UL FSRI Episodes

When wildfire threatens neighbourhoods with closely-spaced homes, what determines whether flames leap from one structure to the next? The FSRI research team - Rebekah Schrader, Joseph Willi, Daniel Gorham and Gavin Horn - joins us to unveil their experimental series that methodically dissects the pathways through which fire spreads between buildings. The team walks us through their massive outdoor experimental setup, where they created controlled compartment fires and measured their impact on ad...

In this podcast episode, we host Rebekah Schrader, Joseph Willi, Daniel Gorham and Gavin Horn, all from the FSRI, to cover their recent experimental research on fire spread through external walls. This is part 1 of the interview - the background, rationale and context. In part 2, we cover the experiments themselves, findings and actionable guidance from the experiments. This research is conducted within the context of structure-to-structure fire spread, potentially in urban conflagration scenari...

Most fire engineers would be aware of how openings like doors and windows, the stack effect, and even wind can significantly alter fire outcomes. But there is a considerable difference between knowing that it does, and knowing how much that changes fire growth, size and the internal building environment. I've invited FSRIs dr Craig Weinschenk to discuss his years of full-scale research on fire flows. In this episode, we discuss different conditions that occur once the flow is established at wind...

Three months ago I saw a video of some sort of an electric scooter going off in someone's residential building. That person had absolutely no chance of controlling that fire. I guess they have escaped, but it must have been severe fire damage to their home. Then, I listened to an excellent webinar by IFAB ( https://www.youtube.com/watch?v=2vir4_1qSSc ) where for the first time I've seen useful measurements of HRR in such a fire... and they are horrifying. A fire in a range of ¬1 MW is in many ca...

Will a higher resolution mesh make my CFD more accurate? That is a harmless question, and most of us would tend toward 'I guess yeah'. But let us try and unpack this. Into atoms! What does higher resolution mean? How exactly solver deals with increased spatial discretization and what are the exact consequences of that? What is a high resolution for a tiny orifice and what is a high resolution for a road tunnel? But it gets better... What makes CFD more accurate? Is it better alignment with exper...

This amount of heat flux for this amount of time, routine conditions, check, done. This is how I used to do my engineering and tenability assessment related to heat stress... up till today when prof Denisse Smith and prof Gavin Horn took me on a bumpy journey into the physiology of humans in fire conditions and in personal protective equipment (PPE). It is astonishing, that the stress on the body of the firefighter may be as great from the fire as from their own heat generation due to work being...

How much the fire scene at households has changed over the last 30 years? Why modern furniture burns worse than one made with wood, cotton and other natural materials? And what does that mean to firefighting? What challenges do modern firefighters face fighting residential fires... There is so many questions to be asked about residential fires, and in this episode, I answer a lot of them with the firefighting research legends - Dan Madrzykowski of the UL Fire Safety Research Institute and profes...

We all understand the dangers of smoke inhalation in fires. But what about the site of the fire a few days after it was put out? It looks clean, maybe even lost the smell... Is it something to worry about, or you can rush straight in, wearing your shorts and a t-shirt? Well, I guess I would not be that reckless, but if I can be honest - I don't think I would care that much about protecting myself either... At least that was me before the talk to dr Gavin Horn from UL FSRI. Gavin spent more than ...

In this episode I was really happy to host two amazing researchers from UL FSRI - Dr Steve Kerber, the VP of Underwriter Laboratories and Director of UL Fire Safety Research Institute, and Dr Craig Weinschenk, research engineer and a data wizard. Together we venture into the world of fire research carried together with firefighters, with the critical goal of saving firefighter lives and reducing the damage caused by fire. Join us to learn how the largest full-scale fire experiments are performed...