oSIST prEN ISO 25980:2022

Health and safety in welding and allied processes - Transparent welding curtains, strips and screens for arc welding processes (ISO/DIS 25980:2022)

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/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)

Varnost in zdravje pri varjenju in sorodnih postopkih - Prosojne zavese, trakovi in zasloni pri postopkih obločnega varjenja (ISO/DIS 25980:2022)

General Information

• Status: Not Published
• Public Enquiry End Date: 01-Oct-2022
• 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: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 27-Jul-2022
• Due Date: 14-Dec-2022
• Completion Date: 28-Oct-2022
• Ref Project: prEN ISO 25980 - Health and safety in welding and allied processes - Transparent welding curtains, strips and screens for arc welding processes (ISO/DIS 25980:2022)

Relations

• Revised: 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-Sep-2022

Standards Content (Sample)

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
© 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
© ISO 2022 – All rights reserved
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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.

© ISO 2022 – All rights reserved
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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

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).
© ISO 2022 – All rights reserved
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oSIST prEN ISO 25980:2022
ISO/DIS 25980:2022(E)
3.3
effective blue-light transmittance

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

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

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

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.

Extra dark is normally intended for separation of adjacent operations.
© ISO 2022 – All rights reserved
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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
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.

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):
400nm
τλ()⋅⋅Sd()λλ
200nm
τ (%)=×100 (1)
400nm
Sd()λλ⋅
200nm
© ISO 2022 – All rights reserved
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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):
700nm
τλ()⋅⋅Bd()λλ
300nm
τ (%)=×100 (2)
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
...