Safety of machinery - Safety requirements for tube forming and rolling mills and finishing line equipment

2009-04-17 - CEN/TC 322 resubmit new version of text to CMC.

Sicherheit von Maschinen - Sicherheitsanforderungen an Rohrform- und Rohrwalzwerke und Adjustageanlagen

Sécurité des machines - Prescriptions pour formeuses et laminoirs à tubes et de lignes de parachèvement

Varnost strojev - Varnostne zahteve za cevarne, valjarne in opremo za pakiranje blaga

General Information

Status
Not Published
Current Stage
5060 - Closure of Vote - Formal Approval
Due Date
20-Jan-2010
Completion Date
20-Jan-2010

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SLOVENSKI STANDARD
SIST EN 13675:2004/kFprA1:2009
01-oktober-2009
Varnost strojev - Varnostne zahteve za cevarne, valjarne in opremo za pakiranje
blaga

Safety of machinery - Safety requirements for tube forming and rolling mills and finishing

line equipment

Sicherheit von Maschinen - Sicherheitsanforderungen an Rohrform- und Rohrwalzwerke

und Adjustageanlagen

Sécurité des machines - Prescriptions pour formeuses et laminoirs à tubes et de lignes

de parachèvement
Ta slovenski standard je istoveten z: EN 13675:2004/FprA1
ICS:
13.110 Varnost strojev Safety of machinery
77.180 Oprema za metalurško Equipment for the
industrijo metallurgical industry
SIST EN 13675:2004/kFprA1:2009 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 13675:2004/kFprA1:2009
---------------------- Page: 2 ----------------------
SIST EN 13675:2004/kFprA1:2009
EUROPEAN STANDARD
FINAL DRAFT
EN 13675:2004
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
August 2009
ICS 77.180
English Version
Safety of machinery - Safety requirements for tube forming and
rolling mills and finishing line equipment

Sécurité des machines - Prescriptions pour formeuses et Sicherheit von Maschinen - Sicherheitsanforderungen an

laminoirs à tubes et de lignes de parachèvement Rohrform- und Rohrwalzwerke und Adjustageanlagen

This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee

CEN/TC 322.

This draft amendment A1, if approved, will modify the European Standard EN 13675:2004. If this draft becomes an amendment, CEN

members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment

into the relevant national standard without any alteration.

This draft amendment was established by CEN 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 Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13675:2004/FprA1:2009: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)
Contents Page

Foreword ..............................................................................................................................................................3

1 Modification to the "Foreword" ............................................................................................................4

2 Modification to the Clause "1 Scope" .................................................................................................4

3 Modification to the "Introduction" .......................................................................................................4

4 Modification to Clause "2 Normative references" .............................................................................4

5 Modification to Clause "3 Terms and definitions" ............................................................................7

6 Modification to Clause "4 List of significant hazards" .....................................................................7

7 Modification to Clause "5 Safety Requirements and/or measures" and 5.1 ..................................7

8 Modification to "5.2 List of hazards, hazardous situations, safety requirements and/or

measures (Table 1)" ............................................................................................................................ 13

9 Modification to Table 1 .......................................................................................................................... 14

10 Modification to "5.3.4 Hydraulic and pneumatic system" ................................................................ 15

11 Modification to 5.4.1 " Noise reduction at source by design" .......................................................... 15

12 Modification to "7.1 General", "7.2 Signals, warnings" and "7.3 Minimum marking" ......................... 15

13 Modification to "7.4 Instruction handbook" .................................................................................... 16

14 Modification to Annex A ..................................................................................................................... 19

15 Modification to Annex B ..................................................................................................................... 23

16 Modification to Annex D ..................................................................................................................... 28

17 Addition of new Annex ZB ................................................................................................................. 28

18 Modification to Bibliography ............................................................................................................. 28

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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)
Foreword

This document (EN 13675:2004/FprA1:2009) has been prepared by Technical Committee CEN/TC 322

“Equipment for making and shaping of metals — Safety requirements”, the secretariat of which is held by DIN.

This document is currently submitted to the Unique Acceptance Procedure.

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 and ZB, which is an integral part of this

document.

The new safety requirements as stated in this document comply with the additional relevant Essential

Requirements of the new Machinery Directive 2006/42/EC complementing the existing Machinery Directive

98/37/EC.
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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)
1 Modification to the "Foreword"
Replace the 4 paragraph with:

"For relationship with EU Directives, see informative Annexes ZA and ZB, which are integral parts of this

document.".
2 Modification to the Clause "1 Scope"
In the 4 paragraph, replace "prEN 12464-1" with "EN 12464-1".
3 Modification to the "Introduction"
Replace existing text with:
"This document is a type-C standard as stated in EN ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are

covered are indicated in the Scope of this document.

When requirements of this type-C standard are different from those which are stated in type-A or B

standards, the requirements of this type-C standard take precedence over the requirements of the other

standards for machines that have been designed and built according to the requirements of this type-C

standard.

Where for clarity an example of a preventative measure is given in the text, this should not be considered

as the only possible solution. Any other solution leading to the same risk reduction is permissible if an

equivalent level of safety is achieved.

This European Standard assumes that the equipment is operated and maintained by trained personnel.".

4 Modification to Clause "2 Normative references"
Replace the 1 paragraph with:

"The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies."

Due to comprehensive changes (e.g. EN with EN ISO) and new/updated standards, replace the whole list of

normative references with:

"EN 349:1993, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body

EN 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general

principles

EN 614-2, Safety of machinery — Ergonomic design principles — Part 2: Interactions between the

design of machinery and work tasks

EN 626-1:1994, Safety of machinery — Reduction of risks to health from hazardous substances emitted

by machinery — Part 1: Principles and specifications for machinery manufacturers
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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)

EN 842, Safety of machinery — Visual danger signals — General requirements, design and testing

EN 853, Rubber hoses and hose assemblies — Wire braid reinforced hydraulic type — Specification

EN 854, Rubber hoses and hose assemblies — Textile reinforced hydraulic type — Specification

EN 856, Rubber hoses and hose assemblies — Rubber-covered spiral wire reinforced hydraulic type —

Specification

EN 857, Rubber hoses and hose assemblies — Wire braid reinforced compact type for hydraulic

applications — Specification

EN 894-1, Safety of machinery — Ergonomics requirements for the design of displays and control

actuators — Part 1: General principles for human interactions with displays and control actuators

EN 894-2, Safety of machinery — Ergonomics requirements for the design of displays and control

actuators — Part 2: Displays

EN 894-3, Safety of machinery — Ergonomics requirements for the design of displays and control

actuators — Part 3: Control actuators

EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction

of fixed and movable guards

EN 981:1996, Safety of machinery — System of auditory and visual danger and information signals

EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components

— Hydraulics

EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components

— Pneumatics

EN 999:1998, Safety of machinery — The positioning of protective equipment in respect of approach

speeds of parts of the human body
EN 1037:1995, Safety of machinery — Prevention of unexpected start-up

EN 1063, Glass in building — Security glazing — Testing and classification of resistance against bullet

attack

EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for

design and selection

EN 1299, Mechanical vibration and shock — Vibration isolation of machines — Information for the

application of source isolation
EN 1837, Safety of machinery — Integral lighting of machines

EN 12198-1, Safety of machinery — Assessment and reduction of risks arising from radiation emitted by

machinery — Part 1: General principles
EN 12254, Screens for laser working places — Safety requirements and testing

EN 13861, Safety of machinery — Guidance for the application of ergonomics standards in the design of

machinery

EN 14253, Mechanical vibration — Measurement and calculation of occupational exposure to whole-

body vibration with reference to health — Practical guidance
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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)
EN 50171, Central power supply systems

EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General

requirements (IEC 60204-1:2005, modified)

EN 60447, Basic and safety principles for man-machine interface — Marking and identification —

Actuating principles (IEC 60447:2004)

EN 60825-1:2007, Safety of laser products — Part 1: Equipment classification and requirements

(IEC 60825-1:2007)

EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,

acoustic and tactile signals (IEC 61310-1:2007)

EN 61310-2, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for

marking (IEC 61310-2:2007)

EN 61496-1, Safety of machinery — Electro- sensitive protective equipment — Part 1: General

requirements and tests (IEC 61496-1:2004, modified)

EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)

EN ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and

equipment (ISO 4871:1996)

EN ISO 7731:2005, Ergonomics — Danger signals for public and work areas — Auditory danger signals

(ISO 7731:2003)

EN ISO 9692-2, Welding and allied processes — Joint preparation — Part 2: Submerged arc welding of

steels (ISO 9692-2:1998)

EN ISO 11064-1, Ergonomic design of control centres — Part 1: Principles for the design of control

centres (ISO 11064-1:2000)

EN ISO 11202, Acoustics — Noise emitted by machinery and equipment — Measurement of emission

sound pressure levels at a work station and at other specified positions — Survey method in situ

(ISO 11202:1995)

EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and

equipment — Part 1: Planning (ISO/TR 11688-1:1995)

EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1:

Basic terminology, methodology (ISO 12100-1:2003)

EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2:

Technical principles (ISO 12100-2:2003)

EN ISO 13732-1:2008, Ergonomics of the thermal environment — Methods for the assessment of

human responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1:2006)

EN ISO 13849-1:2006, Safety of machinery — Safety-related parts of control systems — Part 1: General

principles for design (ISO 13849-1:2006)

EN ISO 13850:2006, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006)

EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by

upper and lower limbs (ISO 13857:2008)

EN ISO 14121-1, Safety of machinery — Risk assessment — Part 1: Principles (ISO 14121-1:2007)

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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)

EN ISO 14122-1, Safety of machinery — Permanent means of access to machinery — Part 1: Choice of

a fixed means of access between two levels (ISO 14122-1:2001)

EN ISO 14122-2, Safety of machinery — Permanent means of access to machinery — Part 2: Working

platforms and walkways (ISO 14122-2:2001)

EN ISO 14122-3, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs,

stepladders and guard-rails (ISO 14122-3:2001)

EN ISO 14122-4, Safety of machinery — Permanent means of access to machines and industrial plants

— Part 4: Fixed ladders (ISO 14122-4:2004)

ISO 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety

signs in workplaces and public areas
ISO 7000, Graphical symbols for use on equipment — Index and synopsis".
5 Modification to Clause "3 Terms and definitions"
Replace the paragraph with:

"For the purpose of this document, the terms and definitions given in EN ISO 12100:2003 and the

following apply.

NOTE Definitions used in EN and ISO standards referred to in this European Standard are also valid for this

European Standard.".

Replace the 1 capital letter(s) of term(s) with lower case letters, e.g. product/material, pulpit, control stand.

These editorial changes have not been tagged to avoid over-tagging of the text due to minor editorial updates.

6 Modification to Clause "4 List of significant hazards"
Replace the last paragraph with:

"Before using this European Standard it is important for the manufacturer to carry out a risk assessment

of the machines which form a plant to identify any other relevant hazards (see EN ISO 14121-1).".

7 Modification to Clause "5 Safety Requirements and/or measures" and 5.1

Replace the hanging paragraphs (inclusive the NOTE) directly after the headline of Clause 5 and the headline

5.1 with: "
5.1 General design requirements
5.1.1 Introduction

Plant conforming to this European Standard shall comply with the safety requirements and/or measures

of Clause 5 and those set out in Clause 7 and Annex A and B. Relevant hazards identified in the risk

assessment carried out by the manufacturer but not dealt with in this European Standard shall be

reduced by applying the principle of EN ISO 12100-2.
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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)

For hazards which are to be reduced by the application of a B standard such as e.g. EN ISO 13857,

EN ISO 13850, EN ISO 13732-1 the risk assessment carried out by the manufacturer shall establish the

requirements of the B standard which are to be applied. This specific risk assessment shall be part of the

general risk assessment of the machine.

Where the means of reducing the risk is by the physical arrangement or positioning of the installed

machines, the manufacturer shall include in the Information for use a reference to these specific reduction

means.

Where the means of reducing the risk is by a safe system of working the plant, the manufacturer shall

include in the information for use details of the system and of the elements of information required by the

operating personnel. This shall include arrangements to run a machine for essential operating reasons or

in special mode with safety devices suspended or temporarily modified.

This clause specifies and explains the preventative measures given in Table 1 and it also describes

additional safety features, procedures and techniques which shall be considered by the designer and the

manufacturer of the equipment.".

Due to new and technically updated sub-clauses (and the resulting re-numbering) as well as the new format of

the indents and editorial improvements in the existing sub-clauses, replace the sub-clauses 5.1.1 to 5.1.16

with: "
5.1.2 Site inspection

The manufacturer shall undertake sufficient site inspection to establish all requirements of the plant

design for:
a) accessibility;
b) maintenance and clearance gaps for cleaning;
c) movement of machinery and material;
d) safe operation;
e) health and safety at the workplace;
f) prevention of emissions hazardous to health at the workplace.
5.1.3 Structural assembly

The manufacturer shall undertake and record design calculations to show that the structural assembly,

e.g. steel sections, auxiliaries, lifting points and fixtures, which form part of the equipment are adequate

for safety functions under intended use.
5.1.4 Safety layout

The manufacturer shall prepare a safety layout document of the extrusion press. The aim of the safety

layout is to give information (normally by means of one or more drawings) about the physical position of

safety related elements like, e.g.:
a) isolators according to EN 60204-1;
b) emergency stop buttons, according to the requirements of EN ISO 13850;
c) escape routes (if necessary, e.g. for large plants);

d) other safety-related safety marking, according to the requirements of EN ISO 7731, EN 842;

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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)

e) segregating devices (guards, fences, trip devices etc.) intended to prevent access to danger areas of

the plant according to the requirements of EN ISO 13857, EN 953, EN ISO 14122-2;

f) doors and other points of access to the plant (where required with related locking and/or interlocking

devices);

g) warning devices and safety signs (warning signs for, e.g. forbidden access, X-rays);

h) fire precautions.

The safety layout shall be included into the manufacturer's instructions for use.

5.1.5 Safety devices

Safety devices shall be accessible for inspection and maintenance, and protected against damage under

foreseeable conditions. In particular, they shall be sufficiently robust to operate reliably.

5.1.6 Hydraulic, pneumatic, cooling and lubrication systems

Hydraulic, pneumatic, cooling and lubrication systems shall be designed to reduce risks from toxic effects,

fire, explosion, vibration and noise. Hazards associated with pressure, temperature, ignition sources, and

proximity to adjacent personnel shall be taken into account. In no case shall the system be designed to

safety requirements lower than those described in EN 982 or EN 983 and take account of Table 1.

5.1.7 Fluid systems carrying or containing fluids

Manufacturers of plant using fluid systems carrying or containing fluids which are likely to solidify and/or

have high or low viscosity and impair safety, shall provide protection against temperatures giving rise to

these effects. Data shall be provided in the information for use.
5.1.8 Guard-rails

Guard-rails are to be considered as means to deter or impede access to hazardous areas, i.e. a physical

obstacle which only reduces the probability of access (but not totally prevents it), offering an obstruction

to free access (see 3.27 of EN ISO 12100-1:2003).

Therefore, guard-rails are not permitted as the sole measure of safeguarding hazardous areas in case of

significant risks (e.g. from moving machinery or processed material).

Guard-rails shall be used for cases where the hazards of slips, trips and falls are involved.

Guard-rails can be used as a measure to prevent unintentional access of unauthorised persons to zones

where residual risks exist. At zones, where risks due to potentially danger movements of equipment exist,

operation of manual modes shall be made by means of hold-to-run devices from control stands with full

overview of the driving elements.

The evaluation of the degree of risk associated to a specific hazardous situation shall be performed

during individual risk assessment by the manufacturer in compliance with EN ISO 14121-1. However,

guard-rails, are not to be considered as sufficient measures of safeguarding to address hazardous

situations included in Table 1, where only significant hazards are dealt with.
Guard-rails shall conform to EN ISO 14122-3.

In addition, the manufacturer shall give information in the instructions for use (see Clause 7) about the

foreseen restrictions for access to the areas surrounded by the guard-rails and about the nature of the

existing residual risks.
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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)
5.1.9 Material to be discharged to drains

The manufacturer shall give information on the material to be discharged to drains. This information shall

include connection means to waste discharge points and floor drains which form part of the equipment.

The information shall be included in the information for use.
5.1.10 Personal protective equipment

The manufacturer shall give information in the information for use (see Clause 7) on the required

attributes of any personal protective equipment (PPE, see column 3 of Table 1) needed to safeguard

personnel from any residual risks remaining after applying the safety requirements.

5.1.11 Safety signs and warning devices

Safety signs and warning devices according to EN 61310-1 and to EN 61310-2 shall be used.

Graphical symbols shall be in accordance with ISO 3864-1 and/or ISO 7000.

Danger signals shall be in accordance with EN ISO 7731 and/or EN 842 and/or EN 981.

Warning signs about non-ionising radiation for persons with implanted medical devices shall be fixed

where applicable.

The manufacturer shall not rely upon warning devices alone to reduce hazards in case of significant risks.

5.1.12 Access
5.1.12.1 Access to operating points

a) Access to control desks, pulpits, underground areas, inspection and service floors shall be realized in

accordance with EN ISO 14122-1, EN ISO 14122-2, EN ISO 14122-3 and EN ISO 14122-4 and

protected against heat radiation according EN 12198-1 and designed to withstand moving material,

tools and jets of high pressure fluids or gases.

b) Surfaces for walking or standing shall be selected so that risks of slips, trips and falls caused by

scale, oil, emulsion and/or lubricant are avoided or reduced.

c) Physical barriers shall be provided and warning signs shall be installed so that they are visible from

outside the danger zone.
5.1.12.2 Access to danger zones

a) Plants shall be safeguarded in such a way that hazardous situations arising from access of persons

to danger zones shall be prevented.

b) In particular, access to the danger zones where automatic process take place shall be in general

prevented, because of the presence of dangerous movements and/or conditions of the involved

equipment.

c) The manufacturer shall define the areas where access inside danger zones is required for inspection.

Additional safety precautions as defined in 5.1.12.3 are required.

d) Operators may enter the danger area for operating or maintenance purposes. Safety measures and

intervention procedures as defined in 5.1.12.3 shall be applied.
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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)

e) Physical barriers (e.g. guards, see 5.1.15) shall be in general provided to safeguard the danger

zones; also safety devices (e.g. trip devices), alone or in combination with guards can be used to

achieve the required level of safety (see 5.3.3 of EN ISO 12100-2:2003).

f) The relevant category for control devices covering safety functions in relation with access of persons

to danger zones during operation or maintenance, shall be selected according to 5.1.14 and Annex A.

g) The manufacturer shall specify in the information for use the conditions (including details about safe

systems of working, as well as adoption of precautions like PPE, use of handling tools etc.) under

which access to the danger zones of the plant be permitted (see 7.4, 7.5 and Annex C).

5.1.12.3 Access for inspection purposes under operational conditions

Appropriate safety measures and/or intervention procedures shall be applied to allow authorized

personnel access to danger zones under operational conditions, e.g. it might be necessary to enter the

danger zone at mill stands or drives for inspection. For these specific actions safety measures shall be

considered, in particular:

a) conditions for access: at least operation at reduced speed and other measures like indication to the

main pulpit, switching to manual control mode, switching off the X-ray measuring device;

b) conditions for staying/working at/in danger zones such as operation of manual modes by means of

hold-to-run control with full overview of the danger zone, operation at reduced speed;

c) conditions for re-start: access doors shall be closed (taking care that no person is inside the danger

zone) and reset-button has been pushed (or similar action).

Normal operation speed shall only be achievable if interlocking guards are in protective position.

The manufacturer shall specify in the information for use the safety measures provided and the conditions

under which access to the danger zones shall be permitted, including details about safe systems of

working, as well as adoption of precautions like PPE, use of handling tools etc.
5.1.13 Electrical equipment

Electrical equipment shall conform to EN 60204-1. In particular the manufacturer shall construct and

install all electrical equipment so that it is capable of withstanding all hazards, including those form heat,

vibration, wet conditions, identified in the risk assessment required at the design stage and taking into

account the requirement set out in Annex A.
5.1.14 Safety control system

Safety controls shall be selected in accordance with the severity of the risk as described in

EN ISO 13849-1. The operation of each safety control shall be considered in combination with other

elements of the safety control system and be shown not to reduce the safety level of any other element of

the system.

For the hazards listed in Table 1 where a control system is involved a risk assessment has to be carried

out according to EN ISO 13849-1.
5.1.15 Guards

A guard used to prevent access to a danger zone shall be selected as appropriate for the degree of

access (e.g. frequency) to be permitted, that is e.g. an enclosing guard or distance guard, fixed or

movable with interlock. This selection shall be made in conformity with Clause 6 of EN 953:1997. The

guards identified in 5.2, Table 1 have been selected by this procedure.
Guard shall conform to Clause 5 of EN 953:1997 considering EN ISO 13857.
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SIST EN 13675:2004/kFprA1:2009
EN 13675:2004/FprA1:2009 (E)
5.1.16 Surface temperatures and heat radiation

Surfaces which are accessible and could be touched shall have temperatures not exceeding the burn

threshold for contact time and material specified in EN ISO 13732-1. Where these limits can not be kept,

additional technical measures shall be applied, e.g. isolation, distance guard. These measures shall be

supplemented by warning instructions and wearing of P
...

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