Earticle

초록

영어

Background: Methodologies for a series of radiological consequence assessments show a distinctive difference according to the design principles of the original nuclear suppliers and their technical standards to be imposed. This is due to the uncertainties of the accidental source term, radionuclide behavior in the environment, and subsequent radiological dose. Both types of PWR and PHWR are operated in Korea. However, technical standards for evaluating atmospheric dispersion have been enacted based on the U.S. NRC’s positions regardless of the reactor types. For this reason, it might cause a controversy between the licensor and licensee of a nuclear power plant. Materials and Methods: It was modelled under the framework of the NRC Regulatory Guide 1.145 for light-water reactors, reflecting the features of heavy-water reactors as specified in the Canadian National Standard and the modelling features in MACCS2, such as atmospheric diffusion coefficient, ground deposition, surface roughness, radioactive plume depletion, and exposure from ground deposition. Results and Discussion: An integrated accident consequence assessment code, ACCESS (Accident Consequence Assessment Code for Evaluating Site Suitability), was developed by taking into account the unique regulatory positions for reactor types under the framework of the current Korean technical standards. Field tracer experiments and hand calculations have been carried out for validation and verification of the models. Conclusion: The modelling approaches of ACCESS and its features are introduced, and its applicative results for a hypothetical accidental scenario are comprehensively discussed. In an applicative study, the predicted results by the light-water reactor assessment model were higher than those by other models in terms of total doses.

목차

ABSTRACT
 Introduction
 Materials and Methods
 Results and Discussion
 Conclusion
 Acknowledgements
 References

키워드

저자

• Won Tae Hwang [ Nuclear Environment Safety Research Division, Korea Atomic Energy Research Institute, Daejeon, Korea ] Corresponding author
• Hae Sun Jeong [ Nuclear Environment Safety Research Division, Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Hyo Joon Jeong [ Nuclear Environment Safety Research Division, Korea Atomic Energy Research Institute, Daejeon, Korea ]
• A Reum Kil [ Nuclear Environment Safety Research Division, Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Eun Han Kim [ Nuclear Environment Safety Research Division, Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Moon Hee Han [ Nuclear Environment Safety Research Division, Korea Atomic Energy Research Institute, Daejeon, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629