ISO 4254-1:2013/FDAmd 1.2
(Amendment)ISO 4254-1:2013/FDAmd 1.2
ISO 4254-1:2013/FDAmd 1.2
General Information
RELATIONS
Buy Standard
Standards Content (sample)
FINAL
ISO
AMENDMENT
DRAFT
4254-1.2:2013
FDAM 1
ISO/TC 23/SC 3
Agricultural machinery — Safety —
Secretariat: DIN
Voting begins on:
Part 1:
2021-01-28
General requirements
Voting terminates on:
2021-03-25
AMENDMENT 1
Matériel agricole — Sécurité —
Partie 1: Exigences générales
AMENDEMENT 1
ISO/CEN PARALLEL PROCESSING
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
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO 4254-1.2:2013/FDAM 1:2021(E)
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. ISO 2021
---------------------- Page: 1 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(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 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 3, Safety and comfort, in collaboration with CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).A list of all parts in the ISO 4254 series can be found on the ISO website.
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.© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Scope
Add a bullet and NOTE to the third paragraph:
— machine-specific performance levels (PL or AgPL).
NOTE Machine-specific standards can give the required PL or AgPL.
Normative references
Update the reference to ISO 3600 by replacing "1996" with "2015".
Update the reference to ISO 13849-1 by replacing "2006" with "2015".
Update the reference to ISO 13850 by replacing "2006" with "2015".
Add the following reference:
ISO 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns —
Test methods and performance criteria3.3
Modify 3.3 to read:
3.3
three-point contact
system which permits a person to simultaneously use two hands and a foot or two feet and one hand to
keep contact with the machine4.7.1.2
Modify 4.7.1.2.1 to read:
4.7.1.2.1 The height of the first step shall not exceed 550 mm when measured with the specified tyres
and with the maximum diameter at specified inflation pressure [see 8.2.3 w)]. The vertical distance
between successive steps shall be equal within a tolerance of ± 20 mm. Each step shall have a slip-
resistant surface, a lateral stop at each end and be so designed (for example mudguards, perforated
steps) that an accumulation of mud and/or snow is minimized under normal work conditions.
A flexible connection(s) between the first and second steps is permitted.© ISO 2021 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Figure 3
Add a new key "E" to Figure 3.
Add "E Height of first step" to the key table.
Table 1
Add the dimension of 550 mm for both ladders and steps to Table 1.
4.8
Replace 4.8.2.1 with the following:
4.8.2.1 A place provided for standing shall have sufficient space for both of the operator’s feet with
a minimum of 300 mm width, be flat and have a slip-resistant surface. Depending on the machine
configuration, it may consist of two separate surfaces and may use machine components. In case of
separate surfaces, each surface shall be a minimum of 150 mm width and on the same height level with
a tolerance of ±50 mm. It shall be positioned so the operator can maintain stability while carrying out
the service required.Add a new subclause:
4.8.4 Walkways
Walkways shall be a minimum of 300 mm width. It is allowable for the width to reduce to 250 mm
for short distances (e.g. for one step length) to accommodate handrail support members or machine
components. The operator shall be able to safely pass along the full length of the walkway.
4.19Modify the last para by deleting the year of publication that ISO 13850 becomes an undated reference.
Modify the NOTE to read:NOTE Requirements for wireless remote control devices that require emergency stop devices of
ISO 13850:2015 can be given in relevant machine-specific standards.4.20
Replace 4.20 with the following:
Safety-related parts of control systems shall be in accordance with ISO 25119-1 to ISO 25119-4 or
ISO 13849-1 and ISO 13849-2.NOTE Annex E provides guidance for risk assessment and determination of performance levels.
2 © ISO 2021 – All rights reserved---------------------- Page: 5 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
5.1.8.1
Modify 5.1.8.1 to read:
5.1.8.1 To avoid unauthorized activation of the engine starting, means such as the following shall be
provided:— key-operated ignition or starting switch;
— lockable cab;
— lockable cover for the ignition or starting switch;
— security ignition or starting lock;
— lockable battery disconnecting switch.
Information to avoid unauthorized starting shall be provided in the operator’s manual [see 8.2.3 f)].
6.4Add the following NOTE at the end of 6.4.1:
NOTE It is intended to move the specifications of 6.4.1 into another standard in the future (for example
ISO 5673-1).8.2
Modify 8.2.3 b) to read
b) compatibility with the tractor’s, for example hitching system, PTO drive shaft, vertical load
at hitching point, engine power, stability (see 6.3.1, 6.3.2, 6.4.1), including instructions when
replacement of the drive shaft and/or PIC guard are needed these should be clear, concise, and
maintain the safety level of the elements that are replaced. When applicable, the information shall
include:— type of connections on the PTO side;
— type of connections on the PIC side;
— maximum allowed diameter of the guards for compatibility with the PIC guard;
— type of allowed locking system(s);
— type and setting of overload protection device;
— power and speed to be transmitted;
— PTO drive shaft length and procedure to adapt the length.
Add the following to 8.2.3:
z) information on the use of the PTO-drive-shaft for PTO-driven equipment, such as:
— information about the interaction between PTO-drive-shaft guarding and PIC guard;
— information, if necessary, on how to attach the restraining system;© ISO 2021 – All rights reserved 3
---------------------- Page: 6 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
— the need to and how to use a support for the PTO drive shaft when it is not in use, that is
different from the restraining system and which does not cause such damage to the guard that
the telescoping of the inner and outer tubes is prevented.Annex E
Add a new Annex E:
ANNEX E
(informative)
Guidance for risk assessment and determination of performance levels for safety-related parts
of control systemsE.1 Risk assessment was used to determine the requirements of ISO 4254-1 and the requirements of
associated machine specific type-C standards. This annex provides some basic guidance for the use of
risk assessment when determining requirements either of related machine specific standards or for
hazards not covered by those documents, includ...
FINAL
ISO
AMENDMENT
DRAFT
4254-1.2:2013
FDAM 1
ISO/TC 23/SC 3
Agricultural machinery — Safety —
Secretariat: DIN
Voting begins on:
Part 1:
2021-04-12
General requirements
Voting terminates on:
2021-06-07
AMENDMENT 1
Matériel agricole — Sécurité —
Partie 1: Exigences générales
AMENDEMENT 1
ISO/CEN PARALLEL PROCESSING
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
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO 4254-1.2:2013/FDAM 1:2021(E)
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. ISO 2021
---------------------- Page: 1 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(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 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 3, Safety and comfort, in collaboration with CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).A list of all parts in the ISO 4254 series can be found on the ISO website.
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.© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Scope
Add a bullet and NOTE to the third paragraph:
— machine-specific performance levels (PL or AgPL).
NOTE Machine-specific standards can give the required PL or AgPL.
Normative references
Update the reference to ISO 3600 by replacing "1996" with "2015".
Update the reference to ISO 13849-1 by replacing "2006" with "2015".
Update the reference to ISO 13850 by replacing "2006" with "2015".
Add the following reference:
ISO 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns —
Test methods and performance criteria3.3
Modify 3.3 to read:
3.3
three-point contact
system which permits a person to simultaneously use two hands and a foot or two feet and one hand to
keep contact with the machine4.7.1.2
Modify 4.7.1.2.1 to read:
4.7.1.2.1 The height of the first step shall not exceed 550 mm when measured with the specified tyres
and with the maximum diameter at specified inflation pressure [see 8.2.3 w)]. The vertical distance
between successive steps shall be equal within a tolerance of ± 20 mm. Each step shall have a slip-
resistant surface, a lateral stop at each end and be so designed (for example mudguards, perforated
steps) that an accumulation of mud and/or snow is minimized under normal work conditions.
A flexible connection(s) between the first and second steps is permitted.© ISO 2021 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Figure 3
Replace Figure 3 with the following:
Key
A toe clearance
B vertical distance between tread surface of successive steps
C minimum clearance between successive steps
D tread depth
E height of the first step
G horizontal distance between leading edge of successive steps
W width of step or rung
α angle of inclination
Figure 3 — Dimensions of boarding means for operator stations
Table 1
Replace Table 1 with the following:
Table 1 — Dimensions for boarding means for operator stations
Dimensions in millimetres
Ladders Steps
α 70° to 90° 20° to 70°
A + D min 150 150
B max 300 300
C min 120 120
D min 50 150
E max 550 550
2B + G max — 800
W min 300 300
2 © ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
4.8
Replace 4.8.2.1 with the following:
4.8.2.1 A place provided for standing shall have sufficient space for both of the operator’s feet with
a minimum of 300 mm width, be flat and have a slip-resistant surface. Depending on the machine
configuration, it may consist of two separate surfaces and may use machine components. In case of
separate surfaces, each surface shall be a minimum of 150 mm width and on the same height level with
a tolerance of ±50 mm. It shall be positioned so the operator can maintain stability while carrying out
the service required.Add a new subclause:
4.8.4 Walkways
Walkways shall be a minimum of 300 mm width. It is allowable for the width to reduce to 250 mm
for short distances (e.g. for one step length) to accommodate handrail support members or machine
components. The operator shall be able to safely pass along the full length of the walkway.
4.19Modify the last para by deleting the year of publication so that ISO 13850 becomes an undated reference.
Modify the NOTE to read:NOTE Requirements for wireless remote control devices that require emergency stop devices of
ISO 13850:2015 can be given in relevant machine-specific standards.4.20
Replace 4.20 with the following:
Safety-related parts of control systems shall be in accordance with ISO 25119-1 to ISO 25119-4 or
ISO 13849-1 and ISO 13849-2.NOTE Annex E provides guidance for risk assessment and determination of performance levels.
© ISO 2021 – All rights reserved 3---------------------- Page: 6 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
5.1.8.1
Modify 5.1.8.1 to read:
5.1.8.1 To avoid unauthorized activation of the engine starting, means such as the following shall be
provided:— key-operated ignition or starting switch;
— lockable cab;
— lockable cover for the ignition or starting switch;
— security ignition or starting lock;
— lockable battery disconnecting switch.
Information to avoid unauthorized starting shall be provided in the operator’s manual [see 8.2.3 f)].
6.4Add the following NOTE at the end of 6.4.1:
NOTE It is intended to move the specifications of 6.4.1 into another standard in the future (for example
ISO 5673-1).8.2
Modify 8.2.3 b) to read
b) compatibility with the tractor’s, for example hitching system, PTO drive shaft, vertical load
at hitching point, engine power, stability (see 6.3.1, 6.3.2, 6.4.1), including instructions when
replacement of the drive shaft and/or PIC guard are needed these should be clear, concise, and
maintain the safety level of the elements that are replaced. When applicable, the information shall
include:— type of connections on the PTO side;
— type of connections on the PIC side;
— maximum allowed diameter of the guards for compatibility with the PIC guard;
— type of allowed locking system(s);
— type and setting of overload protection device;
— power and speed to be transmitted;
— PTO drive shaft length and procedure to adapt the length.
Add the following to 8.2.3:
z) information on the use of the PTO-drive-shaft for PTO-driven equipment, such as:
— information about the interaction between PTO-drive-shaft guarding and PIC guard;
— information, if necessary, on how to attach the restraining system;4 © ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
— the need to and how to use a support for the PTO drive shaft when it is not in use, that is
different from the restraining system and which does not cause such damage to the guard that
the telescoping of the inner and outer tubes is prevented.Annex E
Add a new Annex E:
ANNEX E
(informative)
Guidance for risk assessment and determination of performance levels for safety-related parts
of control systemsE.1 Risk assessment was used to determine the requirements of
...
FINAL
ISO
AMENDMENT
DRAFT
4254-1:2013
FDAM 1
ISO/TC 23/SC 3
Agricultural machinery — Safety —
Secretariat: DIN
Voting begins on:
Part 1:
2020-03-04
General requirements
Voting terminates on:
2020-04-29
AMENDMENT 1
Matériel agricole — Sécurité —
Partie 1: Exigences générales
AMENDEMENT 1
ISO/CEN PARALLEL PROCESSING
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
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO 4254-1:2013/FDAM 1:2020(E)
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. ISO 2020
---------------------- Page: 1 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4254-1:2013/FDAM 1:2020(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 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 3, Safety and comfort, in collaboration with CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).A list of all parts in the ISO 4254 series can be found on the ISO website.
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.© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Scope
Add a bullet and NOTE to the third paragraph:
— machine-specific performance levels (PL or AgPL).
NOTE Machine-specific standards can give the required PL or AgPL.
Normative references
Update the reference to ISO 3600 by deleting the year of edition.
Add the following reference:
ISO 9533, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns — Test
methods and performance criteria3.3
Modify 3.3 to read:
3.3
three-point contact
system which permits a person to simultaneously use two hands and a foot or two feet and one hand to
keep contact with the machine4.7.1.2
Modify 4.7.1.2.1 to read:
4.7.1.2.1 The height of the first step shall not exceed 550 mm when measured with the specified tyres
and with the maximum diameter at specified inflation pressure [see 8.2.3 w)]. The vertical distance
between successive steps shall be equal within a tolerance of ± 20 mm. Each step shall have a slip-
resistant surface, a lateral stop at each end and be so designed (for example mudguards, perforated
steps) that an accumulation of mud and/or snow is minimized under normal work conditions.
A flexible connection(s) between the first and second steps is permitted.© ISO 2020 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
Figure 3
Add a new key "E" to Figure 3.
Add "E Height of first step" to the key table.
Table 1
Add the dimension of 550 mm for both ladders and steps to Table 1.
4.8
Replace 4.8.2 with the following:
4.8.2 Place to stand
4.8.2.1 A place provided for standing shall be a minimum of 300 mm width, be flat and have a slip-
resistant surface. Depending on the machine configuration, it may consist of two separate surfaces and
may use machine components. In case of separate surfaces, each surface shall be a minimum of 150 mm
width and on the same height level with a tolerance of ± 50 mm. It shall be positioned so the operator
can maintain stability while carrying out the service required.4.8.2.2 Handhold(s) and/or railings shall be provided in order to allow three-point contact. Parts of
the machine can be considered to fulfil this requirement.4.8.2.3 When access is needed above or next to the PTO (power take-off) drive shaft, an adequate
place to stand and boarding means shall be provided in order to eliminate the need to use the PTO drive
shaft or its guard as a step or a place to stand.Add a new subclause:
4.8.4 Walkways
Walkways shall be a minimum of 300 mm width. It is allowable for the width to reduce to 250 mm
for short distances to accommodate handrail support members or machine components if it does not
create additional hazards.4.19
Modify the NOTE to read:
NOTE ISO 13850:2006 is not applicable to wireless emergency stop devices. Requirements for wireless
remote control devices that require emergency stop devices of ISO 13850:2015 can be given in relevant machine-
specific standards.2 © ISO 2020 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
4.20
Replace 4.20 with the following:
Safety-related parts of control systems shall be in accordance with ISO 25119-1 to ISO 25119-4 or
ISO 13849-1 and ISO 13849-2.NOTE Annex E provides guidance for risk assessment and determination of performance levels.
5.1.7Replace 5.1.7.1 with the following:
5.1.7.1 The design and position of the operator's station shall be such that the operator has adequate
visibility direct or indirect to operate the machine and view the work area of the machine.
If during driving operation direct visibility to the area just behind the machine is not possible, an
appropriate device, or combination of devices, shall be provided, such as:— means for indirect visibility (such as mirrors, CCTV);
— an audible reverse warning alarm which is automatically engaged when reverse drive is selected
and in accordance with ISO 9533;— visual warning signal;
— protective device, to detect the presence of persons and stop the machinery or warn the driver.
NOTE Consider operating conditions such as regularly moving backward and forward on the farmyard.
If a cabin is provided, provisions to install devices for defrosting and demisting the front window(s)
shall be made and glare from sunshine or artificial lighting shall be minimized by adjustable shielding,
by location or other means.5.1.8.1
Modify 5.1.8.1 to read:
5.1.8.1 To avoid unauthorized activation of the engine starting, means such as the following shall be
provided:— key-operated ignition or starting switch;
— lockable cab;
— lockable cover for the ignition or starting switch;
— security ignition or starting lock;
— lockable battery disconnecting switch.
Information to avoid unauthorized starting shall be provided in the operator’s manual [see 8.2.3 f)].
© ISO 2020 – All rights reserved 3---------------------- Page: 6 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
6.4
Add the following NOTE at the end of 6.4.1:
NOTE It is intended to move the specifications of 6.4.1 into another standard in the future (for example
ISO 5673-1).8.2
Modify 8.2.3 b) to read
b) compatibility with the tractors, for example hitching system, PTO drive shaft, vertical load
at hitching point, engine power, stability (see 6.3.1, 6.3.2, 6.4.1), including instructions where
replacement of the drive shaft and/or PIC guard are needed, to be clear, concise, and maintain the
safety level of the elements that are replaced. When applicable, the information shall include:
— type of connections on the PTO side;— type of connections on the PIC side;
— maximum allowed diameter of the guards for compatibility with the PIC guard;
— type of allowed locking system(s);
— type and setting of overload protection device;
— power and speed to be transmitted;
— length and procedure to adapt the length;
Add the following to 8.2.3:
z) information on the use of the PTO-drive-shaft for PTO-driven equipment, such as:
— information about the interaction between PTO-drive-shaft guarding and PIC guard;
— information, if necessary, on how to attach the restraining system;— the need to and how to use a support for the PTO drive shaft when it is not in use, that is
different from the restraining system and which does not cause such damage to the guard that
the telescoping of the inner and outer tubes is prevented.Annex E
Add a new Annex E:
4 © ISO 2020 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
ANNEX E
(informative)
Guidance for risk assessment and determination of performance
levels for safety-related parts of control systems
E.1 Risk assessment was used to determine the requirements of ISO 4254-1 and the requirements of
associated machine specific type-C standards. This annex provides some basic guidance for the use of
risk assessment when determining requirements either of related machine specific standards or for
hazards not covered by those documents, including the required performance level for safety-related
parts of control systems. Additional requirements to deal with hazards not covered by ISO 4254-1 and
associated machine specific type-C standards are outside the scope of those standards.
Risk assessment and the allocation of required performance levels are not simple issue and should be
carried out by suitably qualified and experienced persons (see E.3). The requirements of ISO 12100
for risk assessment and ISO 13849 (all parts) or ISO 25119 (all parts) for performance levels should be
taken into account as they provide a more detailed approach.The specification and verification of the performance level should cover the whole of the safety-related
control system from input sensors to final switching devices (e.g. to stop hazardous motion).
E.2 To achieve optimum results, the machine design accompanying risk assessment and the
determination of the required performance level are considered in parallel. This is due to the
interdependence of the machine's safety concept (for example inherently safe design, protective
measures, etc.) with the determination of the requi...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.