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Analysis methods for fault trees that contain secondary failures
The fault tree methodology is appropriate when the component level failures (basic events) occur independently. One situation where the conditions of independence are not met occurs when secondary failure events appear in the fault tree structure. Guidelines for fault tree construction that have bee...
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| Main Authors: | , |
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| Format: | Default Article |
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2004
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| Online Access: | https://hdl.handle.net/2134/3824 |
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| _version_ | 1822546520541495296 |
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| author | Sarah Dunnett J.D. Andrews |
| author_facet | Sarah Dunnett J.D. Andrews |
| author_sort | Sarah Dunnett (1251444) |
| collection | Figshare |
| description | The fault tree methodology is appropriate when the component level failures (basic events) occur independently. One situation where the conditions of independence are not met occurs when secondary failure events appear in the fault tree structure. Guidelines for fault tree construction that have been utilized for many years encourage the inclusion of secondary failures along with primary failures and command faults in the representation of the failure logic. The resulting fault tree is an accurate representation of the logic but may produce inaccurate quantitative results for the probability and frequency of system failure if methodologies are used that rely on independence. This paper illustrates how inaccurate these quantitative results can be. Alternative approaches are developed by which fault trees of this type of structure can be analysed. |
| format | Default Article |
| id | rr-article-9226925 |
| institution | Loughborough University |
| publishDate | 2004 |
| record_format | Figshare |
| spelling | rr-article-92269252004-01-01T00:00:00Z Analysis methods for fault trees that contain secondary failures Sarah Dunnett (1251444) J.D. Andrews (7120562) Other engineering not elsewhere classified Fault tree analysis Secondary failures Engineering not elsewhere classified The fault tree methodology is appropriate when the component level failures (basic events) occur independently. One situation where the conditions of independence are not met occurs when secondary failure events appear in the fault tree structure. Guidelines for fault tree construction that have been utilized for many years encourage the inclusion of secondary failures along with primary failures and command faults in the representation of the failure logic. The resulting fault tree is an accurate representation of the logic but may produce inaccurate quantitative results for the probability and frequency of system failure if methodologies are used that rely on independence. This paper illustrates how inaccurate these quantitative results can be. Alternative approaches are developed by which fault trees of this type of structure can be analysed. 2004-01-01T00:00:00Z Text Journal contribution 2134/3824 https://figshare.com/articles/journal_contribution/Analysis_methods_for_fault_trees_that_contain_secondary_failures/9226925 CC BY-NC-ND 4.0 |
| spellingShingle | Other engineering not elsewhere classified Fault tree analysis Secondary failures Engineering not elsewhere classified Sarah Dunnett J.D. Andrews Analysis methods for fault trees that contain secondary failures |
| title | Analysis methods for fault trees that contain secondary failures |
| title_full | Analysis methods for fault trees that contain secondary failures |
| title_fullStr | Analysis methods for fault trees that contain secondary failures |
| title_full_unstemmed | Analysis methods for fault trees that contain secondary failures |
| title_short | Analysis methods for fault trees that contain secondary failures |
| title_sort | analysis methods for fault trees that contain secondary failures |
| topic | Other engineering not elsewhere classified Fault tree analysis Secondary failures Engineering not elsewhere classified |
| url | https://hdl.handle.net/2134/3824 |