Describe the requirements for an evacuation warning signal for companies that transport, store, or use radioactive materials
What will be an ideal response?
Companies that produce, use, store, and/or transport radioactive materials are required to have a signal-generating system that can warn of the need for evacuation. OSHA describes the evacuation warning signal system as follows:
The signal shall be a mid-frequency complex sound wave amplitude modulated at a subsonic frequency. The complex sound wave in free space shall have a fundamental frequency (f1) between 450 and 500 hertz (HZ) modulated at a subsonic rate between 4 and 5 hertz. The signal generator shall not be less than 75 decibels at every location where an individual may be present whose immediate, rapid, and complete evacuation is essential.
In addition to this basic requirement, OSHA also stipulates the following:
• A sufficient number of signal generators must be installed to cover all personnel who may need to be evacuated.
• The signal shall be unique, unduplicated, and instantly recognizable in the plant where it is located
• The signal must be long enough in duration to ensure that all potentially affected employees are able to hear it.
• The signal generator must respond automatically without the need for human activation, and it must be fitted with backup power.
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