Journal of Korean Society of Disaster and Security (한국방재안전학회논문집)

Korean Society of Disaster & Security (한국방재안전학회)
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Damage Evaluation of Adjacent Structures for Detonation of Hydrogen Storage Facilities

수소저장시설의 폭발에 대한 인접 구조물의 손상도 평가

  • Jinwon Shin (Department of Architectural Engineering, Catholic Kwandong University)
  • 신진원 (가톨릭관동대학교 건축공학과)
  • Received : 2023.02.22
  • Accepted : 2023.03.09
  • Published : 2023.03.31
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Abstract

This study presents an analytical study of investigating the effect of shock waves generated by the hydrogen detonation and damage to structures for the safety evaluation of hydrogen storage facilities against detonation. Blast scenarios were established considering the volume of the hydrogen storage facility of 10 L to 50,000 L, states of charge (SOC) of 50% and 100%, and initial pressures of 50 MPa and 100 MPa. The equivalent TNT weight for hydrgen detonation was determined considering the mechanical and chemical energies of hydrogen. A hydrogen detonation model for the converted equivalent TNT weight was made using design equations that improved the Kingery-Bulmash design chart of UFC 3-340-02. The hydrogen detonation model was validated for overpressure and impulse in comparison to the past experimental results associated with the detonation of hydrogen tank. A parametric study based on the blast scenarios was performed using the validated hydrogen detonation model, and design charts for overpressure and impulse according to the standoff distance from the center of charge was provided. Further, design charts of the three-stage structural damage and standoff distance of adjacent structures according to the level of overpressure and impact were proposed using the overpressure and impulse charts and pressure-impulse diagrams.

본 연구에서는 수소저장시설의 폭발에 대한 시설물의 안전성 평가를 위하여 수소 폭발에 의한 발생된 충격파의 효과와 그에 따른 구조물의 손상도 평가에 대한 해석적 연구를 수행하였다. 이를 위하여 수소저장시설의 폭발효과에 미치는 주요 설계변수로 수소저장시설의 부피(10~50,000 L), 잔존용량(SOC, 50% 및 100%) 및 초기 압력(50 MPa 및 100 MPa)을 고려하여 폭발 시나리오를 수립하였다. 수소폭발효과를 도출하기 위하여 수소의 기계적 에너지와 화학적 에너지를 고려한 TNT 등가량 산정방법을 활용하였다. 환산된 TNT 등가량에 대하여 기존 UFC 3-340-02의 Kingery-Bulmash 폭발하중 설계차트를 개선한 평가식을 적용하여 수소 폭발 모델을 제안하였다. 수소 폭발 모델은 거리별 압력과 충격량에 대하여 지난 수소 탱크의 폭발실험 결과와 비교하여 검증되었다. 검증된 수소폭발 모델을 활용하여 시나리오에 따른 변수해석을 수행하였으며 폭발 중심으로부터의 이격거리에 따른 압력과 충격량에 대한 설계차트를 제시하였다. 더욱이 이 압력과 충격량 설계차트와 압력-충격량(PI) 다이어그램을 활용하여 압력과 충격량의 수준에 따른 구조물의 미세손상, 주요부재손상 및 부분 붕괴의 3단계 손상도와 이격거리에 따른 설계차트를 제안하였다.

Keywords

Acknowledgement

This research was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2022RIS-005).

References

  1. Baek, Ju-Hong, Hyang-Jig Lee, and Chang Bong Jang. (2016). Comparison of H2, LNG, and LPG Explosion Characteristics in a Limited Space Using CFD Simulation. Journal of the Korean Institute of Gas. 20(3): 12-21. https://doi.org/10.7842/KIGAS.2016.20.3.12
  2. Baker, W. E., P. A. Cox, P. S. Westine, J. J. Kulesz, and R. A. Strehlow. (1983). Explosion Hazards and Evaluation. Elsevier Scientific Publishing Company.
  3. Department of Defense. (2008). Unified Facilities Criteria (UFC): Structures to Resist the Effects of Accidental Explosions (UFC 3-340-02). Departments of the Army, Navy, and Air Force. Washington, DC: DoD.
  4. Lee, Ho-Hyung, Hyo-Gyu Kim, Ji-Oh Yoo, Hu-Yeong Lee, and Oh-Seung Kwon. (2021). A Basic Study for Explosion Pressure Prediction of Hydrogen Fuel Vehicle Hydrogen Tanks in Underground Parking Lot. Journal of Korean Tunnelling and Underground Space Association. 23(6): 605-612. https://doi.org/10.9711/KTAJ.2021.23.6.605
  5. Lee, Hyunwoo, Donghyun Oh, and Youngjin Seo. (2020). Prediction of Changes in Filling Time and Temperature of Hydrogen Tank according to SOC of Hydrogen. Transactions of Korean Hydrogen and New Energy Society. 31(4): 345-350. https://doi.org/10.7316/KHNES.2020.31.4.345
  6. Molkov, V. and W. Dery. (2020). The Blast Wave Decay Correlation for Hydrogen Tank Rupture in a Tunnel Fire. International Journal of Hydrogen Energy. 45: 31289-31302. https://doi.org/10.1016/j.ijhydene.2020.08.062
  7. Molkov, V. and S. Kashkarov. (2015). Blast Wave from a High-Pressure Gas Tank Rupture in a Fire: Stand-Alone and Under-Vehicle Hydrogen Tanks. International Journal of Hydrogen Energy. 40: 12581-12603. https://doi.org/10.1016/j.ijhydene.2015.07.001
  8. Oh, Kyu-hyung and Kwang-won Rhie. (2004). A Study on the Explosion Characteristics of Hydrogen. Transactions of the Korean Hydrogen and New Energy Society. 15(3): 228-234.
  9. Park, Byoungjik, Yangkyun Kim, and In Ju Hwang. (2021a). Hydrogen Fire‧Explosion Risk Assessment. Proceedings of the 2021 Spring Conference of the Korean Society of Mechanical Engineers. 72-73.
  10. Park, Jinouk, Yongho Yoo, and Hwiseong Kim. (2021b). An Experimental Study on the Explosion of Hydrogen Tank for Fuel-Cell Electric Vehicle in Semi-Closed Space. Journal of Auto-Vehicle Safety Association. 13(4): 73-80. https://doi.org/10.22680/KASA2021.13.4.073
  11. Pyo, Don-Young and Ock-Taeck Lim. (2019). A Study on Explosive Hazardous Areas in Hydrogen Handling Facility. Transactions of Korean Hydrogen and New Energy Society. 30(1): 29-34.
  12. Shin, J., A. S. Whittaker, and D. Cormie. (2015). Incident and Normally Reflected Overpressure and Impulse for Detonations of Spherical High Explosives in Free Air. Journal of Structural Engineering. 141(12): 04015057.
  13. Yoon, Yong-Kyun. (2018). Evaluation of Blast Pressure Generated by an Explosion of Explosive Material. Explosives & Blasting (Journal of Korean Society of Explosives & Blasting Engineering). 36(4): 26-34.