Bangladesh's Rooppur 1 reaches criticality

· Climate · Bangladesh

Unit 1 of Bangladesh's Rooppur Nuclear Power Plant achieved criticality, a self-sustaining nuclear reaction, at 15:34 on Sunday, 11 October. Criticality is the key milestone that confirms a reactor's core can sustain a chain reaction, coming after fuel loading and before grid connection and commercial operation. Rooppur is Bangladesh's first nuclear power plant, and reaching this stage moves the country into the small group of nations operating nuclear generation. For the industry, it marks another new-entrant civil nuclear program passing its most closely watched test, and sets the stage for commissioning steps toward supplying electricity to the national grid.

Why it matters：New-entrant nuclear programs reaching criticality show how the reactor vendor pipeline is expanding beyond established markets, a signal for suppliers and for global decarbonisation planning.

Key points

  • Criticality occurred at 15:34 on Sunday, 11 October
  • Rooppur is Bangladesh's first nuclear power plant
  • Criticality precedes grid connection and commercial operation

Sources (original reporting)

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