Tom Shephard has 42 years of experience in global operating, engineering design,and consulting companies in the hydrocarbon and related technology industries. Tom designed and delivered safety solutions and studies to world¿class global projects in O&G, refining, petrochemicals, and pipelines. Early roles included corporate technology and project leadership, HMI and safety system design and delivery, and technology and project consulting. Career spanning roles and efforts included functional safety and developing new corporate and project technology standards, tools, and project execution methods. Later roles shifted to process safety, safety and reliability studies, and department management for a world¿class technical safety department. Tom's efforts to integrate cognitive ergonomics and cognitive science into human barrier design began with the Deepwater Horizon accident. He brings a seasoned practitioner's mindset, persistence, passion, and a unique blend of multi¿discipline competencies to that effort.

1. Introduction. 2. Terms, Definitions, and Model Constructs. 3. Conceptual and Preliminary Design (Model Phases A and B). 4. Detailed Design, Engineering, and Requisitions (Model Phase C). 5. Implementation: Procurement, Fabrication, Human and Organizational Elements (Model Phase C). 6. Construction, Installation, and Commissioning (Model Phase D). 7. Operate and Maintain, Modify, and Decommission (Model Phases E, F, and G). 8. The Case for Developing a New Standard for Active Human Barriers. 9. Concluding Observations, Findings, and Remarks. Appendix A. Project Execution and Planning. Appendix B. Technical Design, Resources, and Topics. Appendix C. Teams and Teamworking. Appendix D. Performance Standards. Appendix E. Procurement. Appendix F. Cognition: Baseline Science and Application. Appendix G. Verification and Validation. Appendix H. Performance Influencing Factors. Appendix I. Cognitive Assessment and Mitigation Process 1. Appendix J. Human and Organizational Elements. Appendix K. Workspace Development and Design Principles. Appendix L. Remote Barrier Support, Remote Operations Centers. Appendix M. Deepwater Horizon Accident: Active Barrier Causal Contributors.