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Heat Stress
Hot work environments
• Outdoor work in hot weather
• Foundry work or smelting
• Brick-firing, ceramics or glass
manufactu...
Hot work environments
• Rubber manufacture
• Work in bakeries,
confectioneries, kitchens
• Laundry operations
• Plastic Mo...
Personal risk factors
• Age, weight, physical fitness
• Metabolism, medications, alcohol or
drugs
• Water and caffeine con...
Environmental risk factors
•
•
•
•

Air temperature
Humidity
Radiant heat
Conductive heat
sources
• Protective clothing
• ...
Fatigue
•
•
•
•

Blood circulates to upper layers of skin
Less blood for internal organs
Performance declines
Coordination...
Response to fatigue
• Rest in cool, shaded area
• Take heat-relief breaks
• Gradually adjust to working in heat

3b
Heat rash
•
•
•
•
•
•

Results from the body’s natural cooling
Body releases heat through sweat
Sweat ducts become plugged...
Response to heat rash
•
•
•
•

Rest in a cool area
Wash the skin
Allow skin to dry
Seek medical attention, if
infected
• R...
Fainting
• Blood accumulates in
lower part of body
• Brain does not get
adequate blood supply
• Sudden loss of
consciousne...
Response to fainting
• Rest in cool, shaded area
• Gradually adjust to working in heat
• Move around to circulate blood

5...
Muscle cramps
Occurs in tired muscles when the worker
sweats profusely and drinks large
quantities of water

6a
Muscle cramps
• Painful contractions in the muscle
• Uncomfortable and temporarily
disabling
• Low salt level can cause sp...
Response to muscle cramps
• Rest in cool, shaded area
• Drink about 5 to 7 ounces of fluids
every 15 to 20 minutes
• Avoid...
Response to muscle cramps
• Drink salted or carbohydrate
replacement liquids for recovery
• Gradually adjust to working in...
Heat exhaustion
• Large amounts of fluid lost by sweating
• Symptoms resemble early heat stroke
•
•
•
•

Physically weak, ...
Heat exhaustion
•
•
•
•

Person continues to sweat
Skin is clammy and moist
Body temperature remains normal
Person may vom...
Response to heat exhaustion
• Rest in a cool, shaded area
• Drink about 5 to 7 ounces of fluids
every 15 to 20 minutes
• L...
Heat stroke
• Life-threatening condition
• Body’s temperature regulatory system
fails
• Sweating becomes inadequate

8a
Heat stroke
•
•
•
•

Person’s skin is hot and dry
Skin appears red in color
o

Body temperature is above 103 F
Person is m...
Response to heat stroke
•
•
•
•
•

Get immediate medical attention
Remove to cool, shaded area
Soak clothing with cool wat...
What can you do?
• Report symptoms or signs immediately
• Respond to heat illness
• Know company procedures

8d
Measuring heat exposures
• Heat index system
• Health and safety agency testing

9a
Measuring heat exposures
Work classifications:
•
•
•
•
•
•

Light hand work
Heavy hand work
Heavy work with one arm
Light ...
Controlling heat exposure
Engineering controls
•
•
•
•
•
•
•

Shade
Ventilation
Air cooling
Air circulation
Shielding from...
Controlling heat exposure
Personal protective equipment
•
•
•
•

Ice vests
Water-cooled garments
Air supply systems
Wet cl...
Controlling heat exposure
Work practices
•
•
•
•
•
•
•
•
•

Use intermittent rest periods
Drink small quantities of water ...
REVIEW
If you notice a person with the following
symptoms:
Physically weak, fatigued, faint, giddy,
irritable, mentally co...
Review Cont.
If a person’s skin is hot and dry
skin appears red in color
body temperature is above 103°F
person is mentall...
Review Cont.
What do you do when a Coworker is ill
from the heat?
Call a Supervisor for help, or 911 if
Supervisor is not ...
Review Cont.
Name some Preventive Measures:
•Ventilation
•Air cooling
•Air circulation
•Ice vests
•Water-cooled garments
•...
Questions?
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Heat Stress Training

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Heat Stress Training

  1. 1. Heat Stress
  2. 2. Hot work environments • Outdoor work in hot weather • Foundry work or smelting • Brick-firing, ceramics or glass manufacture 1a
  3. 3. Hot work environments • Rubber manufacture • Work in bakeries, confectioneries, kitchens • Laundry operations • Plastic Mold Operations 1b
  4. 4. Personal risk factors • Age, weight, physical fitness • Metabolism, medications, alcohol or drugs • Water and caffeine consumption • Medical conditions • Acclimatization 2a
  5. 5. Environmental risk factors • • • • Air temperature Humidity Radiant heat Conductive heat sources • Protective clothing • PPE 2b
  6. 6. Fatigue • • • • Blood circulates to upper layers of skin Less blood for internal organs Performance declines Coordination and alertness decline 3a
  7. 7. Response to fatigue • Rest in cool, shaded area • Take heat-relief breaks • Gradually adjust to working in heat 3b
  8. 8. Heat rash • • • • • • Results from the body’s natural cooling Body releases heat through sweat Sweat ducts become plugged Skin inflammation develops Prickly rash is uncomfortable Rash can become infected 4a
  9. 9. Response to heat rash • • • • Rest in a cool area Wash the skin Allow skin to dry Seek medical attention, if infected • Regularly bathe and dry skin 4b
  10. 10. Fainting • Blood accumulates in lower part of body • Brain does not get adequate blood supply • Sudden loss of consciousness 5a
  11. 11. Response to fainting • Rest in cool, shaded area • Gradually adjust to working in heat • Move around to circulate blood 5b
  12. 12. Muscle cramps Occurs in tired muscles when the worker sweats profusely and drinks large quantities of water 6a
  13. 13. Muscle cramps • Painful contractions in the muscle • Uncomfortable and temporarily disabling • Low salt level can cause spasms • Too much salt can cause cramps 6b
  14. 14. Response to muscle cramps • Rest in cool, shaded area • Drink about 5 to 7 ounces of fluids every 15 to 20 minutes • Avoid caffeinated beverages or alcohol 6c
  15. 15. Response to muscle cramps • Drink salted or carbohydrate replacement liquids for recovery • Gradually adjust to working in heat 6d
  16. 16. Heat exhaustion • Large amounts of fluid lost by sweating • Symptoms resemble early heat stroke • • • • Physically weak, fatigued, or faint Giddy, irritable, or mentally confused Nauseous Headache, dizziness, and/or lightheadedness 7a
  17. 17. Heat exhaustion • • • • Person continues to sweat Skin is clammy and moist Body temperature remains normal Person may vomit or lose consciousness 7b
  18. 18. Response to heat exhaustion • Rest in a cool, shaded area • Drink about 5 to 7 ounces of fluids every 15 to 20 minutes • Lay person down • Seek medical attention, if severe 7c
  19. 19. Heat stroke • Life-threatening condition • Body’s temperature regulatory system fails • Sweating becomes inadequate 8a
  20. 20. Heat stroke • • • • Person’s skin is hot and dry Skin appears red in color o Body temperature is above 103 F Person is mentally confused or delirious • Person can have convulsions or become unconscious 8b
  21. 21. Response to heat stroke • • • • • Get immediate medical attention Remove to cool, shaded area Soak clothing with cool water Fan body vigorously Never leave unattended 8c
  22. 22. What can you do? • Report symptoms or signs immediately • Respond to heat illness • Know company procedures 8d
  23. 23. Measuring heat exposures • Heat index system • Health and safety agency testing 9a
  24. 24. Measuring heat exposures Work classifications: • • • • • • Light hand work Heavy hand work Heavy work with one arm Light work with two arms Moderate work with the body Heavy work with the body 9b
  25. 25. Controlling heat exposure Engineering controls • • • • • • • Shade Ventilation Air cooling Air circulation Shielding from radiant heat sources Insulating radiant heat sources Use of power assists and tools 10a
  26. 26. Controlling heat exposure Personal protective equipment • • • • Ice vests Water-cooled garments Air supply systems Wet clothing, headbands, or bandanas 10b
  27. 27. Controlling heat exposure Work practices • • • • • • • • • Use intermittent rest periods Drink small quantities of water frequently Use relief workers Use the buddy system Pace the work Reduce physical demands Provide cool recovery or shaded rest areas Schedule work for cooler times of the day Wear light, loose-fitting, breathable clothing 10c
  28. 28. REVIEW If you notice a person with the following symptoms: Physically weak, fatigued, faint, giddy, irritable, mentally confused, nauseous, headache, dizziness, and/or lightheadedness. These are signs of? Heat Exhaustion
  29. 29. Review Cont. If a person’s skin is hot and dry skin appears red in color body temperature is above 103°F person is mentally confused or delirious person can have convulsions or become unconscious These are signs of? Heat Stroke
  30. 30. Review Cont. What do you do when a Coworker is ill from the heat? Call a Supervisor for help, or 911 if Supervisor is not available. Move to a cooler location. Fan and mist water on person and apply ice bags Provide cool drinking water
  31. 31. Review Cont. Name some Preventive Measures: •Ventilation •Air cooling •Air circulation •Ice vests •Water-cooled garments •Wet clothing, headbands, or bandanas •Use intermittent rest periods •Drink small quantities of water frequently •Provide cool rest areas •Wear light, loose-fitting, breathable clothing
  32. 32. Questions?

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