Atomic Power Station 1 Obninsk nuclear power plant
Gross capacity
6MW
Atomic Power Station 1 Obninsk nuclear power plant is a light water graphite reactor unit at Atomic Power Station 1 Obninsk nuclear power plant in Russia rated at 6 MW gross. It is retired. Commercial operation began 1 Dec 1954.
Specification
| Reactor type | Light water graphite reactor (LWGR) |
|---|---|
| Model | AM-1 |
| Size | Very small20 MWe or less |
| Coolant | Light water |
| Moderator | Graphite |
| Gross capacity | 6MW |
| Net capacity (reference) | 5MW |
| Net capacity (design) | 5MW |
| Thermal output | 30MWt |
| NSSS vendor | not on record |
| Typical enrichment | 2–2.6% U-235 |
Ownership & location
| Site | Atomic Power Station 1 Obninsk nuclear power plant |
|---|---|
| Unit | not stated |
| Country | Russia |
| Owner | Ministry Of Medium Machine Building Of The USSR (Minsredmash)100% |
| Operator | Ministry Of Medium Machine Building Of The USSR (Minsredmash) |
| Coordinates | 55.0890, 36.5912 |
Fuel chain for this unit
Fuel form
Slightly enriched uranium dioxide in pressure tubes
Enrichment
2–2.6% U-235
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units,
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 1 Jan 1951Construction start
- 6 May 1954First criticality
- 27 Jun 1954Grid connection
- 1 Dec 1954Commercial operation
- 29 Apr 2002Permanent shutdown
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-13
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data