Square Pegs in Round Holes Avoiding Inappropriate Practices when Considering PHA and LOPA Scenarios (PowerPoint PDF)

Overview

Mikaela Dressendorfer
Todd Drennen
Nathan Knochel

March 2024

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mikaela dressendorfer

todd drennen, PE

Todd Drennen, PE

Mr. Drennen is a member of BakerRisk’s Process Safety Group. His work focuses on Process Safety Management (PSM) Consulting Services, including Process Hazard Analysis (PHA) and Layers of Protection Analysis (LOPA) facilitation (for both existing processes and capital projects), Sizing calculations and hydraulic studies for pressure relief devices and relief headers, Detailed dispersion modeling of pressure relief system discharges to the atmosphere using Safesite3G©, Development of guidelines and work processes for relief system design and analysis, Safety Integrity Level (SIL) determination, Fault Tree Analysis (FTA), and PSM Compliance Audits, serving the Oil & Gas, Chemical, Agricultural, and Energy industries.

For his PHA and LOPA facilitation work, he has utilized various methodologies including Hazards and Operability (HAZOP), What-If, Structured What-If (SWIF), Hazard Identification (HAZID), and Checklist techniques to evaluate hazardous process operations, new equipment designs, and process modifications, using PHA Pro, PHAWorks, Leader, and PHA-Tool© documentation software.

Committees

American Institute of Chemical Engineers (AIChE): Process Safety Management Mentoring (PSM2) Executive Committee
Delaware Valley Section (DVS) Board Member

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nathan knochel

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