Element IA5: The Assessment and Evaluation of Risk

1. Sources of Information Used in Identifying Hazards and Assessing Risk                                           5-3

• Accident/Incident and Ill-Health Data and Rates                                                                               5-3

• External Information Sources                                                                                                         5-5

• Internal Information Sources                                                                                                          5-5

• Uses and Limitations of Information Sources                                                                                  5-5

• Study Questions                                                                                                                           5-6

1. Hazard Identification Techniques                                                                                                    5-7

• Hazard Detection Techniques                                                                                                        5-7

• Importance of Worker Input                                                                                                           5-9

• Study Question                                                                                                                            5-9

1. Assessment and Evaluation of Risk                                                                                             5-10

• Key Steps in a Risk Assessment                                                                                                          5-10

• Use and Limitation of Generic, Specific and Dynamic Risk Assessments                                                        5-13

• Limitations of Risk Assessment Processes                                                                                   5-14

• Temporary and Non-Routine Situations                                                                                         5-15

• Consideration of Long-Term Hazards to Health                                                                              5-15

• Types of Risk Assessment                                                                                                                 5-15

• Organisational Arrangements for an Effective Risk Assessment Programme                                   5-18

• Acceptability/Tolerability of Risk                                                                                                  5-19

• Study Questions                                                                                                                         5-20

1. Systems Failures and System Reliability                                                                                       5-21

• Meaning of the Term ‘System’                                                                                                      5-21

• Principles of System Failure Analysis                                                                                                   5-21

• Using Calculations in the Assessment of System Reliability                                                            5-23

• Methods for Improving System Reliability                                                                                     5-27

• Study Questions                                                                                                                         5-28

1. Failure Tracing Methodologies                                                                                                     5-29

• A Guide to Basic Probability                                                                                                        5-29

• Principles and Techniques of Failure Tracing Methods in the Assessment of Risk                              5-30

• Study Questions

NEBOSH - IDP