Projects per year
A probabilistic seismic hazard analysis (PSHA) has been conducted as part of the Safety Case justification for a new-build nuclear power plant in the UK. The study followed a cost-efficient methodology developed by CH2M and associates for safety-significant infrastructure where high-level regulatory assurance is required. Historical seismicity was re-evaluated from original sources. The seismicity model considered fourteen seismic sources which, when combined, formed six alternative seismic source models. Separate models for the median ground-motion and aleatory variability were considered. The median ground-motion model comprised a suite of ground-motion equations adjusted to the site-specific conditions using VS-kappa factors. A partially non-ergodic sigma model was adopted with separate components for the inter-event variability, and single-station intra-event variability, adjusted by a partially ergodic site-to-site variability term. Site response analysis was performed using equivalent-linear random vibration theory with explicit incorporation of the variability in the ground properties using Monte Carlo simulations. The final PSHA results were obtained by convolution of the hazard at the reference rock horizon with the site amplification factors. The overall epistemic uncertainty captured by the logic tree was assessed and compared against results from earlier PSHA studies for the same site.
|Number of pages||36|
|Journal||Bulletin of Earthquake Engineering|
|Early online date||6 Aug 2018|
|Publication status||Published - 15 Jan 2019|
- nuclear power plants
- seismic hazard
- Hinkley Point
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- Civil And Environmental Engineering - Senior Lecturer
- 1 Finished
Consultancy for CH2M Hill International
22/06/15 → 31/12/15
Project: Knowledge Exchange (Services/Consultancy)
- 19 Citations
- 1 Article
A streamlined approach for the seismic hazard assessment of a new nuclear power plant in the UKAldama-Bustos, G., Tromans, I. J., Strasser, F., Garrard, G., Green, G., Rivers, L., Douglas, J., Musson, R. M. W., Hunt, S., Lessi-Cheimariou, A., Davi, M. & Robertson, C., 4 Jan 2019, In: Bulletin of Earthquake Engineering. 17, 1, p. 37-54 18 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile
- 1 Invited talk
GMPE workshop for revision of UK national seismic hazard map
John Douglas (Invited speaker)27 Sep 2018
Activity: Talk or presentation types › Invited talk