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43 Cards in this Set
- Front
- Back
Heat Stress
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The net heat load to which a worker may be exposed from the combined contributions of metabolic heat, environmental factors, and clothing requirements.
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Heat Strain
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The overall physiological response resulting from heat stress
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Cold Stress
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Environmental and/or personal conditions that tend to remove body heat and decrease body temperature
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Transfer takes place though the following
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Radiation, Convection, Conduction, Evaporation
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Metabolism
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The flow of energy and the associated physical and chemical changes constantly taking place in the billions of cells that make up the body
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Radiation
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Solid bodies of different temperatures have a net heat flow from the hotter surface to the cooler surface by electromagnetic radiation
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Convection
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The transfer of heat in a moving fluid or air
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Conduction
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When two solid bodies are in contact, heat will flow from the warmer body to the cooler body
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Evaporation
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The removal of heat from an object by the vaporization of liquid
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Heat-Realated Disorders
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Heat Illness, Heat Stroke, Heat Exhaustion, Heat Syncope, Heat Cramps, Heat Rash, Sunburn
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Heat Illness
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All embracing teram and applies to an individual who becomes incapacitated as the result of a rise in core body temperature
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Heat Stroke
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The most serious heat-related disorder. It occurs when the body's temperature regulation fails and is unable to get rid of excess heat and the body temperature rises to critical levels
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Heat Exhaustion
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Fainting - Pooling of blood in the legs and skin
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Heat Cramps
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Caused by electrolyte imbalance and causes muscle pains or spasms
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Heat Rash
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AKA Prickly heat - Prolonged, uninterrupted sweating and inadequate hygiene practices
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Sunburn
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Reducing the ability to sweat, degrading performance and increasing the risk of heat casualties
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Hypothermia
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Serious health condition - Heat loss exceeds heat production
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Frostbite
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Skin/tissue freezes - Commonly occurs in the extremities at temperatures of 30 F or lower
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Frostnip
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Milder cold injury that does not cause tissues loss. Reversible freezing, numbness and whiteness of the skin, possible itching or pain
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Trench Foot
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Immersion Foot - exposed to cold we conditions for prolonged periods of time
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Chilblain
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Superficial cold injury, most common on the fingerers ears cheeks toes and exposed shins
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Raynaud's Disorder
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Affects arteries, marked by brief episodes of vasospasm or narrowing of the blood vessels
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Heat Stress Engineering Controls
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Dilution Ventilation, Active Cooling, Shielding
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Dilution Ventilation
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Brings in a supply of cooler air from another area and reduces the temperature in the work area by diluting the hot air with cooler air
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Active Cooling
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Mechanical refrigeration, evaporative cooling, or a water chiller is used to reduce the temperature
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Shielding
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Insulated or reflective barrier between the source and the receiver can interrupt the pathway of heat
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Heat Stress - Administrative Controls
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Acclimatization, Pace of Work, Sharing Work, Scheduling of Work, Work Times, Self-Determination and Personal Monitoring, Fluid Replacement, Diet, Life-Style and General Health, Awareness Training
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Acclimatization
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10-14 days - A series of physiological adjustments that occur when an individual is expose to a hot climate
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Pace of Work
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Slow down the pace of work
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Sharing Work
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Distribute the work
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Scheduling of Work
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Scheduling nonessential work to cooler times of the day
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Heat Stress - PPE
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Circulating Air Systems, Circulating Water Systems, Ice Garments, Reflective Clothing
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Circulating Air Systems
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Circulating air under the clothing and around the torso
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Circulating Water Systems
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A system that circulates cool water though tubes and channels around the body
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Ice Garments
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Removes body heat from the skiing by the use of packets of ice
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Reflective Clothing
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Best suited for sources of high radiant heat
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Ergonomics
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The scientific study of or design of equipment and work tasks and their relation to or fit with the operator
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Goal of Ergonomics
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To prevent occupational disorders by ensuring a "best fit" between the human body and the work environment though evaluation and design of facilities jobs, tools, processes, equipment, and training methods
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Carpal Tunnel Syndrome
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A disorder of the hand characterized by pain, weakness, and numbs in the fingers, caused by nerve compression in the wrist
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Vibration Syndrome
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AKA Raynaud's Phenomenon/Disorder - Abnormal constriction of the blood vessels - Finger may turn cold, numb and tingle and there may be a loss of sensation and control of finger movement
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Tendonitis
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Inflammation of a tendon often associated with repeated tension, motion, bending, being in contact with a hard surface or vibration
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Tenosynovitis
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The inflammation of the lining of the tendon sheaths which enclose the tendons
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Trigger Finger
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The tendon sheath of a finger is so swollen that the tendon becomes locked in the sheath
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