The main purpose of this study was to characterise the thermal environment and risk of heat burns of wildland firefighters in relation to the suppression tasks performed in real wildland fires. Measurements of air temperature and heat flux were performed by affixing heat flux and ambient temperature sensors on the outer and inner surface of the wildland firefighters’ protective garments. Suppression time was divided according to the task performed in direct attack, backfire, mop-up and patrol. These tasks accounted for 95.2 ± 78.4, 103.3 ± 41.7, 80.5 ± 24.8 and 71.3 ± 53.0 min, respectively. Overall, the mean heat flux was higher during backfire (2165 ± 1604 W m⁻²) than in direct attack (558 ± 344 W m⁻²), mop-up (371 ± 254 W m⁻²) and patrol (354 ± 307 W m⁻²). However, during the direct attack, average and maximum thermal dose was ~94 and ~110 (kW m⁻²)^4/3 s, respectively. These values are within the threshold of pain and first-degree burns. However, no first-degree burns were reported for the sample. Overall, the thermal exposure measured may be considered light. However, high thermal exposure values may be obtained at specific moments, which may cause first-degree burns in wildland firefighters.

这项研究的主要目的是与在真实的野火中执行的扑灭任务有关，表征野火消防员的热环境和热灼伤风险。空气温度和热通量的测量是通过在野外消防员的防护服的内外表面安装热通量和环境温度传感器来进行的。抑制时间根据在直接攻击，逆火，扫荡和巡逻中执行的任务进行划分。这些任务分别占95.2±78.4、103.3±41.7、80.5±24.8和71.3±53.0分钟。总体而言，逆火期间的平均热通量（2165±1604 W m ^-2）高于直接攻击（558±344 W m ^-2），扫荡（371±254 W m ^-2）和巡逻（354± 307立方米^-2）。然而，在直接攻击期间，平均和最大热剂量分别为〜94和〜110（kW m ^-2）^4/3  s。这些值在疼痛和一级烧伤的阈值之内。但是，没有关于样品的一级烧伤的报道。总体而言，测得的热暴露可被认为是光。但是，在特定时刻可能会获得较高的热暴露值，这可能会导致野外消防员遭受一度烧伤。