Nhiệt căng thẳng có thể phát sinh từ tiếp xúc với môi trường hoặc nóng hoặc lạnh. Đối với nhiều môi trường làm việc, nó được phổ biến cho được thái cực cũng như biến động rộng rãi trong nhiệt độ, vì điều này, điều quan trọng là hiểu stress nhiệt. Chương này sẽ tập trung vào các yếu tố và các thông số được sử dụng để mô tả stress nhiệt, và, ngoài ra, sẽ thảo luận về tác động mà những điều kiện này có thể sản xuất cá nhân, trong quá trình bình thường của công việc. | Chapter 5 Thermal Stress Thermal stress can arise from exposures to either hot or cold environments. For a wide variety of work environments it is common for there to be extremes as well as wide fluctuations in the temperature because of this it is important to understand thermal stress. This chapter will focus on the factors and parameters that are used to characterize thermal stress and in addition will discuss the effects that these conditions can produce on individuals who in the normal course of their work may be exposed to them. RELEVANT DEFINITIONS Thermal Stress Heat Stress Heat Stress is a condition that arises from a variety of factors among the most important of which are 1. the ambient temperature 2. the relative humidity 3. the level of effort required by the job and 4. the clothing being worn by an exposed individual. An individual who is experiencing Heat Stress will tend to exhibit an array of measurable symptoms which can include some or all of the following 1. an increased pulse rate 2. a greater rate of perspiration and 3. an increase in the individual s body temperature. Heat Stress Disorders The five physical disorders that can arise from heat stress listed in increasing order of severity are as follows 1. Heat Rash A heat rash also often referred to as prickly heat tends to arise in an individual after a period of prolonged sweating. It is characterized by an itchy reddening of the skin and a sudden decrease in the rate of perspiration. 2. Cramps Heat cramps arise as a result of prolonged periods of a combination of sweating and a lack of fluid and salt intake. Such a situation causes an overall body electrolyte imbalance and the primary symptomatic manifestation is severe muscle cramps most frequently in the abdomen. 3. Dehydration Dehydration is the result of excessive fluid loss. Among its most common causes are excessive sweating vomiting diarrhea and or alcohol consumption. Symptoms of dehydration are often subtle but include exhaustion .
