An employer wants employees to use a supplied-air respirator (SAR) in an IDLH atmosphere. What additional requirement must be met beyond training and fit testing?
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A
A written emergency response plan must be posted at entry
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B
A standby employee must be present and an escape respirator must be provided
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C
The SAR must have an NRR rating of at least 30
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D
Workers must pass an annual pulmonary function test