ARCHIVED REPORTS XR0004323 - Laserfiche WebLink

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• r .] r Workers who must wear impermeable clothing are held at a higher risk of suffering heat stress Impermeable clothing impedes sweat evaporation, one of the body's major cooling mechanisms It is the duty of each employer to alert or notify the SSHO if symptoms of heat stress occur to their respective site personnel Physiological and environmental monitoring of personnel wearing an impermeable protective equipment ensemble will commence when the ambient temperature rises above 70°F Environmental ' monitoring will be conducted continuously for as long as the ambient temperature stays above 70OF and Physiological monitoring will be conducted immediately before and after each work period Frequency of physiological monitonng will increase as the ambient temperature increases or if slow recovery rates are ' indicated The break time must be sufficient to allow workers to recover from the effects of heat stress This will be accomplished by measuring the recovery HR and OT The break time duration will be determined using the following methodology and criteria ' ■ Seat person being monitored, ■ Take OT, and ' ■ Measure pulse in the following sequence Pulse#1 30 seconds to 1 minute after sitting, • Pulse#2 21/to 3 minutes after sitting ' An excessive heat stress condition exists when any of the following conditions exist ' 1 Oral or ear temperature exceeds 99 5°F, 2 If pulse#2 is greater than 90 beats/minute, and 3 Pulse#1 is greater than 100 beats/minute Worker cannot return to work unttl ' ■ Oral or ear temperature is below 99 50F, ■ Pulse rate is below 90 beats/minute, and i Recovery HR for workers with HRs over 90 beats per minute is less than 10 beats per minute less than the original HR ' Adhering to the guidelines for heat stress prevention and monitoring will greatly minimize the possibility of the occurrence of heat stress Site personnel must also be aware of the symptoms of heat-related ' disorders and be prepared to administer the appropriate treatments ' 112 Prevention A Provide plenty of fluids A 50 percent solution of fruit juice or similar solution in water, or plain water will be available For workers performing work inside an exclusion zone (EZ), fluid intake may occur in the contaminated reduction zone (CRZ) Workers must first perform a partial decontamination process which will include removal of gloves and washing of hands and face prior to consumption of fluids The SSHO will monitor the partial decontamination and fluid consumption process to ensure that ingestion of site contaminants does not occur FLUOR DANIEL GTI 90