Cold Enviroments - Working in the Cold
Taken from Canadian Centre for Occupational Health and Safety website
What factors modify our response to cold?
A cold environment challenges the worker in three ways: by air temperature, air movement (wind speed), and humidity (wetness). In order to work safely, these challenges have to be counterbalanced by proper insulation (layered protective clothing), by physical activity and by controlled exposure to cold (work/rest schedule).
Air Temperature: Air temperature is measured by an ordinary thermometer in degrees Celsius (°C) or degrees Fahrenheit (°F).
Wind Speed: Different types of commercially-available anemometers are used to measure wind speed or air movement. These are calibrated in meters per second (m/s), kilometers per hour (km/h) or miles per hour (mph). Air movement is usually measured in m/s while wind speed is usually measured in km/h or mph. The following is a suggested guide for estimating wind speed if accurate information is not available:
8 km/h (5 mph): light flag moves,
16 km/h (10 mph): light flag fully extended,
24 km/h (15 mph): raises newspaper sheet,
32 km/h (20 mph): causes blowing and drifting snow.
Click to read on....