Managing heat stress 2011


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Hot and humid weather creates a higher risk of developing heat stress illnesses ranging from heat rash to life-threatening heat stroke. Heat stress is preventable if the proper precautions are taken. I put together a Health and Safety training PowerPoint presentation for managing heat stress. Feel free to download it and share with others.

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  • TrueTrueFalseTrueFalse (16 ounces per hour, not every 4 hours)FalseTrueTrueFalseFalse (by the time someone is thirsty, he/she is already 10% dehydrated)False (caffeine increases dehydration)True
  • Managing heat stress 2011

    1. 1. MANAGING HEAT STRESS<br />Prepared by: Dan Sawall<br /><br /> <br />
    2. 2. MANAGING HEAT STRESS<br />Heat stress can be more than a minor inconvenience for those who work in extremely warm conditions. Knowing how to prevent, identify and treat its symptoms can literally save lives.<br /><ul><li>Heat from the sun or work environment can create a life threatening emergency.
    3. 3. Heat stress occurs when the core body temperature rises and cannot be cooled by sweating.
    4. 4. Our bodies maintain a fairly constant internal temperature even though exposed to varying environmental temperatures.
    5. 5. To keep internal body temperatures within safe limits in hot conditions, the body gets rid of excess heat by evaporating sweat and varying the blood flow to the skin. These responses are controlled by the brain and usually occur when the blood exceeds 98.6º F.</li></li></ul><li>Effects of Heat Stress On Your Body<br /><ul><li>Skin rash
    6. 6. Muscle cramps
    7. 7. Exhaustion
    8. 8. Fainting
    9. 9. Heat Stroke - life threatening!</li></li></ul><li>External Factors Affecting Heat Stress<br /><ul><li>Humidity
    10. 10. Radiant heat (hot equipment, vessels and sun)
    11. 11. Air movement
    12. 12. Clothing
    13. 13. Work rate (difficulty of work)</li></ul>If these not controlled, HEAT STRESS MAY OCCUR!<br />
    14. 14. Heat Rash<br />Heat rash is the most common problem in hot work environments.<br />Symptoms<br /><ul><li>Prickly heat shown as red bumps on the skin; usually appears in areas where the clothing is restrictive
    15. 15. Sweat ducts plug; sweat cannot freely evaporate from skin</li></ul>Prevention<br /><ul><li>Wear breathable clothing (e.g. cotton)
    16. 16. Cleanse skin thoroughly</li></ul>Treatment<br /><ul><li>Keep skin dry
    17. 17. Apply calamine lotion
    18. 18. Sleep in cool location</li></li></ul><li>Heat Cramps<br />Cramps may result after excessive sweating and dehydration.<br />Symptoms <br /><ul><li>Shriveled skin, sunken eyes, dry mouth / tongue
    19. 19. Severe pain and cramps in legs and abdomen
    20. 20. Weakness, dizziness or fainting
    21. 21. Profuse sweating
    22. 22. Headaches</li></ul>Treatment <br /><ul><li>Increase fluid / salt intake
    23. 23. Drink at least 16 ounces of water per hour
    24. 24. Rest and move to a cool place</li></li></ul><li>Heat Exhaustion<br />Blood moves toward the outer body to remove heat. Blood pools in the skin leaving less for the brain.<br />Symptoms<br /><ul><li>Fatigue, headache, dizziness, profuse sweating, rapid pulse, thirst, loss of appetite, nausea, vomiting and fainting</li></ul>Treatment <br /><ul><li>Get to a shaded area and cool off; use cold wet towels or ice and fan
    25. 25. Drink lots of water; may need IV
    26. 26. Loosen clothing and elevate legs above heart
    27. 27. If condition worsens, seek medical attention immediately</li></ul>If left untreated, heat exhaustion can lead to HEAT STROKE!<br />
    28. 28. Heat Stroke<br />A medical emergency and life-threatening condition caused by failure of heat-regulating mechanisms of the body due to high heat and humidity. The body’s core temperature rises and stops sweating.<br />Symptoms<br /><ul><li>Hot, red skin and NO sweating
    29. 29. Rapid pulse, confusion and nausea
    30. 30. Possible convulsions and unconsciousness</li></ul>Treatment <br /><ul><li>Move to a cooler location and loosen clothing
    31. 31. Immerse in cool water or wrap in wet sheets
    32. 32. Apply cold compresses to head, neck and groin</li></ul>SEEK MEDICAL ATTENTION IMMEDIATELY!<br />
    33. 33. Prevention<br /><ul><li>Drink lots of water (at least 16 ounces per hour), even if not thirsty
    34. 34. Start drinking water before you start work
    35. 35. Avoid beverages containing alcohol or caffeine
    36. 36. Get used to the heat for short periods, followed by longer periods of work
    37. 37. Alternate work and rest breaks, with longer breaks in cooler areas
    38. 38. Work in teams to limit strenuous activity</li></li></ul><li>Prevention (cont.)<br /><ul><li>Ensure adequate ventilation
    39. 39. Wear lightweight, loose-fitting, light-colored clothing (e.g. cotton)
    40. 40. Notify your Supervisor at first sign of any problem
    41. 41. Keep an eye on your coworkers. Use a buddy system.
    42. 42. Check your urine color for signs of dehydration</li></li></ul><li>WARNING!<br /><ul><li>In the course of a day's work in the heat, you could sweat as much as 2-3 gallons.
    43. 43. Drink an adequate amount of water, even when you are not thirsty.
    44. 44. You should drink 16 ounces of fluids every hour to replenish the necessary fluids in the body.
    45. 45. By the time you feel thirsty, you are already 10% dehydrated.
    46. 46. Urine color gives indication of hydration state (i.e. if urine is dark, drink more water).</li></li></ul><li>What to Do When a Worker is Ill from Heat<br /><ul><li>Call a First Responder / Supervisor for help. If they are not available, call 911
    47. 47. Have someone stay with the worker until help arrives
    48. 48. Move the worker to a cooler / shaded area
    49. 49. Remove outer clothing
    50. 50. Fan and mist the worker with water; apply ice (ice bags or ice towels)
    51. 51. Provide cool drinking water, if able to drink</li></ul>IF THE WORKER IS NOT ALERT or seems confused, this may be a heat stroke. CALL 911 IMMEDIATELY and apply ice as soon as possible!<br />
    52. 52. Quiz<br />Circle the best answer to each statement.<br />In the course of a day’s work in heat, a person can sweat as much as 2-3 gallons. True or False<br />Heat stress occurs when the core body temperature rises and cannot be cooled by sweating.True or False<br />Humidity is not an external factor associated with heat stress.True or False<br />Heat rash occurs when sweat ducts plug and sweat cannot freely evaporate from the skin. True or False<br />Heat cramps are treated by drinking 16 ounces of water every 4 hours. True or False<br />Headaches and dizziness are not symptoms of heat exhaustion. True or False<br />Hot, red skin and no sweating are symptoms of heat stroke. True or False<br />If someone is having a heat stroke, seek medical attention immediately. True or False<br />Applying ice is not recommended for treating someone taken ill from the heat. True or False<br />If you are not thirsty, you must be well-hydrated. True or False<br />Drinking beverages with caffeine is a good way to prevent dehydration. True or False<br />Darker urine color is an indicator of dehydration. True or False<br />