Abstract: For an apparatus and method to shut down pipelines, an apparatus frame is supported by the pipe to be shut down, and includes a pointed drill and a drill cylinder to drill a hole, essentially similar in diameter size with the plug cylinder or, when in the same temperature, essentially smaller in diameter size than the plug cylinder, through the pipe to be shut down. The apparatus includes a plug cylinder and equipment for installing the plug cylinder in the drill hole. There is a channel inside the drill cylinder and/or plug cylinder and/or shaft to feed a coolant, a flowing substance, preferably hydrogen, carbonic acid, or other such substance, cooling and at the same time reducing the size of the plug cylinder until it is inserted in the drilled hole. After the plug cylinder has been inserted, the flow of the coolant stops. As a result, the temperature of the plug cylinder increases, and the size of the plug cylinder increases as well.

Abstract: A safety valve to stop flow in the flow pipe (3), the safety valve including a drilling device (8) with its frame (6) to drill a hole in the flow pipe, a winding device (7) fixed to the frame of the drilling device and a band (4) wound with a winding device. The safety valve includes a sleeve to which sleeve a drilling device (8) and a winding device (7) have been fixed and the sleeve has been equipped with systems to fix it to the outside surface of the pipe (3).