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1} <br /> ■ The site operations and work functions involve a high potential for splash, <br /> immersion, or exposure to unexpected vapors, gases, or particulates of materials <br /> that are harmful to skin or capable of being absorbed through the intact skin, <br /> ■ Substances with a high degree of hazard to the skin are known or suspected to <br /> be present, and skin contact is possible, or <br /> ■ Operations must be conducted in confined, poorly ventilated areas, and the <br />' absence of conditions requiring Level A has not yet been determined <br /> 712 Equipment <br /> ■ Self-contained Breathing Apparatus (SCBA), <br /> ■ Total encapsulating chemical-resistant suit with or without cooling vest, <br /> ■ Inner gloves (surgical), <br /> 0 Chemical-resistant outer gloves, <br /> 0 Chemical-resistant boots with steel toes, <br />' e Nonconductive hard hat, <br /> ■ Two-way radio worn inside of suit <br /> 72 Level B Protection <br /> 7 2 1 Characteristics of Hazard <br />' ■ The type and atmospheric concentration of substances have been identified and <br /> require a high level of respiratory protection, but less skin protection than that <br />' required to meet the protection standards of Level A This includes atmospheres <br /> with IDLH (Immediately Dangerous to Life or Health) concentrations of specific <br /> substances that do not represent a severe skin hazard, or that do not meet the <br /> criteria for use of air-purifying respirators, <br /> ■ The atmosphere contains less than 195 percent oxygen, or <br />' ■ The presence of incompletely identified vapors or gases is indicated by a direct- <br /> reading organic vapor detection instrument, but vapors and gases are not <br /> suspected of containing high levels of chemicals harmful to skin or capable of <br /> being absorbed through the intact skin <br /> 7-2 REV 4192-EGI <br />