EN ISO 15236-3:2007

SLOVENSKI STANDARD
01-maj-2008
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Steel cord conveyor belts - Part 3: Special safety requirements for belts for use in
underground installations (ISO 15236-3:2007)
Stahlseil-Fördergurte - Teil 3: Besondere Sicherheitsanforderungen für den Einsatz
untertage (ISO 15236-3:2007)
Courroies transporteuses a câbles d'acier - Partie 3: Exigences de sécurité particulieres
aux courroies utilisées dans des installations souterraines (ISO 15236-3:2007)
Ta slovenski standard je istoveten z: EN ISO 15236-3:2007
ICS:
53.040.20
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 15236-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2007
ICS 53.040.20
English Version
Steel cord conveyor belts - Part 3: Special safety requirements
for belts for use in underground installations (ISO 15236-3:2007)
Courroies transporteuses à câbles d'acier - Partie 3: Stahlseil-Fördergurte - Teil 3: Besondere
Exigences de sécurité particulières aux courroies utilisées Sicherheitsanforderungen für den Einsatz untertage (ISO
dans des installations souterraines (ISO 15236-3:2007) 15236-3:2007)
This European Standard was approved by CEN on 2 June 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
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EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15236-3:2007: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 15236-3:2007) has been prepared by Technical Committee CEN/TC
188 "Conveyor belts", the secretariat of which is held by BSI, in collaboration with Technical
Committee ISO/TC 41 "Pulleys and belts (including veebelts)".

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 January 2008, and conflicting national
standards shall be withdrawn at the latest by January 2008.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Bulgaria, 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.
INTERNATIONAL ISO
STANDARD 15236-3
First edition
2007-07-01
Steel cord conveyor belts —
Part 3:
Special safety requirements for belts for
use in underground installations
Courroies transporteuses à câbles d'acier —
Partie 3: Exigences de sécurité particulières aux courroies utilisées
dans des installations souterraines

Reference number
ISO 15236-3:2007(E)
©
ISO 2007
ISO 15236-3:2007(E)
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ii © ISO 2007 – All rights reserved

ISO 15236-3:2007(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Symbols and units. 3
5 Belt design. 4
6 Design and construction. 5
7 Mechanical requirements. 7
8 Sampling. 10
9 Designation . 11
10 Ordering data . 11
11 Marking . 12
Annex A (informative) Helpful information to be supplied by the purchaser . 13
Bibliography . 15

ISO 15236-3:2007(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 15236-3 was prepared by the European Committee for Standardization (CEN) in collaboration with
Technical Committee ISO/TC 41, Pulleys and belts (including veebelts), Subcommittee SC 3, Conveyor belts,
in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
ISO 15236 consists of the following parts, under the general title Steel cord conveyor belts:
⎯ Part 1: Design, dimensions and mechanical requirements for conveyor belts for general use
⎯ Part 2: Preferred belt types
⎯ Part 3: Special safety requirements for belts for use in underground installations
⎯ Part 4: Vulcanized belt joints

iv © ISO 2007 – All rights reserved

INTERNATIONAL STANDARD ISO 15236-3:2007(E)

Steel cord conveyor belts —
Part 3:
Special safety requirements for belts for use in underground
installations
1 Scope
This part of ISO 15236 specifies the performance and constructional requirements applicable to conveyor
belts for underground mining having steel cords in the longitudinal direction as reinforcement. The
requirements for design and construction apply to the design of single belts as well as the design of complete
type series such as those covered in ISO 15236-2.
Steel cord belts in accordance with this part of ISO 15236 are intended for use underground in coal mines and
in other applications where the highest demands for safety against fire and explosion hazards have to be
complied with.
NOTE At present the requirements can only be met by the use of compounds based on chloroprene rubber for the
covers as well as for the bonding rubber.
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.
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 703, Conveyor belts — Transverse flexibility (troughability) — Test method
ISO 4649:2002, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating
cylindrical drum device
ISO 7623, Steel cord conveyor belts — Cord-to-coating bond test — Initial test and after thermal treatment
ISO 8094, Steel cord conveyor belts — Adhesion strength test of the cover to the core layer
ISO 7590:2001, Steel cord conveyor belts — Methods for the determination of total thickness and cover
thickness
ISO 7622-2, Steel cord conveyor belts — Longitudinal traction test — Part 2: Measurement of tensile strength
ISO 2062, Textiles — Yarns from packages — Determination of single-end breaking force and elongation at
break
EN 13827, Steel cord conveyor belts — Determination of the lateral and vertical displacement of steel cords
EN 14973, Conveyor belts for use in underground installations — Electrical and flammability safety
requirements
ISO 15236-3:2007(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
edge width
b
k
thickness of rubber between the outer cord and the belt edge
See Figure 1.
3.2
breaker
transverse reinforcement in the conveyor belt, normally of a textile material, attached both above and below or
either above or below the layer of longitudinal cords at a distance of at least 1 mm and considered to be part
of the cover
See Figure 2.
NOTE Adapted from ISO 7590:2001, 2.1.
3.3
weft
transverse reinforcement in the conveyor belt, normally of steel wires, attached both above and below or
either above or below the layer of longitudinal cords at a distance of less than 1 mm and considered to be part
of the belt core
See Figure 3.
NOTE Adapted from ISO 7590:2001, 2.2.
2 © ISO 2007 – All rights reserved

ISO 15236-3:2007(E)
4 Symbols and units
See Table 1.
Table 1 — Symbols and units
Symbol Explanation Unit
B Belt width mm
F Pull-out force of cord per cord length N/mm
a
F Breaking strength of cord taken from cured belt kN
bs
F Pull-out force of cord per cord length — after thermal treatment N/mm
v
K Minimum (nominal) breaking strength per width of belt N/mm
N
b Calculated edge width mm
k
b Supporting belt width mm
t
d Cord diameter mm
e See Figure 4 mm
F Deflection (troughability) mm
h Median cord height according to EN 13827 mm
m
n Number of cords —
s Nominal belt thickness (see ISO 7590) mm
s Cover thickness carrying side mm
s Cover thickness pulley side mm
s Thickness of layer between breaker and layer of longitudinal cords mm
s Thickness of layer between weft and layer of longitudinal cords mm
s Thickness of belt core mm
t Cord spacing/pitch mm
∆h Number of cords positioned within a range of h u 1 mm as a percentage of the
1 m
%
total number of cords
∆h Number of cords positioned within a range of h of from > 1,0 mm to 1,5 mm and
2 m
%
expressed as a percentage of the total number of cords
∆h Percentage of cords with h > 1,5 mm %
3 m
ISO 15236-3:2007(E)
5 Belt design
5.1 Standard type
Conveyor belts conforming to this part of ISO 15236 contain steel cords surro
...