EN 12779:2004+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.MHYDQMHSicherheit von Holzbearbeitungsmaschinen - Ortsfeste Absauganlagen für Holzstaub und Späne - Sicherheitstechnische Anforderungen und LeistungenSécurité des machines pour le travail du bois - Installations fixes d'extraction de copeaux et de poussières - Performances relatives à la sécurité et prescriptions de sécuritéSafety of woodworking machines - Chip and dust extraction systems with fixed installation - Safety related performances and safety requirements79.120.10Lesnoobdelovalni strojiWoodworking machinesICS:Ta slovenski standard je istoveten z:EN 12779:2004+A1:2009SIST EN 12779:2005+A1:2009en01-oktober-2009SIST EN 12779:2005+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12779:2004+A1
August 2009 ICS 79.120.10 Supersedes EN 12779:2004English Version
Safety of woodworking machines - Chip and dust extraction systems with fixed installation - Safety related performances and safety requirements
Sécurité des machines pour le travail du bois - Installations fixes d'extraction de copeaux et de poussières - Performances relatives à la sécurité et prescriptions de sécurité
Sicherheit von Holzbearbeitungsmaschinen - Ortsfeste Absauganlagen für Holzstaub und Späne - Sicherheitstechnische Anforderungen und Leistungen This European Standard was approved by CEN on 20 October 2004 and includes Amendment 1 approved by CEN on 16 July 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 worldwide for CEN national Members. Ref. No. EN 12779:2004+A1:2009: ESIST EN 12779:2005+A1:2009

Table with corresponding terms in English, French and German . 51Annex B (informative)
Relationship between airflow, vacuum, air velocity and power consumption . 55Annex C (informative)
Verification of performance measurement . 58Annex D (normative)
Noise reduction at the design stage . 60Annex E (informative)
Air velocity and extraction hood design . 62Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC" . 64Annex ZB (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 65Bibliography . 66 SIST EN 12779:2005+A1:2009

EN ISO 12100-1:2003 for a description of A, B and C standards). This standard for Chip and dust extraction systems with fixed installation will be followed by a separate standard for Semi-stationary chip and dust extraction machines. 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.
Directive 94/9/EC concerning equipment and protective systems intended for use in potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this document. The present standard is not intended to provide means of complying with the Essential Health and Safety Requirements (EHSR) of Directive 94/9/EC. !This European Standard is not applicable to machines which are manufactured before the date of its publication as EN." SIST EN 12779:2005+A1:2009

Part 1: Emission SIST EN 12779:2005+A1:2009

Part 2: Immunity" !EN 60204-1:2006", Safety of machinery — Electrical equipment of machines — Part 1: General requirements !(IEC 60204-1:2005, modified)" !EN 60439-1:2008, Low-voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially type-tested assemblies (IEC 60439-1:2007)" EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 60947-4-1:2001, Low-voltage switchgear and controlgear — Part 4-1: Contactors and motor-starters — Electromechanical contactors and motor-starters (IEC 60947-4-1:2000) EN 60947-5-1:2004, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and switching elements — Electromechanical control circuit devices (IEC 60947-5-1:2003) !EN 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:2007)" EN ISO 11202:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Survey method in situ
(ISO 11202:1995) EN ISO 11688-1:1998, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 1: Planning (ISO/TR 11688-1:1995) EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology and methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles !deleted text" (ISO 12100-2:2003) !EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006)" !EN ISO 13850:2008, Safety of machinery — Emergency stop — Principles for design
(ISO 13850:2006)" !EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008)" EN ISO 14122-2:2001, Safety of machinery — !Permanent means of access" to machinery — Part 2: Working platforms and !walkways" (ISO 14122-2:2001) EN ISO 14122-3:2001, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders and guard rails (ISO 14122-3:2001) EN ISO 14122-4:2004, Safety of machinery — Permanent means of access to machinery — Part 4: Fixed ladders (ISO 14122-4:2004) ISO 7000:2004, Graphical symbols for use on equipment — Index and synopsis ISO 10816-1:1995, Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts — Part 1: General guidelines HD 22.1 S4:2002, Cables of rated voltages up to and including 450/750 V and having cross-linked insulation — Part 1: General requirements SIST EN 12779:2005+A1:2009

Figure 1 — Chip and dust extraction system SIST EN 12779:2005+A1:2009

for storage of chips and dust 3.1.11 container movable equipment with a volume over 0,5 m3 for storage of chips and dust 3.1.12 silo discharge system system which continually or intermittently empties chips and dust from silo/container 3.1.13 emptying system system which continually or intermittently removes chips and dust from the separator 3.1.14 transport system system to convey chips and dust from one or more separator or silo to other parts of the extraction system SIST EN 12779:2005+A1:2009

value Kst bar ms-1 Fan efficiency η % 4 List of significant hazards !This clause contains all significant hazards, hazardous situations and events (see EN 1050:1996) as far as they are dealt with in this document, identified by risk assessment as significant for the machines as defined in the scope and which require action to eliminate or reduce the risk. This document deals with these significant hazards by defining safety requirements and/or measures or by reference to relevant standards. These hazards are listed in Table 1 in accordance with Annex A of EN 1050:1996. SIST EN 12779:2005+A1:2009

No Hazards, hazardous situations and hazardous events EN ISO 12100 Relevant sub-clause of this document
Part 1: 2003 Part 2: 2003
1 Mechanical hazards related to: - machine parts or workpieces:
a) shape; 4.2 4.2.1, 4.2.2, 5 5.4.1.4, 5.4.1.7
b) relative location; 5.2.3, 5.4.1.2, 5.4.1.4, 5.4.1.5, 5.4.1.6, 5.4.1.7
c) mass and stability (potential energy of elements which may move under the effect of gravity) 5.4.1.7
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.10
e) mechanical strength. 5.3.1, 5.4.1.1, 5.10
- accumulation of energy inside the machinery:
g) liquids and gases under pressure; 4.2 4.10, 5.5.4 5.4.1 h)vacuum 4.2 4.10, 5.5.4 5.4.1 1.1 Crushing hazard 4.2.1
5.4.1.7; 5.3.7 1.2 Shearing hazard 5.4.1.7; 5.3.7 1.3 Cutting or severing hazard 5.4.1.7; 5.3.7 1.4 Entanglement hazard 5.4.1.7; 5.3.7 1.5 Drawing-in or trapping hazard 5.3.7, 5.4.1.7 1.9 High pressure fluid injection or ejection hazard 5.4.3 2 Electrical hazards due to: 2.1 Contact of persons with live parts (direct contact) 4.3 4.9, 5.5.4 5.2.2; 5.5 2.2 Contact of persons with parts which have become live under faulty conditions (indirect contact) 4.3 4.9 5.2.2; 5.5 2.4 Electrostatic phenomena 4.3 4.9 5.4.1.4; 5.12 3 Thermal hazards resulting in: 3.1 Burns, scalds and other injuries by a possible contact of persons with objects or materials with an extreme high or low temperature, by flames or explosions and also by the radiation of heat sources 4.4
5.4.1 4 Hazards generated by noise, resulting in: 4.1 Hearing loss (deafness), other physiological disorders (loss of balance, loss of awareness) 4.5 4.2.2, 5 5.4.2; 6.4.6 SIST EN 12779:2005+A1:2009

5.4.1.7, 5.4.3 7.2 Fire and explosion hazard 4.8 4.4
5.4.1 8 Hazards generated by neglecting ergonomic principles in machinery design related to: 8.1 Unhealthy postures or excessive effort 4.9 4.7, 4.8.2, 4.11.12, 5.5.5, 5.5.6 5.2.3, 5.3.7, 5.4.1, 5.6 8.2 Hand-arm or foot-leg anatomy 4.9 4.8.3
5.2.3, 5.4.1, 5.6 8.6 Human error, human behaviour
4.8, 4.11.8, 4.11.10, 5.5.2, 6 5.15; 6.4 8.7 Design, location or identification of manual controls
4.8.7, 4.11.8 5.2.3, 5.6 8.8 Design or location of visual display units
4.8.8, 6.2 5.2.3 10 Unexpected start up, unexpected overrun/overspeed (or any similar malfunction) from: 10.1 Failure/disorder of the control system
4.11, 5.5.4
5.2.2 10.2 Restoration of energy supply after an interruption
4.11.4
5.2.5; 5.8 10.3 External influences on electrical equipment
4.11.11 5.5 10.6 Errors made by the operator (due to mismatch of machinery with human characteristics and abilities, see 8.6) 4.9 4.8, 4.11.8, 4.11.10, 5.5.2, 6 5.2.4 11 Impossibility of stopping the machine in the best possible conditions
4.11.1, 4.11.3, 5.5.2
5.2.2, 5.2.3; 5.6.2, 5.14 13 Failure of the power supply
4.11.1, 4.11.4 5.2.6 14 Failure of the control circuit
4.11, 5.5.4
5.2.2 15 Errors of fitting 4.9
4.7, 6.5
5.4.3.2.1, 5.13 16 Break-up during operation 4.2.2 4.3 5.3.2 17 Falling or ejected objects or fluids 4.2.2 4.3, 4.10
5.3.2. 18 Loss of stability / overturning of machinery 4.2.2 5.2.6
5.3.1; 5.10 19 Slip, trip and fall of persons (related to machinery) 4.10
5.5.6 5.4.1.7; 5.6.2 " 5 Safety requirements and/or measures 5.1 General The machine shall comply with the safety requirements and/or protective measures of this clause. In addition, the machine shall be designed in accordance with the principles of EN ISO 12100-1:2003 for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges). SIST EN 12779:2005+A1:2009

!EN 60204-1:2006", and in addition: 5.2.2 Safety and reliability of control systems For the purpose of this standard a safety related control system means the system controlling the extraction system from and including automatic blast gate(s) with detector(s) in the feeding system to the connected woodworking machine(s) if any are present, to the silo filling system including the final level switch in the silo. The safety related control systems of this machine are those for:  emergency stopping (see 5.2.3.4);  interlocking (see 5.3.7 and 5.4.1.7);  fire detection (see 5.4.1.5);  starting (see 5.2.3.2);  normal stopping (see 5.2.3.3);  sequence interlocking (see 5.2.3.2, 5.2.3.3 and 5.2.3.4);  indication of extraction vacuum (see 5.4.3.1.2);  return air monitoring (see 5.4.3.2.2);  detection of pressure difference in separators (5.4.3.1.2);  detection of the emptying system function;  detection of silo/container filling. The control systems for emergency stopping and for interlocking shall as minimum be Category 1 in accordance with the requirements of !EN ISO 13849-1:2008" and shall be “hardwired”. The other control systems can be equipped with an electronic system. Well-tried components and principles for the purpose of this standard are: a) electrical components if they comply with relevant standards including the following as: 1) EN 60947-5-1:2004 (Section 3) for control switches with positive opening operation used as mechanically actuated position detectors for interlocking of guards and for relays used in auxiliary circuits; 2) EN 60947-4-1:2001 for electromechanical contactors and motor starters used in main circuits; 3) HD 22.1 S4:2002 for rubber insulated cables; SIST EN 12779:2005+A1:2009

!EN 60204-1:2006". The circuits shall be "hardwired“. Electronic components alone do not satisfy the “well-tried" requirements; c) mechanical components if, for example, they operate in the positive mode in accordance with the description given in 4.5 of EN ISO 12100-2:2003; d) mechanically actuated position detectors for guards if they are actuated in positive mode and their arrangement/fastening and the cam design/mounting comply with the requirements of 5.2 and 5.3 of
EN 1088:1995; e) interlocking devices with guard locking if they satisfy the requirements described in 5.3.7; f) pneumatic and hydraulic components and systems if they comply with the requirements of
EN 983:1996 and EN 982:1996 respectively; g) detectors and indicators if they comply with the requirements of Category B of
!EN ISO 13849-1:2008"; h) time delay relays if they comply with the requirements of Category B of !EN ISO 13849-1:2008" and are designed for 1 million operations. The control systems including detectors, indicators and time delay relays (5.2.2 g) and 5.2.2 h)) shall as a minimum be of Category B in accordance with the requirements of !EN ISO 13849-1:2008". For the purpose of this standard Programmable Logic Controllers (PLC) are considered as Category B. Verification: By visual inspection of the extraction system and by checking the relevant drawings and/or circuit diagrams. !deleted text" !NOTE For components characteristics the information from the component supplier can be useful." 5.2.3 Position of and other requirements to controls 5.2.3.1 General All electrical controls shall be placed at a minimum height of 600 mm and a maximum height of 1 800 mm from the servicing level. (For the position of emergency stop controls see 5.2.3.4). Verification: By visual inspection and measurement on the extraction system. 5.2.3.2 Starting The starting conditions shall comply with the requirements in 9.2.5.2 of !EN 60204-1:2006" (also see 6.4.4). For extraction systems with an automatic emptying system, the starting sequence shall ensure that the emptying system is running prior to starting the extraction system. NOTE For example the transport system between a filter and silo shall run normally before the extraction system connected to the woodworking machine is started. After the emergency stop has been activated and reset, the extraction system shall perform a sequence that brings it to a point where a normal start up can be performed. SIST EN 12779:2005+A1:2009

!EN 60204-1:2006". Emergency stop devices shall meet the requirements of !EN ISO 13850" and 9.2.5.4 and 10.7 of
!EN 60204-1:2006" and shall be provided as follows: a) on the control panel where the normal electrical controls are situated; b) a maximum of 50 m from all electrically connected parts of the extraction system; c) a minimum of one emergency stop in each room with electrical parts or mechanical driven parts connected to the extraction system; d) be directly accessible from any frequently used moveable interlocked guard (see 5.3.7) and if necessary any other point of access. Examples of emergency stop location are shown in Figure 3. A recommendation that the extraction system is re-started, as soon as the emergency situation has been cleared, shall be included in the instruction handbook (see 6.4.4 and 5.2.3.2). Verification: By visual inspection, checking the relevant diagrams and functional testing on the extraction system.
Key 1 Electrical 2 Control panel Figure 3 — Examples of emergency stop control location 5.2.4 Mode selection If a mode selection switch is provided (e.g. for selecting between normal mode of operation and setting mode of operation for silo’s equipped with an automatic silo discharge system (see 5.4.1.7 m)) it shall be of the lockable type. 5.2.5 Speed changing Not relevant. 5.2.6 Failure of the power supply Automatic re-starting of the extraction system shall be prevented (see 7.5 paragraphs 1 and 3 of
!EN 60204-1:2006"). When actuating the start control after failure of the power supply, the extraction system shall, before entering the normal starting sequence, perform a sequence in accordance with the requirements of 5.2.3.2 that brings the system into a position where a normal start up can be performed. SIST EN 12779:2005+A1:2009

For the purpose of this standard frequent is more than once per week. Any moving component (e.g. fans and rotary valves) with a run down time greater than 10 s and guarded by an interlocking guard shall also have guard locking. Guards shall comply with the requirements of EN 953:1997 and the safety distances in
!EN ISO 13857:2008". Verification: By visual inspection of the extraction system, measurement and checking the relevant drawings. 5.3.8 Automation and mechanisation Not relevant. 5.3.9 Clamping devices Not relevant. 5.3.10 Multi-station machines Not relevant 5.3.11 Safety appliances Not relevant. 5.4 Protection against non-mechanical hazards 5.4.1 Fire and explosion 5.4.1.1 General Extraction systems shall be located and be constructed such that sources of ignition, fire and explosion are removed and risks caused by fire and explosion are minimised. Extraction systems connected to woodworking machines processing only wood shall be designed with a Kst value of 200 bar ms-1. If the extraction system is connected to woodworking machines processing wood combined with non-wood material (e.g. lacquer, laminate and aluminium) it is recommended to evaluate whether the Kst value is above 200 bar ms-1. If this is the case additional safety measures may be required (e.g. fire extinguishing devices, additional explosion relief, safety valves, added strength construction). Verification: By checking the relevant drawings and visual inspection of the extraction system. 5.4.1.2 Location of separator, fan and silo The separator, fan and wood waste accumulation system shall be located outdoors (outside the working areas) or in specially designed rooms/buildings. The separator, fan and silo shall be located in a safe or non-hazardous area. Verification: By visual inspection of the extraction system. SIST EN 12779:2005+A1:2009
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