Apparatus for retrieving witness samples from the field HEXAGONAL CELLS spacing grid

摘要

The invention relates to nuclear power engineering and can be used in enterprises for the manufacture of fuel assemblies (FA) for a nuclear reactor, in particular during the contact-destructive testing of welded joints of cells in spacing grids of fuel assemblies. An object of the utility model is to reduce the time for preparation and recovery operations witness sample from the Field spacer grid without establishing its grip to the posterior end. The goal is achieved in that the device for extracting sample witness out of hexagonal spacer capture formed as a collet with the grooves between the lobes of sufficient size for the passage of two cell walls, the supporting member is provided with a handle, and a tapered member is formed on the slider cooperating with collet and placed screw moving the slide relative to the collet. The design of the device to minimize preparation time operation and perform the extraction from the sample witness lattice field without setting its grip to the posterior end without great effort and mechanical damage field of cells, which ultimately increase the reliability of operation of the fuel assemblies in a nuclear reactor.