1.1 本指南旨在建立识别和管理铸造环境中职业热应力和热应变的最佳实践。 1.2 铸造热应力和热应变管理指南的目标如下: 1.2.1 提供识别热应力和热应变的客观框架，以及 1.2.2 促进使用最佳实践来管理热暴露，以最大限度地减少热应激并预防与热相关的疾病。 1.3 本指南介绍了管理铸造厂热应力和热应变的必要程序。 1.4 本指南的关键要素包括热应力和热应变的定义，以及识别、沟通、管理和控制热应力和热应变以防止热的技术- 相关疾病。 1.5 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 本指南旨在描述铸造厂用于预防或管理热应变和热相关疾病的热管理计划要素。具体而言，指南: 4.1.1 提供了识别热应力和热应变的客观框架，以及 4.1.2 促进使用最佳做法来管理热暴露，以最大限度地减少热应激并预防与热相关的疾病。

1.1 This guide is intended to establish best practices for recognizing and managing occupational heat stress and heat strain in foundry environments. 1.2 Objectives of the foundry heat stress and heat strain management guide are as follows: 1.2.1 Provide an objective framework for recognizing heat stress and heat strain, and 1.2.2 Facilitate use of best practices to manage heat exposures to minimize heat strain and prevent heat-related illness. 1.3 In this guide, procedures necessary to manage heat stress and heat strain in foundries are described. 1.4 Key elements of this guide include definitions of heat stress and heat strain, plus techniques for recognizing, communicating, managing, and controlling heat stress and heat strain to prevent heat-related illnesses. 1.5 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This guide is intended to describe heat management program elements that foundries use to prevent or manage heat strain and heat-related illness. Specifically, the guide: 4.1.1 Provides an objective framework for recognizing heat stress and heat strain, and 4.1.2 Facilitates use of best practices to manage heat exposures to minimize heat strain and prevent heat-related illness.