SIST EN ISO 28017:2012
(Main)Rubber hoses and hose assemblies, wire or textile reinforced, for dredging applications - Specification (ISO 28017:2011)
Rubber hoses and hose assemblies, wire or textile reinforced, for dredging applications - Specification (ISO 28017:2011)
This Standard specifies requirements for eight classes, three grades and six types of wire or textile reinforced dredging hose sizes ranging from 100 to 1 100. Each class has a single maximum working pressure for all sizes. They are suitable for use to transfer seawater, silt, sand, coral and small rock at the temperatures ranging from -10 °C to +40 °C.
Schläuche und Schlauchleitungen, Draht oder Textil verstärkt für den Nassbaggeranwendungen - Anforderungen (ISO 28017:2011)
Diese Internationale Norm legt Anforderungen für zwei Arten, sieben Klassen und drei Unterklassen von
Draht- oder Textilverstärkten Nassbaggerschläuchen mit einer Nennweite von 100 bis 1200 fest. Für alle
Klassen, alle Unterklassen und Größen gilt der gleiche maximale Betriebsdruck. Derartige Schläuche sind
geeignet für die Förderung oder das Ansaugen von Meerwasser oder Süßwasser vermischt mit Schlick,
Korallen und kleinen Steinen mit einer Dichte zwischen 1 und 2,3 bei Umgebungstemperaturen von -10 °C bis
zu +40 °C.
Diese Internationale Norm umfasst zwei Arten von Schläuchen, wie folgt:
Typ 1: Schwimmtyp, nur zur Förderung, welches Schwimmmaterial mit einbezieht das für den Auftrieb
des Schlauches sorgt;
Typ 2: Unterwassertyp zur Förderung und Ansaugung.
Diese Internationale Norm enthält keine Festlegungen zu Anforderungen in Bezug auf die betriebliche
Lebensdauer des Schlauches oder der Schlauchleitung. Solche Anforderungen festzulegen liegt in der
Verantwortung des Kunden in Absprache mit dem Schlauchhersteller.
Tuyaux et flexibles en caoutchouc, à armature textile ou métallique, pour des applications de dragage - Spécifications (ISO 28017:2011)
L'ISO 28017:2011 spécifie les exigences pour deux types, sept classes et trois qualités de tuyaux de dragage à armature métallique ou textile, de dimensions nominales allant de 100 à 1 200. Dans chaque classe, toutes les qualités et dimensions ont la même pression maximale de service. Ces tuyaux sont adaptés pour le refoulement ou l'aspiration d'eau de mer ou d'eau douce mélangée à du limon, du sable, des coraux et de petites pierres ayant une densité de 1,0 à 2,3 à des températures ambiantes comprises entre -10 °C et +40 °C.
L'ISO 28017:2011 traite les deux types de tuyaux suivants:
type 1: type flottant, pour le refoulement uniquement, incluant un matériau de flottaison permettant au tuyau de flotter;
type 2: type sous-marin, pour le refoulement ou l'aspiration.
L'ISO 28017:2011 ne spécifie pas d'exigences concernant la durée de vie des tuyaux ou des assemblages flexibles. La spécification de ce type d'exigences relève de la responsabilité du client, en concertation avec le fabricant de tuyaux.
Gumene cevi in cevni priključki, ojačeni z žicami ali tekstilom, za uporabo v vodnem bagru - Zahteve (ISO 28017:2011)
Ta mednarodni standard določa zahteve za dve vrsti, sedem razredov in tri tipe cevi za črpanje vode z nazivno velikostjo od 100 do 1200. Znotraj vsakega razreda imajo vsi tipi in velikosti enak najvišji delovni tlak. Take cevi so primerne za dostavo ali sesanje morske ali sladke vode, pomešane z ilovico, peskom, koralami in kamenčki s specifično težnostjo med 1,0 in 2,3 pri temperaturi okolja od –10 °C to +40 °C. Ta mednarodni standard zajema dva tipa cevi, kot sledi: – tip 1: lebdeči tip, namenjen le dostavi, ki vključuje plavajoč material, zaradi katerega cev ne potone; – tip 2: podvodni tip za dostavo in sesanje. Ta mednarodni standard ne določa zahtev v zvezi z življenjsko dobo cevi ali sestavo cevi. Te zahteve mora določiti stranka ob posvetovanju s proizvajalcem cevi.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 28017:2012
01-marec-2012
*XPHQHFHYLLQFHYQLSULNOMXþNLRMDþHQL]åLFDPLDOLWHNVWLORP]DXSRUDERY
YRGQHPEDJUX=DKWHYH ,62
Rubber hoses and hose assemblies, wire or textile reinforced, for dredging applications -
Specification (ISO 28017:2011)
Schläuche und Schlauchleitungen, Draht oder Textil verstärkt für den
Nassbaggeranwendungen - Anforderungen (ISO 28017:2011)
Tuyaux et flexibles en caoutchouc, à armature textile ou métallique, pour des
applications de dragage - Spécifications (ISO 28017:2011)
Ta slovenski standard je istoveten z: EN ISO 28017:2011
ICS:
83.140.40 Gumene cevi Hoses
SIST EN ISO 28017:2012 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 28017:2012
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SIST EN ISO 28017:2012
EUROPEAN STANDARD
EN ISO 28017
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2011
ICS 83.140.40
English Version
Rubber hoses and hose assemblies, wire or textile reinforced,
for dredging applications - Specification (ISO 28017:2011)
Tuyaux et flexibles en caoutchouc, à armature textile ou Gummischläuche und Schlauchleitungen, Draht- oder
métallique, pour des applications de dragage - Textilverstärkt, für Nassbaggeranwendungen - Anforderung
Spécifications (ISO 28017:2011) (ISO 28017:2011)
This European Standard was approved by CEN on 14 November 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, 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
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 28017:2011: E
worldwide for CEN national Members.
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SIST EN ISO 28017:2012
EN ISO 28017:2011 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 28017:2012
EN ISO 28017:2011 (E)
Foreword
This document (EN ISO 28017:2011) has been prepared by Technical Committee ISO/TC 45 "Rubber and
rubber products" in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and
hose assemblies” the secretariat of which is held by BSI.
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 May 2012, and conflicting national standards shall be withdrawn at the
latest by May 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 28017:2011 has been approved by CEN as a EN ISO 28017:2011 without any modification.
3
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SIST EN ISO 28017:2012
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SIST EN ISO 28017:2012
INTERNATIONAL ISO
STANDARD 28017
Second edition
2011-11-15
Rubber hoses and hose assemblies,
wire or textile reinforced, for dredging
applications — Specification
Tuyaux et flexibles en caoutchouc, à armature textile ou métallique,
pour des applications de dragage — Spécifications
Reference number
ISO 28017:2011(E)
©
ISO 2011
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
4.1 Classes . 2
4.2 Grades . 2
5 Materials and construction . 3
5.1 Hoses . 3
5.2 Flotation material . 4
5.3 End fittings and end connections . 4
6 Dimension and tolerances . 4
6.1 Diameters . 4
6.2 Hose assembly length . 4
7 Physical properties . 5
7.1 Rubber compounds . 5
7.2 Performance requirements . 6
7.3 Frequency of testing . 9
8 Test certificate or report .10
9 Marking .10
10 Recommendations for packaging and storage .10
Annex A (normative) Type tests and routine tests . 11
Annex B (normative) Measurement of adhesion between end fitting and lining .12
Annex C (normative) Hose assembly tensile-strength test .15
© ISO 2011 – All rights reserved iii
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SIST EN ISO 28017:2012
ISO 28017:2011(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 28017 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Hoses (rubber and plastics).
This second edition cancels and replaces the first edition (ISO 28017:2009), which has been technically revised.
The main changes are the following:
— 5.1: minimum lining thicknesses have been specified for hoses of different nominal sizes;
— 5.2: additional requirements have been specified for flotation materials;
— Clause 6: tighter tolerances have been specified for the inside diameters of all nominal sizes;
— 7.1.2: requirements have been included for the tear strength of the hose lining;
— 7.1.3: requirements have been included for the rebound resilience properties of the hose lining;
— 7.2.5: the requirements concerning minimum reserve buoyancy have been made clearer;
— 7.2.6: the flotation material recovery test procedure has been made clearer;
— 7.2.9: requirements have been included for the minimum tensile strength of empty hose assemblies;
— 7.3: a more detailed description of type test requirements has been given;
— Annex A: a tear strength test and a rebound resilience test of the lining compound have been included, as
well as a tensile-strength test on empty hose assemblies;
— a new annex (Annex C) specifying a tensile-strength test has been added.
iv © ISO 2011 – All rights reserved
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SIST EN ISO 28017:2012
INTERNATIONAL STANDARD ISO 28017:2011(E)
Rubber hoses and hose assemblies, wire or textile reinforced,
for dredging applications — Specification
1 Scope
This International Standard specifies requirements for two types, seven classes and three grades of wire- or
textile-reinforced dredging hoses with nominal sizes ranging from 100 to 1 200. Within each class, all grades
and sizes have the same maximum working pressure. Such hoses are suitable for the delivery or suction of
seawater or freshwater mixed with silt, sand, coral and small stones with a specific gravity in the range from 1,0
to 2,3 at ambient temperatures ranging from -10 °C to +40 °C.
This International Standard covers two types of hose, as follows:
— type 1: floating type, for delivery only, which includes flotation material to give the hose buoyancy;
— type 2: submarine type for delivery and suction.
This International Standard does not specify requirements concerning the service life of hoses or hose
assemblies. Specifying such requirements is the responsibility of the customer, in consultation with the hose
manufacturer.
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 34-1:2010, Rubber, vulcanized or thermoplastic — Determination of tear strength — Part 1: Trouser, angle
and crescent test pieces
ISO 34-2:2011, Rubber, vulcanized or thermoplastic — Determination of tear strength — Part 2: Small (Delft)
test pieces
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and dynamic
strain testing
ISO 4649:2010, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating
cylindrical drum device
ISO 4662:2009, Rubber, vulcanized or thermoplastic — Determination of rebound resilience
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of
hoses and the lengths of hose assemblies
ISO 7233:2006, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum
ISO 8033, Rubber and plastics hoses — Determination of adhesion between components
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 8331, Rubber and plastics hoses and hose assemblies — Guidelines for selection, storage, use and
maintenance
ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:
Bending tests at ambient temperature
© ISO 2011 – All rights reserved 1
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
4 Classification
4.1 Classes
Seven classes of hose are specified, distinguished by their maximum working pressure, of nominal sizes from
100 to 1 200, as shown in Table 1.
Table 1 — Classes and corresponding maximum working pressures and nominal sizes
Class
5 10 15 20 25 30 40
Maximum working pressure, MWP
Nominal size bar
5 10 15 20 25 30 40
MPa
0,5 1,0 1,5 2,0 2,5 3,0 4,0
100 X X X X X X X
150 X X X X X X X
200 X X X X X X X
250 X X X X X X N/A
300 X X X X X X N/A
350 X X X X X X N/A
400 X X X X X X N/A
450 X X X X X X N/A
500 X X X X X X N/A
550 X X X X X X N/A
600 X X X X X X N/A
650 X X X X X X N/A
700 X X X X X X N/A
750 X X X X X X N/A
800 X X X X X X N/A
850 X X X X X X N/A
900 X X X X X X N/A
1 000 X X X X X X N/A
1 100 X X X X X X N/A
1 200 X X X X X N/A N/A
NOTE X = Applicable, N/A = Not applicable.
4.2 Grades
Type 2 hoses are classified into three grades, A, B and C, according to their construction (number of reinforcing
helical wires), as shown in Table 2.
Type 1 hoses are not divided into grades.
2 © ISO 2011 – All rights reserved
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
Table 2 — Grades
Construction and purpose
Type Grade
Number of reinforcing wires Purpose
1 — 0 Delivery only
A 2 Delivery or suction
2 B 1 Delivery or suction
C 0 Delivery only
The types and grades available in each class (i.e. for each maximum working pressure) are as shown in
Table 3.
Table 3 — Types and grades available in each class
Class
5 10 15 20 25 30 40
Maximum working pressure, MWP
Type Grade bar
5 10 15 20 25 30 40
MPa
0,5 1,0 1,5 2,0 2,5 3,0 4,0
1 — X X X X X X X
A X X X N/A N/A N/A N/A
2 B X X X N/A N/A N/A N/A
C X X X X X X X
NOTE X = Applicable, N/A = Not applicable.
5 Materials and construction
5.1 Hoses
Type 1 hose assemblies shall consist of an abrasion-resistant rubber lining, one or more layers of steel or
textile reinforcement, a textile-reinforced rubber undercover, a flexible closed-cell flotation material integrally
fitted round the hose body as described in 5.2, an abrasion- and weather-resistant rubber or thermoplastic
outer cover (which, in the case of a rubber cover, may include one or two textile breaker layers), and end fittings
as described in 5.3 on both ends.
Type 2 hose assemblies shall consist of an abrasion-resistant rubber lining, one or more layers of steel or
textile reinforcement, a textile-reinforced rubber, full rubber or thermoplastic cover at least 6 mm thick for hoses
of nominal size less than 500, at least 10 mm thick for hoses of nominal size in the range from 500 to 850
inclusive and at least 12 mm thick for hoses of nominal size in the range from 900 to 1 200 inclusive, and end
fittings as described in 5.3 on both ends. The lining thickness shall be at least 8 mm for nominal sizes up to and
including 200, at least 10 mm for nominal sizes 250 to 500 inclusive, at least 12 mm for nominal sizes 550 to
800 inclusive and at least 16 mm for nominal sizes 850 to 1 200 inclusive.
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
5.2 Flotation material
The closed-cell flotation material used in type 1 hose assemblies shall adhere firmly both to the hose body
and to the outer cover so that it cannot move or tend to become detached in service. At the ends of the hose,
a space shall be provided to facilitate the insertion of connection bolts and to allow the use of mechanical tools
for tightening nuts on the bolts. The flotation material shall be distributed over the whole length of the hose
assembly in such a manner that the hose assembly floats evenly when connected to other assemblies in a
string. This does not apply to hose assemblies for special applications (e.g. the end of a string, tapered hose,
etc.).
5.3 End fittings and end connections
End fittings shall be mechanically and chemically bonded to the hose body. With hoses intended for delivery
use only, clamped-on and swaged-on nipples are not acceptable, but such nipples may be utilized with hoses
intended for suction use. Alternatively, flanged end connections built up of hose reinforcement, lining and cover
material are acceptable provided they are additionally reinforced by steel stiffening rings to avoid distortion
when the connection bolts are tightened. All hose assemblies shall be fitted with either end fittings or flanged
end connections unless otherwise required by the end user.
6 Dimension and tolerances
6.1 Diameters
When measured in accordance with ISO 4671, the inside diameters of hoses shall conform to the values given
in Table 4.
When measured in accordance with ISO 4671, the outside diameters of hoses shall conform to the values
specified by the customer.
NOTE For hoses manufactured on mandrels with diameters in inches, the tolerances on the inside diameter are the
same as those given for hoses with diameters in metric units in Table 4 (i.e. ±3 mm for sizes 4 in to 8 in inclusive, ±4 mm
for 10 in to 12 in inclusive, ±5 mm for 14 in to 30 in inclusive, ±6 mm for 32 in to 40 in inclusive and ±7 mm for 44 in and
48 in).
6.2 Hose assembly length
The hose assembly length shall be determined according to the conditions of use. Unless otherwise agreed
between the customer and the manufacturer, the tolerances on the hose assembly length shall be +2 % and
-2 %.
4 © ISO 2011 – All rights reserved
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
Table 4 — Diameters of hoses
Actual inside diameter
Nominal size mm
min. max.
100 97 103
150 147 153
200 197 203
250 246 254
300 296 304
350 345 355
400 395 405
450 445 455
500 495 505
550 545 555
600 595 605
650 645 655
700 695 705
750 745 755
800 794 806
850 844 856
900 894 906
1 000 994 1 006
1 100 1 093 1 107
1 200 1 193 1 207
7 Physical properties
7.1 Rubber compounds
7.1.1 Abrasion resistance of lining
7.1.1.1 Test pieces
Test pieces shall be prepared from sheets of lining compound (of cure state equivalent to that of the hose) of
thickness at least 6 mm. The method of preparation shall be as specified in ISO 4649.
7.1.1.2 Abrasion resistance
When the test is carried out in accordance with ISO 4649:2010, method A, the relative volume loss ΔV shall
rel
3
not be greater than 200 mm . This test is required each time type testing is carried out and when a change in
lining compound is made, and shall be regularly repeated in accordance with the manufacturer’s quality control
procedures.
7.1.2 Tear strength of lining
When tested in accordance with ISO 34-2:2011, measuring the test pieces in accordance with method 2
(Subclause 6.2.2.3), the tear strength F shall be greater than 35 N. This test is required for each batch of
0
lining compound (which might be used to manufacture more than one hose). Alternatively, the tear strength of
© ISO 2011 – All rights reserved 5
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
the lining may be determined in accordance with ISO 34-1:2010, method B, procedure (b), in which case the
minimum required value is 35 kN/m.
7.1.3 Rebound resilience of lining
For certain slurries containing a large quantity of sharp gravel, broken rocks or coral, the hose user might
require a lining with high rebound resilience properties. In this case, the lining compound shall be tested for
rebound resilience in accordance with ISO 4662:2009, Clause 5 (the pendulum method). A recommended
minimum rebound resilience value is 35 %.
7.1.4 Ozone resistance of cover
7.1.4.1 Test pieces
Test pieces shall be prepared from sheets of cover compound (of cure state equivalent to that of the hose) of
thickness at least 2 mm. The method of preparation shall be as specified in ISO 1431-1. For type 1 hoses, it is
the compound from which the outer cover (that surrounds the flotation material) is made which is tested.
7.1.4.2 Ozone resistance
When the test is carried out in accordance with ISO 1431-1, no cracking or other deterioration of the test pieces
shall be visible under × 2 magnification after 72 h at 40 °C and 20 % strain in 50 pphm ozone. This test is
required each time type testing is carried out and shall be repeated whenever a change in compound is made
and regularly afterwards when required by the manufacturer’s quality control procedures.
7.2 Performance requirements
7.2.1 Hydrostatic requirements
When determined in accordance with ISO 1402, the proof pressure and the minimum burst pressure of hoses
and hose assemblies shall conform to the values given in Table 5.
The theoretical minimum burst pressure for each hose assembly of each design in a manufacturer’s range shall
be calculated and included in the manufacturer’s sales documentation for the information of potential users.
Burst testing shall be carried out on a mid-range or larger nominal size of each design in the manufacturer’s
range. The minimum burst pressure of other sizes of the same design, construction (with a reinforcement
type identical to that of the hose assembly tested but not necessarily the same number of plies), materials
and method of manufacture shall be determined by calculation. However, this is an acceptable method only if
calculation, before testing, of the burst pressure of the hose assembly tested gives a result which is not more
than 5 % higher than the actual measured burst pressure. If the calculated burst pressure is more than 5 %
higher, the minimum burst pressure of all other sizes in the range shall be determined by testing.
For type 1 hoses, the burst test shall be carried out on a hose assembly without its flotation material.
7.2.2 Change in length
When determined in accordance with ISO 1402, the change in length of the hose at the maximum working
pressure shall not exceed +11 % or -2 %.
6 © ISO 2011 – All rights reserved
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
Table 5 — Maximum working pressure, proof pressure and minimum burst pressure
Maximum Proof pressure Minimum burst pressure
working
Class Type 1 Type 2 Type 1 Type 2
pressure
MPa (bar) MPa (bar) MPa (bar) MPa (bar) MPa (bar)
5 0,5 (5) 0,5 (5) 0,5 (5) 1,5 (15) 1,5 (15)
10 1,0 (10) 1,0 (10) 1,0 (10) 3,0 (30) 3,0 (30)
15 1,5 (15) 1,5 (15) 1,5 (15) 4,5 (45) 4,5 (45)
20 2,0 (20) 2,0 (20) 2,0 (20) 6,0 (60) 6,0 (60)
25 2,5 (25) 2,5 (25) 2,5 (25) 7,5 (75) 7,5 (75)
30 3,0 (30) 3,0 (30) 3,0 (30) 9,0 (90) 9,0 (90)
40 4,0 (40) 4,0 (40) 4,0 (40) 12,0 (120) 12,0 (120)
7.2.3 Bending test
When bent to the minimum bend radius given in Table 6, in accordance with one of the methods specified in
ISO 10619-1 (use the method most appropriate to the size of hose), hoses shall show no damage or kinking.
In addition, the coefficient of deformation T/D shall not be lower than 0,95.
The difference in minimum bend radii for identical nominal sizes between the various grades depends on the
number of helical reinforcing wires in the construction.
7.2.4 Leakage of hose assemblies (proof pressure test)
When tested in accordance with ISO 1402, hose assemblies shall show no leakage or other evidence of failure
at the proof pressure.
7.2.5 Minimum reserve buoyancy
Type 1 hoses shall have a minimum reserve buoyancy of 5 % when the hose, including the flotation material
and outer cover, is fully immersed in seawater or fresh water and filled with a mixture of water and solids
representative of that which will be conveyed through the hose during dredging operations. The specific gravity
of this mixture shall be supplied by the customer.
The reserve buoyancy B , in percent, is calculated from the following equation:
r
m − (m +m )
D H W
B = ×100
r
m +m
H W
where
m is the mass of seawater or fresh water displaced by the hose when fully submerged, including the
D
seawater or fresh water displaced by the flotation material and the seawater or fresh water inside
the hose bore;
m is the mass of the empty hose, including the flotation material, in air;
H
m is the mass of the mixture of seawater or fresh water and solids inside the hose bore during
W
dredging operations, the specific gravity of which shall be supplied by the customer.
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
Table 6 — Minimum bend radius
Minimum bend radius
mm
Nominal size
Type 1 Type 2
— Grade A Grade B Grade C
100 600 500 800 1 200
150 900 750 1 200 1 800
200 1 200 1 000 1 600 2 400
250 1 500 1 250 2 000 3 000
300 1 800 1 500 2 400 3 600
350 2 100 1 750 2 800 4 200
400 2 400 2 000 3 200 4 800
450 2 700 2 250 3 600 5 400
500 3 000 2 500 4 000 6 000
550 3 300 2 750 4 400 6 600
600 3 600 3 000 4 800 7 200
650 3 900 3 250 5 200 7 800
700 4 200 3 500 5 600 8 400
750 4 500 3 750 6 000 9 000
800 4 800 4 000 6 400 9 600
850 5 100 4 250 6 800 10 200
900 5 400 4 500 7 200 10 800
1 000 6 000 — — —
1 100 6 600 — — —
1 200 7 200 — — —
7.2.6 Flotation material recovery
The nature and structure of the flotation material used for a type 1 hose shall be such that the maximum loss
in reserve buoyancy after immersing the flotation material at 10 m water depth for 24 h, followed by a recovery
period also of 24 h, is 8 % for nominal sizes from 100 to 700 and 5 % for sizes from 750 to 1 200. This test is
carried out without fittings.
The reserve buoyancy is calculated using the equation in 7.2.5.
The loss in reserve buoyancy ΔB, in percent, is calculated from the following equation:
B −B
R 0
ΔB = ×100
B
0
where
B is the reserve buoyancy before immersion (%);
0
B is the reserve buoyancy after immersion (%).
R
This test may be performed on a sample of flotation material, fully covered by the same type of outer cover as
the hose. The reserve buoyancy of the hose after immersion for 24 h at 10 m water depth can be calculated
from the results of the test. This test is required for type testing only.
8 © ISO 2011 – All rights reserved
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SIST EN ISO 28017:2012
ISO 28017:2011(E)
7.2.7 Adhesion between components
When determined in accordance with ISO 8033, the adhesion between the lining and reinforcement, between
different reinforcement layers and between the cover and reinforcement shall not be less
...
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