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Wolsong nuclear power plant

Wolsong nuclear power plant is a nuclear power station in South Korea with 3 operating units totalling 1,812 MW gross. The site has 4 units on record in total.

Operating6circle area ∝ site capacity Coastlines, borders and lakes: Natural Earth (1:10 million, public domain), which is generalised, so a coastal plant can sit a couple of kilometres off its true shoreline. Site positions: Global Nuclear Power Tracker.
Units on record
4
Operating
3
Operating capacity
1,812MW

Units

UnitStatusTypeModelGross MWOnline
Unit 2 Operating PHWR CANDU 6 599 1997
Unit 3 Operating PHWR CANDU 6 624 1998
Unit 4 Operating PHWR CANDU 6 589 1999
Unit 1 Retired PHWR CANDU 6 683 1983

Unit by unit

Each unit's rating, type and milestone dates as recorded by the Global Nuclear Power Tracker, with any correction we made to it. A dash or "not disclosed" means the source does not give the value.

Wolsong nuclear power plant 2 Operating

Reactor typePressurised heavy water reactor (PHWR)
ModelCANDU 6
Size classLarge
Gross capacity599MW
Net capacity569MW
Thermal output2,061MWt
EnrichmentNatural uranium, 0.71% U-235no enrichment required
NSSS vendorAtkinsRéalis (Candu Energy)
OwnerKorea Hydro & Nuclear Power Co100%
OperatorKorea Hydro & Nuclear Power
Construction start25 Sep 1992
First criticality29 Jan 1997
Grid connection1 Apr 1997
Commercial operation1 Jul 1997

Wolsong nuclear power plant 3 Operating

Reactor typePressurised heavy water reactor (PHWR)
ModelCANDU 6
Size classLarge
Gross capacity624MW
Net capacity605MW
Thermal output2,061MWt
EnrichmentNatural uranium, 0.71% U-235no enrichment required
NSSS vendorAtkinsRéalis (Candu Energy)
OwnerKorea Hydro & Nuclear Power Co100%
OperatorKorea Hydro & Nuclear Power
Construction start17 Mar 1994
First criticality19 Feb 1998
Grid connection25 Mar 1998
Commercial operation1 Jul 1998

Wolsong nuclear power plant 4 Operating

Reactor typePressurised heavy water reactor (PHWR)
ModelCANDU 6
Size classLarge
Gross capacity589MW
Net capacity574MW
Thermal output2,061MWt
EnrichmentNatural uranium, 0.71% U-235no enrichment required
NSSS vendorAtkinsRéalis (Candu Energy)
OwnerKorea Hydro & Nuclear Power Co100%
OperatorKorea Hydro & Nuclear Power
Construction start22 Jul 1994
First criticality10 Apr 1999
Grid connection21 May 1999
Commercial operation1 Oct 1999

Wolsong nuclear power plant 1 Retired

Reactor typePressurised heavy water reactor (PHWR)
ModelCANDU 6
Size classLarge
Gross capacity683MW
Net capacity661MW
Thermal output2,061MWt
EnrichmentNatural uranium, 0.71% U-235no enrichment required
NSSS vendorAtkinsRéalis (Candu Energy)
OwnerKorea Hydro & Nuclear Power Co100%
OperatorKorea Hydro & Nuclear Power
Construction start30 Oct 1977
First criticality21 Nov 1982
Grid connection31 Dec 1982
Commercial operation22 Apr 1983
Permanent shutdown24 Dec 2019

Wolsong nuclear power plant in context

By gross operating capacity Wolsong nuclear power plant is the 8th largest of 8 operating nuclear sites in South Korea, holding 7% of the country's operating capacity, and ranks 105th of 172 worldwide.

Its operating units started up between 1997 and 1999; the median unit is 28.0 years old, older than the median of 27.0 in South Korea.

The 4 units with both construction and grid dates on record took 4.0 to 5.2 years (median 4.7) from construction start to grid connection; the median across all reactors connected in the 1990s is 8.0 years.

The nearest other tracked nuclear sites are Shin-Wolsong nuclear power plant (1 km), Saeul nuclear power plant (45 km) and Shin-Kori nuclear power plant (45 km).

3 operating units are rated differently now from their design net capacities: Unit 2 -12.7%, Unit 3 -9.0% and Unit 4 -14.2%.

Build time by unit

UnitConstruction startGrid connectionYearsFleet median, same decade
Unit 1197719825.27.3 (1980s)
Unit 2199219974.58.0 (1990s)
Unit 3199419984.08.0 (1990s)
Unit 4199419994.88.0 (1990s)

Nearest tracked nuclear sites

How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.

Site detail
LocationNorth Gyeongsang, South Korea
Coordinates35.7111, 129.4743
Elevationabout 25 mabove sea level
SettingOn the sea coast, 0.7 km from the water
RegionEastern Asia
Units by status
Operating: 3
Retired: 1

Elevation is read at the listed coordinates from a 30 m terrain model (SRTM 30 m). Two independent models differ by a median of 6 m across our plants and by up to about 40 m on steep or coastal ground, and a point on a shoreline can read as sea level. Distance to the water is measured to a generalised 1:10 million coastline, so a few kilometres or less is not resolved. This is context, not a design-basis or flood-risk figure.

Owners & operators
Owners
Korea Hydro & Nuclear Power Co
Operators
Korea Hydro & Nuclear Power

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Sources

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