Identifying Potential Atmospheric Hazards
Per 1910.120(c)(3), All suspected conditions that may pose inhalation or skin absorption hazards that are immediately dangerous to life or health (IDLH) or other conditions.
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For instance, oxygen-deficient atmospheres (less than 19.5% O2 by volume), that may cause death or serious harm must be identified during the preliminary survey and evaluated during the detailed survey.
Other examples of identified hazards include potentially explosive or flammable situations, visible vapor clouds, or areas where biological indicators such as dead animals or vegetation are located.
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1-5. When must all suspected conditions that are immediately dangerous to life or health (IDLH) be identified?
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