State-of-the-art expertise in Probabilistic Risk Assessment

  • Fault Tree and Event Tree analysis
  • Data analysis and Bayesian analysis
  • Human reliability analysis
  • Monte-Carlo simulation and uncertainty analysis
  • Internal and external hazard analysis
  • Severe accident analysis and Level 2 PRA/PSA
  • Fire propagation simulation
  • Risk Monitor software and implementation

  • Global client base

  • Tractebel
  • Hitachi GE
  • Areva NP Inc
  • First Energy
  • EPZ
  • EDF Energy
  • CRIEPI
  • EPRI
  • UK Office for Nuclear Regulation
  • Quality

  • ISO9001:2008 certified - audited by LRQA

  • Utility Vendor Database (UVDB) verified - audited by Achilles




  • Examples of our work

  • Hazards PSA for nuclear new build Generic Design Assessment
  • Support to the UK Office for Nuclear Regulation on review of PSA submissions for Generic Design Assessment
  • Support to the UK Office for Nucelar Regulation on Safety Performance Indicators
  • Support to Beaver Valley Unit 1 Fire PSA update following NUREG/CR 6850 to support risk informed regulation / NFPA 805
  • Support to Areva on Level 2 PSA for both US and UK generic design reviews
  • Review for the UK Office for Nuclear Regulation of the Fukushima accident sequences and MAAP and MELCOR analyses
  • Visit our downloads and case studies pages for more information.

    Offices in Cheshire, Merseyside and Surrey

    Thorncroft Manor, Leatherhead (Surrey)
    Riverside, Congleton (Cheshire)
    Bulloch House, Liverpool (Merseyside)

    Full contact details for offices ...