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The Code Authority® Newsletter September 2026

Explore this month’s articles on updated product safety requirements and trends from UL Solutions experts.
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Developed by industry specialists with an unbiased stance on the requirements needed to enable a safer built environment, The Code Authority® (TCA) newsletter provides relevant updates from UL Solutions on topics of interest to authorities having jurisdiction (AHJs), inspectors, code officials, tradespeople, educators and industry professionals across the fire, electrical, security and building sectors.  

Enjoy the articles below and join in the conversation with the TCA community on LinkedIn, YouTube and Spotify. 

Charge limits for safety class A3 refrigerants:  Codes and standards review

Understand A3 refrigerant charge limits, installation considerations and the evolving codes and standards governing their use.  

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Is Your Commuter Rail Ready for an E-Scooter Fire?

Explore new findings from UL Research Institutes on the risks posed by lithium-ion battery fires in passenger railcars and what they mean for inspection programs, code compliance and public safety.

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The Origins of Safety Science: A Chicago Legacy That Continues to Shape Public Safety

Discover how a Chicago-founded organization helped create the field of safety science and influence safety practices around the world. A new exhibit at the Chicago History Museum highlights the origins of Underwriters Laboratories and the evolution of the UL Mark, offering valuable context on the legacy that continues to support public safety today.

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Explore the latest TCA trainings

Access our catalog of trainings from The Code Authority®, covering building, fire and electrical safety for inspectors and code authorities.

Bruce E. Johnson

Bruce Johnson

Bruce is the managing editor of The Code Authority® newsletter and brings his passion for fire and life safety, along with over 30 years of experience, to his role as regulatory services manager at UL Solutions. 

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The Code Authority® (TCA) newsletter is developed by industry specialists who have an unbiased stance on the requirements needed to enable a safer built environment. For further information or questions, please contact UL Solutions.