Cold Weather Presents Dangers to Workers

December 11, 2015 Krysten Powers

Civil engineers at construction site are inspecting ongoing works according to design drawings in difficult winter conditions

As the holidays roll around and the end of the year nears, outdoor construction work often slows, or even halts, in the colder areas of the United States.

But there are many companies who continue to work around the calendar year, often despite the plunging temperatures.

And not all workers may be aware of how to protect themselves in the elements. Prolonged exposure to cold or freezing (below 32 degrees Fahrenheit) temperatures may cause serious health problems, including trench foot, frostbite, and hypothermia.

In extreme cases, this can lead to death. Emergency help should be contacted immediately if you observe uncontrolled shivering, slurred speech, clumsy movements, fatigue, or confused behavior from workers on a job site.

Hypothermia occurs when a person’s normal body temperature drops below 95 degrees Fahrenheit (average human temperature is 98.6 degrees).

Shivering while alert can be a mild symptom, but serious problems occur when shivering stops, heart rate and/or breathing slows, consciousness is lost, or speech is slurred.

Frostbite, which occurs when body tissue freezes, can also occur at above-freezing temperatures due to wind chill. Skin that becomes numb, becomes reddened and develops gray or white patches, feels firm or hard, and may blister should be treated immediately to avoid amputation.

Trench foot, also known as “immersion foot,” is a non-freezing injury caused by lengthy exposure to wet, cold environments. It can occur at temperatures as high as 60 degrees if feet are constantly wet, and shows symptoms of redness, swelling, numbness, and blisters.

In order to prevent these and other cold weather injuries, workers should dress appropriately, including layers of loose-fitting clothing, water resistant clothing, windproof outer layers, and proper ventilation.

It’s always a good idea to keep a spare set of clothes on hand as well, and layers can be added or removed as needed

Workers should keep their heads covered whenever possible, and feet and hands should be protected with insulated socks and gloves.

Supervisors should restrict time outdoors when temperatures reach 0 degrees Fahrenheit, or when wind chills reach -22 degrees.

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