SIST ISO/PWI 8995-1:2019

Lighting of work places -- Part 1: Indoor

This standard specifies lighting requirements for humans in indoor work places, which meet the needs for visual comfort, performance and safety of people having normal, or corrected to normal ophthalmic (visual) capacity and response to light. This standard specifies requirements for lighting solutions for most indoor work places and their associated areas in terms of quantity and quality of illumination. The illumination can be provided by daylight, electric light or a combination of both. Recommendations are given for good lighting to fulfil the needs of integrative lighting. This standard neither provides specific solutions nor recommendations for atmosphere or aesthetics created by lighting. It does not restrict the designers' freedom from exploring new techniques nor restrict the use of innovative equipment.

Éclairage des lieux de travail -- Partie 1: Intérieur

Razsvetljava delovnega mesta - 1.del: Notranji prostori

General Information

• Status: Not Published
• ICS: 13.180 - Ergonomics
• ICS: 91.160.10 - Interior lighting
• Technical Committee: STV - Steklo, svetloba in razsvetljava v gradbeništvu
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 03-Jun-2019
• Due Date: 21-Oct-2019
• Completion Date: 06-May-2020
• Ref Project: ISO/CIE FDIS 8995-1 - Light and lighting — Lighting of work places — Part 1: Indoor

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/CIE FDIS
8995-1
ISO/TC 274
Light and lighting — Lighting of
Secretariat: DIN
work places —
Voting begins on:
2024-10-29
Part 1:
Indoor
Voting terminates on:
2024-12-24
Lumière et éclairage — Éclairage des lieux de travail —
Partie 1: Intérieur
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/CIE FDIS 8995­1:2024(en) © ISO/CIE 2024

FINAL DRAFT
International
Standard
ISO/CIE FDIS
8995-1
ISO/TC 274
Light and lighting — Lighting of
Secretariat: DIN
work places —
Voting begins on:
Part 1:
Indoor
Voting terminates on:
Lumière et éclairage — Éclairage des lieux de travail —
Partie 1: Intérieur
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
© ISO/CIE 2024
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
IN ADDITION TO THEIR EVALUATION AS
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
or ISO’s member body in the country of the requester
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
ISO copyright office CIE Central Bureau TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
CP 401 • Ch. de Blandonnet 8 Babenbergerstraße 9/9A • A-1010 Vienna
CH-1214 Vernier, Geneva
Phone: [phone] Phone: [phone]
Fax: [phone]
Email: [e-mail] Email: [e-mail]
Website: www.iso.org Website: www.cie.co.at
Published in Switzerland Reference number
ISO/CIE FDIS 8995­1:2024(en) © ISO/CIE 2024

© ISO/CIE 2024 – All rights reserved
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviations . 2
5 Lighting design criteria . 3
5.1 General .3
5.2 Luminance distribution .4
5.2.1 General .4
5.2.2 Average luminance of surfaces .4
5.2.3 Reflectance of surfaces .5
5.2.4 Illuminance on surfaces .6
5.3 Illuminance .6
5.3.1 General .6
5.3.2 Scale of illuminance .6
5.3.3 Illuminances on the task area or activity area .6
5.3.4 Illuminance on the immediate surrounding area .8
5.3.5 Illuminance on the background area .8
5.3.6 Illuminance uniformity .9
5.4 ipRGC-influenced responses to light – Melanopic Equivalent Daylight Illuminance .9
5.5 Illuminance grid .10
5.6 Glare . 12
5.6.1 General . 12
5.6.2 Limiting luminaire luminance . 13
5.6.3 Discomfort glare .14
5.6.4 Veiling reflections and reflected glare .16
5.7 Visual appearance of objects and people within the interior space .16
5.7.1 General .16
5.7.2 Shadows .16
5.7.3 Cylindrical illuminance requirement in the activity space .16
5.7.4 Directional lighting of visual tasks areas .16
5.7.5 Modelling .16
5.8 Colour aspects .17
5.8.1 General .17
5.8.2 Colour appearance of the light source .17
5.8.3 Colour rendering .17
5.9 Temporal light modulation (TLM) .18
5.10 Lighting of work stations with Display Screen Equipment (DSE) .18
5.10.1 General .18
5.10.2 Luminaire luminance limits with downward flux .19
6 Lighting design considerations . 19
6.1 General .19
6.2 Illuminance requirements and recommendations . 20
6.2.1 General . 20
6.2.2 Lighting of the task area or activity area and its immediate surrounding area . 20
6.2.3 Lighting of the space . 20
6.2.4 Variability and adjustability of Light .21
6.3 Maintenance factor . 22
6.4 Energy performance . 23
6.5 Daylight . 23
6.6 Room brightness .24

© ISO/CIE 2024 – All rights reserved
iii
7 Schedule of specific lighting requirements .24
7.1 Composition of the tables .24
7.2 Schedule of task areas and activity areas . 25
7.3 Lighting requirements for task areas, activity areas, room and space brightness .27
8 Verification procedures .88
8.1 General . 88
8.2 Illuminances . 88
8.3 Unified glare rating . 88
8.4 Colour rendering and colour appearance . 88
8.5 Luminaire luminance. 88
8.6 Maintenance schedule .
...

ISO/CIE DIS FDIS 8995-1:2024(E)
ISO/TC 274
Secretariat: DIN
ISO/TC 274/JWG 5
Date: 2024-08-2910-15
Light and lighting — Lighting of work places — —
Part 1:
Indoor
Lumière et éclairage — Éclairage des lieux de travail —
Partie 1: Intérieur
FDIS stage
ISO/CIE DISFDIS 8995-1:2023(E2024(en)
© ISO/CIE 20232024
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: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO/CIE 2023 – All rights reserved
© ISO/CIE 2024 – All rights reserved
ii
ISO/CIE DISFDIS 8995-1:2023(E2024(en)
Contents
Foreword . vi
Introduction . vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviations . 2
5 Lighting design criteria . 3
6 Lighting design considerations . 24
7 Schedule of specific lighting requirements . 29
8 Verification procedures . 72
Annex A (informative) Recommended practice regarding implementation of UGR tabular
method for ‘non-standard’ situations . 74
Annex B (informative) Additional information on visual and non-visual effects of ocular light
exposure . 76
Annex C (informative) Lighting design considerations – Examples . 85
Annex D (informative) Commissioning . 93
Bibliography . 94

Foreword . vi
Introduction . vii
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
4 Symbols and abbreviations . 10
5 Lighting design criteria . 11
5.1 General . 11
5.2 Luminance distribution . 12
5.2.1 General . 12
5.2.2 Average luminance of surfaces . 12
5.2.3 Reflectance of surfaces . 13
5.2.4 llluminance of surfaces . 13
5.3 Illuminance . 13
5.3.1 General . 13
5.3.2 Scale of illuminance . 13
5.3.3 Illuminances on the task area or activity area . 14
5.3.4 Illuminance on the immediate surrounding area . 15
5.3.5 Illuminance on the background area . 16
5.3.6 Illuminance uniformity . 17
5.4 ipRGC-influenced responses to light – Melanopic Equivalent Daylight Illuminance . 17
© ISO/CIE 2023 – All rights reserved iii
© ISO/CIE 2024 – All rights reserved
iii
ISO/CIE DISFDIS 8995-1:2023(E2024(en)
5.5 Illuminance grid . 18
5.6 Glare . 20
5.6.1 General . 20
5.6.2 Limiting luminaire luminance . 21
5.6.3 Discomfort glare . 22
5.6.4 Veiling reflections and reflected glare. 23
5.7 Visual appearance of objects and people within the interior space . 24
5.7.1 General . 24
5.7.2 Shadows . 24
5.7.3 Cylindrical illuminance requirement in the activity space . 24
5.7.4 Directional lighting of visual tasks areas . 24
5.7.5 Modelling . 24
5.8 Colour aspects . 24
5.8.1 General . 24
5.8.2 Colour appearance of the light source . 25
5.8.3 Colour rendering . 25
5.9 Temporal light modulation (TLM) . 26
5.10 Lighting of work stations with Display Screen Equipment (DSE) . 26
5.10.1 General . 26
5.10.2 Luminaire luminance limits with downward flux . 26
6 Lighting design considerations . 27
6.1 General . 27
6.2 Illuminance requirements and recommendations . 28
6.2.1 General . 28
6.2.2 Lighting of the task area or activity area and its immediate surrounding area (see 5.3) . 28
6.2.3 Lighting of the space . 28
6.2.4 Variability and adjustability of Light . 29
6.3 Maintenance factor . 30
6.4 Energy performance . 31
6.5 Daylight . 31
6.6 Room brightness . 32
7 Schedule of specific lighting requirements . 32
7.1 Composition of the tables . 32
7.2 Schedule of task and activity areas . 33
7.3 Lighting requirements for task areas, activity areas, room and space brightness . 37
8 Verification procedures . 85
8.1 General . 85
8.2 Illuminances . 85
8.3 Unified Glare Rating . 85
8.4 Colour rendering and colour appearance . 85
8.5 Luminaire luminance . 85
8.6 Maintenance schedule . 85
8.7 Tolerances in measurements . 85
8.8 System tests . 86
Annex A (informative) Recommended practice regarding implementation of UGR tabular
method for ‘non-standard’ situations . 87
A.1 General . 87
A.2 Recommended Practices . 87
A.2.1 Deviating luminaire sizes . 87
iv © ISO/CIE 2023 – All rights reserved
© ISO/CIE 2024 – All rights reserved
iv
ISO/CIE DISFDIS 8995-1:2023(E2024(en)
A.2.2 Irregular area shapes . 87
A.2.3 Irregular luminaire placement patterns.
...