AS ISO 3452.4:2020 Non-destructive testing一 Penetrant testing Part 4: Equipment

AS ISO 3452.4:2020 Non-destructive testing一 Penetrant testing Part 4: Equipment. The equipment shall be constructed such that an even thin coating of the developer powder is applied to all surfaces. Where a cabinet is used, it shall be of sufficient size to accommodate all the work pieces examined, either as single components or as multiples placed in wire baskets. It shall have a sealed, hinged lid and be fitted with heaters to prevent contamination of the powder by moisture. Where an electrostatic spray or a flock gun is used, suitable means of extraction shall be provided. b) Water suspension developer. The station shall comprise a tank which shall be fitted with a lid and shall be of such a size that total immersion of components can be achieved. It shall have facilities for continuous agitation of the developer either by clean air or by mechanical means, and shall be capable of maintaining the developer at the temperature recommended by the manufacturer and include a system for permitting excess developer to drain back freely into the tank. c) Solvent-based developer. The station shall comprise equipment for spray application of the developer within a cabinet. This developer may be applied by air assisted, airless and/or electrostatic spraying. The equipment shall be fitted with suitable mechanical agitation to maintain the developer in suspension. Where applicable the spray gun shall be actuated by dry, clean filtered air. This developer may be spray applied from an aerosol container or spray cans. The cabinet shall he constructed so that unrestricted spraying of the component can take place. d) Water soluble developer. The station shall comprise a tank which shall be fitted with a lid and shall be of such a size that total immersion of components can be achieved. It shall be capable of maintaining the developer at the temperature recom- mended by its manufacturer and include a system for permitting excess developer to drain back freely into the tank. 5.8 Inspection area Inspection stations shall be of sufficient size to permit the free movement of inspection personnel and components and, if required, to accommodate a work table with a non-reflecting surface. For fluorescent inspection suitable UV-A lamps shall be provided which meet the requirements of prEN Iso 3059. Ultraviolet lamps should be provided for background UV-A illumination. The booth shall be constructed such that the level of ambient visible light shall not exceed 20 lx...