A tool for severing or assisting in the severing of a conduit

摘要

A tool for severing or assisting in the severing of a conduit is described. The tool comprises a housing defining a void, the void arranged, in use, to at least partially encircle a conduit and an at least one void access, the/each void access having an inlet and an outlet, the/each void access inlet being in fluid communication with the housing and the/each void access outlet being in fluid communication with the housing void. The tool further comprises an at least one propellant source located within the housing, an ignition mechanism for igniting the/each propellant source and an at least one modifying material. Upon ignition, the/each propellant source deflagrates, creating an at least one stream of combustion products, the/each stream of combustion products flowing out of the tool through the/each void access in to the void, the/each void access channelling the/each stream of combustion products towards the conduit, the/each stream of combustion products combining with the/each modifying material to sever or assist in severing the conduit.