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Atomic Power Station 1 Obninsk nuclear power plant

Retired Russia
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)
ModelAM-1
Size classLarge
CoolantLight water
ModeratorGraphite
Gross capacity6MW
Net capacity (reference)5MW
Net capacity (design)5MW
Thermal output30MWt
Typical enrichment2–2.6% U-235
Ownership & location
SiteAtomic Power Station 1 Obninsk nuclear power plant
Unitnot stated
CountryRussia
OwnerMinistry Of Medium Machine Building Of The USSR (Minsredmash)100%
OperatorMinistry 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.

RosatomUrencoCNNCOrano
Conversion
CamecoCNNCConverDynOranoRosatom
Fabricator capability is recorded against reactor type and model line, not against named units — utilities do not publish fuel contracts.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. 1 Jan 1951Construction start
  2. 6 May 1954First criticality
  3. 27 Jun 1954Grid connection
  4. 1 Dec 1954Commercial operation
  5. 29 Apr 2002Permanent shutdown

Sources