Brown Boveri Reaktor Gmbh

Abb Reaktor Gmbh

Wolfgang Schulz

A boiling water reactor has a control element disposed in a water pond. An apparatus for the neutron-radiography testing of the control element includes a film cassette having a recording area. A water-free hood is fitted over the control element. The hood has an open bottom and a wall facing the film cassette. The wall has an opening formed therein with a cross section corresponding to the recording area. A holding device fits over the opening for receiving the film cassette. The holding device has a downwardly open side extended below the opening through which the film cassette is to be introduced into the water-free space in the holding device. A neutron source, a collimator and the film cassette lie in one measurement plane. The opening in the hood wall reduces the proportion of scattered neutrons and the impairment of image quality caused by a film of water remaining between the hood wall and the film cassette and by the hood wall itself, in prior art devices in which the film cassette is disposed outside the hood.

Apparatus for the neutron-radiography testing of a boiling water reactor

A device for irradiating an object, includes a source mount, a source disposed on the source mount for generating thermal neutron rays, a moderator surrounding the source, a collimator having a ray inlet side with an inner surface and at least one funnel-shaped collimator duct for the neutron rays opening toward an object, a neutron-permeable wall separating the source mount from the ray inlet side of the collimator defining a space between the wall and the ray inlet side with an inner peripheral surface of the space, and a plastic plating disposed on the inner peripheral surface of the space and on the inner surface of the ray inlet side defining an opening of the at least one collimator duct free of the plastic plating.

Device for irradiating an object with a transportable source generating

An apparatus for viewing a foil irradiated in the course of neutron radiography, the foil having nuclear tracks being visible after etching under the action of light, includes a completely enclosed housing having a first surface with an opening formed therein for receiving an etched foil, a second surface opposite the opening, a black coating disposed on the second surface, and at least one light source disposed between the black coated second surface and the opening for transmitting light rays striking the foil in the opening at an angle deviating from the normal.

Apparatus for viewing a foil irradiated in the course of neutron

A device for the generation of thermal neutrons includes a gas-filled housing having a wall with inner surfaces and a neutron outlet opening, a spherical moderator housing disposed in the gas-filled housing, a transportable neutron source disposed in the spherical moderator housing, and cups formed of moderating material disposed between the moderator housing and the inner surface of the wall of the gas-filled housing, the cups being spaced at a given distance from the inner surface of the wall of the housing, from the moderator housing and from each other defining spaces between the cups, and the spaces between the cups defining openings directed toward the neutron outlet opening.

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Wunstorf, Germany

Wolfgang Schulz