Fragility of Electrical Power Equipmentby Anshel J. Schiff, (M.ASCE), Assoc. Prof.; School of Mech. Engrg., Purdue Univ., West Lafayette, Ind.,
Donald E. Newsom, Asst. Environmental System Engr.; Argonne National Lab., Argonne, Ill.; formerly, Grad. Research Asst., School of Aeronautics and Astronautics, Purdue Univ., West Lafayette, Ind.,
Serial Information: Journal of the Technical Councils of ASCE, 1979, Vol. 105, Issue 2, Pg. 451-465
Document Type: Journal Paper
Knowledge of equipment fragility, i.e., the probability of equipment being nonfunctional after experiencing a severe load of a given level, is required to predict power system response to severe load such as earthquakes. A review of the literature and the results of a questionnaire survey of equipment manufacturers, electric utilities, and consulting firms that deal with the analysis or testing of power equipment are tabulated. The survey shows that: (1) Most fragility data is based on engineering estimates rather than on the results of tests or analysis; (2) for many types of equipment, estimates are quite speculative; and (3) the range of estimates for a given type of equipment, for the few cases where there are more than one, often vary by a factor of three or more. A bibliography for the testing and analysis of electric power equipment is included.
Subject Headings: Electrical equipment | Electric power | Surveying instruments | Surveys (non-geomatic) | Seismic loads | Energy infrastructure | Probability
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