KIRTLAND AIR FORCE BASE ALBUQUERQUE, NEW MEXICO ...

APPENDIX F
symptoms of heat stress, will help prevent heat-related illnesses from occurring. Table 4-1 will be used as
guidance.
Table 4-1. Permissible Heat Exposure Threshold Limit Values 1
Work/Rest Regimen
Work Load
Light Moderate Heavy
Continuous work 82 2 80 77
75 percent work, 25 percent rest, 3
each hour
50 percent work, 50 percent rest,
each hour
25 percent work, 75 percent rest,
each hour
87 82 78
89 85 82
90 88 86
1
2
3
FOOTNOTES
Values are given in °F WBGT
When workers are wearing semi-permeable or impermeable clothing, subtract 10°F from the WBGT value.
Rest means minimal physical activity. Rest will be accomplished in the shade. Any activity requiring
only
minimal physical activity, e.g., filling out log books, can be performed during rest periods.The signs of
frostbite range from sudden blanching or whitening of the skin, to a waxy or white appearance and
firmness to the touch (with tissue beneath resilient), to tissues that are cold, pale,
Conditions involving acclimatization and individual responses to heat may require that variances from the
table be used. It is unacceptable for any worker to experience heat stress.
Heat stress can manifest in several forms. The most prevalent manifestations of heat stress are:
Heat cramps—The signs and symptoms of heat cramps are severe muscle cramps (usually in
the legs and the abdomen), exhaustion often to the point of collapse, and dizziness or periods
of faintness.
First aid for heat cramps includes shade, rest, and fluid replacement. Normally, the
individual will recover within one-half hour. If the individual is not better within 30 minutes,
the individual will be transported to a hospital for medical attention.
Heat exhaustion—The signs and symptoms of heat exhaustion are rapid and shallow
breathing, weak pulse, cold and clammy skin with heavy perspiration, pale skin, fatigue and
weakness, dizziness, and elevated body temperature.
First aid for heat exhaustion includes cooling the victim, elevating the feet, and replacing
fluids. If the individual is not better within 30 minutes, the individual will be transported to
the hospital for medical attention.
Heat stroke—The signs and symptoms of heat stroke are dry/hot/red skin, body temperature
approaching or above 105°F, large (dilated) pupils, and loss of consciousness. The individual
may go into a coma. This condition is classified as a medical emergency, requiring
immediate cooling of the patient and transport to a medical facility.
Kirtland AFB
Base-Wide Health and Safety Plan F-21 April 2004