ISO 7933:2004 热的环境 人体工学 利用对已知的热疲劳的计算对热应力的分析测定和说明

标准编号：ISO 7933:2004

中文名称：热的环境 人体工学 利用对已知的热疲劳的计算对热应力的分析测定和说明

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：2004-08

标准范围

ISO 7933:2004规定了一种用于分析评价和解释受试者在热环境中经历的热应力的方法。它描述了一种预测人体响应工作条件将产生的出汗率和内部核心温度的方法。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受试者经历的热应力的影响。通过这种方式，该国际标准可以确定哪些参数或参数组应该被修改，以及修改到什么程度，以降低生理应变的风险。ISO 7933:2004的主要目标如下:评估标准受试者在可能导致核心温度过度升高或失水的条件下的热应力；确定生理应变可接受的暴露时间（预期无物理损伤）。在该预测模式的上下文中，这些暴露时间被称为“最大允许暴露时间”。ISO 7933:2004不预测个体受试者的生理反应，而只考虑健康状况良好、适合所从事工作的标准受试者。因此，它旨在被人体工程学专家、工业卫生学家等使用。，以评估工作条件。

ISO 7933:2004 specifies a method for the analytical evaluation and interpretation of the thermal stress experienced by a subject in a hot environment. It describes a method for predicting the sweat rate and the internal core temperature that the human body will develop in response to the working conditions.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 subject. In this way, this International Standard makes it possible to determine which parameter or group of parameters should be modified, and to what extent, in order to reduce the risk of physiological strains.The main objectives of ISO 7933:2004 are the following:

1. the evaluation of the thermal stress in conditions likely to lead to excessive core temperature increase or water loss for the standard subject;
2. the determination of exposure times with which the physiological strain is acceptable (no physical damage is to be expected). In the context of this prediction mode, these exposure times are called "maximum allowable exposure times".

ISO 7933:2004 does not predict the physiological response of individual subjects, but only considers standard subjects in good health and fit for the work they perform. It is therefore intended to be used by ergonomists, industrial hygienists, etc., to evaluate working conditions.

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