A study of exposure to cold in cold stores

Area of Science:

• Occupational Health
• Environmental Physiology
• Human Factors Engineering

Background:

• Cold environments pose significant physiological challenges to workers.
• Protective clothing is crucial for mitigating cold stress.
• Understanding thermal sensations and skin temperature is vital for worker safety.

Purpose of the Study:

• To assess the feasibility of deriving work recovery routines from real-world cold exposure experiments.
• To evaluate the effects of cold on skin temperature and thermal sensations in a working environment.
• To investigate individual and group responses to cold stress in a sub-zero cold store.

Main Methods:

• Eight experienced men worked in a cold store at approximately -27°C wearing protective clothing.
• Skin temperature and thermal sensations were monitored during work periods.
• The study analyzed the relationship between exposure time, clothing insulation, and worker discomfort.

Main Results:

• Exposure up to 40% of total time was deemed acceptable with clothing rated 5-6 togs, preventing unacceptable discomfort.
• Significant individual variations in response to cold were observed, with hands and feet being particularly vulnerable.
• A direct association was found between the duration of cold exposure and the incidence of discomfort.

Conclusions:

• Rigid work/recovery patterns are inadvisable due to individual variations in cold response.
• Group dynamics play a role, with workers adjusting loads to accommodate individual needs.
• Current work/recovery practices require re-evaluation based on observed cold exposure effects and worker feedback.