ISO 7933:2023 热环境的人类工效学 用预测热应变计算的热应力的分析测定和解释

标准编号：ISO 7933:2023

中文名称：热环境的人类工效学 用预测热应变计算的热应力的分析测定和解释

英文名称：Ergonomics of the thermal environment — Analytical determination and interpretation of heat stress using calculation of the predicted heat strain

发布日期：2023-07

标准范围

本文件描述了一个模型【预测热应变（PHS）模型】，用于分析确定和解释普通人在炎热环境中经历的热应力（就失水和直肠温度而言），并确定了95？暴露人群的%（直肠最大耐受温度和最大耐受失水不超过暴露人群的95？%）。在该预测模型中，特别是在热平衡中使用的各种术语显示了环境的不同物理参数对普通人经历的热应力的影响。以这种方式，该文献使得可以确定哪些参数或参数组可以改变以及改变到什么程度，以降低过度生理压力的风险。在目前的形式下，这种评估方法不适用于穿着特殊防护服（如全反光服、主动冷却和通风、不渗透工作服）的情况。这份文件不预测个人的生理反应，而只考虑身体健康并适合他们所从事的工作的普通人。因此，它旨在由人体工程学专家和工业卫生学家等使用，因为结果可能需要专家解释。ISO中给出了关于如何以及何时使用该模型的建议？8025.

This document describes a model [the predicted heat strain (PHS) model] for the analytical determination and interpretation of the thermal stress (in terms of water loss and rectal temperature) experienced by an average person in a hot environment and determines the maximum allowable exposure times within which the physiological strain is acceptable for 95 % of the exposed population (the maximum tolerable rectal temperature and the maximum tolerable water loss are not exceeded by 95 % of the exposed people).

The various terms used in this prediction model and, in particular, in the heat balance, show the influence of the different physical parameters of the environment on the thermal stress experienced by the average person. In this way, this document makes it possible to determine which parameter or group of parameters can be changed, and to what extent, in order to reduce the risk of excessive physiological strain.

In its present form, this method of assessment is not applicable to cases where special protective clothing (e.g. fully reflective clothing, active cooling and ventilation, impermeable coveralls) is worn.

This document does not predict the physiological response of an individual person, but only considers average persons in good health and fit for the work they perform. It is therefore intended to be used by, among others, ergonomists and industrial hygienists, as the outcomes can require expert interpretations. Recommendations about how and when to use this model are given in ISO 8025.

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