Wang, Zhenming (2005) Comment on J.U. Klügel's: Problems in the application of the SSHAC probability method for assessing earthquake hazards at Swiss nuclear power plants, in Engineering Geology, vol. 78, pp. 285–307. Engineering Geology, 82 (1). pp. 86-88. DOI: https://doi.org/10.1016/j.enggeo.2005.09.011
Full text not available from this repository.Abstract
The Senior Seismic Hazard Analysis Committee’s ( SSHAC, 1997) guidance for performing probabilistic seismic hazard analysis (PSHA) has been used to evaluate earthquake hazards at Swiss nuclear power plants (Klügel, 2005). Klügel (2005) found many inconsistencies and deficiencies in the SSHAC guidance and concluded b the results can not be explained by the available information on seismic activity and ground motion recordings in Switzerland. Q In other words, the results (hazard estimates) can not be physically compared to the geological and seismological observations. Also, Klügel also found that b the better the experts tried to discover and to quantify uncertainties following the SSHAC guidance, the more diffuse the resulting distribution will be. All these observations raise questions about the SSHAC guidance. The SSHAC guidance was developed by a seven member committee to address the large differences in PSHA results by different practitioners. The most important conclusion reached by the committee is b that differences in PSHA results are due to procedural rather than technical differences (SSHAC, 1997). In other words, b many of the major potential pitfalls in executing a PSHA are procedural rather than technical in character (SSHAC, 1997). The SSHAC guidance only deals with procedural problems in executing a successful PSHA, but not technical problems with PSHA itself. The technical problems may be one of the main reasons for the large differences, however. Thus, it would be beneficial to review the basics of PSHA and its drawbacks.
| Item Type: | Article |
|---|---|
| Subjects: | Methodology > Method and procesing > Probabilistic seismic hazard analysis - stationary |
| Project: | IS-EPOS project |