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Using Safety Margins for a German Seismic PRA
Joint Authors
Singh, Jang-Bahadur
Tietsch, Wolfgang
Obenland, Ralf
Bloem, Theodor
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-07-20
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The German regulatory guide demands the performance of a probabilistic risk assessment (PRA) including external events.
In 2005, a new methodology guideline (Methodenband) based on the current state of science and technology was released to provide the analyst with a set of suitable tools and methodologies for the analysis of all PRA events.
In the case of earthquake, a multilevel verification procedure is suggested.
The verification procedure which has to be used depends on the seismic risk at the site of the plant.
For sites in areas with low seismic activity no analysis or only a reduced analysis is proposed.
This paper describes the evaluation of safety margins of buildings, structures, components and systems for plants at sites with high seismic risk, corresponding to the German methodology guideline.
The seismic PRA results in an estimation of core damage frequencies caused by earthquakes.
Additionally, the described approach can also be adapted for the usage in a reduced analysis for sites with lower earthquake risks.
Westinghouse has wide experience in performing seismic PRA for both BWR as well as PWR plants.
Westinghouse uses the documented set of seismic design analyses dating from construction phase and from later updates, if done, as a basis for a seismic PRA, which means that usually no costly new structural mechanics calculations have to be performed.
American Psychological Association (APA)
Obenland, Ralf& Bloem, Theodor& Tietsch, Wolfgang& Singh, Jang-Bahadur. 2008. Using Safety Margins for a German Seismic PRA. Science and Technology of Nuclear Installations،Vol. 2008, no. 2008, pp.1-5.
https://search.emarefa.net/detail/BIM-496742
Modern Language Association (MLA)
Obenland, Ralf…[et al.]. Using Safety Margins for a German Seismic PRA. Science and Technology of Nuclear Installations No. 2008 (2008), pp.1-5.
https://search.emarefa.net/detail/BIM-496742
American Medical Association (AMA)
Obenland, Ralf& Bloem, Theodor& Tietsch, Wolfgang& Singh, Jang-Bahadur. Using Safety Margins for a German Seismic PRA. Science and Technology of Nuclear Installations. 2008. Vol. 2008, no. 2008, pp.1-5.
https://search.emarefa.net/detail/BIM-496742
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-496742