Method of manufacturing an absorber plate for a boiling water reactor
AssigneeASEA Aktiebolag
InventorsSven Eriksson, Lars Halldahl, Sven-Ake Kohrtz
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Abstract
An absorber plate designed to be located in a gap between fuel rod bundles in the core of a boiling water reactor is manufactured by anchoring a burnable neutron-absorbing material to at least one sheet by spraying the absorbing material in finely-divided melted or plastically-formable state onto the sheet, to create a solidified layer of the absorbing material, and by enclosing the absorbing material, thus anchored, in a protective casing.
Claims11
A method of manufacturing a neutron absorber which can be located in a gap between fuel rod bundles in a boiling water reactor core and which includes a neutron-absorbing material that is enclosed within a protective casing, said method comprising the steps of (1) providing a first elongated supporting sheet which has opposite sides and opposite longitudinal edges, each of said opposite sides having a longitudinal middle portion, (2) spraying a neutron-absorbing material onto at least one of said opposite sides of said first supporting sheet such that said neutron-absorbing material forms a solidified layer anchored on the associated side of said first supporting sheet, said spraying being conducted such that the thickness of each said layer of neutron-absorbing material is at a maximum at the longitudinal middle portion of the associated side of said first supporting sheet and successively decreases towards each opposite longitudinal edge thereof, and (3) applying a protective casing over each layer of solidified neutron-absorbing material on said first supporting sheet so as to encase each said layer.
Dependencies are inferred from the claim text.