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jddwba� CDIM Corporate Safety Program I� HSP-10. Heat and Cold Stress Management ENGINEERING Rev. 0 5/21/2020 duration, protective clothing and personal protective equipment worn by employees. Heat Illness A serious medical condition resulting from the body's inability to cope with a particular heat load, and includes heat cramps, heat exhaustion, heat syncope and heat stroke. Hypothermia When body loses heat faster than it can produce it, leading to dangerously low body temperatures. Hypothermia is often caused by exposure to cold weather or immersion in cold water. Primary treatments for hypothermia are methods to warm the body back to a normal temperature. Personal Risk Factors such as an individual's age, degree of acclimatization, health, water Factors for consumption, alcohol consumption, caffeine consumption, and use of prescription Heat Illness medications that affect the body's water retention or other physiological responses to heat. Shade The blockage of direct sunlight. One indicator that blockage is sufficient is when objects do not cast a shadow in the area of blocked sunlight. Shade is not adequate when heat in the area of shade defeats the purpose of shade, which is to allow the body to cool. For example, a car sitting in the sun does not provide acceptable shade to a person inside it, unless the car is running with air conditioning. Shade may be provided by any natural or artificial means that does not expose employees to unsafe or unhealthy conditions. Temperature The dry bulb temperature in degrees Fahrenheit obtainable by using a thermometer to measure the outdoor temperature in an area where there is no shade. While the temperature measurement must be taken in an area with full sunlight, the bulb or sensor of the thermometer should be shielded while taking the measurement, e.g., with the hand or some other object, from direct contact by sunlight. 4.0 PROCEDURE This procedure describes protection from two of the most commonly encountered environmental hazards found on project sites: heat and cold. Wearing PPE puts workers at considerable risk of heat stress. Heat stress is caused by a number of interacting factors including ambient temperature, radiant sunshine, wind speed, workload, clothing, and the individual heat tolerance characteristics of the worker. Heat Stress Safety Procedures As temperatures increase, the risk of heat stress or illness increases. Protective measures shall be implemented for each risk level associated with the following temperature ranges: • Lower Risk—Temperatures below 91 degrees F. • Moderate Risk—Temperatures between 91 and 103 degrees F. • High Risk—Temperatures between 103 and 115 degrees F. • Very High to Extreme Risk—Temperatures greater than115 degrees F. Page 2 of 9