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Arcadis Heat Illness Prevention Plan (HIPP) <br />HASP Supplement <br />Use an oral, inner ear, or an infrared type thermometer to measure the body <br />temperature at the end of the work period (If using an oral thermometer record <br />temperature before drinking liquids). <br /> - If oral temperature exceeds 99.6°F (37.6°C), shorten the next work cycle by one- <br />NOTES: <br />(1) Adjusted air temp (ta adj) calculation: ta adj F = ta F + (13 x % sunshine). Measure the <br />air temperature (ta) with a thermometer (shielded from radiant heat). Estimate the percent <br />sunshine by judging what percent time the sun is not covered by clouds <br />that are thick enough to produce a shadow. (100 percent sunshine = no cloud cover and a <br />sharp, distinct shadow; 0 percent sunshine = no shadows.) <br />(2) Permeable PPE consists of cotton clothing with long sleeves and pants or breathable <br />coveralls. <br />(3) Add 1.8 °F for Tyvek coveralls; add 5.4 °F for heavy clothing; add 19.8 °F for <br />impermeable/semi-impermeable PPE - Level A/B suits) <br />Heart Rate Monitoring <br />When conducting heart rate monitoring, first record a resting heart rate to establish <br />the individuals daily baseline heart rate. Count the radial pulse (located on the <br />inside of the wrist below the thumb) during a 30 second interval before the start of <br />work to establish a baseline heart rate. During rest cycles count the heart rate as <br />early as possible at the beginning of the rest cycle and again 3-5 minutes later. The <br />heart rate should fall and soon approach the individuals baseline heart rate. <br /> - If the heart rate exceeds 110 beats per minute at the beginning of the rest <br />period, <br />shorten the next work cycle by one-third and keep the rest period the same. <br /> - If the heart rate still exceeds 110 beats per minute at the next rest period, <br />shorten the <br />following work cycle by one-third. <br />Body Temperature Monitoring <br />77.5-82.5° F / 25.3-28.1° C After ea.120 mins. of work After ea. 90 mins. Working <br />72.5-77.5° F / 22.5-25.3° C After ea.150 mins. of work After ea. 120 mins. Working <br />87.5-90° F / 30.8-32.2° C After ea. 60 mins. of work After ea. 30 mins. Working <br />82.5-87.5° F / 28.1-30.8° C After ea. 90 mins. of work After ea. 60 mins. Working <br />for individuals with normal cardiac performance per their physician; or a body core <br />temperature exceeds 101.3°F / 38.5°C for acclimatized workers or 100°F / 38°C for <br />unacclimated workers; a recovery heart rate at 1 minute after a peak work effort is <br />greater than 120 bpm; or there are symptoms of sudden and severe fatigue, nausea, <br />dizziness, or lightheadedness. <br />Suggested Frequency and Duration of Work / Rest Cycles Applying <br />Physiological Monitoring of Acclimatized Personnel <br />Adjusted Temp. (1)Permeable PPE (2)Impermeable PPE (3) <br />> 90° F / 32° C After ea. 45 mins. of work After ea. 15 mins. working <br />Rev 8 13 June 2019