NRR Naval Research Reactor
NRR Naval Research Reactor, a research reactor (pool) in Washington, DC, United States, with 1 MW of thermal power, operated by US Navy. Decommissioned, first critical in 1956.
It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 14 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 48 pool-type reactors remain in operation today across 28 countries. Its declared uses include materials testing.
- Country
- United States
- City
- Washington, DC
- Type
- Pool
- Thermal power
- 1 MW
- Operator
- US Navy
- Status
- Decommissioned
- First criticality
- 1956
- Purpose
- Materials testing
See also: every research reactor in United States · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026