EN 25580:1992
(Main)Non-destructive testing - Industrial radiographic illuminators - Minimum requirements (ISO 5580:1985)
Non-destructive testing - Industrial radiographic illuminators - Minimum requirements (ISO 5580:1985)
The function of illuminators is to allow the viewing of radiographs. The illuminator system shall guarantee the same safety of personnel as an electric apparatus concerning maximum voltage, insulation and earthing.
Zerstörungsfreie Prüfung - Betrachtungsgeräte für die industrielle Radiographie - Minimale Anforderungen (ISO 5580:1985)
Essais non destructifs - Négatoscopes utilisés en radiographie industrielle - Exigences minimales (ISO 5580:1985)
La présente Norme internationale spécifie les exigences minimales que doivent posséder les négatoscopes utilisés pour l'examen des radiogrammes industriels. Un négatoscope a pour fonction de permettre l'examen de radiogrammes. Le négatoscope étant un appareil électrique, il doit, pour garantir la sécurité du personnel qui le manipule, répondre aux exigences de sécurité électrique relatives à la tension maximale, à l'isolation et à la mise à la terre et requises par les normes électrotechniques de chaque pays utilisateur.
Neporušitveno preskušanje - Osvetljevalne naprave za industrijsko radiografijo - Minimalne zahteve
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Neporušitveno preskušanje - Osvetljevalne naprave za industrijsko radiografijo - Minimalne zahteveZerstörungsfreie Prüfung - Betrachtungsgeräte für die industrielle Radiographie - Minimale Anforderungen (ISO 5580:1985)Essais non destructifs - Négatoscopes utilisés en radiographie industrielle - Exigences minimales (ISO 5580:1985)Non-destructive testing - Industrial radiographic illuminators - Minimum requirements (ISO 5580:1985)19.100Neporušitveno preskušanjeNon-destructive testingICS:Ta slovenski standard je istoveten z:EN 25580:1992SIST EN 25580:1996en01-januar-1996SIST EN 25580:1996SLOVENSKI
STANDARD
SIST EN 25580:1996
SIST EN 25580:1996
SIST EN 25580:1996
International Standard 5580 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEIKflYHAPOC1HAR OPl-AHM3ALWlR fl0 CTAHAAPTM3A~WWORGANISATION INTERNATIONALE DE NORMALISATION Non-destructive testing - Industrial radiographic illuminators - Minimum requirements Essais non destructifs - N6gatoscopes utilis& en radiographie industrielle - Exigences minimales First edition - 1985-03-15 UDC 771.46 : 621.179.152: 778.33 Ref. No. ISO 5580-1985 (E) Descriptors : tests, non-destructive tests, industrial radiography, test equipment, radiographic illuminators, specifications, marking. Price based on 3 pages SIST EN 25580:1996
Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bedies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 5580 was prepared by Technical Committee ISO/TC 135, Non-destructive testing. ‘Cl International Organkation for Standardization, 1985 l Printed in Switzerland SIST EN 25580:1996
INTERNATIONALSTANDARD ISO 5580-1985 (E) Non-destructive testing - Industrial radiographic illuminators - Minimum requirements 1 Scope and field of application This International Standard specifies the minimum require- ments for industrial illuminators used for viewing radiographs. The function of the illuminator is to allow the viewing of radiographs. The illuminator shall guarantee the same safety of Personne1 as an electric apparatus with maximum voltage, insulation and earthing which is required by corresponding safety Standards of electrotechnics in each country where these are applied. 2 Characteristics sf radiographic illuminators 2.1 Mechanical construction An illuminator consists of the housing with one of the sides being the viewing Screen illuminated from the inside. This Screen tan itself be the diffusing Screen. This housing may also contain a System for thermal protection of the radiographs; this System may or may not be ventilated. For the viewing of wet radiographs, the illuminator shall be so designed as to prevent Penetration of the liquid if the radiograph Comes into contact with the Screen. 2.2 Viewing Screen The screens shall be easy to clean and shall be made of a material which is resistant to scratching during cleaning pro- cesses recommended by the manufacturer and during film viewing. NOTE - The Screen may be a combination of elements, all of which should be resistant to heat in terms of deformation and discoloration. The size of the screens shall allow the viewing of a radiograph without excessive glare reaching the eyes of the Operator. Should the illuminator be used for viewing radiographs of dif- ferent sizes, a System of covering masks shall be provided. 2.3 Luminance 2.7 Disturbing light The Screen luminance required depends on the density of the The housing, blinds and covering masks shall be constructed in radiographs. The following luminance levels are recommended such a manner that no disturbing light hinders the viewing of for the perception of information at various density levels. the radiographs (sec clause 3). The luminance (or brightness) of the illuminated radiograph shall be not less than : - 30 cd/m2 for film densities < 2,5 - 10 cd/mzfor film densities > 2,5 and, wherever possible, approximately 100 cd/m2 or higher. These minimum values require the following Screen luminance : Film density Minimum Screen luminance cdlm2 1,5 2 23 3 3,5 4 4,5 300 1 000 3 000 IO 000 IO 000 30 000 100 000 300 000 NOTE - The illuminator may be provided with a device for continuous control of Screen luminance. 2
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