Abstract
Human reliability analysis (HRA) of a probabilistic
safety assessment (PSA) includes identifying human
actions from safety point of view, modelling the most
important of them in PSA models, and assessing their
probabilities. As manifested by many incidents and
studies, human actions may have both positive and
negative effect on safety and economy. Human reliability
analysis is one of the areas of probabilistic safety
assessment (PSA) that has direct applications outside the
nuclear industry.
The thesis focuses upon developments in human reliability
analysis methods and data. The aim is to support PSA by
extending the applicability of HRA. The thesis consists
of six publications and a summary. The summary includes
general considerations and a discussion about human
actions in the nuclear power plant (NPP) environment. A
condensed discussion about the results of the attached
publications is then given, including new development in
methods and data. At the end of the summary part, the
contribution of the publications to good practice in HRA
is presented.
In the publications, studies based on the collection of
data on maintenance-related failures, simulator runs and
expert judgement are presented in order to extend the
human reliability analysis database. Furthermore,
methodological frameworks are presented to perform a
comprehensive HRA, including shutdown conditions, to
study reliability of decision making, and to study the
effects of wrong human actions. In the last publication,
an interdisciplinary approach to analysing human decision
making is presented. The publications also include
practical applications of the presented methodological
frameworks.
Original language | English |
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Qualification | Doctor Degree |
Awarding Institution |
|
Supervisors/Advisors |
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Award date | 7 Dec 2000 |
Place of Publication | Espoo |
Publisher | |
Print ISBNs | 951-38-5585-6 |
Electronic ISBNs | 951-38-5586-4 |
Publication status | Published - 2000 |
MoE publication type | G5 Doctoral dissertation (article) |
Keywords
- human reliability analysis
- HRA
- probabilistic safety assessment
- human factors
- decision making
- expert judgement
- simulator studies