The effectiveness of sprinklers in protecting hospital patients in the room of fire origin was investigated by 14 experiments with a residential-grade sprinkler system, and by two free-burns. The fire load was UL 1626 corner fire. Tenability conditions were evaluated for the UL 1626 corner fire using gas temperature and species concentration measurements, and by calculating the fractional effective dose (FED) and fractional irritant concentration (FIC) with the comprehensive model of Purser and a more simplified method of ISO 13571. In the sprinklered tests, the average FED at 15 minutes was 0.8 ± 1 with 95% confidence, when using the Purser's method, and 0.2 ± 0.2 with ISO 13571. The difference was mainly caused by the assumption in the Purser's method that all NO_x gases behave like NO₂. Ignoring the NO contributions decreased the Purser's FED values very close to those of ISO 13571. In nonsprinklered tests, the FED and FIC values indicated definite incapacitation and possibly death 3 minutes after ignition. The sprinklers effectively increase the possibility of surviving, but the toxic effects may still be dangerous. In hospital and health care environments, many of the exposed persons may have lower-than-average tolerance.

中文翻译：

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病房火灾中人体承受能力和喷淋保护的实验研究

通过使用住宅级喷水灭火系统进行 14 次实验和两次自由燃烧，研究了喷水灭火装置在起火房间保护医院患者的有效性。火灾荷载是 UL 1626 角火。使用气体温度和物种浓度测量，并通过使用 Purser 的综合模型和更简化的 ISO 13571 方法计算分数有效剂量 (FED) 和分数刺激物浓度 (FIC)，评估了 UL 1626 角火的稳定性条件。在喷洒测试中，使用 Purser 方法时，15 分钟时的平均 FED 为 0.8 ± 1，置信度为 95%，使用 ISO 13571 时为 0.2 ± 0.2。差异主要是由于 Purser 方法中假设所有 NO _x气体的行为类似于 NO ₂. 忽略 NO 的贡献会降低 Purser 的 FED 值，非常接近 ISO 13571 的值。在不喷水的测试中，FED 和 FIC 值表明点燃后 3 分钟肯定会丧失工作能力并可能死亡。洒水器有效地增加了生存的可能性，但毒性作用可能仍然是危险的。在医院和医疗保健环境中，许多接触者的耐受性可能低于平均水平。