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Arcadis Heat Illness Prevention Plan (HIPP) <br /> HASP Supplement <br /> Suggested Frequency and Duration of Work / Rest Cycles Applying <br /> Physiological Monitoring of Acclimatized Personnel <br /> Adjusted Tem 1 Permeable PPE 2 Impermeable PPE (3) <br /> > 90° F / 32° C After ea. 45 mins. of worl After ea. 15 mins. working <br /> 87.5-90° F / 30.8-32.2° C After ea. 60 mins. of worl After ea. 30 mins. Working <br /> 82.5-87.5° F / 28.1-30.8° C After ea. 90 mins. of worl After ea. 60 mins. Working <br /> 77.5-82.5° F / 25.3-28.1° C After ea.120 mins. of wor After ea. 90 mins. Working <br /> 72.5-77.5° F / 22.5-25.3° C After ea.150 mins. of wor After ea. 120 mins. Working <br /> NOTES: <br /> (1) Adjusted air temp (ta adj) calculation: to adj F = to 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 OF for Tyvek coveralls; add 5.4 OF for heavy clothing; add 19.8 OF 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. <br /> The 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 /> fnlln%niinn %A/nrl- rvr n by nno-thirri <br /> Body Temperature Monitoring <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 (37.60C), shorten the next work cycle by one- <br /> third <br /> without changing the rest period. <br /> - If oral temperature still exceeds 99.6°F (37.6°C) 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 when <br /> hi-,/her oral tPmnPrafi irP Pxr,PPrlc inn F OF ('12 1 OM <br /> Rev 8 13 June 2019 <br />