Justification for Selecting Level A vs. Level B Personal Protective Equipment to Remediate a Room Containing Concentrated Acids, Bases and Radiological Constituents Page: 4 of 9
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WM '02 Conference, February 24-28, 2002, Tucson, AZ
hazardous chemicals must not adversely affect any exposed skin. Level D typically
consists of company-issued clothing, safety boots, safety glasses and hard hats and is used
when the atmosphere contains no known hazard. Level D should be used when the work
functions preclude any type of splash, immersion, or the potential for unexpected
inhalation or contact with hazardous chemicals.
Level A and Level B Ensembles
Part 1910.120 Appendix B, Part A (2) and the OSHA Technical Manual (3) provide
specific information about selecting either Level A or Level B ensembles.
Part 1910.120 Appendix B, Part A(I) states that Level A is:
To be selected when the greatest level of skin, respiratory, and eye
protection is required.
Part 1910.120 Appendix B, Part B(I) states that Level A protection should be used when:
1. The hazardous substances have been identified and requires the
highest level of protection for skin, eyes, and the respiratory system
based on either the measured (or potential for) high concentrations of
atmospheric vapors, gases, or particulates; or the site operations and
work functions involve a high potential for splash, immersion, or
exposure to unexpected vapors, gases, or particulates of materials that
are harmful to skin or capable of being absorbed through the skin.
2. Substances with a high degree of hazard to the skin are known or
suspected to be present, and skin contact is possible, or
3. Operations must be conducted in confined, poorly ventilated areas, and
the absence of conditions requiring Level A have not yet been
determined.
Furthermore, Table VIII: 1-1, EPA Levels of Protection: Levels A, B, C, and D, found in
Section VIII: Chapter 1 of the OSHA Technical Manual, provides information about
Level A PPE protection, uses, and limitations.
Protection Provided: Highest available level of respiratory, skin, and
eye protection from solid, liquid and gaseous chemicals.
Used When: The chemical(s) have been identified and have high level
of hazards to respiratory system, skin and eyes. Substances are
present with known or suspected skin toxicity or carcinogenity.
Operations must be conducted in confined or poorly ventilated areas.
Limitations: Protective clothing must resist permeation by the chemical
or mixtures present. Ensemble items must allow integration without
loss of performance.4
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Hylko, J. M.; Thompson, A. L.; Walter, J. F. & Deecke, T. A. Justification for Selecting Level A vs. Level B Personal Protective Equipment to Remediate a Room Containing Concentrated Acids, Bases and Radiological Constituents, article, February 25, 2002; Tucson, Arizona. (https://digital.library.unt.edu/ark:/67531/metadc785155/m1/4/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.