2025 Spring Meeting and 21st Global Congress on Process Safety

(12c) HAZOP Vs. Prescriptive Approaches in Dust Hazard Analysis: A Comparative Study on Outputs, Applications, and Limitations

Author

This presentation compares the outputs of a HAZOP-based Dust Hazard Analysis (DHA) to those generated from a prescriptive DHA approach. HAZOP, known for its detailed and scenario-based hazard identification, provides a nuanced understanding of potential process hazards. However, it may fall short in certain combustible dust scenarios where a more straightforward, code-based (prescriptive) DHA is faster and more cost-effective. This presentation will help attendees identify in which contexts each methodology works best, comparing both the depth of insight and practicality for various facility types. By analyzing the outcomes of each approach, safety professionals can better determine when to deploy HAZOP versus prescriptive DHAs for effective hazard mitigation.

Key Learning Points:

  1. Methodology Comparison: Attendees will gain an understanding of how a HAZOP-based DHA differs in scope, depth, and outcomes compared to a prescriptive DHA. The presentation will explore case studies and quantitative outputs of both methods.
  2. Strengths and Weaknesses: Learn the strengths of a HAZOP-based approach, particularly in complex processes with numerous variables, and contrast that with the efficiency and ease of implementation of a prescriptive DHA for more standardized operations.
  3. When to Choose HAZOP or Prescriptive DHA: Attendees will leave with a clear framework for determining when to utilize HAZOP for more complex, high-risk systems and when a prescriptive DHA may suffice.
  4. Case Study Analysis: Analyze real-world examples where each method was applied and how the differing approaches impacted the identification of risks, the design of mitigation measures, and overall compliance with NFPA standards.

This topic will appeal to safety professionals who seek to balance the need for thorough, comprehensive risk assessments with the practicalities of time, budget, and regulatory compliance, especially in facilities handling combustible dust.