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4.2 Personal Protective Equipment (PPE) <br /> I' <br /> LEVEL "A" PROTECTION <br /> Equipment Protection Should be used when: Limiting Criteria <br /> Provided <br /> - Pressure-demand, full, The highest -The chemical substance -Fully-encapsulating <br /> facepiece SCBA or available level of has been identified and suit material must be <br /> pressure-demand respiratory, skin, requires the highest level compatible with the <br /> supplied-air respirator and eye protection. of protection for skin, substances involved. <br /> with escape SCBA. eyes, and the respiratory <br /> system based on either: <br /> measured (or potential <br /> i -Fully-encapsulating, for) high concentration of <br /> 1 chemical-resistant suit atmospheric vapors, <br /> gases, or particulates <br /> or <br /> - Inner chemical-resistant site operations and work <br /> gloves functions involving a high <br /> potential for splash, <br /> immersion, or exposure <br /> OPTIONAL: to unexpected vapors, <br /> gases, or particulates of <br /> - Cooling Unit. materials that are harmful <br /> to slin or capable of <br /> - Coveralls. being absorbed through <br /> the intact skin. <br /> - Long cotton underwear. <br /> -Substances with a high <br /> - Hard hat. degree of hazard to the <br /> skin are known or <br /> - Disposable gloves and suspected to be present, <br /> boot covers. and skin contact is <br /> possible. <br /> -Operations must be <br /> conducted in confined; <br /> poorly ventilated areas <br /> until the absence of <br /> conditions requiring Level <br /> A protection is <br /> E determined. <br /> - 8 - <br />