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FIELDWORK HEALTH & SAFETY PLAN (HASP) FOR FIELD INVESTIGATIONS OF PETROLEUM DISTILLATE FUELS • Good hygienic standards must be maintained by frequent changes of clothing and showering. Clothing should be permitted to dry during rest periods. Persons who notice skin problems should immediately consult medical personnel. 3.0 HEAT RASH Heat rash is caused by continuous exposure to heat and humid air and aggravated by chaffing clothes. The condition decreases ability to tolerate heat. Symptoms: Mild red rash, especially in areas of the body in contact with protective gear. Treatment: Decrease amount of time in protective gear, and provide powder to help absorb moisture and decrease chafing. 4.0 HEAT CRAMPS Heat cramps are caused by perspiration that is not balanced by adequate fluid intake. Heat cramps are often the first sign of a condition that can lead to heat stroke. Symptoms: Acute painful spasms of voluntary muscles; e.g., abdomen and extremities. Treatment: Remove victim to a cool area and loosen clothing. Have patient drink 1-2 cups of water immediately, and every 20 minutes thereafter, until symptoms subside. Total water consumption should be 1-2 gallons per day. Consult with physician. 5.0 HEAT EXHAUSTION Heat exhaustion is a state of very definite weakness or exhaustion caused by the loss of fluids from the body. This condition is much less dangerous than heat stroke, but it nonetheless must be treated. Symptoms: Pale, clammy, moist skin, profuse perspiration and extreme weakness. Body temperature is normal, pulse is weak and person may vomit, and may be dizzy. Treatment: Remove the person to a cool, air conditioned place, loosen clothing, place in a head -low position, and provide bed rest. Consult physician, especially in severe cases. The normal thirst mechanism is not sensitive enough to ensure body fluid replacement. Have patient drink 1-2 cups of water immediately, and every 20 minutes thereafter, until symptoms subside. Total water consumption should be about 1-2 gallons day. 6.0 HEAT STROKE Heat stroke is an acute and dangerous reaction to heat stress caused by a failure of heat regulating mechanisms of the body - the individual's temperature control system that causes sweating stops working correctly. Body temperature rises so high that brain damage and death will result if the person is not cooled quickly. Symptoms: Red, hot, dry skin, although person may have been sweating earlier; nausea; dizziness; confusion; extremely high body temperature, rapid respiratory and pulse rate; unconsciousness or coma. Treatment: Cool the victim quickly. If the body temperature is not brought down fast, permanent brain damage or death will result. Soak the victim in cool but not cold water, sponge the body with cool water, or pour water on the he body to reduce the temperature to a safe level (1020F). Observe the victim and obtain medical help. If victim is conscious, have him drink 1-2 cups of water. Never give liquids to an unconscious victim. 7.0 HEAT STRESS MONITORING AND WORK CYCLE MANAGEMENT For strenuous field activities that are part of on-going site work activities in hot weather, the following procedures shall be used to monitor the body's physiological response to heat, and to manage the work cycle, even if workers are not wearing protective clothing. Measure Heart Rate (HR). HR should be measured by the radial pulse for 30 seconds as early as possible in the resting period. The HR at the beginning of the rest period should not exceed 110 beats/minute. If the HR is higher, the next work period should be shortened by 33%, while the length of the rest period stays the same. If the pulse rate still exceeds 110 beats/minute at the beginning of the next rest period, the following work cycle should be further shortened by 33%. The procedure is continued until the rate is maintained below 110 beats/minute. Manage Work/Rest Schedule. The following work/rest schedule can be used as a guideline Adjusted Temperature Active Work Time (min/hr) <75 50 80 40 85 30 90 20 95 10 100 0 Calculate the adjusted temperature: T (adjusted) = T (actual) + (13 x fraction sunshine) -13- Revision: 7 — June 2013