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First criticality

The reactor first sustained a chain reaction, normally at very low power for physics tests. It is the first proof that the built core behaves as designed, not the start of power production: raising power, grid connection and commercial operation follow, often months later. Reaching criticality is the normal way a reactor starts, not an accident.

Vocabulary id
regstage:first-criticality
Scheme
Regulatory stages
Records using it
1

Recorded against 1

See licensing for the docket anchor behind each one.

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