Just as intense amounts of heat can lead to heatstroke, exhaustion or burns to manufacturing workers, cold stress also poses a danger to those exposed to extreme cold for prolonged periods. The most common cold-induced injuries are conditions such as hypothermia, frostbite or trench foot.
The International Safety Equipment Association (ISEA) has released a revised standard—ANSI/ISEA 201-2019—for cold weather protection. It notes that “clothing ensembles worn in cold temperature environments must meet a number of requirements in order to minimize injuries and illnesses.” The clothing “must provide the required level of insulation for the comfort and protection of the wearer in the exposure environment.”
The Occupational Safety and Health Administration (OSHA) does not have a specific standard that covers working in cold environments, but instead places the responsibility to protect workers on employers themselves. OSHA’s Cold Stress Guide notes that the risk factors that contribute to cold stress include:
- Wetness/dampness, dressing improperly and exhaustion.
- Predisposing health conditions such as hypertension, hypothyroidism and diabetes.
- Poor physical conditioning.
When it comes to defining “extreme cold,” OHSA notes that this can be interpreted differently across the country. In regions that are not used to winter weather, near-freezing temperatures are considered “extreme.” But in colder climates, the temperatures may be more tolerable for workers.
“Whenever temperatures drop below normal and wind speed increases, heat can leave your body more rapidly,” OSHA says, noting that cold stress occurs by driving down skin temperature and eventually the internal body temperature (core temperature). “This may lead to serious health problems, and may cause tissue damage, and possibly death.”
To keep workers safe, OSHA recommends employers:
- Ensure workers know the symptoms of cold stress and dress properly for cold weather.
- Monitor their physical condition and that of their co-workers.
- Keep workers dry in the cold because moisture or dampness (from sweating, for example) can increase the rate of heat loss from the body.
- Keep extra clothing (including underwear) handy in case workers get wet and need to change.
- Provide warm sweetened fluids (no alcohol).
- Use proper engineering controls, safe work practices and the appropriate personal protective equipment (PPE).
Read more: Cold Stress Protection: Tips for Cold Weather and Winter PPE Selection
No. 5: Cold Weather Attire
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