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Ohi nuclear power plant 4

Operating Japan
Gross capacity
1,180MW

Ohi nuclear power plant 4 is a pressurised water reactor unit at Ohi nuclear power plant in Japan rated at 1,180 MW gross. It is operating. Commercial operation began 2 Feb 1993.

Specification
Reactor type Pressurised water reactor (PWR)
ModelM (4-loop)
Size classLarge
CoolantLight water
ModeratorLight water
Gross capacity1,180MW
Net capacity (reference)1,127MW
Net capacity (design)1,127MW
Thermal output3,423MWt
Typical enrichment3–5% U-235
Ownership & location
SiteOhi nuclear power plant
Unit4
CountryJapan
OwnerKansai Electric Power Co100%
OperatorKansai Electric Power
Coordinates 35.5424, 135.6544
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
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Fabricator capability is recorded against reactor type and model line, not against named units — utilities do not publish fuel contracts.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. 13 Jun 1988Construction start
  2. 28 May 1992First criticality
  3. 19 Jun 1992Grid connection
  4. 2 Feb 1993Commercial operation

Other units at Ohi nuclear power plant

UnitStatusGross MW
Ohi nuclear power plant 1 Retired 1,175
Ohi nuclear power plant 2 Retired 1,175
Ohi nuclear power plant 3 Operating 1,180

Other M (4-loop) units

5 units worldwide share this model designation.

UnitCountryStatusGross MW
Genkai nuclear power plant 3 Japan Operating 1,180
Genkai nuclear power plant 4 Japan Operating 1,180
Ohi nuclear power plant 3 Japan Operating 1,180
Tsuruga nuclear power plant 2 Japan Mothballed 1,160

Sources