CANDU X

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CANDU X

• Hussam Khartabil
• GenIV Information Exchange Meeting
• April 29-30, 2003

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CANDU X Main Safety Feature

• Separation between moderator and coolant.
• Replace pumped moderator cooling loop with
  passive loop.
• Passive loop can be used under normal and
  accident conditions.
• Key projects
• High Efficiency Channel (HEC) with internal
  insulation.
• Flashing-driven moderator cooling loop.

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• High Efficiency Channel (HEC) is key technology
  for CANDU X.
• Internal insulation (eliminates CT and annulus
  gas system).
• Allows the use of passive moderator cooling under
  normal and upset conditions.
• Potential walk-away safety when combined with
  Passive moderator cooling.

Pressure Tube
Liner
Porous Insulator
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• Fuel channel ceramic insulator tests ongoing at
  SC conditions.
• Feasibility study to add natural circulation loop
  completed.

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• Test loop designed and materials purchased.
• Will be used to study scaling and allow the
  design of a prototype loop for CX.

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Other Projects

• Heat transfer tests using CO2 at SC conditions.
• Engineering economics.
• Fuel Handling.
• Fuel bundle design/fuel cycles.
• Materials.

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