What action is considered dangerous during hose testing?

Pumping a line on the panel side during hose testing is considered particularly dangerous due to the potential for the discharge of high-pressure water towards personnel or equipment. The panel side is where the couplings and connections are typically located, and if a failure or burst occurs, it can lead to a sudden release of water or physically dangerous components, which may cause injury to anyone nearby.

This action can increase the risk of injury from the pressurized water, as well as from the hose itself if it were to whip around due to the sudden release of pressure. Proper ventilation, safe distancing, and wearing appropriate protective gear are critical measures during hose testing, especially when working with pressurized lines. Thus, prioritizing safety means avoiding this action to minimize risk to personnel and equipment.