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' HEAT STRESS TABLE <br /> Suggested Frequency of Physiological Monitoring <br /> for Fit and Acclimated workers(i) <br /> Adjusted <br /> Temperature(2) Normal_Work „Ensemble(3) Permeable Ensemble <br /> 90 deg. or above After each 45 minutes After each 15 minutes <br /> 87 . 5 deg. -90 deg. After each 60 minutes After each 30 minutes <br /> 82 . 5 deg. -87. 5 deg. After each 90 minutes After each 60 <br /> minutes <br /> 77 . 5 deg. -82. 5 deg. After each 120 minutes After each 90 <br /> minutes <br /> 72 . 5 deg. -77. 5 deg. After each 150 minutes After each 120 <br /> minutes <br /> (1) For work levels of 250 kilocalories/hour <br /> (2) Calculate the adjusted air temperature (ta adj . ) by using <br /> this equation: to ad3 . deg. F + (13 x % sunshine) . Measure air <br /> temperature (ta) with a standard mercury-in-glass <br /> thermometer, with the bulb shielded from radiant heat. <br /> ' Estimate percent sunshine by judging what percent time the <br /> sun is not covered by clouds that are thick enough to <br /> produce a shadow. (100 percent sunshine = no cloud cover and <br /> sharp,distinct shadow; 0 percent sunshine = no shadows) . <br /> (3) A normal work ensemble consists of cotton coveralls or other <br /> cotton clothing with long sleeves and pants. <br /> ' o Maintain workers' body fluids with water or dilute drinks. <br /> o Periodic monitoring of pulse rates as determined using the <br /> ' schedule. If the heart rate exceeds 110 beats per minute at the <br /> start of a rest period, shorten the next work cycle by one-third <br /> and keep the rest period the same. <br /> sa <br />