavy water is extremely high (Rs. 300/kg).
  2. The leakage is a major problem as there are two mechanically sealed closures per fuel channel. Canadian designs generally are based or recovering high proportion of heavy water leakages as absolute leak-tightness cannot be assured.
  3. Very high standard of design, manufacture inspection and maintenance are required
  4. The power density is considerably low (9.7 kW/litre) compared with PWR and BWR, therefore, the reactor size is extremely large
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