Efficient computational structural reliability analysis of concrete containments

J. Sadeghi, M. de Angelis, E. Patelli, N.K. Prinja

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This paper presents probabilistic analysis of structural capacity of pre-stressed concrete containments subjected to internal pressure using the Advanced Line Sampling Method (an efficient advanced Monte Carlo simulation technique, which gives more accurate results than FORM). This task is an important part of level 2 probabilistic safety analysis in the nuclear industry, particularly when a reactor is undergoing design assessment. We compare our calculation with experimental results from two international round robin test exercises (Sandia National Laboratories and Bhabha Atomic Research Centre) and calculations using FORM, which are available in the literature. Since the ultimate structural collapse mode of the structures has already been established, we simply attempt to probabilistically determine the failure pressure of the containment. Our results show close agreement with previous calculations and demonstrate that structural engineers who are not specialists in risk engineering can obtain accurate probabilistic analyses of their models using freely available software.
Original languageEnglish
Number of pages5
Publication statusPublished - 6 Jun 2018
Event2nd International Conference on Nuclear Power Plants: Structures, Risk & Decommissioning - Croydon, London, United Kingdom
Duration: 11 Jun 201812 Jun 2018


Conference2nd International Conference on Nuclear Power Plants
Abbreviated titleNUPP2018
Country/TerritoryUnited Kingdom


  • concrete containments
  • structural reliability analysis
  • pre-stressed concrete containments
  • Advanced Line Sampling Method
  • probabilistic safety analysis
  • probabilistic analyses


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