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03/11/2019 HYU News > Academics > 이달의연구자

Title

[Excellent R&D] To Stay Safe on Nuclear Power

Professor Jae Moo-sung (Department of Nuclear Engineering)

임지우

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http://www.hanyang.ac.kr/surl/rZFu

Contents
Being a country in the possession of nuclear power plants, we are bound to be under the constant threat of a nuclear accident. The recent research of Professor Jae Moo-sung (Department of Nuclear Engineering) on Multi-Unit Probabilistic Safety Assessment (PSA) Test Regulation Technology Development is a step forward to keep us and our planet safe from a nuclear disaster.
 
Professor Jae Moo-sung (Department of Nuclear Engineering)’s five-year-research on Multi-Unit Probabilistic Safety Assessment (PSA) Test Regulation Technology Development ensures greater safety around multi-unit nuclear plants.

Korea has up to nine nuclear plants in one site, with a massive population living nearby. According to Jae, there are not many countries that have this many nuclear plants in one site as Korea does. For instance, America has a maximum of three plants in one site. Logically, malfunction of these plants could inflict catastrophic damage on those living nearby, which is why a thorough multi-unit risk test is necessary.

Calculating the risk of a nuclear plant consists of three levels. Level 1 involves finding all possible combinations of conditions that could lead to the meltdown of the reactor core. Level 2 calculates the probability of a nuclear reactor containment building being destroyed and leaking radiation. Next, level 3 calculates how much damage the leaked radiation could have on the neighboring population, and the entire country.

On top of these procedures, Jae managed to add a fourth level: calculating the risk of the multi-unit nuclear plants. The modeling Jae invented calculates whether a particular multi-unit plant meets the appropriate safety target level. This calculation allows for risk monitoring and deducing the optimum number of plants. In other words, it helps evaluate which part of the plant needs risk management, and finds out the maximum number of nuclear plants that can be located per site. With help from Jae’s modeling, the multi-unit plants could be up to 10 times safer.
 
Calculating the risks posed by a nuclear plant consists of three levels. Jae added a fourth level: calculating the risk of the multi-unit nuclear plants, which increases the safety level by up to 10 times.

Jae says this multi-unit PSA is the first in the world, and is thus receiving much attention from all over the world. His Multi-Unit Risk Research Group, consisting of eight institutes and more than a hundred researchers, awaits many important international workshops such as the International Symposium on Multi-Unit Risk and plans to stay on top of the latest research to ensure the greatest safety for our people.



Lim Ji-woo        il04131@hanyang.ac.kr
Photos by Park Geun-hyung
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