Report on Study of the Fire Service Training Environment: Evaluation of Ventilation-Controlled Fires in L-Shaped Training Props
Joseph Willi
October 17, 2018

As part of the DHS/AFG grant titled “Study of the Fire Service Training Environment: Safety, Fidelity, and Exposure”, UL FSRI conducted 37 experiments to evaluate ventilation-controlled fires in L-shaped training props with the following wall constructions: lightweight gypsum board over insulation, a single layer of corrugated steel, and rolled steel sheeting over mineral wool insulation with corrugated steel as its backing. Fire conditions produced by three fuel packages were utilized during the experiments — one containing furnishings composed primarily of synthetic materials and two containing wood-based fuels compliant with NFPA 1403. The main objectives of this study were to:

  • Assess the repeatability of thermal environments created by ventilation-controlled fires in each type of L-shaped prop
  • Compare the conditions produced by ventilation-controlled fires from various fuel packages between the different prop constructions
  • Study the effects of ventilation changes on the fire environment in L-shaped training props
  • Evaluate the response of thermal conditions during interior suppression in each type of prop

The report for this experimental series contains:

Discussion of the prop degradation over the range of experiments


Detailed comparisons of fire development between the various props and fuel loads


And much more!

Access the report HERE

UL Firefighter Safety Research Institute is dedicated to increasing firefighter knowledge to reduce injuries and deaths in the fire service and in the communities they serve.