oSIST prEN 1829-2:2005
High-pressure cleaners, high-pressure water jet machines - Safety requirements - Part 2: Hoses lines and connecting elements
High-pressure cleaners, high-pressure water jet machines - Safety requirements - Part 2: Hoses lines and connecting elements
This standard defines requirements, test procedures and markings for hoses, hose lines and connecting elements for the use with high-pressure cleaners, high-pressure water jet machines and water jet cutting machines according to EN 1829-1 with a permissible pressure from 250 ° bar to 2.500 bar. High-pressure cleaners, high-pressure water jet machines and water jet cutting machines are herinafter referred to as high-pressure water jet machines.
Visokotlačni čistilniki – Visokotlačni stroji z vodnim curkom – Varnostne zahteve – 2. del: Cevi, cevne napeljave in cevne spojke za visokotlačne čistilnike, visokotlačne stroje z vodnim curkom in rezalne stroje z vodnim curkom ter tudi varnostne naprave za cevne spojke
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 1829-2:2005
01-oktober-2005
9LVRNRWODþQLþLVWLOQLNL±9LVRNRWODþQLVWURML]YRGQLPFXUNRP±9DUQRVWQH]DKWHYH±
GHO &HYLFHYQHQDSHOMDYHLQFHYQHVSRMNH]DYLVRNRWODþQHþLVWLOQLNH
YLVRNRWODþQHVWURMH]YRGQLPFXUNRPLQUH]DOQHVWURMH]YRGQLPFXUNRPWHUWXGL
YDUQRVWQHQDSUDYH]DFHYQHVSRMNH
High-pressure cleaners, high-pressure water jet machines - Safety requirements - Part 2:
Hoses lines and connecting elements
Ta slovenski standard je istoveten z: prEN 1829-2
ICS:
97.080 Aparati za nego tal Floor treatment appliances
oSIST prEN 1829-2:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 1829-2:2005
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oSIST prEN 1829-2:2005
EUROPEAN STANDARD
DRAFT
prEN 1829-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2005
ICS
English version
High-pressure Cleaners - High-pressure water jet machines -
Safety requirements - Part 2: Hoses, hose lines and joints for
high-pressure cleaners, high-pressure water jet machines and
water jet cutters as well as safety devices to safeguard joints for
hose lines
Nettoyeurs haute pression - Machines à jet d'eau à haute Hochdruckreiniger - Hochdruckwasserstrahlmaschinen -
pression - Prescriptions de sécurité - Partie 2 : Tuyauteries Sicherheitstechnische Anforderungen - Teil 2: Schläuche,
et éléments de raccordement Schlauchleitungen und Verbindungselemente für
Hochdruckreiniger, Hochdruckwasserstrahlmaschinen und
Wasserstrahlschneideanlagen sowie
Sicherungseinrichtungen zur Sicherung aller
Schlauchleitungsverbindungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 197.
If this draft becomes a European Standard, 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.
This draft European Standard 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 Management Centre 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.
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: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1829-2:2005: E
worldwide for CEN national Members.
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prEN 1829-2:2005 (E)
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 List of hazards.8
5 Requirements.9
6 Test methods.11
7 Information for usage.15
Annex A (informative) Details for Pulse Test.17
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Foreword
This document (prEN 1829-2:2005) has been prepared by Technical Committee CEN/TC 197 “Pumps”, the
secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
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.
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Introduction
This European Standard has been prepared to be a harmonised standard to provide one means of conforming
with the essential safety requirements of the 98/37/EC Directive (“Machinery”) and associated EFTA
Regulations.
Any machinery affected by this Standard may have pressurized components which are subject to the
97/23/EC Directive for ”Pressure Parts“, such as hose lines exceeding a nominal diameter of 32 mm. Such
components are subject to the additional regulations of the 97/23/EC Directive ("Pressure Part Directive").
This European Standard is a C-type standard in accordance with EN 1070.
When provisions of this type C standard are different from those, which are stated in type A or B standards,
the provisions of this type C standard take precedence over the provisions of the other standards, for
machines that have been designed and built according to the provisions of this type C standard
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1 Scope
This European Standard contains the safety-related requirements, testing procedures, and markings for hoses,
hose lines, and connectors as well as for safety mechanisms applied to interconnect lines and to safeguard
the connections from the pressure generator to the spraying device on hose lines for the application of high-
pressure cleaners, high-pressure water jet machines, and water jet cutters in accordance with EN 1829, part 1,
in which the maximum allowable working pressure is more than 250 bar.
All references to high pressure water jet machines within this European Standard shall also include high
pressure cleaners. The word "spray" is used for spraying as well as for cutting procedures.
For machines of similar application that are outside of the scope of this European Standard and for which
there is no alternative European Standard available, the relevant clauses of this European Standard may be
used where applicable.
The high pressure water jet machines treated by this standard are mainly intended for use in industrial
applications such as:
- Cleaning
- Readjustment of concrete
- Cutting applications
This European Standard does not apply to high pressure water jet machines which are dealt with in EN
60335-2-54 and EN 60335-2-79.
This European Standard deals with technical safety requirements to minimise the hazards listed in clause 4
which can arise from constructing, assembling, erecting, operating and servicing of high pressure water jet
machines.
This European Standard does not cover specific situations where high pressure water jet machines are
incorporated within other installations.
This European Standard does not cover specific hazards associated with explosive atmospheres, use on
ships or specific temperatures (less than 5 °C or higher than 40 °C).
Any hazard due to the nature of fluid other than that due to pressure is excluded from the scope of this
standard.
This European Standard applies to high pressure water jet machines that were manufactured/introduced to
the market after the date of publication of this standard.
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 563:1994 Safety of machinery – temperatures of accessible surfaces – ergonomic data to
determine thermal limits for hot surfaces.
EN 775 Safety of industrial robots.
EN 954-1 Safety of machinery – safety-related parts of control systems - part 1: general
principles of design.
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EN 1070 Safety of machinery – terminology.
EN 60335-2-54 Safety of household and similar electrical appliances - part 2: particular
requirements for surface-cleaning appliances employing liquids.
EN 60335-2-79 Safety of household and similar electrical appliances - part 2: particular
requirements for high-pressure cleaners and steam cleaners for industrial and
commercial applications.
EN ISO 12100-1 Safety of machinery - Basic concepts, general principles for design - Part 1: Basic
terminology, methodology
EN ISO 12100-2 Safety of machinery - Basic concepts, general principles for design - Part 2:
Technical principles
ISO 3864 Safety colours and safety signs.
3 Terms and definitions
For the purpose of this document the usual arrangement of items within the scope of this European Standard
are shown, for illustrative purposes only, in Figure 1.
Key:
1 – Pressure generator
2 – Fixing device (Whip restraint)
3 – Connector
4 – Safety mechanism for connectors
5 – Safety mechanism operator spray shield
Figure 1
For the purpose of this document, the following terms and definitions shall apply:
3.1
High pressure water jet machine
A machine with nozzle or other variable opening which allow water with high pressure (greater than 250 bar)
together with any additive (chemical and/or abrasive) to emerge as a free jet
NOTE: In general, high pressure water jet machines consist of a driver, a pressure generator, pipelines, hose lines,
spraying devices, safety mechanisms, control and measurement devices.
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3.2
Programme controlled high pressure water jet machines
Those are characterised by spatial separation of the installation site of the pressure generator and the
workplace, by permanently installed high pressure lines between the installation site and the workplace with
one or more connection sites for spraying devices as well as by a start-up of the system by means of external
switching mechanisms.
NOTE: In this context, the actuating mechanism is not regarded as an operating mechanism.
3.3
High pressure line
Describes a pipeline or hose line used to feed pressurized water from the pressure generator to the spraying
device.
3.4
Pipelines
Pipes which are permanently fixed and operationally connected to suitable pipe fittings or valves.
3.5
Hoses
In accordance with the scope of this standard hoses are flexible, tubular semi finished products that are
designed from one or several layers and fitted with inserts that accommodate hose fittings.
3.6
Hose lines
A hose line is an operational hose which has been connected with appropriate hose fittings.
3.7
Spraying device
A device to yield a liquid stream.
NOTE: A spraying device usually consists of an actuating unit, a spraying pipe / an extension pipe / nozzle pipe as
well as the nozzle. This also includes a foot switch, foot valves with hose lines and spraying lances, spraying heads, and
nozzle mounts.
3.8
Rated outlet pressure
The pressure that occurs at the pressure generator at a certain volume flow with the appropriate nozzle.
3.9
Maximum allowable working pressure
The maximum pressure up to which the machine is functional and at which the machine may safely be run.
3.10
Bursting pressure
Static pressure that destroys the hose and allows the liquid escape.
3.11
Hose test pressure
Pressure applied to test a hose under certain test conditions.
3.12
Operating temperature of the liquid
The temperature of the liquid at any specified point.
3.13
Pulsation damper
A device to damp pressure pulsation.
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3.14
Interconnected hose lines
Several hose lines which have been connected with each other.
3.15
Connector
Hose fittings and components applied to connect hose lines.
3.16
Safety mechanism
1 Part or component of a hose line to restrain axial tensile forces from the hose line to the pressure
generator or to the spraying device or from one hose line to another if the fitting has accidentally come off or
has unintentionally been torn off (e.g. by use of a locking collar, hose sleeve, etc.).
2 A shield to protect the operator from spray if a leak occurs close to a hand held spraying device.
3.17
Fixing device (Whip restraint)
Part or interconnected parts to transmit the reactive forces released when the hose line has come off
accidentally or has been torn off unintentionally and would otherwise act like a whip.
4 List of hazards
4.1 General
This clause contains all the significant hazards, hazardous situations and events, as far as they are dealt
within this standard, identified by risk assessment as significant for this type of machinery and which requires
action to eliminate or reduce the risk.
4.2 Hazards due to bursting or leaking of hose lines
Hazard can occur when a hose line bursts or leaks, The escaping stream of liquid can cause physical damage,
and also cause a sudden repositioning of the hose line in a dangerous manner.
The hazard due to scalding from hot liquid, or from irritation / burning of any added chemicals is not covered in
this European Standard.
4.3 Hazards due to a hot medium inside the hose line
Hazardous situations can occur when the hot surface of a hose line is touched (burns).
4.4 Hazards due to hose line repositioning
Hazardous situations can also occur when the operator loses their firm hold and when there is a loss of
operational control due to extreme movements of the hose line (whip).
4.5 Hazards due to failure of connectors and components used to connect hose lines
Hazardous situations can occur when connectors between two hose lines come off, fracture, or are torn off
and cause a spray of liquid and / or the hose line to flap like a whip.
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4.6 Hazards due to poor connection between the safety mechanism and the hose line
Hazardous situations can occur when the hose line has come off accidentally or when the connector has been
torn off unintentionally and the subsequent failure of a safety mechanism or it’s fixing to the hose line
malfunction.
Note This is a second level failure and the probability is very small.
4.7 Hazards due to a failure of the fixing device
Hazardous situations can occur when the hose line comes off accidentally or when the hose line has been
torn off unintentionally and failure of the fixing device (e.g. fracture of the device, accidental disengaging,
missing safeguard against accidental disengaging).
Note This is a second level failure and the probability is very small.
5 Requirements
5.1 General requirements
Hoses, hose lines, and connectors have to feature a certain structure in order to guarantee safe operation
when used properly. They must not bear any risks for the operator or for the workplace and its environment.
However, improper use of a hose line or the connectors may result in hazardous situations and must be
avoided.
The hoses, connectors and fittings combined to hose lines have to match each other in terms of structure,
composition, and design.
The design of any safety mechanisms to protect interconnected hose lines and to safeguard spraying device
connections and pressure generator connections of hose lines has to provide safe operational performance to
eliminate any risk or hazard for the operator or their environment. However, improper use of a hose line or the
connectors may result in hazardous situations and must be avoided.
5.2 Mechanical requirements
All components of a hose line as well as the particular connectors shall be capable of withstanding at least the
hose test pressure
5.3 Requirements concerning the maximum allowable working pressure for the hose line
The maximum allowable working pressure shall not exceed 40% of the minimum bursting pressure of the
particular parts and devices.
5.4 Thermal requirements
The design of the hose lines connectors and fittings shall comply with the regulations as stated in EN 563
concerning the workplace when subjected to the maximum operating temperature of the liquid.
None of the parts of the hose line and connections that can be touched during normal operation shall exceed
the temperature limits of Table 1.
If the temperature of other surfaces can exceed the values in Table 1 during normal operation, measures
should be taken to reduce the risk of contacting such surfaces. If this is not possible then warnings to the user
/ operator shall be given.
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Contact time with hose and fittings respectively
Material 0,5 sec 1 min 10 min
T , °C T , °C T , °C
O O O
Uncoated metals 67 … 73 51 48
Coated metals
51 48
Lacquer, 50 … 150 µm, ∆T , °C
O
80 … 104
Powder, 60 … 90 µm, ∆T , °C
O
73 … 84
Enamel, 160 µm, ∆
...
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