dispositivo e sistema de contenção, método para conter um plugue ou ferramenta de isolamento de tubo, e, conjunto para isolar um segmento interno de um tubo

摘要

A restraint or gripping device for anchoring within the interior of a pipe comprises a pair of end plates adapted to be urged towards each other and a plurality of shoes, positioned between the end plates, and adapted to be moved radially outwardly as the end plates are urged together. In a further aspect, a method of restraining a pipe plug or isolation tool is provided. Also provided are assemblies for pipe isolation including an integral restraint or gripping mechanism.