Construction safety talk covering Heat Stress.

1. Construction Safety Talks
Every year we hear reports of people who become ill or die as a result
Heat Stress of summer heat. Heat is an environmental hazard that can cause
specific illnesses, decrease productivity, and increase accidents.
No. 64 Tolerance for heat varies greatly among people, although no one is
entirely immune to heat stress problems. The heat illnesses are heat
cramps, heat exhaustion, and heat stroke. Dehydration is the culprit
How This Talk because vast quantities of sweat must be produced to cool the body.
Applies To My
Crew: What are the signs of heat illnesses?
• Heat Cramps: Brief, periodic cramps in the muscles of the arms,
legs, or abdomen.
• Heat Exhaustion: Tiredness, weakness, thirst and dizziness, with
occasional headache, nausea, diarrhea and fainting; skin is moist.
• Heat Stroke: This is a life-threatening illness characterized by
confusion, delirium, loss of consciousness, convulsions, coma, and
hot dry skin.
What can you do to prevent heat illnesses?
• Drink plenty of fluids frequently, especially water. A glass every half
hour when temperatures are high is more effective in the prevention
of dehydration than larger amounts taken less frequently.
• Wear lightweight clothing, and include a shirt which serves as a
shield from the sun's rays.
• When outside, rest breaks should be taken in a shady area.
• Get adequate sleep.
• Avoid alcohol or stimulants when performing heavy physical activity
in hot environments.
• If symptoms of heat exhaustion develop, the worker should report
the situation to their supervisor immediately and go to a cooler area
of the work site.
• First aid and/or physician care may be necessary.
• Heat stroke is an immediate threat to life. Cooling with cold water or
even ice must be begun at once. At the same time, medical aid
should be called.
• Using salt tablets is unnecessary and in some people may be
harmful. Additional salt can be used with foods, according to taste.
© 2004 Liberty Mutual Group – All Rights Reserved 1

2. The National Institute for Occupational Safety and Health (NIOSH) states “Heat acclimatized
workers lose much less salt in their sweat than do workers who are not adjusted to the heat. The
average American diet contains sufficient salt for acclimatized workers even when sweat
production is high. If, for some reason, salt replacement is required, the best way to compensate
for the loss is to add a little extra salt to the food. Salt tablets should not be used.” Persons with
heart problems or those on a low sodium diet who work in hot environments should consult a
physician about what to do under these conditions.
Questions you can use to get them talking:
• Has anyone ever had heat stroke—or know someone—what did you observe?
Attended by : _______________ ________________ _______________
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The illustrations, instructions and principles contained in the material are general in scope and, to
the best of our knowledge, current at the time of publication. No attempt has been made to
interpret any referenced codes, standards or regulations. Please refer to the appropriate code,
standard or regulation making authority for interpretation or clarification.
© 2004 Liberty Mutual Group – All Rights Reserved 2