Heat stress


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Heat Stress Safety

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  • Great Power Point on heat stress! Thank you. Here’s a link to another great free resource on heat stress - http://www.safetyawakenings.com/11-cool-tips-for-working-in-extreme-heat/
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Heat stress

  1. 1. Heat Stress & Personal Protective Equipment May Safety Meeting
  2. 2. Heat Stress
  3. 3. Heat Stress <ul><li>Heat stress occurs when high body temperatures break down the body’s ability to function normally. </li></ul><ul><ul><li>Problems resulting from heat stress </li></ul></ul><ul><ul><ul><li>Dehydration </li></ul></ul></ul><ul><ul><ul><li>Heat Cramps – Usually first sign of heat stress </li></ul></ul></ul><ul><ul><ul><li>Heat Exhaustion </li></ul></ul></ul><ul><ul><ul><li>Heat Stroke </li></ul></ul></ul>
  4. 4. Heat cramps <ul><li>Painful muscle spasms that occur when a person drinks large amounts of water but fails to replace the body’s salt loss </li></ul><ul><ul><li>Usually controlled by drinking fluids that contain electrolyte replacements </li></ul></ul>
  5. 5. Heat Exhaustion <ul><li>Some Symptoms of Heat Exhaustion </li></ul><ul><ul><li>Intense thirst </li></ul></ul><ul><ul><li>Fatigue </li></ul></ul><ul><ul><li>Weakness </li></ul></ul><ul><ul><li>Dehydration </li></ul></ul><ul><ul><li>Moist, clammy skin </li></ul></ul><ul><ul><li>Pale or flushed complexion </li></ul></ul><ul><ul><li>Body temp normal or slightly higher </li></ul></ul><ul><li>Typically treated by resting in a cool place and replacing fluids and minerals </li></ul>
  6. 6. <ul><li>If heat cramps or heat exhaustion is not properly treated, the condition can quickly escalate into a HEAT STROKE </li></ul>Heat Stroke <ul><ul><ul><li>Body will no longer be able to cool itself </li></ul></ul></ul><ul><ul><ul><li>Temperatures can rise dangerously high resulting in brain damage or death </li></ul></ul></ul>
  7. 7. <ul><ul><li>Hot, dry, flushed skin </li></ul></ul><ul><ul><li>Very small pupils </li></ul></ul><ul><ul><li>Extremely high body temperature (106 o or higher) </li></ul></ul><ul><ul><li>Mental confusion, convulsions or coma </li></ul></ul><ul><li>Symptoms of a Heat Stroke </li></ul>
  8. 8. <ul><li>Your body tries to prevent heat stress by maintaining your “normal” body temperature – 98.6 ○ F </li></ul><ul><ul><li>As body temp rises, more blood rises to the skin releasing heat </li></ul></ul><ul><ul><li>Sweating – utilized by the body to help stabilize internal temp </li></ul></ul><ul><ul><ul><li>Warm sweat releases heat from the body </li></ul></ul></ul><ul><ul><ul><li>Cools the skin as the sweat evaporates </li></ul></ul></ul>Heat Stress
  9. 9. What is Dehydration? <ul><li>Dehydration occurs when the amount of water leaving the body is greater than the amount being taken in. </li></ul>In a normal day, a person has to drink a significant amount of water to replace this routine loss. The body is very dynamic and always changing. This is especially true with water levels in the body. We lose water routinely when
  10. 10. <ul><li>When the body tries to maintain the “normal” temperature, fluids & minerals are used </li></ul><ul><ul><li>Replacing fluids and minerals is essential for the body to function properly </li></ul></ul>Heat Stress
  11. 11. Heat Stress <ul><ul><ul><li>Human body can lose up to 1 quart of fluid an hour through sweating </li></ul></ul></ul><ul><ul><ul><ul><li>Recommendation: Drink 5-7 ounces of liquid every 15 minutes </li></ul></ul></ul></ul><ul><ul><ul><ul><li>DO NOT depend on your thirst alone to tell you how much and how often to drink </li></ul></ul></ul></ul><ul><ul><ul><li>Minerals ( such as Potassium and Phosphate) are also lost </li></ul></ul></ul><ul><ul><ul><ul><li>Electrolyte drinks are often used to replace minerals </li></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>Gatorade, PowerAde, etc </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><li>Eating foods that replacement mineral loss (i.e. bananas, kiwi, etc.) </li></ul></ul></ul></ul><ul><ul><ul><li>Drinking alcohol or caffeinated drinks when you are hot or after heavy exertion encourages fluid loss </li></ul></ul></ul>
  12. 12. Heat Stress & Dehydration <ul><li>The body can lose significant amounts of water when it tries to cool itself by sweating. </li></ul><ul><li>The body uses a significant amount of water in the form of sweat to cool itself. </li></ul>Depending upon weather conditions, a brisk walk will generate up to 16 ounces of sweat (one pound of water).
  13. 13. Treating a Heat Stress Victim <ul><li>Ice packs or wet towels at neck, armpits, groin area </li></ul><ul><li>Loosen clothing </li></ul><ul><li>Sipping cool water, juice, or sports drinks if tolerated </li></ul><ul><li>Notify the Supervisor and / or the Safety Office immediately </li></ul><ul><li>Remove the employee from the heat and/or sunlight </li></ul>
  14. 14. Methods to Prevent Heat Stress <ul><li>Work Practices </li></ul><ul><ul><li>Availability of drinking water </li></ul></ul><ul><ul><li>Providing electrolyte replacements – Squincher / Gatorade / etc. </li></ul></ul><ul><ul><li>Training </li></ul></ul><ul><li>Engineering controls </li></ul><ul><ul><li>Fans </li></ul></ul><ul><ul><li>Spot coolers / Air conditioning vents </li></ul></ul>
  15. 15. Acclimatization <ul><ul><li>Employees who are new or who have been out of the heat for 5 or more days may notice that they may not be adjusted to the heat in the same manner as before </li></ul></ul><ul><ul><ul><li>May notice symptoms such as </li></ul></ul></ul><ul><ul><ul><ul><li>Slightly higher body temperature </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Higher pulse rate </li></ul></ul></ul></ul><ul><ul><ul><ul><li>General discomfort and fatigue </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Profuse sweating </li></ul></ul></ul></ul><ul><ul><ul><li>These symptoms are considered to be “normal” as the body gets adjusted to the heat, which may take from 3 – 14 days </li></ul></ul></ul>
  16. 16. <ul><ul><ul><li>Drink plenty of fluids </li></ul></ul></ul><ul><ul><ul><li>Take breaks in break rooms where the temperature is cooler </li></ul></ul></ul>While becoming acclimatized, it is important to <ul><ul><ul><li>Allow your body time to get used to the heat – don’t expect the same tolerance as before if you have been out of the heat for a number of days or have little to no exposure to the heat </li></ul></ul></ul><ul><ul><ul><li>On days off, plan to be outdoors and active in the heat as much as possible. </li></ul></ul></ul><ul><ul><ul><ul><li>Being a “couch potato” on your days off does not keep you acclimatized as well as being active while you are off </li></ul></ul></ul></ul>
  17. 17. <ul><li>Make an effort to replace lost fluids and minerals </li></ul><ul><li>Take periodic breaks from the heat </li></ul><ul><li>Wear the appropriate type of clothing for the work area </li></ul><ul><li>Stay physically fit and heat tolerant </li></ul>Methods to Prevent Heat Stress *WATER is usually best; sports drinks are also good
  18. 18. <ul><li>Learn to recognize early signs and symptoms </li></ul><ul><li>Avoid Caffeine and Alcohol </li></ul>Food and drinks containing CAFFEINE or ALCOHOL* will remove water from body cells and INCREASE URINATION /FLUID LOSS/DEHYDRATION Many sodas contain caffeine as well as coffee or tea. READ THE LABEL FIRST Methods to Prevent Heat Stress