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Yonggwang Nuclear Power Complex

Other Name: 영광 원자력발전소; Yeonggwang Nuclear Power Complex; Yŏnggwang Nuclear Power Complex
Location: Yeonggwang-gun, South Jeolla Province, South Korea
Subordinate To: Korea Hydro & Nuclear Power Co., Ltd. (한국수력원자력주)
Size: 6 power reactors
Facility Status: All units operational

The Yonggwang Nuclear Power Complex has six operational units of three types.

Yonggwang-1 and -2 are Westinghouse pressurized light water reactors (PWRs) constructed under the second phase of South Korea's nuclear power program called "the component approach," in which foreign firms were contracted for the design and provision of main components, while domestic firms were subcontracted for auxiliary components. [1] In addition, to increase self-sufficiency in nuclear power plant construction and technology, the Korea Electric Power Corporation (KEPCO) expanded its participation by leading the overall construction project with assistance from foreign firms, and allowing Korean firms to manage site construction. [2]

Yonggwang-3 and -4 are CE System 80 (2-loop) steam supply system PWRs constructed under the third phase of South Korea's nuclear power program, which called for self-reliance in nuclear technology. Under this phase, South Korea planned to standardize the design of nuclear power plants and achieve technological self-sufficiency. [3] In order to meet these goals, the Korea Electric Power Corporation (KEPCO) concluded a ten-year agreement with ABB-CE (Switzerland) in 1987 for the transfer of documentation and computer codes, the training of Korean engineers, participation in research and development programs, and consultation. [4] Beginning with the construction of Yonggwang-3, KEPCO used Korean firms as primary contractors for the provision of major equipment and engineering services. Foreign firms serving as subcontractors were selected through competitive bidding, and were required to accept a technology transfer agreement as part of the contract. Yonggwang-3 and -4 served as the model for the Korean Standard Nuclear Power (KSNP). [5]

Yonggwang-5 and -6 are based on the design of the Ulchin-3 reactor, which was the first Korean Standard Nuclear Power Plant, with several updates and modifications. [6] They are 1000 MW(e) pressurized light water reactor (PWR) two-loop plants, with an expected plant-life of 40 years. [7]

Yonggwang-1 Nuclear Power Reactor

Other Names: 영광 원자력발전소 1호기; Yŏnggwang-1; Yeonggwang-1
Location: Yeonggwang-gun, South Jeolla Province, South Korea
Subordinate to: Korea Hydro & Nuclear Power Co., Ltd. (한국수력원자력주)
Size: 953 MW(e) pressurized light water reactor (PWR)
Status: Operational

Description: Yonggwang-1 is South Korea's seventh nuclear power reactor. It is a 950 MW(e) Westinghouse pressurized light water reactor. [8] Westinghouse provided the reactor and turbine generator. Korea Heavy Industries and Construction Corporation, in cooperation with U.S.-based Westinghouse, provided the main components, and Bechtel and the Korea Electric Technology Corporation provided engineering and design services. South Korean firms provided 34.9 percent of the manufactured equipment for the reactor. [9] Construction for Yonggwang-1 began in December 1981, and the reactor commenced commercial operations in September 1986. [10]


Yonggwang-2 Nuclear Power Reactor

Other Names: 영광 원자력발전소 2호기; Yŏnggwang-2; Yeonggwang-2
Location: Yeonggwang-gun, South Jeolla Province, South Korea
Subordinate to: Korea Hydro & Nuclear Power Co., Ltd. (한국수력원자력주)
Size: 947 MW(e) pressurized light water reactor (PWR)
Status: Operational

Description: Yonggwang-2 is South Korea's eighth nuclear power reactor. Like Yonggwang-1, it is a 950 MW(e) 3-loop Westinghouse PWR, and has a virtually identical design. [11] Construction for Yonggwang-2 began in December 1981, and the reactor commenced commercial operations in June 1987. [12]

Yonggwang-3 Nuclear Power Reactor

Other Names: 영광 원자력발전소 3호기; Yŏnggwang-3; Yeonggwang-3
Location: Yeonggwang-gun, South Jeolla Province, South Korea
Subordinate to: Korea Hydro & Nuclear Power Co., Ltd. (한국수력원자력주)
Size: 997 MW(e) pressurized light water reactor (PWR)
Status: Operational

Description: Yonggwang-3 is South Korea's tenth nuclear power reactor. Yonggwang-3 is a 1000 MW(e) pressurized light water reactor based on the ABB-CE 2-loop System 80 design. Construction for Yonggwang-3 began in December 1989, and the reactor commenced commercial operations in March 1995. [13]

Yonggwang-3 was jointly designed by ABB-CE (Switzerland) and the Korea Power Engineering Company (KOPEC). KOPEC also worked with Sargent & Lundy (U.S.) to provide architect and engineering services. Korea Heavy Industries and Construction Corporation (Hanjung) worked with ABB-CE and GE (U.S.) to provide primary system components. The Korea Atomic Energy Research Institute (KAERI) and Korea Nuclear Fuels, in collaboration with ABB-CE, designed the nuclear steam supply system and initial core design. Hyundai Engineering and Construction Corporation provided construction services. [14]

Yonggwang-3 experienced its first accident on 25 November 2003, when the plant was shut down due to a malfunction in the power supply system. There were no radiation leaks outside of the facility, and the reactor resumed operations following an investigation by the Korea Institute of Nuclear Safety (KINS) on 27 November 2003. [15]

Yonggwang-4 Nuclear Power Reactor

Other Names: 영광 원자력발전소 4호기; Yŏnggwang-4; Yeonggwang-4
Location: Yeonggwang-gun, South Jeolla Province, South Korea
Subordinate to: Korea Hydro & Nuclear Power Co., Ltd. (한국수력원자력주)
Size: 994 MW(e) pressurized light water reactor (PWR)
Status: Operational

Description: Yonggwang-4 is South Korea's eleventh nuclear power reactor. It is a 1000 MW(e) pressurized light water reactor based on the ABB-CE 2-loop System 80 design with technical design and features identical to the Yonggwang-3 nuclear power plant. [16] Construction for Yonggwang-4 began in December 1989, and the reactor commenced commercial operations in January 1996. [17]

Yonggwang-5 Nuclear Power Reactor

Other Names: 영광 원자력발전소 5호기; Yŏnggwang-5; Yeonggwang-5
Location: Yeonggwang-gun, South Jeolla Province, South Korea
Subordinate to: Korea Hydro & Nuclear Power Co., Ltd. (한국수력원자력주)
Size: 988 MW(e) pressurized light water reactor (PWR)
Status: Operational

Description: Yonggwang-5 is a Korean Standard Nuclear Power Plant, with several updates and modifications. It is a 1000 MW(e) pressurized light water reactor (PWR) two-loop plant. Construction began in June 1997, and commercial operation commenced on 21 May 2002. [18] Modifications to the plant included creating redundancy in the nuclear steam supply system (NSSS) control system, which increases the mean time between failures, thus improving safety. [19]

On 27 December 2003, Yonggwang-5 leaked radioactive material amounting to 0.000156 percent of 0.03 millisievert (mSv), less than the standard required to trigger an IAEA investigation. [20]

Yonggwang-6 Nuclear Power Reactor

Other Names: 영광 원자력발전소 6호기; Yŏnggwang-6; Yeonggwang-6
Location: Yeonggwang-gun, South Jeolla Province, South Korea
Subordinate to: Korea Hydro & Nuclear Power Co., Ltd. (한국수력원자력주)
Size: 996 MW(e) pressurized light water reactor (PWR)
Status: Operational

Description: Yonggwang-6 is a Korean Standard Nuclear Power Plant, with several updates and modifications. It is a 1000 MW(e) pressurized light water reactor (PWR) two-loop plant. Construction began in June 1997, and commercial operations commenced on 21 May 2002. [21] Its design is the same as the design for Yonggwang-5. [22]

Sources:
[1] "Nuclear Power in South Korea," World Nuclear Association, 5 January 2011, www.world-nuclear.org; "Yeongwang Nuclear Power Generation," Korea Hydro & Nuclear Power, www.khnp.co.kr/youngkwg.
[2] Regis A. Matzie and Ki In Han, "The Evolutionary Development of Advanced Reactors," The Uranium Institute Twenty Third Annual International Symposium 1998, World Nuclear Association Symposium Proceedings, www.world-nuclear.org.
[3] "Nuclear Power in South Korea," World Nuclear Association, 5 January 2011, www.world-nuclear.org; "Yeongwang Nuclear Power Generation," Korea Hydro & Nuclear Power, www.khnp.co.kr/youngkwg.
[4] "Yeongwang Nuclear Power Generation," Korea Hydro & Nuclear Power, www.khnp.co.kr/youngkwg; "Yonggwang, Republic of Korea," Power, April 1996, in Lexis-Nexis, web.lexis-nexis.com.
[5] An Seung-kyoo, "Evolution of Korea's Nuclear Reactor Designs," The Korea Herald, 19 March 2010, in Lexis-Nexis, web.lexis-nexis.com.
[6] "Nuclear Power in South Korea," World Nuclear Association, 5 January 2011, www.world-nuclear.org.
[7] "Nuclear Power Reactor Details - YONGGWANG-5," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage; "Nuclear Power Reactor Details - YONGGWANG-6," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[8] "Nuclear Power Reactor Details - YONGGWANG-1," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[9] Shin Hochul and Ann MacLachlan, "Korean Strive for Self-Reliance in Nuclear Plant Construction," Nucleonics Week, 19 December 1985, p. 8, in Lexis-Nexis, web.lexis-nexis.com.
[10] "Nuclear Power Reactor Details - YONGGWANG-1," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[11] See Yonggwang-2 entry for further details.
[12] "Nuclear Power Reactor Details - YONGGWANG-2," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[13] "Nuclear Power Reactor Details - YONGGWANG-3," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[14] Wilson Dizard III, "KEPCO's Yonggwang-3 is Commercial as ABB-CE Gains $200-Million Pact," Nucleonics Week, 6 April 1995, p. 1, in Lexis-Nexis, web.lexis-nexis.com.
[15] "S Korea Shuts Down Yonggwang Nuclear Power Plant Due to 'Malfunction'," Yonhap, 25 November 2003, in Lexis-Nexis, web.lexis-nexis.com.
[16] "Nuclear Power in South Korea," World Nuclear Association, 5 January 2011, www.world-nuclear.org.
[17] "Nuclear Power Reactor Details - YONGGWANG-4," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[18] "Nuclear Power Reactor Details - YONGGWANG-5," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[19] Yong Soo Sohn, Seung Ryung Jin, et al., "Power Plant Design: Yonggwang 5 & 6 NSSS Design improvements," Nuclear Engineering International, 31 March 2003, in Lexis-Nexis, web.lexis-nexis.com.
[20] "Radioactive Leak Detected at Yonggwang Power Plant," Korea Times, 30 December 2003, in Lexis-Nexis, web.lexis-nexis.com.
[21] "Nuclear Power Reactor Details - YONGGWANG-6," IAEA Power Reactor Information System (PRIS), www.iaea.org/dbpage.
[22] See Yonggwang-5 entry for further details.

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This material is produced independently for NTI by the James Martin Center for Nonproliferation Studies at the Monterey Institute of International Studies and does not necessarily reflect the opinions of and has not been independently verified by NTI or its directors, officers, employees, or agents.

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