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A demountable flare features a derrick with the riser or risers mounted to permit lowering the flare burner to grade for service. The riser is typically assembled in sections that can be raised and lowered using a track and guide system. Many demountable derricks are designed to support multiple risers with their flare burners. Such a derrick can be designed so that all flares except the one being serviced can be operational at time of maintenance.