SIST EN ISO 25980:2023

Health and safety in welding and allied processes - Transparent welding curtains, strips and screens for arc welding processes (ISO 25980:2023)

This document specifies safety requirements for transparent welding curtains, strips and screens to be used in workplaces where arc welding is taking place. They are intended to provide protection against harmful levels of optical radiation and spatter for workers who are in the vicinity of arc welding processes but not involved in the welding itself. They are intended to reduce the discomfort glare from the arc but also allow sufficient luminous transmittance to permit a view into the workspace behind.
The transparent welding curtains can also be used in other applications as long as the UV- and blue-light emissions are less than in arc welding and the transmitted infrared irradiance is below applicable exposure limits. They are designed to be used at a distance from the arc of at least 1 m.
Welding curtains, strips and screens specified in this document are not intended to replace welding filters. For intentional viewing of welding arcs, other means of protection are used, see ISO 16321-1 and ISO 16321-2.
This document is not applicable to protection against laser radiation, for which ISO 19818-1 applies.

Arbeits - und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren - Durchsichtige Schweißvorhänge, -streifen und -abschirmungen für Lichtbogenschweißprozesse (ISO 25980:2023)

Dieses Dokument legt sicherheitstechnische Anforderungen für durchsichtige Schweiß-vorhänge,  streifen und  abschirmungen fest, die an Arbeitsplätzen verwendet werden, an denen Lichtbogenschweißen durchgeführt wird. Sie sollen Arbeiter, die sich in der Nähe der Lichtbogenschweißprozesse befinden, jedoch nicht aktiv an dem Schweißvorgang beteiligt sind, vor schädlichen Niveaus optischer Strahlung und Spritzern schützen. Ferner sollen sie die unangenehme Blendung durch den Lichtbogen vermindern und gleichzeitig einen ausreichenden Lichttransmissionsgrad bieten, der einen Einblick in den dahinterliegenden Arbeitsplatz ermöglicht.
Die durchsichtigen Schweißvorhänge können auch bei anderen Anwendungen verwendet werden, sofern die UV  und Blaulichtstrahlungsemissionen geringer als beim Lichtbogenschweißen sind und die durchgelassene infrarote Bestrahlungsstärke unter den geltenden Expositionsgrenzwerten liegt. Sie sind dafür bestimmt, in einem Abstand von mindestens 1 m zu dem Lichtbogen eingesetzt zu werden.
Schweißvorhänge,  streifen und  abschirmungen, die in diesem Dokument festgelegt sind, sind kein Ersatz für Schweißerschutzfilter. Für die beabsichtigte Betrachtung von Schweißlichtbögen werden andere Schutzvorrichtungen verwendet, siehe ISO 16321 1 und ISO 16321 2.
Dieses Dokument ist nicht auf den Schutz vor Laserstrahlung anwendbar, für die ISO 19818 1 gilt.

Hygiène et sécurité en soudage et techniques connexes - Rideaux, lanières et écrans transparents pour les procédés de soudage à l'arc (ISO 25980:2023)

Le présent document spécifie les prescriptions de sécurité relatives aux rideaux, lanières et écrans de soudage transparents destinés à être utilisés sur les lieux de travail où du soudage à l'arc est réalisé. Ils sont destinés à assurer la protection contre les niveaux nocifs de rayonnement optique et contre les projections, des travailleurs qui se trouvent à proximité des procédés de soudage à l'arc mais qui ne prennent pas part au soudage lui-même. Ils sont destinés à réduire l'éblouissement inconfortable provenant de l'arc, mais ils permettent également un facteur de transmission dans le visible suffisant pour permettre une vue sur l'espace de travail situé derrière.
Les rideaux de soudage transparents peuvent également être utilisés dans d'autres applications, pour autant que les émissions de lumière bleue et UV soient inférieures à celles du soudage à l'arc et que l’éclairement énergétique infrarouge transmis soit inférieur aux limites d'exposition applicables. Ils sont conçus pour être utilisés à une distance de l'arc d'au moins 1 m.
Les rideaux, lanières et écrans de soudage spécifiés dans le présent document ne sont pas destinés à remplacer les filtres de soudage. Pour l'observation intentionnelle des arcs de soudage, d'autres moyens de protection sont utilisés, voir l’ISO 16321-1 et l’ISO 16321-2.
Le présent document ne s’applique pas à la protection contre les rayonnements laser pour laquelle l'ISO 19818-1 s'applique.

Varnost in zdravje pri varjenju in sorodnih postopkih - Prosojne zavese, trakovi in zasloni pri postopkih obločnega varjenja (ISO 25980:2023)

Ta dokument določa varnostne zahteve za prosojne zavese, trakove in zaslone za zaščito delovnih mest pri postopkih obločnega varjenja. Ti izdelki so namenjeni zaščiti pred škodljivimi ravnmi optičnega sevanja in obrizgom delavcev, ki so v bližini mesta izvajanja obločnega varjenja, pri čemer sami varjenja ne izvajajo. Namenjeni so za zmanjševanje neprijetnega bleščanja obloka, obenem pa omogočajo zadostno prepustnost svetlobe, da je skoznje mogoče videti delovno mesto.
Prosojne zavese je mogoče uporabiti tudi za druge namene pod pogojem, da so emisije UV-svetlobe in modre svetlobe manjše kot pri obločnem varjenju in je prepustnost infrardečih žarkov pod veljavnimi mejnimi vrednostmi za izpostavljenost. Zasnovane so za uporabo na razdalji vsaj 1 m od obloka.
Zavese, trakovi in zasloni, opisani v tem dokumentu, niso predvideni kot zamenjava za filtre za varjenje. Za namerno gledanje v varilni oblok se uporabljajo druga sredstva za zaščito (glej standarda ISO 16321-1 in ISO 16321-2).
Ta dokument se ne uporablja za zaščito pred laserskih sevanjem, za katero se uporablja standard ISO 19818-1.

General Information

• Status: Published
• Public Enquiry End Date: 01-Oct-2022
• Publication Date: 05-Jun-2023
• ICS: 13.100 - Occupational safety. Industrial hygiene
• ICS: 13.340.99 - Other protective equipment
• ICS: 25.160.01 - Welding, brazing and soldering in general
• ICS: 25.160.10 - Welding processes
• Technical Committee: VAR - Welding
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jun-2023
• Due Date: 06-Aug-2023
• Completion Date: 06-Jun-2023
• Ref Project: EN ISO 25980:2023 - Health and safety in welding and allied processes - Transparent welding curtains, strips and screens for arc welding processes (ISO 25980:2023, Corrected version 2023-08)

Relations

• Replaces: SIST EN ISO 25980:2015 - Health and safety in welding and allied processes - Transparent welding curtains, strips and screens for arc welding processes (ISO 25980:2014)
• Effective Date: 01-Jul-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 25980:2023
01-julij-2023
Nadomešča:
SIST EN ISO 25980:2015
Varnost in zdravje pri varjenju in sorodnih postopkih - Prosojne zavese, trakovi in
zasloni pri postopkih obločnega varjenja (ISO 25980:2023)
Health and safety in welding and allied processes - Transparent welding curtains, strips
and screens for arc welding processes (ISO 25980:2023)
Arbeits - und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren -
Durchsichtige Schweißvorhänge, -streifen und -abschirmungen für
Lichtbogenschweißprozesse (ISO 25980:2023)
Hygiène et sécurité en soudage et techniques connexes - Rideaux, lanières et écrans
transparents pour les procédés de soudage à l'arc (ISO 25980:2023)
Ta slovenski standard je istoveten z: EN ISO 25980:2023
ICS:
13.100 Varnost pri delu. Industrijska Occupational safety.
higiena Industrial hygiene
13.340.99 Druga varovalna oprema Other protective equipment
25.160.01 Varjenje, trdo in mehko Welding, brazing and
spajkanje na splošno soldering in general
SIST EN ISO 25980:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 25980:2023

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SIST EN ISO 25980:2023


EN ISO 25980
EUROPEAN STANDARD

NORME EUROPÉENNE

May 2023
EUROPÄISCHE NORM
ICS 13.100; 25.160.10 Supersedes EN ISO 25980:2014
English Version

Health and safety in welding and allied processes -
Transparent welding curtains, strips and screens for arc
welding processes (ISO 25980:2023)
Hygiène et sécurité en soudage et techniques connexes Arbeits - und Gesundheitsschutz beim Schweißen und
- Rideaux, lanières et écrans transparents pour les bei verwandten Verfahren - Durchsichtige
procédés de soudage à l'arc (ISO 25980:2023) Schweißvorhänge, -streifen und -abschirmungen für
Lichtbogenschweißprozesse (ISO 25980:2023)
This European Standard was approved by CEN on 17 February 2023.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 25980:2023 E
worldwide for CEN national Members.

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SIST EN ISO 25980:2023
EN ISO 25980:2023 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 25980:2023
EN ISO 25980:2023 (E)
European foreword
This document (EN ISO 25980:2023) has been prepared by Technical Committee ISO/TC 44 "Welding
and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding and allied
processes” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2023, and conflicting national standards
shall be withdrawn at the latest by November 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 25980:2014.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 25980:2023 has been approved by CEN as EN ISO 25980:2023 without any modification.


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SIST EN ISO 25980:2023

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SIST EN ISO 25980:2023
INTERNATIONAL ISO
STANDARD 25980
Second edition
2023-05
Health and safety in welding and
allied processes — Transparent
welding curtains, strips and screens
for arc welding processes
Hygiène et sécurité en soudage et techniques connexes — Rideaux,
lanières et écrans transparents pour les procédés de soudage à l'arc
Reference number
ISO 25980:2023(E)
© ISO 2023

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SIST EN ISO 25980:2023
ISO 25980:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Transmittance . 2
4.1.1 Infrared transmittance . 2
4.1.2 Effective ultraviolet transmittance . 2
4.1.3 Effective blue-light transmittance . 2
4.1.4 Luminous transmittance . 2
4.2 Resistance to ultraviolet radiation . 3
4.3 Resistance to flame spread . 3
4.4 Seam and eyelet strength. 3
5 Test and calculation methods .3
5.1 Transmittance . 3
5.1.1 General . 3
5.1.2 Effective ultraviolet transmittance . 4
5.1.3 Effective blue-light transmittance . 4
5.1.4 Luminous transmittance . 4
5.2 Resistance to ultraviolet radiation . 5
5.3 Resistance to flame spread . 5
5.3.1 Test apparatus . 5
5.3.2 Test specimens . 6
5.3.3 Test procedure. 6
5.3.4 Test report . 7
5.4 Seam and eyelet strength. 7
5.4.1 Test apparatus . 7
5.4.2 Test specimens . 7
5.4.3 Test procedure. 8
5.4.4 Test report . 8
6 Marking . . 8
6.1 General . 8
6.2 Mandatory markings . 8
7 Information for users . 8
Annex A (informative) Basis of the transmittance requirements of this document.10
Annex B (informative) Selection of curtain .14
Bibliography .15
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each 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, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 9, Health and safety, in collaboration with the European Committee for Standardization
(CEN) Technical Committee CEN/TC 121, Welding and allied processes, in accordance with the Agreement
on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 25980:2014), which has been technically
revised.
The main changes are as follows:
— hazard level G has been removed;
— requirements regarding luminous and effective blue-light transmittance have been added.
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html. Official
interpretations of ISO/TC 44 documents, where they exist, are available from this page:
https://committee.iso.org/sites/tc44/home/interpretation.html.
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SIST EN ISO 25980:2023
INTERNATIONAL STANDARD ISO 25980:2023(E)
Health and safety in welding and allied processes —
Transparent welding curtains, strips and screens for arc
welding processes
1 Scope
This document specifies safety requirements for transparent welding curtains, strips and screens
to be used in workplaces where arc welding is taking place. They are intended to provide protection
against harmful levels of optical radiation and spatter for workers who are in the vicinity of arc welding
processes but not involved in the welding itself. They are intended to reduce the discomfort glare from
the arc but also allow sufficient luminous transmittance to permit a view into the workspace behind.
The transparent welding curtains can also be used in other applications as long as the UV- and blue-
light emissions are less than in arc welding and the transmitted infrared irradiance is below applicable
exposure limits. They are designed to be used at a distance from the arc of at least 1 m.
Welding curtains, strips and screens specified in this document are not intended to replace welding
filters. For intentional viewing of welding arcs, other means of protection are used, see ISO 16321-1 and
ISO 16321-2.
This document is not applicable to protection against laser radiation, for which ISO 19818-1 applies.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4007:2018, Personal protective equipment — Eye and face protection — Vocabulary
ISO/CIE 11664-1, Colorimetry — Part 1: CIE standard colorimetric observers
ISO/CIE 11664-2, Colorimetry — Part 2: CIE standard illuminants
ISO 18526-2:2020, Eye and face protection — Test methods — Part 2: Physical optical properties
ISO 18526-3:2020, Eye and face protection — Test methods — Part 3: Physical and mechanical properties
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4007 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
transparent
characteristic of welding curtains, strips and screens that permit visibility of the working place without
implying to be glass clear
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
3.2
effective ultraviolet transmittance
τ
UV
normalized value of the spectral transmittance averaged between 200 nm and 400 nm weighted by the
relative spectral effectiveness function for ultraviolet
Note 1 to entry: The effective ultraviolet transmittance is usually expressed as a percentage and calculated using
Formula (1).
3.3
effective blue-light transmittance
τ
B
normalized value of the spectral transmittance averaged between 300 nm and 700 nm weighted by the
relative spectral effectiveness function for blue light
Note 1 to entry: The effective blue-light transmittance is usually expressed as a percentage and calculated using
Formula (2).
3.4
luminous transmittance
τ
V
ratio of the luminous flux transmitted to the incident luminous flux for a specified illuminant and
photopic vision
Note 1 to entry: The luminous transmittance is usually expressed as a percentage and calculated using
Formula (3).
[SOURCE: ISO 4007:2018, 3.10.1.32, modified — Note 1 to entry revised, Note 2 to entry removed.]
4 Requirements
4.1 Transmittance
4.1.1 Infrared transmittance
This document does not provide infrared transmittance requirements. The intensity of the infrared
radiation from the welding arc at a distance of more than 1 m is too low to represent a hazard.
Annex A provides information on the basis of the transmittance requirements of this document.
4.1.2 Effective ultraviolet transmittance
When tested in accordance with 5.1.2, the weighted effective ultraviolet transmittance, τ , in the
UV
wavelength range between 200 nm and 400 nm shall be less than 0,002 %.
NOTE Measurement of spectral transmittance at wavelengths below 250 nm creates measurement problems
with noise. Most plastic materials (e.g. PVC and PC) have a very high attenuation and provide sufficient protection
at wavelengths < 250 nm.
4.1.3 Effective blue-light transmittance
When tested in accordance with 5.1.3, the weighted effective blue-light transmittance, τ , in the
B
wavelength range between 300 nm to 700 nm shall be less than 1,0 %.
4.1.4 Luminous transmittance
When tested in accordance with 5.1.4, the classification based on the luminous transmittance can be
expressed in the grades according to Table 1. Annex B provides information on the selection of curtain
and grade.
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
Table 1 — Luminous transmittance
Luminous transmittance
τ
v,D65
Grade
%
Minimum Maximum
Light 29,0 100,0
Medium 8,5 29,0
Dark 1,0 8,5
a
Extra dark 0,02 1,0
NOTE The maximum values are taken as equal to or less than and the minimum values are taken as greater than.
a
Extra dark is normally intended for separation of adjacent operations.
4.2 Resistance to ultraviolet radiation
To ensure that the required protection is maintained and the discomfort glare protection is not
markedly altered after exposure to UV radiation, the curtain shall be exposed to a xenon arc that has
similar spectral characteristics to welding arcs.
After exposure to UV radiation due to the test specified in 5.2, the curtain shall remain in conformity
with 4.1.2 and 4.1.3 and the relative change in luminous transmittance shall not be greater than ± 20 %.
4.3 Resistance to flame spread
When tested in accordance with 5.3.3, the welding curtain, strip or screen material is considered to be
satisfactory if for all three samples:
— the flame does not reach the test mark with the burner in position;
— the flame self-extinguishes after removal of the burner;
— the material does not continue to glow for more than 3,0 s after removal of the burner.
4.4 Seam and eyelet strength
If eyelets are used and when welding curtains with thickness < 0,5 mm are tested in accordance with
5.4, there shall be no tearing of any seam or eyelet and/or removal of any eyelet.
5 Test and calculation methods
5.1 Transmittance
5.1.1 General
After preparation, the test specimens shall be maintained at a temperature of (23 ± 5) °C and relative
humidity of less than 70 % for a minimum of 16 h before testing.
The methods for measuring spectral transmittance according to ISO 18526-2:2020, Clause 6 shall be
applied.
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
5.1.2 Effective ultraviolet transmittance
τ (%) is calculated using Formula (1):
UV
400 nm
τλ()⋅⋅Sd()λλ
∫
200 nm
τ =×100 (1)
UV
400 nm
Sd()λλ⋅
∫
200 nm
where
τ(λ) is the spectral transmittance in the range 200 nm to 400 nm;
S(λ) is the spectral efficiency for UV radiation;
λ is the wavelength in nm.
5.1.3 Effective blue-light transmittance
τ (%) is calculated using Formula (2):
B
700nm
τλ()⋅⋅Bd()λλ
∫
300nm
τ =× 100 (2)
B
700nm
Bd()λλ⋅
∫
300nm
where
τ(λ) is the spectral transmittance in the range 300 nm to 700 nm;
B(λ) is the blue-light hazard function;
λ is the wavelength in nm.
5.1.4 Luminous transmittance
For the purposes of this document, CIE illuminant D65, τ (%), is used and calculated using
v,D65
Formula (3).
780nm
τλ()⋅⋅SV()λλ()⋅dλ
D65
∫
380nm
τ =×100 (3)
v,D65
780nm
SV()λλ⋅⋅() dλ
D65
∫
3880nm
where
τ(λ) is the spectral transmittance in the range 380 nm to 780 nm;
V(λ) is the CIE 2° spectral luminous efficiency function for photopic vision in accordance with
ISO/CIE 11664-1;
S (λ) is the spectral distribution of the incident radiation of CIE standard Illuminant D65
D65
in accordance with ISO/CIE 11664-2;
λ is the wavelength in nm.
NOTE The values of the product S (λ)·V(λ) are given in ISO 4007:2018, Table A.3 and can be interpolated
D65
when necessary.
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
5.2 Resistance to ultraviolet radiation
To ensure the stability of the spectral absorption properties of the curtain, a sample shall be tested
in accordance with ISO 18526-3:2020, 6.8.3 in a xenon arc test chamber for an exposure time of
(100,0 ± 0,2) h. The spectral transmittance is then tested to ensure that the curtain still meets the
attenuation requirements of 4.1.2 and 4.1.3. Record the relative change in luminous transmittance as a
percentage.
5.3 Resistance to flame spread
5.3.1 Test apparatus
The following apparatus is required:
5.3.1.1 Sample holder, made of rigid metal or non-flammable material with the construction and
dimensions shown in Figure 1. The test marks are on the front of part 1 and the locating pins project
from the rear of part 1, see Figure 2.
Dimensions in millimetres
Key
1 test mark
2 sample holder part I
3 sample holder part II
t thickness of sample holder
NOTE All dimensions have tolerances of ± 0,5 mm.
Figure 1 — Sample holder
5.3.1.2 Propane burner, having a nominal visible flame height of 20 mm when put in an upright
position (see Figure 2).
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
Dimensions in millimetres
Key
1 mounting device
2 sample holder part I
3 sample holder part II
4 sample
5 flame
a
Position of the burner when setting the flame height.
NOTE All dimensions have tolerances of ± 0,5 mm.
Figure 2 — Burner and testing setup
5.3.2 Test specimens
There shall be three samples cut from the welding curtain, (190 ± 5) mm long and (90 ± 2) mm wide.
5.3.3 Test procedure
a) Testing shall be carried out at (23 ± 5) °C and a relative humidity of less than 70 % in a draught-free
environment.
b) Clamp the sample between the two parts of the sample holder (see Figure 2). The lower end of the
sample shall be (40 ± 2) mm above the lower end of the sample holder.
c) Suspend the sample and holder as shown in Figure 2.
d) Set the burner upright and allow to burn for at least 60 s.
e) Turn the burner by an angle of 45°.
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SIST EN ISO 25980:2023
ISO 25980:2023(E)
f) Direct the burner at the bottom of the sample so that the tip of the flame hits the sample in the
geometric centre of the lower edge.
g) After 15 s remove the burner and observe whether or not the flame self-extinguishes and the
material has ceased to glow within 3,0 s.
h) Carry out a visual inspection to see if the flame has reached the test mark 150 mm above the lower
end of the sample.
5.3.4 Test report
Report whether:
a) the flame does not reach the test mark with the burner in position;
b) the flame self-extinguishes after removal of the burner;
c) the material does not continue to glow for more than 3,0 s after removal of the burner.
5.4 Seam and eyelet strength
5.4.1 Test apparatus
The following apparatus is required:
+4
5.4.1.1 Bench stand with an attached horizontal clamp to hold sheet material 100 mm wide evenly
−6
in its jaws, allowing the material to hang down freely. The stand shall have a metallic hook of circular
cross-section of nominal 6 mm diameter to attach the sheet material by an eyelet. The stand shall allow
a sample to hang freely by at least 600 mm.
5.4.1.2 Minimum weight of 7 kg attached to a metallic hook of circular cross-section of nominal 6 mm
diameter.
5.4.1.3 Clamp as in item a) but not attached to the stand, with a hole allowing the weight to be hung
from the clamp using the attached hook as in item b).
5.4.2 Test specimens
5.4.2.1 Specimen 1
+4
The dimensions of the test specimen shall be 100 mm along the side containing the eyelet under test
−6
(if any) and parallel to the seam under test (if any). The other dimension is not critical and should be
between 150 mm and 200 mm. If the sample has no eyelet it should be provided with a punched hole
+1 +1
with a diameter of 10 mm and 25 mm short of the sides.
−1 −1
5.4.2.2 Specimen 2
The dimensions of the test specimen shall be between 200 mm and 350 mm along the side containing
+1
two eyelets under test (if any). The eyelets should be 25 mm short of the cutting edge and parallel to
−1
the seam under test (if any). The other dimension is not critical and should be between 100 mm and
200 mm, measured from the underside of the seam. If the sample has no
...

SLOVENSKI STANDARD
oSIST prEN ISO 25980:2022
01-september-2022
Varnost in zdravje pri varjenju in sorodnih postopkih - Prosojne zavese, trakovi in
zasloni pri postopkih obločnega varjenja (ISO/DIS 25980:2022)
Health and safety in welding and allied processes - Transparent welding curtains, strips
and screens for arc welding processes (ISO/DIS 25980:2022)
Arbeits - und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren –
Durchsichtige Schweißvorhänge, -streifen und -abschirmungen für
Lichtbogenschweißprozesse (ISO/DIS 25980:2022)
Hygiène et sécurité en soudage et techniques connexes - Rideaux, lanières et écrans
transparents pour les procédés de soudage à l'arc (ISO/DIS 25980:2022)
Ta slovenski standard je istoveten z: prEN ISO 25980
ICS:
13.100 Varnost pri delu. Industrijska Occupational safety.
higiena Industrial hygiene
13.340.99 Druga varovalna oprema Other protective equipment
25.160.01 Varjenje, trdo in mehko Welding, brazing and
spajkanje na splošno soldering in general
oSIST prEN ISO 25980:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 25980:2022

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oSIST prEN ISO 25980:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 25980
ISO/TC 44/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2022-07-15 2022-10-07
Health and safety in welding and allied processes —
Transparent welding curtains, strips and screens for arc
welding processes
Hygiène et sécurité en soudage et techniques connexes — Rideaux, lanières et écrans transparents pour les
procédés de soudage à l'arc
ICS: 13.100; 25.160.10
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 25980:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

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oSIST prEN ISO 25980:2022
ISO/DIS 25980:2022(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 25980
ISO/TC 44/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:

Health and safety in welding and allied processes —
Transparent welding curtains, strips and screens for arc
welding processes
Hygiène et sécurité en soudage et techniques connexes — Rideaux, lanières et écrans transparents pour les
procédés de soudage à l'arc
ICS: 13.100; 25.160.10
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2022
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
IN ADDITION TO THEIR EVALUATION AS
or ISO’s member body in the country of the requester. BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
ISO copyright office
USER PURPOSES, DRAFT INTERNATIONAL
CP 401 • Ch. de Blandonnet 8
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
CH-1214 Vernier, Geneva
POTENTIAL TO BECOME STANDARDS TO
Phone: [phone]
WHICH REFERENCE MAY BE MADE IN
Reference number
Email: [e-mail]
NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 25980:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
  © ISO 2022 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

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oSIST prEN ISO 25980:2022
ISO/DIS 25980:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Transmittance . 2
4.1.1 General . 2
4.1.2 Effective ultraviolet transmittance . 2
4.1.3 Effective blue-light transmittance . 2
4.1.4 Luminous transmittance . 2
4.2 Resistance to ultraviolet radiation . 3
4.3 Resistance to flame spread . 3
4.4 Seam and eyelet strength. 3
5 Test and calculation methods .3
5.1 Transmittance . 3
5.1.1 General . 3
5.1.2 Effective ultraviolet transmittance . 3
5.1.3 Effective blue-light transmittance . 4
5.1.4 Luminous transmittance . 4
5.2 Resistance to ultraviolet radiation . 4
5.3 Resistance to flame spread . 5
5.3.1 Test apparatus . 5
5.3.2 Test specimens . 6
5.3.3 Test procedure. 6
5.3.4 Test report . 7
5.4 Seam and eyelet strength. 7
5.4.1 Test apparatus . 7
5.4.2 Test specimen . 7
5.4.3 Test procedure. 8
5.4.4 Test report . 8
6 Marking . . 8
6.1 General . 8
6.2 Mandatory markings . 8
7 Information for users . 8
Annex A (informative) Basis of the transmittance requirements of this standard .10
Annex B (informative) Selection of curtain .14
Bibliography .15
iii
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oSIST prEN ISO 25980:2022
ISO/DIS 25980:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each 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, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee
SC 9, Health and safety.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
Official interpretations of TC 44 documents, where they exist, are available from this page:
https://committee.iso.org/sites/tc44/home/interpretation.html.
This second edition cancels and replaces the first edition (ISO 25980:2014), which has been technically
revised. The main changes compared to the previous edition are as follows:
— The hazard level G has been removed;
— Requirements regarding luminous and effective blue-light transmittance have been added.
iv
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oSIST prEN ISO 25980:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 25980:2022(E)
Health and safety in welding and allied processes —
Transparent welding curtains, strips and screens for arc
welding processes
1 Scope
This International Standard specifies safety requirements for transparent welding curtains, strips,
and screens to be used in workplaces where arc welding is taking place. They are intended to provide
protection of workers against harmful levels of optical radiation and spatter who are in the vicinity of
arc welding processes but not involved in the welding itself. They are intended to reduce the discomfort
glare from the arc but also allow sufficient luminous transmittance to permit a view into the workspace
behind. The transparent welding curtains may also be used in other applications as long as the UV- and
blue-light emissions are less than in arc welding. They are designed to be used at a distance from the
arc of at least 1 m.
Welding curtains, strips, and screens specified in this International Standard are not intended to
replace welding filters. For intentional viewing of welding arcs other means of protection are used, see
ISO 16321-1 and ISO 16321-2.
This International Standard is not applicable for protection against laser radiation for which ISO 19818-1
applies.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 4007:2018, Personal protective equipment — Eye and face protection — Vocabulary
ISO 11664-2:2007, Colorimetry — Part 2: CIE standard illuminants
ISO 18526-2:2020, Eye and face protection — Test methods — Part 2: Physical optical properties
ISO 18526-3:2020, Eye and face protection — Test methods — Part 3: Physical and mechanical properties
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4007 and the following apply.
3.1
transparent
characteristic of welding curtains, strips, and screens that permit visibility of the working place without
implying to be glass clear
3.2
effective ultraviolet transmittance
τ
UV
normalized value of the spectral transmittance averaged between 200 nm and 400 nm weighted by the
relative spectral effectiveness function for ultraviolet
Note 1 to entry: The effective ultraviolet transmittance is usually expressed as a percentage and calculate from
Formula (1).
1
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oSIST prEN ISO 25980:2022
ISO/DIS 25980:2022(E)
3.3
effective blue-light transmittance
τ
B
normalized value of the spectral transmittance averaged between 300 nm and 700 nm weighted by the
relative spectral effectiveness function for blue-light
Note 1 to entry: The effective blue-light transmittance is usually expressed as a percentage and calculate from
Formula (2).
3.4
luminous transmittance
τ
V
ratio of the luminous flux (3.4.4) transmitted to the incident luminous flux for a specified illuminant
(3.2.6) and photopic vision
Note 1 to entry: The luminous transmittance is usually expressed as a percentage and calculated from
Formula (3).
[SOURCE: ISO 4007:2018, 3.10.1.32]
4 Requirements
4.1 Transmittance
4.1.1 General
NOTE 1 The intensity of the infrared radiation from the welding arc at a distance of more than 1 m is too low
to represent a hazard.
NOTE 2 Measurement of spectral transmittance at wavelengths below 250 nm create measurement problems
with noise. Most plastic materials (e.g. PVC and PC) have a very high attenuation and provide sufficient protection
in the wavelength range shorter than 250 nm.
4.1.2 Effective ultraviolet transmittance
When tested in accordance with 5.1.2 the weighted effective ultraviolet transmittance, τ , in the
UV
wavelength range between 200 nm and 400 nm shall be less than 0,002 %.
4.1.3 Effective blue-light transmittance
When tested in accordance with 5.1.3 the weighted effective blue-light transmittance, τ , in the
B
wavelength range between 300 nm to 700 nm shall be less than 1,0 %.
4.1.4 Luminous transmittance
When tested in accordance with 5.1.4 the classification based on the luminous transmittance can be
expressed in the grades according to Table 1.
Table 1 — Luminous transmittance
Luminous transmittance, τ
v,D65
Grade
Min Max
Light 29,0 100,0
Medium 8,5 29,0
NOTE  The maximum values are taken as equal or less than and the minimum values are taken as greater than.
a
Extra dark is normally intended for separation of adjacent operations.
2
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oSIST prEN ISO 25980:2022
ISO/DIS 25980:2022(E)
Table 1 (continued)
Luminous transmittance, τ
v,D65
Grade
Min Max
Dark 1,0 8,5
a
Extra dark 0,02 1,0
NOTE  The maximum values are taken as equal or less than and the minimum values are taken as greater than.
a
Extra dark is normally intended for separation of adjacent operations.
4.2 Resistance to ultraviolet radiation
To ensure that the required protection is maintained and the discomfort glare protection is not
markedly altered after exposure to UV radiation, the curtain shall be exposed to a xenon arc that has
similar spectral characteristics to welding arcs.
After exposure to UV radiation due to the test specified in 5.2, the curtain shall remain compliant with
4.1.2 and 4.1.3 and the relative change in luminous transmittance shall not be greater than ± 20 %.
4.3 Resistance to flame spread
The welding curtain, strip, or screen material is considered to be satisfactory, if for all 3 samples
— the flame does not reach the test mark with the burner in position;
— the flame self-extinguishes after removal of the burner; and
— the material does not continue to glow for more than 3,0 s after removal of the burner.
4.4 Seam and eyelet strength
In case eyelets are used and when welding curtains with thickness of less than 0,5 mm are tested in
accordance with 5.4 there shall be no tearing of any seam, tearing of any eyelet, and/or removal of any
eyelet.
5 Test and calculation methods
5.1 Transmittance
5.1.1 General
After preparation, the test specimens shall be maintained at a temperature of (23 ± 5) °C and relative
humidity of less than 70 % for a minimum of 16 h before testing.
The methods for measuring spectral transmittance are specified in ISO 18526-2:2020, Clause 6.
5.1.2 Effective ultraviolet transmittance
τ is calculated by Formula (1):
UV
400nm
τλ()⋅⋅Sd()λλ
∫
200nm
τ (%)=×100 (1)
UV
400nm
Sd()λλ⋅
∫
200nm
3
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oSIST prEN ISO 25980:2022
ISO/DIS 25980:2022(E)
where
τ(λ) is the spectral transmittance in the range 200 nm to 400 nm;
S(λ) is the spectral efficiency for UV radiation;
λ is the wavelength in nm.
5.1.3 Effective blue-light transmittance
τ is calculated by Formula (2):
B
700nm
τλ()⋅⋅Bd()λλ
∫
300nm
τ (%)=×100 (2)
B
700nm
Bd()λλ⋅
∫
300nm
where
τ(λ) is the spectral transmittance in the range 300 nm to 700 nm;
B(λ) is the blue-light hazard function;
λ is the wavelength in nm.
5.1.4 Luminou
...