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N, <br /> - If the heart rate exceeds 100 beats per minute at the beginning of the rest <br /> period, shorten the next work cycle by one-third and keep the rest period the <br /> same. <br /> - If the heart rate still exceeds 100 beats per minute at the next rest period, <br /> shorten the following work cycle by one-third. <br /> es <br /> the <br /> ° Oral temperature. <br /> Use a clinical device to measure thetoral1temperature ometer (3 attthe endrof the work <br /> or similar device <br /> period(before drinking). <br /> - If oral temperature exceeds 99.6•F (37.6'C), shorten the next work cycle <br /> by one-third without changing the rest period. <br /> - If oral temperature still exceeds 99.6°F (37.6°C) at the beginning of the <br /> next rest period,shorten the following cycle by one-third. <br /> - Do not permit a worker to wear a semipermeable or impermeable garment <br /> when oral temperature exceeds 100.6°F(38.1°C) <br /> Prevention of Heat Stress <br /> Proper training and preventive measures will aid in averting loss of worker <br /> illness. <br /> Heat stress prevention is particularly important <br /> riailS <br /> i[ln p <br /> productivity and se may <br /> p ty <br /> because once a person suffers from heat stroke or heat exhaustion, that persony <br /> be predisposed to additional heat related illness. To avoid heat stress the following <br /> steps should be taken: <br /> • Adjust work schedules. <br /> - Modify work/rest schedules according to monitoring requirements. <br /> - Mandate work slowdowns as needed. <br /> - Perform work during cooler hours of the day if possible or at night if <br /> adequate lighting can be provided. <br /> • Provide shelter (air-conditioned, if possible) or shaded areas to protect <br /> personnel during rest periods. <br /> • Maintain worker's body fluids at normal levels. This is necessary to ensure <br /> that the cardiovascular system functions adequately. Daily fluid intake must <br /> t of water lost in sweat, i.e.,eight fluid ounces <br /> approximately equal the amoun <br /> (0.23 liters) of water must be ingested for approximately every eight ounces <br /> normal thirst mechanism <br /> (0,23 kg) of weight lost. The ea <br /> is not sensitive enough <br /> t. <br /> hen heavy <br /> to ensure that enough orage ew�i l worker too replace <br /> lost <br /> mo e.The, following <br /> sweating occurs, enc <br /> strategies may be useful: <br /> Maintain water temperature at SO° to 60•F(10° to . <br /> - Provide small disposable cups that hold about four ounces(0.1 liter). <br /> - Have workers drink 16 ounces (0.5 liters) of f lid (preferably water or <br /> dilute drinks)before beginning work. - <br /> +I , <br /> 2-4 <br />