Hot Tapping - Hazards & Controls

Hot tapping or pressure tapping, is the method of making a connection to existing piping or pressure vessels without the interrupting or emptying of that section of pipe or vessel. This means that a pipe or tank can continue to be in operation whilst maintenance or modifications are being done to it.
So there are few hazards and controls have been discribed in the video which shall be taken care of during the activity to prevent any risk of injury, property damage and environmental impact.

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What about emergency team and medical support be at site or not?