A confined space refers to a closed or partially closed space with limited and narrow entrances/exits. It is not designed as a fixed workplace, has poor natural ventilation, and is prone to the accumulation of toxic, harmful, flammable, and explosive substances or insufficient oxygen content.
Confined space operations for pipeline desilting (as defined in relevant safety standards) refer to work activities where workers enter confined spaces to perform operations.
Pipeline desilting projects often require workers to enter narrow underground pipe manholes to conduct supporting operations. Therefore, pipeline desilting is classified as a confined space operation.
Such as ship cabins, storage tanks, vehicle-mounted tanks, reaction towers (kettles), refrigerated containers, pressure vessels, pipelines, flues, boilers, etc.
Such as underground pipelines, basements, underground warehouses, underground projects, underground ditches,