[en] The VGB Condensate Polishing Working Party unanimously supports the view that condensate polishing plant should be obligatory for nuclear power stations with boiling water reactors. Various arrangements are put forward and these are evaluated from the point of view of capital costs, operating costs and waste disposal costs. Certain pre-cleaning stages which are no longer of interest, because they do not match the present state of technology, or for economic reasons, are described. In addition an attempt is made to define various terms which have come into common usage in the operation of drift filters with powder resins or inert materials, for example, filtering agents, surface layer, bottom drift (silting), direct drift, dosing drift, continuous and discontinuous. The various kinds of drift, combined with some dosing, are compared. (orig.)