Woodworking machines - Safety - Part 8: Belt sanding and calibrating machines for straight workpieces (ISO 19085-8:2017)

ISO 19085-8:2017 gives the safety requirements and measures for stationary calibrating and sanding machines, with an integrated feed and one or more sanding belt units positioned above and/or below the work piece level, with manual or automatic loading and/or unloading, hereinafter referred to as "machines".
ISO 19085-8:2017 deals with all significant hazards, hazardous situations and events as listed in Clause 4, relevant to the machines, when operated, adjusted and maintained as intended and under the conditions foreseen by the manufacturer, including reasonably foreseeable misuse. Also, transport, assembly, dismantling, disabling and scrapping phases have been taken into account.
NOTE 1    For relevant but not significant hazards, e.g. sharp edges of the machine frame, see ISO 12100:2010.
ISO 19085-8:2017 is also applicable to machines fitted with one or more of the following devices/additional working units, whose hazards have been dealt with:
-      transversal sanding unit;
-      cleaning brushing unit;
-      satining roller unit;
-      disk brushing unit;
-      texturing brushing roller unit;
-      texturing brushing belt unit;
-      cutterblock unit;
-      texturing band saw unit;
-      spiked roller unit;
-      antistatic bars;
-      conveyor directly controlled by the machine;
-      additional work piece vacuum clamping device.
The machines are designed to calibrate and/or sand work pieces, in shape of panels or beams, consisting of:
a)    solid wood;
b)    material with similar physical characteristics to wood (see ISO 19085-1:2017, 3.2);
c)    gypsum boards, gypsum bounded fibreboards;
d)    composite materials with core consisting of e.g. polyurethane or mineral material;
e)    composite boards made from the materials listed above;
f)     all materials listed above, also already lacquered.
ISO 19085-8:2017 does not deal with hazards related to:
-      specific devices other than those listed above;
-      access through in-feed and out-feed openings of machines with a work piece height capacity greater than 550 mm;
-      systems for automatic loading and/or unloading of the work piece to/from a single machine;
NOTE 2    Loading the machine manually includes manually placing the work piece onto a conveyor directly controlled by the machine. Unloading the machine manually includes manually removing the work piece from a conveyor directly controlled by the machine.
-      interfacing of the machine with any other machine.
ISO 19085-8:2017 is not applicable to machines intended for use in potentially explosive atmosphere and to machines manufactured prior to the date of its publication.

Holzbearbeitungsmaschinen - Sicherheit - Teil 8: Bandschleifmaschinen zum Kalibrieren und Schleifen von geraden Werkstücken (ISO 19085-8:2017)

Machines à bois - Sécurité - Partie 8: Machines de ponçage et de calibrage à bande pour pièces droites (ISO 19085-8:2017)

ISO 19085-8:2017 donne les exigences et les mesures de sécurité pour les machines de calibrage et de ponçage fixes, à avance intégrée et munies d'une ou plusieurs unités de ponçage à bande positionnées au-dessus et/ou au-dessous du niveau de la pièce, à chargement et/ou déchargement manuel ou automatique, ci-après désignées «machines».
ISO 19085-8:2017 traite de tous les phénomènes dangereux, situations et événements dangereux significatifs, tels qu'énumérés à l'Article 4, applicables aux machines lorsqu'elles sont utilisées, réglées et entretenues comme prévu et dans les conditions prévues par le fabricant, incluant une mauvaise utilisation raisonnablement prévisible. Les phases de transport, d'assemblage, de démontage, de mise hors service et de mise au rebut ont également été prises en compte.
NOTE 1    Pour les phénomènes dangereux pertinents mais non significatifs, par exemple, les arêtes vives du bâti de la machine, voir l'ISO 12100:2010.
ISO 19085-8:2017 est également applicable aux machines équipées d'un ou plusieurs des dispositifs/unités de travail supplémentaires suivants, dont les phénomènes dangereux ont été traités:
-      unité de ponçage transversale;
-      unité de nettoyage par brossage;
-      unité de satinage à rouleau;
-      unité de brossage à disques;
-      unité à texturer à rouleau de brossage;
-      unité à texturer à bande de brossage;
-      unité porte-outil;
-      unité à texturer à scie à ruban;
-      unité de rouleau à pointes;
-      barres antistatiques;
-      convoyeur directement commandé par la machine;
-      dispositif de bridage supplémentaire de la pièce par dépression.
Les machines sont conçues pour calibrer et/ou pour poncer des pièces, sous la forme de panneaux ou de faisceaux constitués de:
a)    bois massif;
b)    matériau présentant des caractéristiques physiques similaires à celles du bois (voir l'ISO 19085‑1:2017, 3.2);
c)    panneaux en plâtre, panneaux en fibres agglomérées au plâtre;
d)    matériaux composites dont la base est constituée, par exemple, de polyuréthane ou d'un matériau minéral;
e)    panneaux en composite fabriqués à partir des matériaux énumérés ci-dessus;
f)     tous les matériaux énumérés ci-dessus, également déjà laqués.
ISO 19085-8:2017 ne traite pas des phénomènes dangereux relatifs à:
-      des dispositifs spécifiques autres que ceux énumérés ci-dessus;
-      l'accès par les ouvertures d'entrée et de sortie des machines ayant une capacité de hauteur de pièce supérieure à 550 mm;
-      des systèmes pour le chargement et/ou déchargement automatique de la pièce d'une machine individuelle;
NOTE 2    Le chargement manuel de la machine comprend la mise en place manuelle de la pièce sur un convoyeur directement commandé par la machine. Le déchargement manuel de la machine comprend le retrait manuel de la pièce d'un convoyeur directement commandé par la machine.
?   interface entre la machine et une autre machine.
ISO 19085-8:2017 n'est pas applicable aux machines prévues pour une utilisation en atmosphère explosible, ni aux machines fabriquées avant sa date de publication.

Lesnoobdelovalni stroji - Varnost - 8. del: Širokotrakovni brusilni stroji za kalibriranje in brušenje (ISO 19085-8:2017)

Ta dokument obravnava vsa pomembna tveganja, nevarne okoliščine in dogodke, kot so navedeni v točki 4, v zvezi s stroji za kalibriranje in/ali brušenje plošč in/ali ravnih obdelovancev iz masivnega lesa in materialov, ki imajo podobne fizične lastnosti kot les, mavčnih plošč in vlaknatih plošč, vezanih z mavcem, ki so opremljeni z vgrajenimi podajalnimi in brusilnimi trakovi, postavljenimi nad in/ali pod raven obdelovanca, in ki delujejo v smeri podajanja (v nadaljevanju »stroji«), kadar se uporabljajo, prilagajajo ter vzdržujejo skladno s namenom in pod pogoji, ki jih je predvidel proizvajalec, vključno z razumno predvideno nepravilno uporabo. Podajanje in/ali odvzem potekata ročno ali samodejno. Upoštevane so tudi faze transporta, sestavljanja, razstavljanja, onemogočanja in razrezovanja.

General Information

Status
Withdrawn
Publication Date
30-May-2018
Withdrawal Date
30-Aug-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
07-Feb-2018
Completion Date
07-Feb-2018

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SLOVENSKI STANDARD
SIST EN ISO 19085-8:2018
01-junij-2018
Lesnoobdelovalni stroji - Varnost - 8. del: Širokotrakovni brusilni stroji za
kalibriranje in brušenje (ISO 19085-8:2017)

Woodworking machines - Safety - Part 8: Belt sanding and calibrating machines for

straight workpieces (ISO 19085-8:2017)
Holzbearbeitungsmaschinen - Sicherheit - Teil 8: Breitbandschleifmaschinen zum
Kalibrieren und Schleifen (ISO 19085-8:2017)

Machines à bois - Sécurité - Partie 8: Machines de ponçage et de calibrage à bande

pour pièces droites (ISO 19085-8:2017)
Ta slovenski standard je istoveten z: EN ISO 19085-8:2018
ICS:
13.110 Varnost strojev Safety of machinery
79.120.10 Lesnoobdelovalni stroji Woodworking machines
SIST EN ISO 19085-8:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 19085-8:2018
---------------------- Page: 2 ----------------------
SIST EN ISO 19085-8:2018
EN ISO 19085-8
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 79.120.10
English Version
Woodworking machines - Safety - Part 8: Belt sanding and
calibrating machines for straight workpieces (ISO 19085-
8:2017)

Machines à bois - Sécurité - Partie 8: Machines de Holzbearbeitungsmaschinen - Sicherheit - Teil 8:

ponçage et de calibrage à bande pour pièces droites Breitbandschleifmaschinen zum Kalibrieren und

(ISO 19085-8:2017) Schleifen (ISO 19085-8:2017)
This European Standard was approved by CEN on 21 November 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19085-8:2018 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 19085-8:2018
EN ISO 19085-8:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of Directive 2006/42/EC ................................................................................................. 4

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SIST EN ISO 19085-8:2018
EN ISO 19085-8:2018 (E)
European foreword

This document (EN ISO 19085-8:2018) has been prepared by Technical Committee ISO/TC 39

“Woodworking machines” in collaboration with Technical Committee CEN/TC 142 “Woodworking

machines - Safety” the secretariat of which is held by UNI.

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 August 2018, and conflicting national standards shall

be withdrawn at the latest by August 2018.

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 has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU 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, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 19085-8:2017 has been approved by CEN as EN ISO 19085-8:2018 without any

modification.
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SIST EN ISO 19085-8:2018
EN ISO 19085-8:2018 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of Directive 2006/42/EC

This European Standard has been prepared under a Commission’s standardization request “M/396” to

provide one voluntary means of conforming to essential requirements of the new approach Machinery

Directive 2006/42/EC.

Once this standard is cited in the Official Journal of the European Union under that Directive,

compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of

the scope of this standard, a presumption of conformity with the corresponding essential requirements

of that Directive and associated EFTA regulations.

Table ZA.1 — Correspondence between this European Standard and Directive 2006/42/EC

Essential Requirements (ERs) of Directive Clauses/subclauses Remarks/
2006/42/EC of this EN Notes
1.1.2 Principles of safety integration
a) fitted for its function Clauses 5, 6, 7, 8
b) eliminate or reduce the risks, give measures, Clause 5, 6, 7, 8
inform
c) intended use and reasonably foreseeable misuse Clause 5, 6, 7, 8
d) constraints in use 7.5, 8.3
e) equipment 6.1, 8.3
1.1.3 Materials and products 6.2, 7.3
1.1.4 Lighting 8.3
1.1.5 Design of machinery to facilitate its handling 7.5
1.1.6 Ergonomics 7.5
1.1.7 Operating position 5.2
1.2.1 Safety and reliability of control systems 5.1, 5.6, 5.7, 5.8, 5.11,
5.12, 6.5, 6.6, 6.9.4, 7.7,
7.8
1.2.2 Control devices 5.2, 5.3, 5.4, 5.6, 5.7
1.2.3 Starting 5.3
1.2.4 Stopping 5.4, 5.5, 6.4
1.2.4.1 Normal stop 5.4.2
1.2.4.3 Emergency stop 5.4.4
1.2.5 Selection of control or operating mode 5.6
1.2.6 Failure of the power supply 5.8, 7.7, 7.8
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SIST EN ISO 19085-8:2018
EN ISO 19085-8:2018 (E)
Essential Requirements (ERs) of Directive Clauses/subclauses Remarks/
2006/42/EC of this EN Notes
1.3.1 Risk of loss of stability 6.1, 8.3
1.3.2 Risk of break-up during operation 6.2, 8.3
1.3.3 Risks due to falling or ejected objects 6.2, 6.3, 6.5, 6.8, 6.9, 8.3
Not significant, see
1.3.4 Risk due to surfaces, edges or angles
ISO 12100:2010
1.3.6 Risks relating to variations in the operating
5.7, 6.6
conditions
1.3.7 Risks related to moving parts 6.5, 6.6, 6.7, 8.3
1.3.8 Choice of protection against risks related to
6.6, 6.7, 6.8
moving parts
1.3.8.1 Moving transmission parts 6.6.3, 6.6.4, 6.7
1.3.8.2 Moving parts involved in the process 6.6.2
1.3.9 Risk of uncontrolled movements 6.1.1
1.4.1 General requirements 6.9
1.4.2.1 Fixed guards 6.5.1
1.4.2.2 Interlocking movable guards 6.5.2
1.4.3 Special requirements for protective devices 6.5.3, 6.5.6
1.5.1 Electricity supply 7.4, 7.13
1.5.2 Static electricity 7.11
1.5.3 Energy supply other than electricity 7.7, 7.8
1.5.4 Errors of fitting 7.12
1.5.6 Fire 7.1
1.5.8 Noise 7.2
1.5.11 External radiation 7.9
1.5.12 Laser equipment 7.10
1.5.13 Emission of hazardous materials and
7.3
substances
1.6.1 Machinery maintenance 7.14, 8.3
1.6.2 Access to operating position and servicing points 7.14, 8.3
1.6.3 Isolation of energy sources 7.13, 8.3
1.6.4 Operator intervention 7.14, 8.3
1.6.5 Cleaning of internal parts 7.14, 8.3
1.7.1 Information and warnings on the machinery 7.10, 8.1, 8.2
1.7.2 Warning devices 7.10, 8.1
1.7.3 Marking of machinery 8.2
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SIST EN ISO 19085-8:2018
EN ISO 19085-8:2018 (E)
Essential Requirements (ERs) of Directive Clauses/subclauses Remarks/
2006/42/EC of this EN Notes
1.7.4 Instructions 7.10, 8.3
2.3 Machinery for working wood and analogous
materials
a) guiding 6.10, 6.11
b) ejection 6.2, 6.3, 6.5, 6.6, 6.8, 6.9,
8.3
c) brake 5.5, 6.4
d) accidental tool contact 6.6.2, 8.3

WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European

standard is maintained in the list published in the Official Journal of the European Union. Users of this

standard should consult frequently the latest list published in the Official Journal of the European

Union.

WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of

this standard.
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SIST EN ISO 19085-8:2018
INTERNATIONAL ISO
STANDARD 19085-8
First edition
2017-11
Woodworking machines — Safety —
Part 8:
Belt sanding and calibrating machines
for straight workpieces
Machines à bois — Sécurité —
Partie 8: Machines de ponçage et de calibrage à bande pour pièces
droites
Reference number
ISO 19085-8:2017(E)
ISO 2017
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SIST EN ISO 19085-8:2018
ISO 19085-8:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 19085-8:2018
ISO 19085-8:2017(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 2

3 Terms and definitions ..................................................................................................................................................................................... 2

4 List of significant hazards ........................................................................................................................................................................... 7

5 Safety requirements and measures for controls ................................................................................................................. 9

5.1 Safety and reliability of control systems ........................................................................................................................... 9

5.2 Control devices ....................................................................................................................................................................................... 9

5.3 Start .................................................................................................................................................................................................................. 9

5.4 Safe stops ..................................................................................................................................................................................................10

5.4.1 General...................................................................................................................................................................................10

5.4.2 Normal stop .......................................................................................................................................................................10

5.4.3 Operational stop ............................................................................................................................................................10

5.4.4 Emergency stop .............................................................................................................................................................10

5.5 Braking function of tool spindles .........................................................................................................................................10

5.6 Mode selection .....................................................................................................................................................................................10

5.7 Spindle speed changing ................................................................................................................................................................10

5.7.1 Spindle speed changing by changing belts on the pulleys ........................................................10

5.7.2 Spindle speed changing by incremental speed change motor ..............................................11

5.7.3 Infinitely variable speed frequency inverter ........................................................................................11

5.8 Failure of any power supply .....................................................................................................................................................11

5.9 Manual reset control .......................................................................................................................................................................11

5.10 Enabling control ..................................................................................................................................................................................11

5.11 Machine moving parts speed monitoring .....................................................................................................................11

5.12 Time delay ................................................................................................................................................................................................11

6 Safety requirements and measures for protection against mechanical hazards ...........................12

6.1 Stability .......................................................................................................................................................................................................12

6.1.1 Stationary machines ..................................................................................................................................................12

6.1.2 Displaceable machines ............................................................................................................................................12

6.2 Risk of break-up during operation ......................................................................................................................................12

6.3 Tool holder and tool design.......................................................................................................................................................12

6.4 Braking ........................................................................................................................................................................................................12

6.4.1 Braking of tool spindles ..........................................................................................................................................12

6.4.2 Maximum run-down time .....................................................................................................................................12

6.4.3 Brake release ....................................................................................................................................................................12

6.5 Safeguards ................................................................................................................................................................................................12

6.5.1 Fixed guards ......................................................................................................................................................................12

6.5.2 Interlocking moveable guards ...........................................................................................................................13

6.5.3 Hold-to-run control ....................................................................................................................................................13

6.5.4 Two-hand control .........................................................................................................................................................13

6.5.5 Electro-sensitive protective equipment (ESPE) .................................................................................13

6.5.6 Pressure sensitive protecting device (PSPE) ........................................................................................13

6.6 Prevention of access to moving parts ...............................................................................................................................13

6.6.1 General...................................................................................................................................................................................13

6.6.2 Guarding of tools ...........................................................................................................................................................13

6.6.3 Guarding of drives .......................................................................................................................................................14

6.6.4 Guarding of shearing and/or crushing zones ......................................................................................14

6.7 Impact hazard .......................................................................................................................................................................................15

6.8 Clamping devices ...............................................................................................................................................................................15

6.9 Measures against ejection ..........................................................................................................................................................15

6.9.1 General...................................................................................................................................................................................15

© ISO 2017 – All rights reserved iii
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SIST EN ISO 19085-8:2018
ISO 19085-8:2017(E)

6.9.2 Guards material and characteristics ............................................................................................................15

6.9.3 Anti-kickback devices ...............................................................................................................................................16

6.9.4 Adjustment of machine work height ...........................................................................................................17

6.10 Work piece support and guides .............................................................................................................................................17

7 Safety requirements and measures for protection against other hazards ...........................................18

7.1 Fire ......... .........................................................................................................................................................................................................18

7.2 Noise .............................................................................................................................................................................................................18

7.2.1 Noise reduction at the design stage .............................................................................................................18

7.2.2 Noise emission measurement ...........................................................................................................................19

7.3 Emission of chips and dust ........................................................................................................................................................19

7.4 Electricity ..................................................................................................................................................................................................19

7.4.1 General...................................................................................................................................................................................19

7.4.2 Displaceable machines ............................................................................................................................................19

7.5 Ergonomics and handling ...........................................................................................................................................................19

7.6 Lighting .......................................................................................................................................................................................................19

7.7 Pneumatics ..............................................................................................................................................................................................19

7.8 Hydraulics ................................................................................................................................................................................................19

7.9 Electromagnetic compatibility ...............................................................................................................................................20

7.10 Laser ..............................................................................................................................................................................................................20

7.11 Static electricity ...................................................................................................................................................................................20

7.12 Errors of fitting ....................................................................................................................................................................................20

7.13 Isolation .....................................................................................................................................................................................................20

7.14 Maintenance ...........................................................................................................................................................................................20

8 Information for use .........................................................................................................................................................................................20

8.1 Warning devices ..................................................................................................................................................................................20

8.2 Markings ....................................................................................................................................................................................................20

8.2.1 General...................................................................................................................................................................................20

8.2.2 Additional markings ..................................................................................................................................................20

8.3 Instruction handbook ....................................................................................................................................................................20

8.3.1 General...................................................................................................................................................................................20

8.3.2 Additional information ............................................................................................................................................21

Annex A (informative) Performance level required ..........................................................................................................................22

Annex B (normative) Test for braking function .....................................................................................................................................23

Annex C (normative) Stability test for displaceable machines ..............................................................................................24

Annex D (normative) Impact test for guards ............................................................................................................................................25

Annex E (normative) Noise emission measurement for machines not in ISO 7960:1995 .........................26

Annex F (normative) Anti-kickback test ........................................................................................................................................................27

Annex G (normative) Test for anti-kickback devices of finger type ..................................................................................28

Bibliography .............................................................................................................................................................................................................................29

iv © ISO 2017 – All rights reserved
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SIST EN ISO 19085-8:2018
ISO 19085-8:2017(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 on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformi
...

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