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Fire Science Show

Fire Science Show

Wojciech Wegrzynski 265 Episodes Jul 22, 2026

Fire Science Show connects fire researchers and practitioners with a society of fire engineers, firefighters, architects, designers, and others interested in creating a fire-safe future. Through interviews with diverse experts, it presents the history of the field as well as the most novel advancements. The show is produced in partnership with OFR Consultants.

Episodes

261 - The story of the Cone Calorimeter with Vyto Babrauskas
261 - The story of the Cone Calorimeter with Vyto Babrauskas Jul 22, 2026 5624 The cone calorimeter sits in thousands of labs, shaping what we know about flammability, smoke production, and heat release rate. This essential piece of equipment comes with quite a story of how it was engineered or why its “obvious” design choices were anything but obvious. We wanted that history from the source, so we invited Professor Vyto Babrauskas to walk us through the decisions, constrain
260 - Fire safety in a carbon budget with Cecilia Wetterqvist and Axel Mossberg
260 - Fire safety in a carbon budget with Cecilia Wetterqvist and Axel Mossberg Jul 15, 2026 4389 A carbon budget can feel like a hard wall in modern building design, and once you treat CO2 as currency, everything starts competing for a slice of it. The problem is that fire safety systems often show up in those spreadsheets only as a penalty: extra embodied carbon for sprinklers, alarms, and protection. What gets ignored is the payoff. A serious fire can erase years of “sustainable” choices th
259 - Communicating fire science with politicians with Birgitte Messerschmidt
259 - Communicating fire science with politicians with Birgitte Messerschmidt Jul 8, 2026 3725 Fire safety is a tough “product” to sell because the best outcome looks like nothing happened. That’s exactly why we sat down with Birgitte Messerschmidt (NFPA) to talk about communicating fire science to politicians, regulators, grant bodies, and other people in positions of power who can approve policies, permits, and funding, often with only a few minutes to spare. We share what changes when yo
258 - e-mobility fires in trains with Adam Barowy
258 - e-mobility fires in trains with Adam Barowy Jul 1, 2026 3397 A battery fire on a train is not “just another small fire.” When a lithium-ion battery in an e-scooter or e-bike fails, the rail car can behave like a long pipe that moves smoke fast, limits escape options, and compresses decision-making into minutes.We sit down with Adam Barowy from UL Research Institutes FSRI to unpack new full-scale passenger rail car burn tests using real micro-mobility device
257 - Fire Fundamentals pt. 21 - Radiation with Simo Hostikka
257 - Fire Fundamentals pt. 21 - Radiation with Simo Hostikka Jun 24, 2026 3791 In this episode of fire fundamentals we sit down with Professor Simo Hostikka from Aalto University to cover radiation in fires, both from the angle of physical phenomena and ways to model it. In this episode we cover following topics: feel less mysterious, from blackbody basics and role of radiation actually does inside the CFD N-S equation. Spectrum and emissivity to real engineering outcomes li
256 - Modelling turbulent combustion in fire CFD with Bart Merci
256 - Modelling turbulent combustion in fire CFD with Bart Merci Jun 17, 2026 4363 While we can get pretty far with a very simple approximation of what a fire is in our fire cfd, at some point our simplications are not enough. And there is a plenty of features and phenomena, for which we simply need a better tool to handle -  carbon monoxide, soot, extinction, flashover behavior, and what happens when ventilation disappears. At the IAFSS symposium, we sit down with Professor Bar
255 - Timber load bearing capacity in fire from nano- to megascale with Felix Wiesner
255 - Timber load bearing capacity in fire from nano- to megascale with Felix Wiesner Jun 10, 2026 3657 A timber column can survive the heating phase of a fire resistance test and still collapse later, after the flames are gone. We know there is so much more to structures in fires than the test demonstrates, but how much exactly do we know about timber nowadays? In this episode we try to dive deeper and discuss mass timber fire safety, structural fire engineering, and what a fire resistance rating d
254 - Communicating fire science with firefighters, with Steve Kerber
254 - Communicating fire science with firefighters, with Steve Kerber Jun 3, 2026 3622 Fire science should have its place at the fireground, yet I've learned how hard it is to communicate it with the key stakeholder - the firefighters. It's not my isolated experience, and that tension drives our conversation with Steve Kerber, Vice President at UL Research Institutes Fire Safety Research Institute (FSRI). Today we dig into the real craft of communicating fire dynamics to f
253 - NERIS - the paradigm shift for the US fire data collection with Craig Weinschenk
253 - NERIS - the paradigm shift for the US fire data collection with Craig Weinschenk May 27, 2026 4409 A national fire statistics system that updates in weeks is not a statistics system, it is a history lesson. We talk with Dr. Craig Weinschenk from UL Research Institutes - Fire Safety Research Institute about NERIS (the National Emergency Response Information System) and why it represents a real shift in fire incident reporting, emergency response data, and fire service analytics across the United
252 - Substantiating Fire Models with Craig Hofmeister and Bryan Klein
252 - Substantiating Fire Models with Craig Hofmeister and Bryan Klein May 20, 2026 4033 Jumping straight to CFD has become the default move in fire safety engineering, but that habit can quietly weaken our work: more inputs, more assumptions, more ways to be wrong, and often no clearer link to the actual design question. We sit down with Craig Hofmeister and Brian Klein to unpack a practical, defensible way to choose the right fire model for the job using the SFPE guideline “Substant
251 - Occupant loads in Car Parks with Mike Spearpoint
251 - Occupant loads in Car Parks with Mike Spearpoint May 13, 2026 3797 “Two people per parking space” is one of those default fire engineering inputs that we are very used to place into a model without really thinking much of it. But it is one of those defaults that show a huge richness once you dig deeper. Are all parking spaces taken? Are people in their cars? What are they doing? How long have they been there concurrently... We take that simple rule and pull on th
250 - Communicating fire science with construction professionals
250 - Communicating fire science with construction professionals May 6, 2026 3141 A fire strategy can be technically correct, but if the team building the building never truly understands it - goals and objectives may be missed. For the 250th Fire Science Show, we slow down and talk about the craft of communicating fire science to construction professionals so that the intent survives real projects, real deadlines, and real handovers. This episode is an extended version of my t

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