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Table 1. Criteria for Selection of Personal Protection Level. <br /> Level of <br /> Protection Equipment Protection Provided Should Be Used When Limiting Criteria <br /> A RECOMMENDED: The highest available level of - The chemical substance has been Fully encapsulating suit material must be <br /> Pressure demand,full facepiece SCBA respiratory,skin,and eye identified and requires the highest compatible with the substances involved. <br /> or pressure demand supplied air protection. level of protection for skin,eyes,and <br /> respirator with escape SCBA. the respiratory system based on either: <br /> Fully encapsulating chemical-resistant 1 measured(or potential for)high <br /> suit. concentration of atmospheric vapors, <br /> gases,or particles <br /> Inner chemical-resistant gloves. or <br /> Chemical resistant safety boots/shoes. 2 site operations and work functions <br /> involving a high potential for splash, <br /> - Two way radio communications. immersion,or exposure to <br /> unexpected vapors,gases,or <br /> OPTIONAL: particulates of materials that are <br /> Cooling unit. harmful to skin or capable of being <br /> absorbed through the intact skin. <br /> Coveralls. <br /> - Substances with a high degree of <br /> Long cotton underwear. hazard to the skin are known or <br /> suspected to be present,and skin <br /> Hard hat. contact is possible. <br /> Disposable gloves and boot covers. - Operations must be conducted in <br /> confined,poorly ventilated areas until <br /> the absence of conditions requiring <br /> Level A protection is determined. <br />