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Course Outline
Day 1
Welcome
Introduction to Process Hazard Analysis
- Hazards – what they are and how to identify them
- PHA regulatory requirements
- When and why should you conduct hazard evaluations or analyses?
- OSHA interpretations on PHAs
Preparing for a PHA
- How to define PHA objectives and scope
- Staffing
- Information requirements
- Strategies to effectively engage all PHA participants
Critical Factors to Include in PHAs
- Human factors
- Facility siting
- Failure of engineering and administrative controls (safeguards)
- How to account for all operating scenarios
Workshop (Human Factors-Related)
P&IDs -Their Role in the PHA Process
- Purpose of P&IDs
- Characteristics of effective P&IDs
- Role of P&IDs in the PHA process
Management of Change (MOC)
- How changes impact the process hazard analysis
- “Change” vs. “replacement in-kind”
- Types of changes that should trigger a PHA
- OSHA interpretations on MOCs that lead to PHAs
Day 2
Overview of PHA Methodologies
- What-if/Checklist
- Hazard and Operability Study/Analysis (HAZOP)
- Failure Mode and Effects Analysis (FMEA)
- Fault tree analysis
- Advantages, disadvantages, and limitations of each methodology
- Importance of matching the PHA methodology to the complexity of the process
How to Conduct a PHA Using the What-if/Checklist Methodology
- Identify PHA objectives, scope, and subsystems
- Gather required information as input to the process
- Develop and modify the What-if/Checklist
- Rank risks and how risk impacts requirements for recommendations
- Document the PHA process and findings
- Pitfalls
- Preview of What-if/Checklist workshop
What-if/Checklist Workshop
Given appropriate preliminary documentation (P&IDs, photos, etc.), you will work in groups to define PHA objectives and subsystems for analysis, review given information, modify the What-if/Checklist, and complete a first-cut of a hazard evaluation list. Representatives from each group will present their PHA objective(s) and What-if/Checklist modifications.
Site Visit-Engine Room Walk-thru
Day 3
What-if/Checklist Workshop – (Continues)
Each group conducts a mock PHA using their What-if/Checklist.
What-if/Checklist Workshop Closeout
Roundtable discussion of site visit and PHA using the What-if/Checklist methodology
PHA Revalidation
- Revalidation requirements
- Planning for revalidation
- Redo, update, revise and revalidate-what’s the difference?
- How to conduct and document the PHA revalidation
Action Required Following a PHA
- Determine actionable recommendations
- Resolution of PHA action items
- Prioritization
- Management response
- Communication of findings
PHA Process Quality Improvement
- Post-mortem evaluation of a PHA session
- Strategies to achieve PHA process improvement