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Human Reliability Analysis

IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making. 1. Human Reliability . HUMAN RELIABILITYThe probability of successful performance of only those human activities necessary to make a system reliable or available.HUMAN ERRORHuman Error is simply some human output which i

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Human Reliability Analysis

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    1. Human Reliability Analysis Workshop Information Purpose: To present and explain the Human Reliability Analysis Task Learning objectives: To get a global overview of Human Reliability Analysis Task within PSA Tasks framework, to understand Human Reliability Analysis Task objectives, to understand human action classification and SHARP framework Duration: 1[hr] Resources: screen, video projector, PC, PowerPoint 2000® Purpose: To present and explain the Human Reliability Analysis Task Learning objectives: To get a global overview of Human Reliability Analysis Task within PSA Tasks framework, to understand Human Reliability Analysis Task objectives, to understand human action classification and SHARP framework Duration: 1[hr] Resources: screen, video projector, PC, PowerPoint 2000®

    2. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 1

    3. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 2 The Human Reliability Analysis should be able to answer properly to this three questions and quantify the probability of human error of those actions considered safety relevant The Human Reliability Analysis should be able to answer properly to this three questions and quantify the probability of human error of those actions considered safety relevant

    4. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 3 The lecturer will emphasise that the main goal of the human reliability analysis for PSA is to evaluate the human error probability of some specific actions and integrate them in the PSA modelsThe lecturer will emphasise that the main goal of the human reliability analysis for PSA is to evaluate the human error probability of some specific actions and integrate them in the PSA models

    5. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 4 The elements that perform a role in the possible human behaviour will be commentedThe elements that perform a role in the possible human behaviour will be commented

    6. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 5 There are many other human error classifications possible. The categorisation presented here is only one of the possible useful under the point of view of HRA. The lecturer can include other categorisationsThere are many other human error classifications possible. The categorisation presented here is only one of the possible useful under the point of view of HRA. The lecturer can include other categorisations

    7. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 6 The lecturer should introduce cognoscitive human errors The lecturer should introduce cognoscitive human errors

    8. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 7 The lecturer should explain the difference between the categories of PSFs including examples of external, internal and stressor PSFs (use next slide)The lecturer should explain the difference between the categories of PSFs including examples of external, internal and stressor PSFs (use next slide)

    9. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 8

    10. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 9 Rasmussen classification. Other classifications are possible. Definitions are included in the next slideRasmussen classification. Other classifications are possible. Definitions are included in the next slide

    11. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 10

    12. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 11 The lecturer will explain the use of the tree to define the type of behaviour preferably with some specific examples The lecturer will explain the use of the tree to define the type of behaviour preferably with some specific examples

    13. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 12 This is the most common human action classification useful for PSA analysis.This is the most common human action classification useful for PSA analysis.

    14. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 13 SHARP is the procedure most commonly used in HRA within a PSA but other procedures are possibleSHARP is the procedure most commonly used in HRA within a PSA but other procedures are possible

    15. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 14 The lecturer should explain the 7 SHARP steps if it is possible including examples and describing the interface with other PSA tasks, for instance system analysis, event analysis, quantification, etc. The lecturer should explain the 7 SHARP steps if it is possible including examples and describing the interface with other PSA tasks, for instance system analysis, event analysis, quantification, etc.

    16. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 15

    17. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 16

    18. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 17 The lecturer will use this slide to introduce the human error probability quantification process explaining the different stages of the process that can be more or less sophisticate depending on the type of human actionThe lecturer will use this slide to introduce the human error probability quantification process explaining the different stages of the process that can be more or less sophisticate depending on the type of human action

    19. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 18 The different type of human action representation models are summarised in the following slidesThe different type of human action representation models are summarised in the following slides

    20. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 19 The lecturer will describe the development of an HRA event tree with a simple example with two task in parallel or in series. An example of a simple human action included in a PSA model will be useful The lecturer will describe the development of an HRA event tree with a simple example with two task in parallel or in series. An example of a simple human action included in a PSA model will be useful

    21. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 20 The lecturer will describe the development of an operator action tree. An example can be added.The lecturer will describe the development of an operator action tree. An example can be added.

    22. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 21

    23. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 22 The lecturer can describe the development of a Confusion Matrix to analyse and quantify possible misdiagnosis errors employing this specific exampleThe lecturer can describe the development of a Confusion Matrix to analyse and quantify possible misdiagnosis errors employing this specific example

    24. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 23 Many other quantification techniques exist. Here are collected some of the techniques most commonly employed in HRA for PSA but additional techniques may be included and explainedMany other quantification techniques exist. Here are collected some of the techniques most commonly employed in HRA for PSA but additional techniques may be included and explained

    25. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 24 This slide summarises the main characteristics of the quantification techniques. It can be employed to describe briefly the techniques and their differences.This slide summarises the main characteristics of the quantification techniques. It can be employed to describe briefly the techniques and their differences.

    26. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 25 This slide lists several methodologies that nowadays are been developing to analyse error of commission but that are nor yet used in HRA for conventional PRAsThis slide lists several methodologies that nowadays are been developing to analyse error of commission but that are nor yet used in HRA for conventional PRAs

    27. IAEA Training Course on Safety Assessment of NPPs to Assist Decision Making 26

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