Computational Assessment of the GT-MHR Graphite Core Support Structural Integrity in Air-Ingress Accident Condition

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The objective of this project was to perform stress analysis for graphite support structures of the General Atomics’ 600 MWth GT-MHR prismatic core design using ABAQUS ® (ver. 6.75) to assess their structural integrity in air-ingress accident conditions where the structure weakens over time due to oxidation damages. The graphite support structures of prismatic type GT-MHR was analyzed based on the change of temperature, burn-off and corrosion depth during the accident period predicted by GAMMA, a multi-dimensional gas multi-component mixture analysis code developed in the Republic of Korea (ROK)/United States (US) International –Nuclear Engineering Research Initiative (I-NERI) project. Both the … continued below

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Lim, Jong B.; Kim, Eung S.; Oh, Chang H.; Schultz, Richard R. & Petti, David A. October 1, 2008.

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The objective of this project was to perform stress analysis for graphite support structures of the General Atomics’ 600 MWth GT-MHR prismatic core design using ABAQUS ® (ver. 6.75) to assess their structural integrity in air-ingress accident conditions where the structure weakens over time due to oxidation damages. The graphite support structures of prismatic type GT-MHR was analyzed based on the change of temperature, burn-off and corrosion depth during the accident period predicted by GAMMA, a multi-dimensional gas multi-component mixture analysis code developed in the Republic of Korea (ROK)/United States (US) International –Nuclear Engineering Research Initiative (I-NERI) project. Both the loading and thermal stresses were analyzed, but the thermal stress was not significant, leaving the loading stress to be the major factor. The mechanical strengths are exceeded between 11 to 11.5 days after loss-of-coolant-accident (LOCA), corresponding to 5.5 to 6 days after the start of natural convection.

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  • NUTHOS-7,Seoul, Korea,10/05/2008,10/09/2008

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  • Report No.: INL/CON-08-14466
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 944214
  • Archival Resource Key: ark:/67531/metadc902429

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  • October 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 7, 2016, 4:02 p.m.

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Lim, Jong B.; Kim, Eung S.; Oh, Chang H.; Schultz, Richard R. & Petti, David A. Computational Assessment of the GT-MHR Graphite Core Support Structural Integrity in Air-Ingress Accident Condition, article, October 1, 2008; [Idaho Falls, Idaho]. (https://digital.library.unt.edu/ark:/67531/metadc902429/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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