Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Heat cold stress

113 views

Published on

Heat and cold stress ppt

Published in: Health & Medicine
  • ⇒ www.HelpWriting.net ⇐ is a good website if you’re looking to get your essay written for you. You can also request things like research papers or dissertations. It’s really convenient and helpful.
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Yes you are right. There are many research paper writing services available now. But almost services are fake and illegal. Only a genuine service will treat their customer with quality research papers. ⇒ www.WritePaper.info ⇐
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Be the first to like this

Heat cold stress

  1. 1. HEAT STRESS 1293 Airport Road Beaver, WV 25813 Phone: (304) 253-8674 Fax: (304) 253-7758 E-mail: hazmat@iuoeiettc.org Vincent J. Giblin, General President
  2. 2. This material was produced under grant number 46C5-HT16 from the Occupational Safety and Health Administration, U.S. Department of Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government.
  3. 3. Operating Engineers National Hazmat Program RECENT HEAT RELATED DEATHS Korey Stringer 7-31-01 – 27 Yrs Old 6’3” 335 lbs Eraste Autin 7-25-01 – 18 Yrs Old 6’2” 250 lbs Preston Birdsong 8-13-00 – 18 Yrs Old 5’11” 190 lbs
  4. 4. Operating Engineers National Hazmat Program COMMON FACTORS (Worker vs. Athlete) Protective clothing Focus on task at hand Job security concerns Desire to succeed Desire to be accepted Machismo Peer pressure Delayed thirst mechanism
  5. 5. Operating Engineers National Hazmat Program U.S. HEAT STROKE STATS At least 300 deaths/year 7421 deaths from 1979-1998 1700 deaths in 1980 alone Causes more deaths annually than hurricanes, lightning, tornadoes, floods, and earthquakes combined 18 high school and college football player deaths since 1995
  6. 6. PHYSIOLOGICAL RESPONSES TO OVERHEATING English Translation: What happens when you get too dang hot
  7. 7. Operating Engineers National Hazmat Program “TOO DANG HOT RESULTS” Excessive sweat loss results in dehydration The body loses its ability to cool Increased blood flow to skin causes decrease in organ function
  8. 8. Operating Engineers National Hazmat Program HEAT-RELATED ILLNESSES HEAT CRAMPS HEAT EXHAUSTION HEAT STROKE
  9. 9. Operating Engineers National Hazmat Program HEAT CRAMPS Caused by excessive loss of electrolytes Early warning sign of heat stress Painful cramps usually in legs or abdomen Stop activity, hydrate, rest in cool place Get medical attention if condition continues
  10. 10. Operating Engineers National Hazmat Program HEAT EXHAUSTION The body’s response to excessive water and electrolyte loss Stop activity and seek treatment immediately
  11. 11. Operating Engineers National Hazmat Program HEAT STROKE The body’s cooling mechanism shuts down 50% that reach the heat stroke stage die even with medical attention
  12. 12. Operating Engineers National Hazmat Program LIVE OR DIE? HEAT EXHAUSTION  Skin is pale  Excessive sweating  May faint but usually conscious  Headache  Nausea and vomiting  Blurred vision  Dizziness HEAT STROKE Skin is red No sweating Unconscious or incoherent
  13. 13. Operating Engineers National Hazmat Program TREATMENT HEAT EXHAUSTION Call 911 Rest in cool place Loosen and remove unnecessary clothing Shower or sponge with cool water HEAT STROKE Call 911 Immediate, aggressive, effective cooling DO NOT give anything by mouth Transport to hospital
  14. 14. Operating Engineers National Hazmat Program HUMAN RISK FACTORS Poor nutrition Poor physical condition High and low % body fat Previous heat illness Lack of acclimatization Over 40 Illness (diabetes, asthma) Pregnancy Diet plans
  15. 15. Operating Engineers National Hazmat Program ENVIRONMENTAL RISK FACTORS Air temperature Direct sunlight Radiant heat Humidity Little air movement
  16. 16. Operating Engineers National Hazmat Program JOB RISK FACTORS Work intensity Work duration Location (roof, road, enclosure) Clothing (weight, impermeability) Respiratory protection
  17. 17. Operating Engineers National Hazmat Program WORKER RESPONSIBILITY Follow instructions of IH and health care professionals Be watchful for symptoms (self and others) Properly hydrate (before, during, after) Get adequate rest Avoid alcohol, unnecessary medication, and caffeine
  18. 18. Operating Engineers National Hazmat Program MANAGEMENT RESPONSIBILITY Ensure that environmental conditions are monitored Adjust work practices as necessary Be watchful for signs of overexposure Know workers medical history Assure workers are properly trained Conduct pre and post job safety meetings Assure that affected workers receive treatment
  19. 19. Operating Engineers National Hazmat Program MONITORING Environmental monitoring – WBGT (heat index= temp+humidity+radiant) used for guidance in establishing work/rest ratio Personnel monitoring – Oral thermometer – Ear probe – R*&%$! Thermometer – Core Temp – Pulse rate – Blood pressure
  20. 20. Operating Engineers National Hazmat Program COOLING WEAR Traditional ice vests Chem-pack vests, headbands, & bandanas Active cooling garment (water circulating) SAR and PAPR with active cooling systems New material development (breathable, lighter weight, waterproof)
  21. 21. Operating Engineers National Hazmat Program COLD STRESSCOLD STRESS HypothermiaHypothermia
  22. 22. Operating Engineers National Hazmat Program Cold StressCold Stress (Hypothermia)(Hypothermia) • Acute problem resulting from prolongedAcute problem resulting from prolonged cold exposure and heat losscold exposure and heat loss • ““Hypo” (too little) “Thermia” (heat)Hypo” (too little) “Thermia” (heat) • 750 deaths/year in USA750 deaths/year in USA • Generally doesn’t present the same levelGenerally doesn’t present the same level of danger as heat stressof danger as heat stress – Does not occur as quicklyDoes not occur as quickly – Workers will simply come in out of the coldWorkers will simply come in out of the cold
  23. 23. Operating Engineers National Hazmat Program MAJOR CAUSESMAJOR CAUSES • Cold TemperaturesCold Temperatures – 41 degrees F is cold enough with other contributing41 degrees F is cold enough with other contributing factorsfactors • Improper clothing and equipmentImproper clothing and equipment • WetnessWetness – Sweating, contact with waterSweating, contact with water – Water conducts heat away from the body 25 Xs fasterWater conducts heat away from the body 25 Xs faster than airthan air
  24. 24. Operating Engineers National Hazmat Program Contributing FactorsContributing Factors • FatigueFatigue • DehydrationDehydration • HungerHunger • Alcohol intakeAlcohol intake
  25. 25. Operating Engineers National Hazmat Program Cold Stress HazardsCold Stress Hazards • SYSTEMICSYSTEMIC – HypothermiaHypothermia • LOCALIZEDLOCALIZED – FrostnipFrostnip – FrostbiteFrostbite – Trench FootTrench Foot
  26. 26. Operating Engineers National Hazmat Program Signs and SymptomsSigns and Symptoms • HypothermiaHypothermia – Body temp <95 degrees FBody temp <95 degrees F – EuphoriaEuphoria – Slow weak pulseSlow weak pulse – Slurred speechSlurred speech – ShiveringShivering – UnconsciousnessUnconsciousness
  27. 27. Operating Engineers National Hazmat Program Signs and SymptomsSigns and Symptoms • Frostnip/FrostbiteFrostnip/Frostbite – Itching/burning/numbItching/burning/numb – Skin color changeSkin color change • WhiteWhite • Grayish yellowGrayish yellow • Reddish violetReddish violet • BlackBlack • Trench FootTrench Foot – Severe pain/itch/tingleSevere pain/itch/tingle – SwellingSwelling – BlistersBlisters
  28. 28. Operating Engineers National Hazmat Program First AidFirst Aid • HypothermiaHypothermia – Move to warm areaMove to warm area – Remove wet clothingRemove wet clothing – Modest externalModest external warmingwarming • Blankets/heat packsBlankets/heat packs – Drink warm sweetDrink warm sweet fluids (non-caffeinated)fluids (non-caffeinated) – Transport to hospitalTransport to hospital • Frostnip/FrostbiteFrostnip/Frostbite – Move to warm areaMove to warm area – External warmingExternal warming • Warm waterWarm water – Drink warm sweetDrink warm sweet fluids (non-caffeinated)fluids (non-caffeinated) – Treat as burn (do notTreat as burn (do not rub)rub) – Transport to hospitalTransport to hospital
  29. 29. Operating Engineers National Hazmat Program Body ResponseBody Response MechanismsMechanisms • VasoconstrictionVasoconstriction – Blood vessel constrictionBlood vessel constriction – Reduces heat loss/makes skin better insulatorReduces heat loss/makes skin better insulator • ShiveringShivering – Increases body temp as vasoconstriction failsIncreases body temp as vasoconstriction fails • **NEITHER ARE AS EFFECTIVE AS**NEITHER ARE AS EFFECTIVE AS SWEATING AND ACCLIMATION ARESWEATING AND ACCLIMATION ARE FOR HEAT STRESSFOR HEAT STRESS
  30. 30. Operating Engineers National Hazmat Program Behavior Is The Key!Behavior Is The Key! • Behavior is the primary protection factorBehavior is the primary protection factor for cold stress preventionfor cold stress prevention – Increase clothing insulationIncrease clothing insulation – Increase activityIncrease activity – Seek warm locationSeek warm location – Get the H$!! out of thereGet the H$!! out of there
  31. 31. Operating Engineers National Hazmat Program Cold Stress SolutionsCold Stress Solutions • Engineering Controls-Engineering Controls- Warming shelters, spotWarming shelters, spot heating (i.e. hand warmers), minimize airheating (i.e. hand warmers), minimize air movement (shielding)movement (shielding) • Work Practices-Work Practices- fluid replacement, change wetfluid replacement, change wet clothes immediately, buddy systemclothes immediately, buddy system • Administration Controls-Administration Controls-work/rest cycles,work/rest cycles, warm period work, allow for productivitywarm period work, allow for productivity reductionsreductions • PPEPPE
  32. 32. Operating Engineers National Hazmat Program Clothing TipsClothing Tips • Dress in LayersDress in Layers – Add or remove for comfortAdd or remove for comfort – Allows free movement and dexterityAllows free movement and dexterity • Layer closest to skin should be “waterLayer closest to skin should be “water vapor permeable”vapor permeable” – Wicks away moisture, allows evaporation,Wicks away moisture, allows evaporation, prevents accumulationprevents accumulation
  33. 33. Operating Engineers National Hazmat Program This material was produced under grantThis material was produced under grant number 46C5-HT16 from the Occupationalnumber 46C5-HT16 from the Occupational Safety and Health Administration, U.S.Safety and Health Administration, U.S. Department of Labor. It does notDepartment of Labor. It does not necessarily reflect the views or policies ofnecessarily reflect the views or policies of the U.S. Department of Labor, nor doesthe U.S. Department of Labor, nor does mention of trade names, commercialmention of trade names, commercial products, or organizations implyproducts, or organizations imply endorsement by the U.S. Government.endorsement by the U.S. Government.
  34. 34. Operating Engineers National Hazmat Program ENDEND •This publication was made possible by grant numbers 5 U45 ES06182-13 AND 5 U45 ES09763-13 from the National Institute of Environmental Health Sciences (NIEHS), NIH. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIEHS, NIH.

×