EN 12254:1998/A1:2002

Screens for laser working places - Safety requirements and testing

Migrated from Progress Sheet (TC Comment) (2000-07-10): UAP of 4 months (TC Res C 165/1999) (CC/990525) ++ track changed by resolution 176/1999. Now Enq and FV. Scope extended to cover ++ beam diameter and short pulse duration too. New TD 20000112

Abschirmungen an Laserarbeitsplätzen - Sicherheitstechnische Anforderungen und Prüfung

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

Zasloni pri delu z laserji - Varovalne zahteve in preskušanje

General Information

• Status: Withdrawn
• Publication Date: 24-Sep-2002
• Withdrawal Date: 29-Jan-2008
• 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: 30-Jan-2008
• Completion Date: 30-Jan-2008
• Directive: 98/37/EC - Machinery
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Ref Project: SIST EN 12254:1999/A1:2003 - Screens for laser working places - Safety requirements and testing

Relations

• Amends: EN 12254:1998 - Screens for laser working places - Safety requirements and testing
• Effective Date: 22-Dec-2008
• Revised: EN 12254:2010 - Screens for laser working places - Safety requirements and testing
• Effective Date: 22-Dec-2008
• Merged Into: EN 12254:1998+A2:2008 - Screens for laser working places - Safety requirements and testing
• Effective Date: 18-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12254:1999/A1:2003
01-januar-2003
Zasloni pri delu z laserji - Varovalne zahteve in preskušanje
Screens for laser working places - Safety requirements and testing
Abschirmungen an Laserarbeitsplätzen - Sicherheitstechnische Anforderungen und
Prüfung
Ecrans pour postes de travail au laser - Exigences et essais de sécurité
Ta slovenski standard je istoveten z: EN 12254:1998/A1:2002
ICS:
13.280
13.340.20
31.260
SIST EN 12254:1999/A1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 12254:1998/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2002
ICS 13.280; 13.340.20; 31.260
English version
Screens for laser working places - Safety requirements and
testing
Ecrans pour postes de travail au laser - Exigences et Abschirmungen an Laserarbeitsplätzen -
essais de sécurité Sicherheitstechnische Anforderungen und Prüfung
This amendment A1 modifies the European Standard EN 12254:1998; it was approved by CEN on 1 August 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the Management Centre or to any CEN member.
This amendment 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, 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
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12254:1998/A1:2002 E
worldwide for CEN national Members.

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EN 12254:1998/A1:2002 (E)
Foreword
This document EN 12254:1998/A1:2002 has been prepared by Technical Committee CEN /TC 85 "Eye-protective
equipment", the secretariat of which is held by AFNOR.
This Amendment to the European Standard EN 12254:1998 shall be given the status of a national standard, either
by publication of an identical text or by endorsement, at the latest by March 2003, and conflicting national
standards shall be withdrawn at the latest by March 2003.
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EC Directive(s).
For relationship with EC Directive(s), see informative annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
2

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EN 12254:1998/A1:2002 (E)
Revised text
5.2 Stability to laser radiation
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
Maximum resistance to laser radiation in the wavelength range
spectral
> 315 nm
trans-
to > 1050 nm > 315 nm to
mittance at
6
180 nm to 315 nm 1050 nm to 1400 nm 1400 nm > 1400 nm to 10 nm
the laser
For test condition/pulse duration in s (see Table 1)
wavelength
Scale
numbert (l) D I, R M D D I, R M D I, R M
-9 –9 -9
> 10 > 10 > 10
–9 -3 -3 –9 -9
> 0,25 to 0,25£ 10 > 5·10 > 2·10 to 0,01£ 10 > 0,1 to 0,1£ 10
E H E E E H H E H E
D I, R M D D I, R M D I, R M
2 2 2 2 2 2 2 2 2 2
W/m J/m W/m W/m W/m J/m J/m W/m J/m W/m
–1 2 11 2 4 3 12
A1 10 0,01 3·10 3·10 10 2,5·10 0,05 0,0015 10 10 10
–2 3 12 2 3 5 4 13
A2 10 0,1 3·10 3·10 10 2,5·10 0,5 0,015 10 10 10
–3 4 13 3 4 6 5 14
A3
10 13·10 3·10 10 2,5·10 50,15 10 10 10
–4 5 14 4 5 7 6 15
A4 10 10 3·10 3·10 10 2,5·10 50 1,5 10 10 10
–5 2 6 15 5 6 2 8 7 16
A5 10 10 3·10 3·10 10 2,5·10 5·10 15 10 10 10
–6 3 7 16 6 7 3 2 9 8 17
A6 10 10 3·10 3·10 10 2,5·10 5·10 1,5·10 10 10 10
–7 4 8 17 7 8 4 3 10 9 18
A7
10 10 3·10 3·10 10 2,5·10 5·10 1,5·10 10 10 10
–8 5 9 18 8 9 5 4 11 10 19
A8 10 10 3·10 3·10 10 2,5·10 5·10 1,5·10 10 10 10
–9 6 10 19 9 10 6 5 12 11 20
A9 10 10 3·10 3·10 10 2,5·10 5·10 1,5·10 10 10 10
–10 7 11 20 10 11 7 6 13 12 21
A10 10 10 3·10 3·10 10 2,5·10 5·10 1,5·10 10 10 10
Replace the second paragraph of section 5.2 by the following:
The diameter d of the laser beam during this test shall be > 0,5 mm for pulse durations < 1 ns.
63
The diameter d of the laser beam during this test shall be > 2 mm in all other cases. A beam diameter d
63 65
between 0,5 mm and 2,0 mm may be used if the irradiance E(d) or radiant exposure H(d) used at a diameter d is
increased compared to the nominal value E or H , respectively by the factor given by the following formula:
n n
-d a-d a
/ /
2 2
E(d) / E = a + a ·e or H (d) / H = a + a ·e
n 0 1 n 0 1
where the constants are in the case of filters consisting of
 glass or containing glass
a = 0,769, a = 18,29, a = 0,4778.
0 1 2
 plastics
a = 1 a = 5,66, a = 0,4498
0 1 2
In the case of rectangular beams, the dimensions specified apply to the shortest side of the rectangle.
3

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EN 12254:1998/A1:2002 (E)
NOTE: The number of decimals of the coefficients was chosen to give a smooth transition at a 2 mm beam diameter. It
should not be interpreted as a requirement for measurement accuracy.
New 5.5
5.5 Mechanical strength
5.5.1 Flexible Screens
5.5.1.1 Testing machine
The tensile testing machine shall be power-driven and capable of maintaining the appropriate rate of
...