Korea Hydro & Nuclear Power (KHNP) hosted a five-day workshop with the International Atomic Energy Agency (IAEA) in Gyeongju, South Korea, to evaluate and strengthen the climate change resilience of nuclear power plant designs. The event, which concluded on May 30, focused on the Site and External Events Design (SEED) framework, specifically reviewing the safety architecture of the Shin Hanul 3 and 4 reactor units.
Strengthening Nuclear Safety Against Climate Change
The workshop brought together eight experts from five different countries to conduct an on-site assessment of South Korean nuclear facilities. According to KHNP, the primary objective was to align domestic design protocols with the IAEA’s latest safety guides and international standards.
By utilizing the IAEA’s SEED program, KHNP is re-evaluating how its plants account for long-term climate projections. This includes analyzing the impact of rising sea levels, increasing seawater temperatures, and the potential for more frequent extreme weather events, such as typhoons and heavy precipitation.
How KHNP Integrates Climate Data into Design
KHNP manages safety by incorporating predictive climate modeling into the entire lifecycle of its power plants. The utility aims to ensure that infrastructure remains stable even as global environmental conditions shift.
During the workshop, KHNP officials shared their current design strategies for the Shin Hanul 3 and 4 units with the international delegation. The company stated that it intends to apply lessons learned from global best practices to further harden its facilities against climate-related risks. Choi Il-kyung, head of the KHNP Construction Business Division, noted that the organization is prioritizing these measures to ensure the long-term reliability of its nuclear infrastructure.
Understanding the IAEA SEED Program
The IAEA’s Site and External Events Design (SEED) service is a technical safety framework used by member states to ensure nuclear facilities are protected against external hazards. These hazards include both natural phenomena, such as earthquakes, floods, and extreme weather, and human-induced events.
The program provides:
- Safety Reviews: Independent assessments of site selection and design criteria.
- Regulatory Support: Guidance on how to implement international safety standards within a national regulatory framework.
- Knowledge Transfer: Opportunities for member states to exchange data on climate adaptation and site-specific risk mitigation.
By hosting this workshop, KHNP sought to confirm that its current safety margins for climate change are not only sufficient for today’s conditions but are also robust enough to withstand future environmental projections as outlined by international nuclear safety benchmarks.
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