A system for preventing icing in a conduit, as can occur in an aircraft’s air conditioning system, includes at least one sensor for acquiring mechanical oscillations of the conduits, an electronic evaluation unit and an electronic control unit. The devices provide for releasable yet reliable connection between the fishing-pole mount and the jigging mechanism and allow communication of movement of the jigging mechanism to be communicated to the fishing-pole mount and, thus, to the fishing line. In addition to enhancing the oxidation rate of silicon, it is hypothesized that the presence of O3 interferes with the growth of a thin silicon oxynitride layer near the interface of the silicon dioxide layer and the unreacted silicon surface which makes oxidation in the presence of N2O alone virtually self-limiting. Once engaged, the cap prevents the oil plug from being tampered with and from inadvertently dropping out.