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SIST EN 909:1999+A1:2009
01-november-2009
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Agricultural and forestry machinery - Centre pivot and moving lateral types irrigation
machines - Safety
Land- und Forstwirtschaftliche Maschinen - Kreis- und Linearberegnungsmaschinen -
Sicherheit
Matériel agricole et forestier - Machines à irriguer types pivot et rampes frontales -
Sécurité
Ta slovenski standard je istoveten z: EN 909:1998+A1:2009
ICS:
65.060.35 Namakalna in drenažna Irrigation and drainage
oprema equipment
SIST EN 909:1999+A1:2009 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 909:1999+A1:2009
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SIST EN 909:1999+A1:2009
EUROPEAN STANDARD
EN 909:1998+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2009
ICS 65.060.35 Supersedes EN 909:1998
English Version
Agricultural and forestry machinery - Centre pivot and moving
lateral types irrigation machines - Safety
Matériel agricole et forestier - Machines à irriguer types Land- und Forstwirtschaftliche Maschinen - Kreis- und
pivot et rampes frontales - Sécurité Linearberegnungsmaschinen - Sicherheit
This European Standard was approved by CEN on 28 November 1998 and includes Amendment 1 approved by CEN on 23 May 2009.
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
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 909:1998+A1:2009: E
worldwide for CEN national Members.
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SIST EN 909:1999+A1:2009
EN 909:1998+A1:2009 (E)
Contents Page
Foreword .3
Introduction .4
1 Scope .4
2 Normative references .4
3 Definitions .5
4 Requirements .5
4.1 General .5
4.2 Starting control .5
4.3 Stopping devices in plot limits .6
4.4 Alignment – guiding .6
4.5 Stability .6
4.5.1 Pivot point .6
4.5.2 Span .6
4.5.3 Overhang .6
4.5.4 Structure .7
4.6 Power supply .7
4.6.1 General .7
4.6.2 Level of protection (according to EN 60529) .7
4.6.3 Movable machines .7
4.7 Filters .7
5 Verification of safety requirements and/or measures .8
6 Information for use .8
6.1 Instruction handbook .8
6.2 Marking .8
Annex A (normative) List of hazards . 11
Annex ZA (informative) !!Relationship between this European Standard and the Essential
!!
Requirements of EU Directive 98/37/EC"""" . 16
Annex ZB (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC"""" . 17
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SIST EN 909:1999+A1:2009
EN 909:1998+A1:2009 (E)
Foreword
This document (EN 909:1998+A1:2009) has been prepared by Technical Committee CEN/TC 144 "Tractors
and machinery for agriculture and forestry", the secretariat of which is held by AFNOR.
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 2010, and conflicting national standards shall be withdrawn at
the latest by January 2010.
This document includes Amendment 1, approved by CEN on 2009-05-23.
This European Standard supersedes EN 908:1999.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
This European Standard 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
standard."
Annex A is normative and contains the "List of hazards".
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.
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SIST EN 909:1999+A1:2009
EN 909:1998+A1:2009 (E)
Introduction
The extent to which hazards are covered is indicated in the scope of this standard. These hazards are specific
to centre pivot and moving lateral types irrigation machines.
1 Scope
This standard specifies specific safety requirements and their verification for the design and construction of
centre pivot and moving lateral types irrigation machines that are electrically powered.
NOTE Figures 1 to 5 give illustrations of these machines.
In addition, it specifies the type of information on safe working practices to be provided by the manufacturer.
The list of significant hazards dealt with in this standard is given in annex A. Annex A also indicates the
hazards which have not been dealt with.
Hazards due to the use of the pump associated with centre pivot and moving lateral types irrigation machines
are not dealt with.
Hazards induced by the use of these machines for pesticide products and liquid fertilizer application are not
dealt with.
Environmental aspects have not been considered in this standard.
This standard applies primarily to machines which are manufactured after the date of issue of the standard.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to
this European Standard only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies.
EN 292-1:1991, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic
terminology, methodology.
EN 292-2:1991, Safety of machinery — Basic concepts, general for design — Part 2: Technical principles and
specification (including amendment A1:1995).
EN 294:1992, Safety of machinery, Safety distances to prevent danger zones being reached by the upper
limbs.
prEN 12325-2:1996, Irrigation techniques — Centre pivots and moving lateral systems — Part 2: Minimum
performances and technical characteristics.
EN 60204-1:1992, Safety of machinery — Electrical equipment of machines — Part 1: General requirements.
EN 60529:1991, Degrees of protection provided by enclosures (IP code).
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SIST EN 909:1999+A1:2009
EN 909:1998+A1:2009 (E)
3 Definitions
For the purpose of this standard, the definitions given in EN 292-1:1991 and EN 292-2:1991 apply together
with the following:
3.1
centre pivot
Irrigation machine constituted of a long length pipe supported by towers equipped with wheels driven by
motors, including a fixed point where water and energy arrive.
NOTE This irrigation machine can be used either on a complete circle or on a circle quadrant. It can be movable i.e.
the pivot point can move from a working position to a new working position, during the movement the watering is stopped.
3.2
pivot point
Fixed point from which the rotation of the whole machine is performed.
NOTE It is characterised by a structure fixed on a concrete flagstone leaving the machine free to rotate. Here feeding
of water and energy are performed.
3.3
moving lateral
Sprinkling lateral built on the same principal as centre pivot, the displacement of which is lateral (translatory
motion).
NOTE The control tower receives or pumps the water and receives or produces its own electrical energy.
3.4
control tower
In the case of a movable system, tower which initiates the movement of the whole sprinkling lateral.
NOTE It can be situated in the centre of the lateral or at one of the ends and be equipped with 2 or 4 wheels, some of
them could be driving and possibly steering.
3.5
irrigation gun
Large sprinkler with slow motion return used at the end of an irrigation machine generally watering a sector.
4 Requirements
4.1 General
The machines shall comply as appropriate with EN 292 for hazards which are not dealt with and especially
with annex A of EN 292-2:1991/A1:1995 when EN 292 does not give precise requirements.
Unless otherwise specified in this standard, the machine shall comply with the requirements of tables 1, 3, 4
and 6 of EN 294:1992.
4.2 Starting control
The switching on control and the displacement control shall be separate. Those manual controls shall be
placed on a panel lockable by a key. If the main control panel is not located on the pivot point or on the cart of
a moving lateral an additional external circuit breaker shall be positioned at the pivot point or on the cart.
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EN 909:1998+A1:2009 (E)
4.3 Stopping devices in plot limits
In case of danger (road, railway, electrical line, buildings, .), in order to limit the displacement of the centre
pivot covering a circle quadrant and moving lateral type irrigation machine to the surface intended to be
watered, two stopping devices shall be placed on two separate points, each stopping device shall be able
independently to stop (or reverse) the displacement. The thrusts used shall have a minimum width taking into
account machine dilatation and misalignment risk, their minimum height from the ground shall be 1 m. In case
of danger zone one of the devices shall be a fixed impassable obstacle.
4.4 Alignment – guiding
The alignment device shall be doubled with a safety device in case of misalignment. The safety device shall
be activated in passive position. In case of breaking of the alignment device, a return spring or other
mechanical device shall be able to bring back the machine in safety position. For movable machines, in case
of loss of guiding signal or deviation of more than 0,5 m, the machine shall stop.
4.5 Stability
4.5.1 Pivot point
The fixation of the pivot point shall withstand an horizontal load F = 10 000 N applied to the top of the pivot
point (horizontal axis of the elbow) and a reversing moment of Fxh = 40 000 Nm (h is the vertical distance
from the application point of F to the ground).
Each anchorage shall be able to withstand half of the load applied by the spray line, the anchorages shall be
completely apparent and treated against corrosion.
4.5.2 Span
The span stability shall be checked by using the calculation note of prEN 12325-2:1996, annex A.
The permissible load in accordance with the elastic limit shall be weighted with the coefficient 1,5 under static
conditions. The following loading cases will be considered for a machine with and without water:
difference of slope between two consecutive spans = 15 % (see example in figure 1);
total slope over several spans or the entirety = 10 % (see example in figure 2);
relative angle between two consecutive towers = ± 15 ° (see example in figure 3);
relative angle between any two towers of the machine = ± 30 ° (see example in figure 4);
ground clearance H beneath these spans, or beneath the overhang at any point of the installation ≥
minimum ground clearance specified by the manufacturer (figure 5);
side effort due to track effect = ± 10 000 N (5 000 N per wheel).
The minimum steel wall thickness shall not be less than 2,5 mm. Weldings of structure elements shall be able
to withstand the constraints listed in prEN 12325-2:1996, annex A.
4.5.3 Overhang
A clogging indicator shall be fitted on the overhang.
Gun stroke frequency shall be different from natural frequency of the structure to avoid resonance risks.
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EN 909:1998+A1:2009 (E)
4.5.4 Structure
The structure shall be designed to withstand a wind of 140 km/h perpendicular to the structu
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