The Hanul Nuclear Power Plant (originally the Uljin NPP Korean: 울진원자력발전소) is a large nuclear power station in the North Gyeongsang Province of South Korea. The facility has six pressurized water reactors (PWRs) with a total installed capacity of 5,881 MW. The first went online in 1988. In the early 2000s it was the third largest operational nuclear power plant in the world and the second largest in South Korea. The plant's name was changed from Uljin to Hanul in 2013.

On 4 May 2012, ground was broken for two new reactors, Shin ("new") Uljin-1 and -2 using APR-1400 reactors.

Fuel loading completed at Shin Hanul 1 in October 2021. Unit 1 achieved first criticality on 22 May 2022, 11 am local time with electricity generation expected to start in June 2022. Unit 2 achieved criticality on 6 December 2023, 6 am local time, with grid connection expected for 20 December 2023.

The APR-1400 is a Generation III PWR design with a gross capacity of 1400 MW. It is the first to use Korean-made components for all critical systems. In 2012, the reactors were expected to cost about 7 trillion won (US$6 billion), and to be completed by 2018.

Reactors

Unit	Type	Capacity (net)	Construction start	Operation start	Notes
Phase I
Hanul-1	France CPI	968 MW	26 Jan 1983	10 Sept 1988
Hanul-2	France CPI	969 MW	5 July 1983	30 Sept 1989
Hanul-3	OPR-1000	997 MW	21 July 1993	11 Aug 1998
Hanul-4	OPR-1000	999 MW	1 Nov 1993	31 Dec 1999
Hanul-5	OPR-1000	998 MW	1 Oct 1999	29 July 2004
Hanul-6	OPR-1000	997 MW	29 Sept 2000	22 Apr 2005
Phase II
Shin Hanul-1	APR-1400	1340 MW	21 July 2012	9 June 2022
Shin Hanul-2	APR-1400	1340 MW	19 June 2013	21 Dec 2023
Shin Hanul-3	APR-1400	1340 MW
Shin Hanul-4	APR-1400	1340 MW

See also

• List of nuclear power stations
• List of power stations in South Korea
• Yeonggwang Nuclear Power Station