EN 12254:1998+A2:2008

Screens for laser working places - Safety requirements and testing

This standard specifies specific functional requirements and a product labelling system applicable to a range of temporary and permanent passive guards (in the following called screens) for protection against laser radiation. This standard includes test methods for testing functional performance and also the specification of the user documentation to be supplied with the product. The screens are designed to protect the user from uncontrolled emission of direct and/or diffuse radiation for a defined exposure to lasers, based on the necessary functional requirements for any particular application being determined by risk assessment principles. This standard applies to supervised screens for installations in working places at which laser radiation up to a maximum mean power of 100 W or single pulse energy of 30 J occurs within the spectral range between 180 nm (0,18 µm) and 106 nm (1000 µm). This standard applies to the protection against laser radiation only. This standard does not apply to other hazards including hazards from secondary radiation that can arise during, for example, material processing. This standard gives guidance on how to select such screens. The following are not considered to be within the scope of the standard: - laser enclosures and housings that are supplied as part of the laser product or are supplied to be fitted to a laser system to form a laser product (according to IEC 60 825-1:1998); - any screen whose protective properties are limited to a restricted range of angles of incidence (e.g. some interference filters).

Abschirmungen an Laserarbeitsplätzen - Sicherheitstechnische Anforderungen und Prüfung

Diese Europäische Norm legt Anforderungen an die Funktion sowie ein Produkt-Kennzeichnungssystem für zeitweilige oder permanente passive Schutzwände zum Schutz vor Laserstrahlung (nachfolgend Abschirmun¬gen genannt) fest. Diese Europäische Norm enthält Prüfverfahren für die Funktion und auch die Benutzerinformation, die mit dem Produkt zu liefern ist. Die Abschirmungen sind konstruiert, um den Benutzer vor unkontrollierter Ausbreitung von direkter und/oder gestreuter Strahlung für festgelegte Laserbestrahlung zu schützen, nachdem die erforderliche Funktion für die jeweilige Anwendung durch eine Risikoanalyse bestimmt wurde.
Diese Europäische Norm gilt für überwachte Abschirmungen für den Aufbau an Arbeitsplätzen, an denen Laserstrahlung mit maximal 100 W mittlerer Leistung oder 30 J Einzelimpulsenergie im Spektralbereich von 180 nm (0,18 µm) bis 106 nm (1000 µm) eingesetzt wird.
Diese Europäische Norm gilt nur für den Schutz gegen Laserstrahlung. Sie gilt nicht für andere Gefahren einschließlich der Gefährdung durch Sekundärstrahlung, die beispielsweise während der Materialbearbeitung entstehen kann.
Diese Europäische Norm gibt Hinweise zur Auswahl solcher Abschirmungen.
Folgendes fällt nicht unter den Anwendungsbereich dieser Europäische Norm:
   Laserumschließungen und -gehäuse, die als Teil der Lasereinrichtung oder zum Anbau an ein Laser¬system geliefert werden, um eine Lasereinrichtung (nach IEC 60825-1:1998) zu bilden;
   Abschirmungen, deren Schutzwirkung auf einen bestimmten Bereich von Einfallswinkeln beschränkt ist (wie beispielsweise einige Interferenzfilter).

Ecrans pour postes de travail au laser - Exigences et essais de sécurité

La présente norme spécifie les exigences fonctionnelles et le système d'étiquetage applicables à une gamme de
protecteurs laser passifs, temporaires ou permanents (dans la suite appelés écrans), destinés à la protection
contre le rayonnement laser. La présente norme comprend des méthodes d'essai pour les performances
fonctionnelles ainsi que des spécifications pour la documentation à fournir avec le produit. Les écrans sont conçus
pour protéger l'utilisateur de l'émission incontrôlée de rayonnement direct et/ou diffus pour une exposition définie
aux lasers, basée sur les spécifications fonctionnelles nécessaires pour toute application particulière déterminée
par les principes d'analyse du risque.
La présente norme s'applique aux écrans surveillés pour les installations des postes de travail où le rayonnement
laser atteint une puissance moyenne maximale de 100 W ou une énergie maximale par impulsion de 30 J, dans la
bande spectrale de 180 nm (0,18 μm) à 106 nm (1 000 μm).
La présente norme ne s'applique qu'à la protection contre le rayonnement laser. Elle ne s'applique pas aux autres
risques, y compris les risques dus au rayonnement secondaire qui peuvent apparaître, par exemple, pendant le
traitement des matériaux.
De plus, la présente norme donne des indications pour le choix de tels écrans.
Ne sont pas traités dans cette norme :
- les enceintes et capotages laser qui font partie d'un équipement laser, ou qui sont fournis pour être incorporés à
un système laser et former un équipement laser (selon la CEI 60825-1:1998) ;
- tout écran qui ne protège que dans une gamme réduite d'angles d'incidence (par exemple certains filtres
interférentiels).

Zasloni pri delu z laserji - Varovalne zahteve in preskušanje

General Information

• Status: Withdrawn
• Publication Date: 29-Jan-2008
• Withdrawal Date: 23-Mar-2010
• ICS: 13.280 - Radiation protection
• ICS: 13.340.20 - Head protective equipment
• ICS: 31.260 - Optoelectronics. Laser equipment
• Technical Committee: CEN/TC 85 - Eye-protective equipment
• Drafting Committee: CEN/TC 85 - Eye-protective equipment
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 24-Mar-2010
• Completion Date: 24-Mar-2010
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 98/37/EC - Machinery
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: SIST EN 12254:1999+A2:2008 - Screens for laser working places - Safety requirements and testing

Relations

• Merged From: EN 12254:1998 - Screens for laser working places - Safety requirements and testing
• Effective Date: 19-Jan-2023
• Merged From: EN 12254:1998/A1:2002 - Screens for laser working places - Safety requirements and testing
• Effective Date: 18-Jan-2023
• Replaced By: EN 12254:2010 - Screens for laser working places - Safety requirements and testing
• Effective Date: 19-Sep-2009

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Screens for laser working places - Safety requirements and testingZasloni pri delu z laserji - Varovalne zahteve in preskušanjeEcrans pour postes de travail au laser - Exigences et essais de sécuritéAbschirmungen an Laserarbeitsplätzen - Sicherheitstechnische Anforderungen und PrüfungTa slovenski standard je istoveten z:EN 12254:1998+A2:2008SIST EN 12254:1999+A2:2008en,fr,de31.26013.340.2013.280ICS:SLOVENSKI
STANDARDSIST EN 12254:1999+A2:200801-maj-2008

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12254:1998+A2
January 2008 ICS 13.280; 13.340.20; 31.260 Supersedes EN 12254:1998 English Version
Screens for laser working places - Safety requirements and testing
Ecrans pour postes de travail au laser - Exigences et essais de sécurité
Abschirmungen an Laserarbeitsplätzen - Sicherheitstechnische Anforderungen und Prüfung This European Standard was approved by CEN on 16 October 1998, includes Amendment 1 approved by CEN on 1 August 2002 and
Amendment 2 approved by CEN on 26 December 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12254:1998+A2:2008: E

!!!!Resistance to ignition"""".10 6 Marking.11 7 Information supplied by the manufacturer.11 Annex A (informative)
Principles.13 A.1 Limiting values.13 A.2 Time base used to calculate the MPE values.13 A.3 Stability to laser radiation.13 Annex B (informative)
Selection of screens for laser working places.15 B.1 General.15 B.2 Pulsed lasers.15 B.3 !!!!Caution for users of laser safety screens.17 Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC.18 Annex ZB (informative)
####Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC.19

and # $. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

Test condition (Corresponding laser designation) Pulse duration, in seconds Number of pulses D
(Continuous wave (CW) laser) I
(Pulsed laser) R
(Giant-pulsed laser) M
(Mode-coupled pulsed laser) 100 10-6 to 10-2 10-9 to 10-6 ≤ 10-9 1 1000 1000 100 000 NOTE: The listed pulse durations are values of typical lasers. A laser with a pulse length in this range of values is recommended for testing. Total exposure time for each test should be about 100 s.
4.2 Stability to laser radiation The screens shall not lose their protective properties and shall stay within the scale number under effect of laser radiation with the power and energy density as specified in table 2 including induced transmission (reversible bleaching). 4.3 Stability to UV radiation The requirements of 4.1 to 4.2 shall be met after exposure for 50 h as specified in clause 6 of EN 168:1995. The spectral transmittance at the laser wavelengths shall not exceed the maximum permissible spectral transmittance of the corresponding scale number. 4.4 Stability at elevated temperature The requirements of 4.1 to 4.2 shall be met after the screens have been stored for 5 h in a climatic cabinet at a temperature of (55 + 2)°C and a relative humidity of at least 95 %, and then stored for at least 2 h at room temperature (23 + 5)°C. !deleted text"

!!!!Table 2 — Scale numbers of screens for laser working places (max
...