A Practical Approach to Structural Evaluation of Radioactive Waste Transport Containers Using Strain Limits Based on Stress Triaxiality

• 발행기관: 한국방사성폐기물학회
• 저자명: Jongmin Lim Yun-young Yang Hoseog Dho Hyungoo Kang Sang Soon Cho
• 간행물 정보: 『Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)』Vol.23 No.2, 265~279쪽, 전체 15쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2025.06.30

국문 초록

This study introduces a strain limit-based evaluation method that considers stress triaxiality to assess the structural integrity of radioactive waste transport containers. Unlike conventional stress-based approaches, this method provides a more precise assessment of localized plastic deformation and damage. By incorporating strain-based failure criteria, it enables a realistic evaluation of impact-induced deformation under complex stress states. A post-processing program is developed to intuitively verify strain safety margins, improving assessment accuracy. Additionally, sub-modeling techniques refined the strain distribution analysis in damage-concentrated areas, which could not be captured in full-scale simulations. This enhances the reliability of impact evaluations. Based on these procedures, a drop safety verification process was established for the freight container used in low- and intermediate-level waste transport. The results demonstrated the feasibility of strain limit-based evaluation in practical applications. This approach improves the structural assessment of transport containers and contributes to the advancement of design and certification processes.

목차

1. Introduction

2. Drop Test for Transport Containers

3. Safety Evaluation for Transport Containers

4. Evaluation of Transport Containers

5. Conclusion

Conflict of Interest

Acknowledgements

REFERENCES

키워드

Transport container Radioactive waste Drop test Stress triaxiality Strain limit