EN 12254:1998+A2:2008
(Main + Amendment)Screens for laser working places - Safety requirements and testing
General Information
- Abstract
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).
- Status
- Withdrawn
- Publication Date
- 29-Jan-2008
- Withdrawal Date
- 23-Mar-2010
- 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
- Harmonized Standard2006/42/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)OJ Ref: C, C 214 OJ Date: 08-Sep-2009
Not Harmonized98/37/EC - MachineryOJ Ref: C, C 22 OJ Date: 28-Jan-2009
Relations
- 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
- Effective Date
- 19-Sep-2009
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CIS Institut d.o.o.
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Frequently Asked Questions
EN 12254:1998+A2:2008 is a standard published by the European Committee for Standardization (CEN). Its full title is "Screens for laser working places - Safety requirements and testing". This standard covers: 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).
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).
EN 12254:1998+A2:2008 is classified under the following ICS (International Classification for Standards) categories: 13.280 - Radiation protection; 13.340.20 - Head protective equipment; 31.260 - Optoelectronics. Laser equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12254:1998+A2:2008 has the following relationships with other standards: It is inter standard links to EN 12254:1998, EN 12254:1998/A1:2002, EN 12254:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12254:1998+A2:2008 is associated with the following European legislation: EU Directives/Regulations: 2006/42/EC, 98/37/EC; Standardization Mandates: M/079, M/396. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 12254:1998+A2:2008 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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 (maximum spectral transmittance and resistance to laser radiation)
Mean power (E) and single pulse energy density (H) for testing protective properties and resistance to laser radiation in the wavelength range
180 nm to 315 nm > 315 nm to 1050 nm > 1050 nm to 1400 nm > 315 nm to 1400 nm > 1400 nm to 106 nm
Maximum spectral trans-mittance at the laser wave-length For test condition/pulse duration in s (see Table 1) Scale number ττττ (λλλλ) D I, R M D D I, R M D I, R M
> 0,25 > 10-9 to 0,25 ≤ 10–9 > 5·10-3 > 2·10-3 > 10–9 to 0,01 ≤ 10–9 > 0,1 > 10-9 to 0,1 ≤ 10-9
ED HI, R EM ED ED HI, R HM ED HI, R EM
W/m2 J/m2 W/m2 W/m2 W/m2 J/m2 J/m2 W/m2 J/m2 W/m2 A1 10–1 0,01 3·102 3·1011 10 2,5·102 0,05 0,0015 104 103 1012 A2 10–2 0,1 3·103 3·1012 102 2,5·103 0,5 0,015 105 104 1013 A3 10–3 1 3·104 3·1013 103 2,5·104 5 0,15 106 105 1014 A4 10–4 10 3·105 3·1014 104 2,5·105 50 1,
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