Corporate

18 | 310-BZN-01-ISDO Top 10 Primary Causal Factors Validations were completed between April 1 and 4, 2025 Rank # Category Primary Root-Cause Workshop Average Standard Deviation 1 Process Inadequate training 7.00 0.00 2 Environment Poor workstation design/layout 6.67 0.52 3 People Poor technique 6.00 0.63 3 Culture Lack of effective supervision 6.00 0.63 5 Measures Lack of evaluation of effectiveness of training 6.00 0.89 5 Environment Lack of storage capacity 6.00 0.89 7 People Fatigue 6.00 1.10 8 Process Inadequate/lack of safe work practices 5.83 0.41 8 Tools & Machines Incorrect use of/failure to use equipment 5.83 0.41 10 Process Inadequate staffing 5.83 0.75

• Slide Number 1
• Table of Contents
• RA RCA project overview
• Introduction
• Industry Selection
• A Collective Process
• Introduction (1)
• Risk Assessment Workshop
• WSPS Communications – Risk Assessment Results
• RCA workshop Results
• Risk Statement
• Participant List: Subject Matter Experts
• RCA Results
• Identified Primary Causal Factors
• Category Breakdown – 35 Primary Causal Factors
• Voting Process – Level of Importance
• Top 10 Primary Causal Factors
• Employer vs. Workshop Results
• Worker vs. Workshop Results
• Employer vs. Worker Results
• Top 10 Comparison
• Recommendations
• Final Workshop Recommendations and Conclusions
• Next steps – Rca workshop
• Next Steps
• Slide Number 27
• Appendix A – Fishbone diagrams
• Primary Causal Factors
• Slide Number 30
• Slide Number 31
• Slide Number 32
• Slide Number 33
• Slide Number 34
• Slide Number 35
• Appendix B – Controls/Solutions for top primary causal factors
• 1. Process – Inadequate Training
• 1. Process – Inadequate Training (1)
• 1. Process – Inadequate Training (2)
• 1. Process – Inadequate Training (3)
• 1. Process – Inadequate Training (4)
• 1. Process – Inadequate Training (5)
• 1. Process – Inadequate Training (6)
• 1. Process – Inadequate Training (7)
• 2. Environment – Poor Workstation Design/Layout
• 2. Environment – Poor Workstation Design/Layout (1)
• 2. Environment – Poor Workstation Design/Layout (2)
• 2. Environment – Poor Workstation Design/Layout (3)
• 2. Environment – Poor Workstation Design/Layout (4)
• 3. People – Poor Technique
• 3. People – Poor Technique (1)
• 3. People – Poor Technique (2)
• 3. People – Poor Technique (3)
• 3. Culture – Lack of Effective Supervision
• 3. Culture – Lack of Effective Supervision (1)
• 3. Culture – Lack of Effective Supervision (2)
• 5. Measures – Lack of Evaluation of Effectiveness of Training
• 5. Measures – Lack of Evaluation of Effectiveness of Training (1)
• 5. Measures – Lack of Evaluation of Effectiveness of Training (2)
• 5. Environment – Lack of Storage Capacity
• 5. Environment – Lack of Storage Capacity (1)
• 5. Environment – Lack of Storage Capacity (2)
• 5. Environment – Lack of Storage Capacity (3)
• 7. People – Fatigue
• 7. People – Fatigue (1)
• 7. People – Fatigue (2)
• 7. People – Fatigue (3)
• 8. Process – Inadequate/Lack of Safe Work Practices (SWPs)
• 8. Process – Inadequate/Lack of Safe Work Practices (SWPs) (1)
• 8. Process – Inadequate/Lack of Safe Work Practices (SWPs) (2)
• 8. Process – Inadequate/Lack of Safe Work Practices (SWPs) (3)
• 8. Tools & Machines – Incorrect Use of/Failure to Use Equipment
• 8. Tools & Machines – Incorrect Use of/Failure to Use Equipment (1)
• 8. Tools & Machines – Incorrect Use of/Failure to Use Equipment (2)
• 8. Tools & Machines – Incorrect Use of/Failure to Use Equipment (3)
• 10. Process – Inadequate Staffing
• 10. Process – Inadequate Staffing (1)
• Appendix c – workshop contacts
• Workshop Contacts
• Disclaimer
• Slide Number 81