Device for working on a gas pipe and corresponding method

摘要

The device has a piercing tool (22) arranged coaxial with a shaft. The shaft has an actuating end arranged external to a part (11) of a housing. The shaft has another actuating end placed inside the housing and carrying the piercing tool. A blocking unit includes an expandable sleeve surrounding the shaft. Shady holes of another part of the housing are sized to accommodate the tool in a position of the shaft in which the sleeve extends from a side to another side of a bore (10). An independent claim is also included for a method for intervention on a gas pipe.