Russia Russia · Electrostal · 55.783, 38.467

Stend-4

Stend-4, a research reactor (critical assembly) in Electrostal, Russia, with 30 W of thermal power, operated by JSC TVEL Fuel Company. Operating, first critical in 1967.

By thermal power it ranks 47th among the 57 research reactors operating in Russia. It went critical 21 years after the first research reactor in Russia, F-1 (1946). It is one of 44 critical assemblies operating worldwide, spread across 12 countries. Its declared uses include teaching and training.

Country
Russia
City
Electrostal
Type
Critical assembly
Thermal power
30 W
Operator
JSC TVEL Fuel Company
Status
Operating
First criticality
1967
Purpose
Teaching, training

Data: IAEA RRDB · updated on Sep 3, 2026

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