Episode
Episode 295 - Bryan Haywood - Complex Lockout-Tagout
- Published
- Feb 20, 2026
- Duration seconds
- 1980
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Summary
Episode 295 with Bryan Haywood focuses on how to manage complex lockout/tagout (LOTO)—the kind of hazardous‑energy control work that goes far beyond a simple disconnect. The episode highlights why complex LOTO requires deeper planning, stronger coordination, and more rigorous verification than standard procedures. What Makes a Lockout “Complex” Complex LOTO applies when equipment has multiple energy sources, multiple isolation points, or multiple crews involved. These situations often include: Process vessels and reactors Systems with electrical, mechanical, hydraulic, pneumatic, chemical, or thermal energy Equipment requiring double block and bleed Tasks that span multiple shifts or require sequencing Scenarios where a single disconnect cannot isolate all hazards NFPA 70E defines complex LOTO as any situation with multiple energy sources, multiple crews, multiple crafts, multiple locations, or multiple disconnecting means—requiring a written plan and a designated person in charge. Key Concepts from the Episode 1. Understanding the Hazardous Energy Profile Haywood explains that complex LOTO begins with mapping every form of hazardous energy in the system. For process equipment like reactors and vessels, this includes: Internal pressure Residual chemicals Steam or thermal energy Stored mechanical energy Multiple electrical feeds The goal is to identify all energy sources and how they interact. 2. Double Block and Bleed A major focus of the episode is the use of double block and bleed to isolate hazardous energy in process systems. This method: Uses two closed valves with a bleed valve between them Ensures isolation even if one valve leaks Is essential for chemical, steam, and pressure systems Haywood emphasizes that operators must be trained to understand when and how t…