What is the purpose of standby rescue in confined space entry?

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Standby rescue exists to have a trained person ready to act immediately if someone inside the confined space becomes incapacitated or unable to exit safely. The hazards in confined spaces—such as toxic atmospheres, low or rising oxygen, heat, or physical entrapment—can turn a minor issue into a life-threatening emergency very quickly. Having a rescuer standing by, equipped and prepared to intervene without delay, minimizes the time a person is exposed to danger and increases the chances of a safe extraction.

This isn’t optional, and it isn’t just for training or cleanup. The standby rescuer is part of the entry plan, positioned at a safe location with the right gear and communications to respond promptly, whether it involves entering the space under controlled conditions or coordinating with outside rescue services.