Seismic Risk Assessment for a Utility System

by Dennis K. Ostrom, Southern California Edison, Rosemead, CA, USA,
Gilbert J. Gould, Southern California Edison, Rosemead, CA, USA,

Document Type: Proceeding Paper

Part of: Lifeline Seismic Risk Analysis—Case Studies


Presented is a procedure by which a utility could develop the probabilities for different levels of capital loss exposure for its system. The procedure relies on experience data obtained from similar facilities or facilities that contain similar types of equipment and structures which have experienced earthquakes in the past. All of the activities that must take place to arrive at a system seismic risk assessment are presented; these activities are described and how they integrate is shown. This procedure could present management with a tool which can be used in the determination of the amount of capital loss insurance to buy.

Subject Headings: Seismic effects | Seismic tests | Assets | Public health and safety | Probability | Equipment and machinery | Insurance | Power outage

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