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102.6 MONITORING <br /> 102.6.1 Temperature <br /> The heat stress of an area can be monitored by the Wet Bulb Globe Temperature Index <br /> (WBGT) technique. Where heat stress is a possibility, a heat stress monitoring device, <br /> such as the Wibget Heat Stress Monitor (Reuter Stokes) can be utilized. <br /> The WBGT shall be compared to the Threshold Limit Values (TLV) outlined by the ACGIH <br /> TLV guides, and a work-rest regiment can be established in accordance with the WBGT. <br /> Note that 5 degrees C must be subtracted from the TLVs for heat stress listed to <br /> compensate for the wearing of impermeable protective clothing. <br /> 102.6.2 Medical <br /> In addition to the provisions of the CKY medical surveillance program, on-site medical <br /> monitoring of personnel should be performed by qualified medical personnel for projects <br /> where heat stress is a major concem. Blood pressure, pulse, body temperature (oral), and <br /> body weight loss should be taken and recorded. <br /> Heart Rate: Count the radial pulse during a 30-second period as early as possible in the <br /> rest period. If the heart rate exceeds 110 beats per minute at the beginning of the rest <br /> period, shorten the next work cycle by one-third and keep the same. If the heart rate still <br /> exceeds 110 beats per minute at the next rest cycle, shorten the following work cycle by <br /> one-third. <br /> Oral Temperature: Use a clinical thermometer or similar device to measure the oral <br /> temperature at the end of the work period (before drinking liquids). If the oral temperature <br /> exceeds 99.617 (37.6C), shorten the next work cycle by one-third without changing the rest <br /> period. If the oral temperature still exceeds 99.6F (37.6C) at the beginning of the next rest <br /> period, shorten the following work cycle by one-third. <br /> Do not permit a worker to wear a semi-permeable or impermeable garment if his/her oral <br /> temperature exceeds 100.61F (38.1 C). <br /> Body Water Bosq: Measure body weight on a scale accurate to +0.25 pounds at the <br /> beginning and end of each work day (also lunch break, if possible) to see if enough fluids <br /> are being taken to prevent dehydration. Weights should be taken while the employee <br /> wears similar clothing or, ideally, nude. The body water loss should not exceed 1.5 percent <br /> total body weight loss in a work day. <br /> Portable water and Gatorade or other electrolyte replacement fluid should be available. <br /> Workers should be encouraged to drink fluids during rest periods. <br /> • <br /> 3 <br />