Personal protective equipment - Occupational footwear - (ISO 20347:2004)

ISO 20347:2004 specifies basic and additional (optional) requirements for occupational footwear.

Persönlliche Schutzausrüstung - Berufsschuhe (ISO 20347:2004)

Equipement de protection individuelle - Chaussures de travail (ISO 20347:2004)

L'ISO 20347:2004 spécifie les exigences fondamentales et additionnelles (facultatives) des chaussures de travail.

Osebna varovalna oprema - Delovna obutev (ISO 20347:2004)

General Information

Status
Withdrawn
Publication Date
31-Jul-2004
Withdrawal Date
31-Jan-2012
Current Stage
9960 - Withdrawal effective - Withdrawal
Due Date
01-Feb-2012
Completion Date
01-Feb-2012

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SLOVENSKI STANDARD
SIST EN ISO 20347:2004
01-oktober-2004
1DGRPHãþD
SIST EN 347:1996
SIST EN 347-2:1996
Osebna varovalna oprema - Delovna obutev (ISO 20347:2004)
Personal protective equipment - Occupational footwear - (ISO 20347:2004)
Persönlliche Schutzausrüstung - Berufsschuhe (ISO 20347:2004)
Equipement de protection individuelle - Chaussures de travail (ISO 20347:2004)
Ta slovenski standard je istoveten z: EN ISO 20347:2004
ICS:
13.340.50 Varovanje nog in stopal Leg and foot protection
SIST EN ISO 20347:2004 en

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

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN ISO 20347
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2004
ICS 13.340.50 Supersedes EN 347:1992, EN 347-2:1996
English version
Personal protective equipment - Occupational footwear
(ISO 20347:2004)

Equipement de protection individuelle - Chaussures de Persönlliche Schutzausrüstung - Berufsschuhe (ISO

travail (ISO 20347:2004) 20347:2004)
This European Standard was approved by CEN on 2 January 2004.

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 Central Secretariat 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 Central Secretariat has the same status as the official

versions.

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

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

Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20347:2004: E

worldwide for CEN national Members.
---------------------- Page: 2 ----------------------
EN ISO 20347:2004 (E)
Contents page

Foreword..............................................................................................................................................................4

1 Scope......................................................................................................................................................5

2 Normative references............................................................................................................................5

3 Terms and definitions ...........................................................................................................................5

4 Classification........................................................................................................................................11

5 Basic requirements for occupational footwear ................................................................................12

5.1 General..................................................................................................................................................12

5.2 Design...................................................................................................................................................15

5.2.1 Height of upper ....................................................................................................................................15

5.2.2 Seat region...........................................................................................................................................15

5.3 Whole footwear....................................................................................................................................15

5.3.1 Sole performance.................................................................................................................................15

5.3.2 Leakproofness.....................................................................................................................................15

5.3.3 Specific ergonomic features...............................................................................................................15

5.4 Upper.....................................................................................................................................................16

5.4.1 General..................................................................................................................................................16

5.4.2 Thickness.............................................................................................................................................16

5.4.3 Tear strength........................................................................................................................................17

5.4.4 Tensile properties................................................................................................................................17

5.4.5 Flexing resistance................................................................................................................................17

5.4.6 Water vapour permeability and coefficient .......................................................................................17

5.4.7 pH value................................................................................................................................................17

5.4.8 Hydrolysis.............................................................................................................................................18

5.4.9 Chromium VI content ..........................................................................................................................18

5.5 Lining....................................................................................................................................................18

5.5.1 Tear strength........................................................................................................................................18

5.5.2 Abrasion resistance............................................................................................................................18

5.5.3 Water vapour permeability and coefficient .......................................................................................18

5.5.4 pH value................................................................................................................................................18

5.5.5 Chromium VI content ..........................................................................................................................18

5.6 Tongue..................................................................................................................................................19

5.6.1 Tear strength........................................................................................................................................19

5.6.2 pH value................................................................................................................................................19

5.6.3 Chromium VI content ..........................................................................................................................19

5.7 Insole and insock.................................................................................................................................19

5.7.1 Thickness.............................................................................................................................................19

5.7.2 pH value................................................................................................................................................19

5.7.3 Water absorption and desorption ......................................................................................................19

5.7.4 Abrasion resistance............................................................................................................................19

5.7.5 Chromium VI content ..........................................................................................................................20

5.8 Outsole..................................................................................................................................................20

5.8.1 Thickness of non-cleated outsoles....................................................................................................20

5.8.2 Tear strength........................................................................................................................................20

5.8.3 Abrasion resistance............................................................................................................................20

5.8.4 Flexing resistance................................................................................................................................20

5.8.5 Hydrolysis.............................................................................................................................................20

5.8.6 Interlayer bond strength.....................................................................................................................20

6 Additional requirements for occupational footwear ........................................................................21

6.1 General..................................................................................................................................................21

---------------------- Page: 3 ----------------------
EN ISO 20347:2004 (E)

6.2 Whole footwear....................................................................................................................................21

6.2.1 Penetration resistance........................................................................................................................21

6.2.2 Electrical properties............................................................................................................................23

6.2.3 Resistance to inimical environments................................................................................................23

6.2.4 Energy absorption of seat region ......................................................................................................24

6.2.5 Water resistance..................................................................................................................................24

6.2.6 Ankle protection..................................................................................................................................24

6.3 Upper....................................................................................................................................................24

6.3.1 Water penetration and water absorption ..........................................................................................24

6.3.2 Construction........................................................................................................................................24

6.4 Outsole.................................................................................................................................................24

6.4.1 Cleated area.........................................................................................................................................24

6.4.2 Thickness of cleated outsoles ...........................................................................................................25

6.4.3 Cleat height..........................................................................................................................................25

6.4.4 Resistance to hot contact...................................................................................................................25

6.4.5 Resistance to fuel oil...........................................................................................................................25

7 Marking.................................................................................................................................................25

8 Information to be supplied .................................................................................................................26

8.1 General.................................................................................................................................................26

8.2 Electrical properties............................................................................................................................27

8.2.1 Conductive footwear...........................................................................................................................27

8.2.2 Antistatic footwear..............................................................................................................................28

8.2.3 Electrically insulating footwear .........................................................................................................28

8.3 Insocks.................................................................................................................................................29

Annex ZA (informative) Clauses of this European Standard addressing essential requirements or

other provisions of EU Directives......................................................................................................30

Annex ZB (normative) Corresponding International and European Standards for which

equivalents are not given in the text .................................................................................................32

Bibliography......................................................................................................................................................33

---------------------- Page: 4 ----------------------
EN ISO 20347:2004 (E)
Foreword

This document (EN ISO 20347:2004) has been prepared by Technical Committee CEN/TC 161 “Foot and leg

protectors”, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 94

“Personal safety - Protective clothing and equipment”.

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 February 2005, and conflicting national standards shall be withdrawn

at the latest by August 2005.

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.

In conjunction with EN ISO 20344:2004, this standard supersedes EN 347:1992 and EN 347-2:1996.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

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

and United Kingdom
---------------------- Page: 5 ----------------------
EN ISO 20347:2004 (E)
1 Scope

This European Standard specifies basic and additional (optional) requirements for occupational footwear.

2 Normative references

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.

EN 12568: 1998, Foot and leg protectors – Requirements and test methods for toecaps and metal penetration

resistant inserts

EN ISO 20344:2004, Personal protective equipment - Test methods for footwear (ISO 20344:2004)

3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
NOTE The component parts of footwear are illustrated in figures 1 and 2.
3.1
occupational footwear

footwear, incorporating protective features to protect the wearer from injuries which could arise through

accidents
3.2
leather
3.2.1
full grain leather

hide or skin tanned to be imputrescible having conserved the totality of its grain

3.2.2
corrected grain leather

hide or skin tanned to be imputrescible which has been subjected to mechanical buffing to modify its grain

structure
3.2.3
leather split

flesh or middle part of a hide or skintanned to be imputrescible obtained by splitting a thick leather

3.3
rubber
vulcanized elastomers
3.4
polymeric materials
for example polyurethane or polyvinylchloride
---------------------- Page: 6 ----------------------
EN ISO 20347:2004 (E)
3.5
insole

non-removable component used to form the base of the shoe to which the upper is usually attached during

lasting
3.6
insock

removable or permanent footwear component used to cover part or all of the insole

3.7
lining
material covering the inner surface of the upper
NOTE 1 The wearer’s foot is in direct contact with the lining.

NOTE 2 Where an upper is split at the forepart to house the toecap, or if an external piece of material is stitched to the

upper to form a pocket to house the toecap, the material under the toecap acts as a lining.

3.7.1
vamp lining
material covering the inner surface of the forepart of the upper
3.7.2
quarter lining
material covering the inner surface of the quarters of the upper
3.8
cleat(s)
protruding part(s) of the outer surface of the sole
3.9
rigid outsole

sole which, when the complete footwear is tested in accordance with EN ISO 20344:2004, 8.4.1, can not be

bent through an angle of 45° under a load of 30 N
3.10
cellular outsole

outsole having a density of 0,9 g/ml or less with a cell structure visible under 10x magnification

3.11
penetration-resistant insert

footwear component placed in the sole complex in order to provide protection against penetration

3.12
seat region
backpart of the footwear (upper and sole)
3.13
conductive footwear

footwear whose resistance, when measured according to EN ISO 20344:2004, 5.10, lies in the range of

0 to 100 kΩ
3.14
antistatic footwear

footwear whose resistance, when measured according to EN ISO 20344:2004, 5.10, lies above 100 kΩ and is

less than or equal to 1 000 MΩ
---------------------- Page: 7 ----------------------
EN ISO 20347:2004 (E)
3.15
electrically insulating footwear

denotes footwear which protects the wearer against electrical shocks by preventing the passage of dangerous

current through the body via the feet
3.16
fuel oil
aliphatic hydrocarbon constituent of petroleum
3.17
specific job related footwear

safety, protective or occupational footwear relating to a specific profession, e.g. footwear for firefighters,

footwear with resistance to chain saw cutting, etc.
---------------------- Page: 8 ----------------------
EN ISO 20347:2004 (E)
4 2
16 5
9 13
Key
1 Facing 6 Insock 11 Penetration-resistant insert
2 Tongue 7 Toe puff 12 Insole
Edge covering,
3 Collar 8 e.g. foam strip, 13 Heel
if present
4 Upper 9 Outsole 14 Strobel stitching
5 Vamp lining 10 Cleat 15 Quarter
16 Vamp
Figure 1a) Parts of footwear of Strobel construction
---------------------- Page: 9 ----------------------
EN ISO 20347:2004 (E)
Key
1 Upper 3 Rigid sole 5 Outsole
2 Toecap 4 Reinforcing welt 6 Wooden sole
with nails
Figure 1b) Parts of footwear of conventional construction
---------------------- Page: 10 ----------------------
EN ISO 20347:2004 (E)
Key
1 Upper 3 Outsole
2 Vamp 4 Heel

Figure 2 — Parts of all-rubber (i.e. vulcanized) or all-polymeric (i.e. entirely moulded) footwear

---------------------- Page: 11 ----------------------
EN ISO 20347:2004 (E)
4 Classification
Footwear shall be classified in accordance with table 1.
Table 1 — Classification of footwear
Code designation Classification
I Footwear made from leather and other materials,
excluding all-rubber or all-polymeric footwear
II All-rubber (i.e. entirely vulcanized) or all-polymeric
(i.e. entirely moulded) footwear
AB C
1
Key
1 Variable extension which can be
adapted to the wearer
A Low shoe B Ankle boot D Knee-height boot
C Half-knee boot E Thigh boot

NOTE Design E can be a knee-height boot (design D) equipped with a thin impermeable material which extends the

upper and which can be cut to adapt the boot to the wearer
Figure 3 — Designs of footwear
---------------------- Page: 12 ----------------------
EN ISO 20347:2004 (E)
5 Basic requirements for occupational footwear
5.1 General

Occupational footwear shall comply with the basic requirements given in table 2, one of the 5 options given in

table 3 and additionally with at least one of the requirements for whole footwear given in table 12.

Footwear without both an insole and insock or without an insole but with a removable insock is non-compliant

with this standard.
---------------------- Page: 13 ----------------------
EN ISO 20347:2004 (E)
Table 2 — Basic requirements for occupational footwear
Requirement Clause Classification
I II
Height of upper 5.2.1 X X
Seat region: 5.2.2
Design
Design A X
Design B, C, D, E X X
Sole performance: 5.3.1
Construction 5.3.1.1 X
Whole
Upper/outsole bond strength 5.3.1.2 X
footwear
Leakproofness 5.3.2 X
Specific ergonomic features 5.3.3 X X
General 5.4.1 X X
Thickness 5.4.2 X
Tear strength 5.4.3 X
Tensile properties 5.4.4 X X
Upper
Flexing resistance 5.4.5 X
Water vapour permeability and coefficient 5.4.6 X
pH value 5.4.7 X
Hydrolysis 5.4.8 X
Chromium VI content 5.4.9 X
Tear strength 5.5.1O
Abrasion resistance 5.5.2 O
Vamp lining
Water vapour permeability and coefficient 5.5.3 O
pH value 5.5.4 O
Chromium VI content 5.5.5 O
Tear strength 5.5.1O
Abrasion resistance 5.5.2 O
Quarter
Water vapour permeability and coefficient 5.5.3 O
lining
pH value 5.5.4 O
Chromium VI content 5.5.5 O
Tear strength 5.6.1O
Tongue
pH value 5.6.2 O
Chromium VI content 5.6.3 O
Thickness of non-cleated outsoles 5.8.1 X X
Tear strength 5.8.2 X
Abrasion resistance 5.8.3 X X
Outsole
Flexing resistance 5.8.4 X X
Hydrolysis 5.8.5 X X
Interlayer bond strength 5.8.6 O O

NOTE The applicability of a requirement to a particular classification is indicated in this table by the

following:

X the requirement shall be met. In some cases the requirement relates only to particular

materials within the classification - e.g. pH value of leather components. This does not mean

that other materials are precluded from use.
O If the component part exists, the requirement shall be met.
The absence of X or O indicates that there is no requirement.
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EN ISO 20347:2004 (E)
Table 3 — Basic requirements for insoles and/or insocks
Requirements to fulfil
Water
Compo-
absor-
Thick- a Abras- Chrom- Abras-
Options nent to be
pH a
ption
ness ion ium VI ion
assessed
desorp-
5.7.2
5.7.5
5.7.1 5.7.4.1 5.7.4.2
tion
5.7.3
No insole or
Non-
if present not
1 removable Insock X X X X X
fulfilling the
insock
requirements
No insock
2 Insole X X X X X
Seat sock
present
Insock and
Full insock,
insole X X
non-
together
removable
Insole Insock X X X
present
Full insock,
Insole X X X X X
removable
and water
permeable
Insock X X X
Full insock,
Insole X X X X X
removable,
not water
Insock X X X X
permeable
X the requirement shall be met.
NOTE For removable insocks see 8.3.
those requirements are only for leather

a water permeable insock is one that, when tested in accordance with EN ISO 20344:2004, 7.2, lets water through in

60 s or less
---------------------- Page: 15 ----------------------
EN ISO 20347:2004 (E)
5.2 Design
Footwear shall conform to one of the designs given in figure 3.
5.2.1 Height of upper

The height of the upper measured in accordance with EN ISO 20344:2004, 6.2, shall be as given in table 4.

Table 4 — Height of upper
Footwear size Height
Design A Design B Design C Design D
French English
mm mm mm mm
min. min. min.
36 and below Up to 3 ½ < 103 103 162 255
37 and 38 4 to 5 < 105 105 165 260
39 and 40 5 ½ to 6 ½ < 109 109 172 270
41 and 42 7 to 8 < 113 113 178 280
43 and 44 8 ½ to 10 < 117 117 185 290
45 and above 10 ½ and < 121 121 192 300
above
5.2.2 Seat region
The seat region shall be closed.
5.3 Whole footwear
5.3.1 Sole performance
5.3.1.1 Construction

When used an insole shall be present in such a way that it cannot be removed without damaging the footwear.

5.3.1.2 Upper/outsole bond strength

When footwear, other than with a stitched sole, is tested in accordance with the method described in

EN ISO 20344:2004, 5.2, the bond strength shall be not less than 4,0 N/mm, unless there is tearing of the sole,

in which case the bond strength shall be not less than 3,0 N/mm.
5.3.2 Leakproofness

When tested in accordance with EN ISO 20344:2004, 5.7, there shall be no leakage of air.

5.3.3 Specific ergonomic features

The footwear shall be considered to satisfy the ergonomic requirements if all the answers are positive in the

questionnaire given in EN ISO 20344:2004, 5.1.
---------------------- Page: 16 ----------------------
EN ISO 20347:2004 (E)
5.4 Upper
5.4.1 General

For designs B, C, D and E the area which shall fulfil the upper requirements shall have a minimum height

measured from the horizontal surface beneath the sole in accordance with table 5.

Table 5 — Minimum height below which the upper requirements shall be
completely fulfilled
Design
Size of footwear Minimum height
French English B C D E
36 and below up to 3 ½ 64 113 172 265
37 and 38 4 to 5 66 115 175 270
39 and 40 5 ½ to 6 ½ 68 119 182 280
41 and 42 7 to 8 70 123 188 290
43 and 44 8 ½ to 10 72 127 195 300
45 and above 10 ½ and above 73 131 202 310

When collar and insert materials are present above the heights given in table 5, such materials shall meet the

tear strength, 5.5.1, and abrasion resistance, 5.5.2, requirements for lining. In the case of leather materials

they shall meet in addition the requirements for the pH value, 5.4.7, and for the chromium VI content, 5.4.9.

5.4.2 Thickness

When determined in accordance with EN ISO 20344:2004, 6.1, the thickness of the upper of classification II

footwear at any point shall be in accordance with table 6.
Table 6 — Minimum thickness of upper
Type of material Minimum thickness
Rubber 1,50
Polymeric 1,00
---------------------- Page: 17 ----------------------
EN ISO 20347:2004 (E)
5.4.3 Tear strength

When determined in accordance with EN ISO 20344:2004, 6.3, the tear strength of the upper of classification I

footwear shall be in accordance with table 7.
Table 7 — Minimum tear strength of upper
Type of material Minimum force
Leather 120
Coated fabric and textile 60
5.4.4 Tensile properties

When determined in accordance with EN ISO 20344:2004, 6.4, table 7, the tensile properties shall be in

accordance with table 8.
Table 8 — Tensile properties
Type of material Tensile strength Breaking force Elongation at break
Modulus at 100 %
elongation
N/mm²
N/mm N %
Leather split 15 minimum — — —
Rubber — 180 minimum — —
Polymeric — — 1,3 to 4,6 250 minimum
5.4.5 Flexing resistance

When tested in accordance with EN ISO 20344:2004, 6.5, the flexing resistance shall be in accordance with

table 9.
Table 9 — Flexing resistance
Type of material Flexing resistance
Rubber No cracking before 125 000 flexes
Polymeric No cracking before 150 000 flexes
5.4.6 Water vapour permeability and coefficient

When tested in accordance with EN ISO 20344:2004, 6.6, and EN ISO 20344:2004, 6.8, the water vapour

permeability shall be not less than 0,8 mg/(cm ·h) and the water vapour coefficient shall be not less than

15 mg/cm .
5.4.7 pH value

When leather uppers are tested in accordance with EN ISO 20344:2004, 6.9, the pH value shall be not less

than 3,2 and, if the pH value is below 4, the difference figure shall be less than 0,7.

---------------------- Page: 18 ----------------------
EN ISO 20347:2004 (E)
5.4.8 Hydrolysis

When polyurethane uppers are tested in accordance with EN ISO 20344:2004, 6.10, no cracking shall occur

before 150 000 flex cycles.
5.4.9 Chromium VI content

When leather uppers are tested in accordance with EN ISO 20344:2004, 6.11, chromium VI shall not be

detectable.
5.5 Lining

NOTE The following requirements are applicable to vamp lining and quarter lining.

5.5.1 Tear strength

When determined in accordance with EN ISO 20344:2004, 6.3, the tear strength of the lining shall be in

accordance with table 10.
Table 10 — Minimum tear strength of lining
Type of material Minimum force in N
Leather 30
Coated fabric and textile 15
5.5.2 Abrasion resistance
When tested in accordance
...

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