Some provisions in the standard refer to high-efficiency particulate air (HEPA) filters. The standard defines a HEPA filter as a “filter that is at least 99.97 percent efficient in removing mono-dispersed particles of 0.3 micrometers in diameter.” May an employer rely on a manufacturer’s representation of the effectiveness of a filter to comply with this requirement?
How can an employer determine who qualifies as a “competent person” under the standard? Does an employee have to take a particular training class to meet the definition of a competent person under the standard?
If employee exposures will remain below the AL of 25 μg/m3 as an 8-hour TWA under any foreseeable conditions, does the standard require the employer to complete a written exposure control plan for the worksite?
Do construction employers have to consider exposures from other contractors when determining if their employees’ exposures will remain below the AL of 25 μg/m3 as an 8- hour TWA under any foreseeable conditions?
If employees are not covered by the standard because their exposures will remain below the AL under any foreseeable conditions, does the employer need to document this determination?
Does the standard cover employees who perform silica-generating tasks for only 15 minutes or less a day?
Has OSHA identified specific tasks that are likely to be outside the scope of the standard because they typically generate exposures below the AL of 25 μg/m3 as an 8-hour TWA under all foreseeable conditions?
Is a material safety data sheet (MSDS) required for a non-hazardous chemical?
What is the application of HAZCOM to an office environment?
What are the requirements and limits to using generic MSDSs?