Multi-Hazard Seismic Risk Assessment of a Cooling Water Delivery System
Publication: Lifelines 2022
ABSTRACT
This study describes a seismic probabilistic risk assessment (SPRA) of a supplemental cooling water delivery system at a nuclear power plant subjected to multiple earthquake-induced hazards. The system consists of an offsite groundwater well used concurrently for municipal water supply, submersible pumps, an adjacent pumphouse, a pipeline that transports water to a storage reservoir on a hilltop at the plant site, the hilltop reservoir structure and equipment, and buried piping that runs downhill to the plant. During an earthquake, all the system components are subjected to ground shaking hazard. Several of the system components are also subjected to the following seismic-induced ground failure hazards during or immediately following an earthquake: liquefaction, lateral spreading, and slope failure. The system relies on both long-existing infrastructure and recently added components. As a result, in addition to the varying susceptibility of the system components to different earthquake-induced hazards, these components embody a spectrum of construction vintages and prevailing seismic design criteria. This study summarizes the seismic fragility evaluations performed to assess the system component contributions to the overall system failure probability at increasing levels of seismic hazard. Seismic fragility functions were used to characterize the conditional probability of component failure as a function of seismic input. Component failure criteria were explicitly identified or screened out for potential seismic-induced failure modes considering that success of the system function require the ability to deliver cooling water from start to end. Risk insights from the SPRA identified the relative importance of individual components to the overall system risk. These insights can be used to support risk-informed decision-making.
Get full access to this article
View all available purchase options and get full access to this chapter.
REFERENCES
AMEC Environment & Infrastructure Inc. (2014a). Geotechnical Evaluation – 2014 Probabilistic Safety Assessment Kernkraftwerk Mühleberg, Oakland, CA.
AMEC Environment & Infrastructure Inc. (2014b). Geotechnical Evaluation – Rewag, Oakland, CA.
ACI (American Concrete Institute). (1992). Cracking of Concrete Members in Direct Tension, ACI 224.2R-92, Farmington Hills, MI.
ACI (American Concrete Institute). (2006). Code Requirements for Nuclear Safety Related Concrete Structures (ACI 349-06) and Commentary (ACI 349R-01), Farmington Hills, MI.
ALA (American Lifelines Association). (2005). Seismic Guidelines for Water Pipelines, prepared by G&E Engineering Systems Inc., Oakland, CA.
ASCE. (2006). Seismic Rehabilitation of Existing Buildings, ASCE/SEI 41-06, Reston, VA.
ASCE. (2013). Seismic Evaluation and Retrofit of Existing Buildings, ASCE/SEI 41-13, Reston, VA.
ASCE. (2017). Seismic Analysis of Safety-Related Nuclear Structures and Commentary, ASCE/SEI 4-16, Reston, VA.
CSI (Computers & Structures Inc). (2010). SAP2000, Version 14.2.2, Berkeley, CA.
EPRI (Electric Power Research Institute). (1994). Methodology for Developing Seismic Fragilities, EPRI TR-103959, EPRI, Palo Alto, CA.
EPRI (Electric Power Research Institute). (2009). Seismic Fragility Applications Guide Update, EPRI 1019200, EPRI, Palo Alto, CA.
EPRI (Electric Power Research Institute). (2018). Seismic Fragility and Seismic Margin Guidance for Seismic Probabilistic Risk Assessments, EPRI 3002012994, EPRI, Palo Alto, CA.
Kennedy, R. P., et al. (1984). Engineering Characterization of Ground Motion, Task I: Effects of Characteristics of Free-Field Motion on Structural Response, Washington, DC.
Nationale Genossenschaft für die Lagerung radioaktiver Abfälle. (2004). Probabilistic Seismic Hazard Analysis for Swiss Nuclear Power Plant Sites (PEGASOS Project), Switzerland.
Newmark, N. M., and Rosenblueth, E. (1971). Fundamentals of Earthquake Engineering, Prentice Hall, Englewood Cliffs, NJ.
Proseis, A. G. (2015). Calculation of the Seismic Hazard at the Four NPP Sites Based on the Hybrid SED – PRP Model, Zurich, Switzerland.
Renault, P. L. A., Hölker, A., and Roth, P. (2011). Intermediate Soil Hazard Results for Mühleberg – July 2011, Interoil E&P AG, Zurich, Switzerland.
Renault, P. L. A., et al. (2013). Probabilistic Seismic Hazard Analysis for Swiss Nuclear Power Plant Sites, Volume 1, Swissnuclear, Olten, Switzerland.
Roth, P., and Hölker, A. (2013). PEGASOS Refinement Project, Probabilistic Seismic Hazard Analysis for Swiss Nuclear Power Plant Sites, Volume 2, Results, Swissnuclear, Olten, Switzerland.
Sage Engineers. (2015a). Geotechnical Evaluation of the REWAG Well, Roseville, CA.
Sage Engineers. (2015b). Slope Stability Evaluation of South Slope, Roseville, CA.
Talaat, M. M., Nakaki, D. K., Hashimoto, P. S., and Bayraktarli, Y. (2015). “Seismic Fragility Evaluation of a Reinforced Concrete Groundwater Well Using Nonlinear Pushover Analysis,” SMiRT-23, Manchester, UK.
Watson-Lamprey, J., and Boore, D. M. (2007). “Beyond SaGMRotI: Conversion to SaArb, SaSN, and SaMaxRot,” BSAA, Vol. 7, No. 5, Albany, CA.
Wilson, J. (2000). Earthquake Design and Analysis of Tall Reinforced Concrete Chimneys, PhD. Dissertation, Dept. of Civil and Env. Eng., University of Melbourne, Australia.
Information & Authors
Information
Published In
Lifelines 2022
Pages: 767 - 781
History
Published online: Nov 16, 2022
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.