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you are using Breathing Apparatus set. During the rescue operation cylinder saw only50 bar pressure and also sounding warning whistle. Now, rescuer what should you do ?
warning whistle indicate that its time to leave the confined place because the pressure in breathing apparatus is low and hardly work up to 10 to 15 minutes.
I SIGNAL MY PARTNER TO IMMEDUATELY LEAVE THE TOXICATED AREA TO SAFETY: OUT OF THE BUILDING
You must retreat immediately you hear your BA warning sound