1、BSI Standards Publication Thermal spraying Safety requirements for thermal spraying equipment Part 6: Spray booth, Handling system, Dust collection, Exhaust system, Filter PD CEN/TR 15339-6:2014National foreword This Published Document is the UK implementation of CEN/TR 15339-6:2014. The UK particip
2、ation in its preparation was entrusted to Technical Committee STI/40, Thermal spraying and thermally sprayed coatings. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a con
3、tract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 78894 9 ICS 25.220.20 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under
4、 the authority of the Standards Policy and Strategy Committee on 30 June 2014. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD CEN/TR 15339-6:2014 TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 15339-6 May 2014 ICS 25.220.20 English Version Ther
5、mal spraying - Safety requirements for thermal spraying equipment - Part 6: Spray booth, Handling system, Dust collection, Exhaust system, Filter Projection thermique - Exigences de scurit relatives au matriel de projection thermique - Partie 6: Cabine de projection, Systme de manipulation, Collecte
6、 de poussire, Systme dvacuation, Filtre Thermisches Spritzen - Sicherheitsanforderungen fr Einrichtungen fr das thermische Spritzen - Teil 6: Spritzkabinen, Handhabungssystem, Staubsammlung, Abluftsystem, Filter This Technical Report was approved by CEN on 22 October 2012. It has been drawn up by th
7、e Technical Committee CEN/TC 240. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
8、Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014
9、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 15339-6:2014 E PD CEN/TR 15339-6:2014CEN/TR 15339-6:2014 (E) 2 Contents Page Foreword 4 1 Scope 5 2 Normative references 5 3 Function of thermal spraying equipment for thermal sp
10、raying 5 3.1 General 5 3.2 Function and construction of a spray cabin .5 3.2.1 General requirements 5 3.2.2 Features of a spray cabin .6 3.2.3 Layout for a spray cabin or a thermal spraying equipment in the workshop .6 3.2.4 Ventilation and exhausting for the spray cabin 6 3.3 Equipment in the spray
11、 cabin .8 3.3.1 General 8 3.3.2 Function and description of the manipulating systems 8 3.3.3 Electrical equipment and installation 8 3.4 Extraction and filtering equipment 9 3.4.1 General 9 3.4.2 Dry extraction .9 4 Potential hazards 10 4.1 General . 10 4.2 Mechanical hazards 10 4.3 Electrical hazar
12、ds . 10 4.4 Thermal hazards . 10 4.5 Fire and explosion 10 4.6 Hazards generated by noise 10 4.7 Hazards generated by radiation 11 4.8 Hazards generated by spray materials and substances 11 4.9 Hazards generated by neglecting ergonomic principles 11 4.10 Human error, human behaviour 11 4.11 Hazard o
13、f asphyxiation 11 5 Safety requirements protection measures 11 5.1 General . 11 5.2 Protection measures from mechanical hazards 12 5.3 Protection measures from electrical shock or other injury from the energy supply 12 5.4 Protection measures from thermal attack 13 5.5 Protection measures from fire
14、and explosion . 13 5.6 Protection measures from noise outside the spray cabin in the workshop 13 5.7 Protection measures from radiation . 14 5.8 Protection measures from attack by spray materials and substances. 14 5.8.1 General . 14 5.8.2 Control of the emission into the environment . 15 5.8.3 Pres
15、sure supervising of the filter system 15 5.8.4 Precautionary measures for air recovery back into the spray cabin or workshop . 15 5.8.5 Cleaning the cabin 15 5.8.6 Disposal of spray dust . 16 5.9 Protection measures from neglecting ergonomic principles 16 5.10 Protection measures in the case of huma
16、n error and human behaviour . 16 5.11 Protection measures when entering the spray cabin . 16 5.12 Safety related maintenance . 16 PD CEN/TR 15339-6:2014CEN/TR 15339-6:2014 (E) 3 6 Requirements for manufacture, supply, operation, and maintenance 17 6.1 Requirements for the manufacturer 17 6.2 Require
17、ments for the integrator 17 6.3 Requirements for the user 17 7 National rules . 18 Bibliography 19 PD CEN/TR 15339-6:2014CEN/TR 15339-6:2014 (E) 4 Foreword This document (CEN/TR 15339-6:2014) has been prepared by Technical Committee CEN/TC 240 “Thermal spraying and thermally sprayed coatings”, the s
18、ecretariat of which is held by DIN. 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,
19、 the national standards organizations of the following countries are bound to announce this Technical Report: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
20、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TR 15339-6:2014CEN/TR 15339-6:2014 (E) 5 1 Scope This Technical Report specifies safety requirements of machines and equipment for t
21、hermal spraying, in this case of spray booths, handling, dust collection, exhaust, and filter systems. This Technical Report should be used in conjunction with the Technical Report CEN/TR 15339-1 which deals with general aspects for design, manufacture, and/or put into service of machines or equipme
22、nt and with the responsibility to issue the CE Conformity Declaration. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated referen
23、ces, the latest edition of the referenced document (including any amendments) applies. EN 657, Thermal spraying - Terminology, classification EN 12198-1, Safety of machinery Assessment and reduction of risks arising from radiation emitted by machinery Part 1: General principles CEN/TR 15339-1, Therm
24、al spraying Safety requirements for thermal spraying equipment Part 1: General requirements EN ISO 10218-2, Robots and robotic devices - Safety requirements for industrial robots - Part 2: Robot systems and integration (ISO 10218-2) EN ISO 13849-1, Safety of machinery - Safety-related parts of contr
25、ol systems - Part 1: General principles for design (ISO 13849-1) EN ISO 15667, Acoustics - Guidelines for noise control by enclosures and cabins (ISO 15667) EN ISO 60204-1, Safety of machinery Electrical equipment of machines Part 1: General requirements EN 60974-10, Arc welding equipment - Part 10:
26、 Electromagnetic compatibility (EMC) requirements 3 Function of thermal spraying equipment for thermal spraying 3.1 General The spraying processes are described in EN 657. Thermal spraying creates process related heat, fume, dust, radiation and high levels of noise. Therefore thermal spraying system
27、s are usually installed in firm enclosures. They are designed to protect personnel and environment and to control and minimise the exposure of the operator and others. Dust and fume can be captured and removed safely by a suitable ventilation, exhaust and filter system and the enclosure provides a g
28、uard against mechanical, electrical, thermal and noise risks. 3.2 Function and construction of a spray cabin 3.2.1 General requirements The spray cabin shall be designed that the noise level outside the cabin fulfils the legal requirements. Even if more than one piece of equipment is operated the to
29、tal noise level in the workshop shall fulfil these requirements. PD CEN/TR 15339-6:2014CEN/TR 15339-6:2014 (E) 6 3.2.2 Features of a spray cabin There are some different types of spray cabins available. Usually, modularly built single wall enclosures made out of about 100 mm thick elements are used
30、for plasma, arc and HVOF spraying processes. They consist of a solid steel sheet on the outer side and a perforate steel sheet on the side towards the noise source. The space between those sheets is filled with a non-flammable isolation material, for example with glass wool or rock wool. Also the do
31、ors and windows shall be able to protect the outside working personnel from excessive noise, dust, gases, fumes and intensive light, IR and UV radiation. Openings needed for electrical cables, gas or water hoses, and piping for ventilation and exhausting shall be sealed, in order to avoid acoustic t
32、unnelling and to minimise the escape of dust and vibrations. If the roof of the spray cabin has to carry installations like ventilator, power sources or heat exchangers and/or small lifting devices or manipulating equipment have to be mounted onto the ceiling, adequate reinforcement shall be applied
33、. Sufficient space for maintenance and a safe access to this area is required. In the case of mechanised spraying, the operator will enter the cabin only for changing the part to be coated or for maintenance. If loading and unloading of the parts can be executed through an opening, while the sprayin
34、g process is shut off, the enclosure can be built as small as possible and thus be more effective for dust extraction. For automatic processes loading and unloading may be done through a lock, while the process runs. 3.2.3 Layout for a spray cabin or a thermal spraying equipment in the workshop Spra
35、ying equipment shall not create safety hazards for nearby processes. A spray cabin or the spraying equipment should be located close to an outside wall to facilitate easy gas supply and the installation and effectiveness of the ventilation and extraction equipment. The workshop building should be si
36、ngle storey and be as spacious as possible with a high ceiling and good natural ventilation achieved by a sufficient number of air inlets, roof vents and opening doors and windows. In that way, gas accumulation can be avoided in unventilated areas overhead, such as voids above false ceilings or in v
37、oids below floor level, such as pits, service trenches, gullies or underground rooms, where gases heavier than air could accumulate. A mechanized ventilation can be necessary, in order to draw away gases heavier than air at lower height, as e. g. LPG, propane, argon. 3.2.4 Ventilation and exhausting
38、 for the spray cabin 3.2.4.1 Reasons for ventilation and exhausting To avoid explosive gas or dust mixtures or hazardous conditions the spray cabin shall be ventilated. A suitable air change and flow in the spray cabin prevents the formation of a burnable or explosive atmosphere inside the enclosure
39、, reduces temperature rise, serves for removing gases, fumes, dusts, further by-products and provides for a safe spraying operation. The filtration of the exhausted air and gas mixture avoids an inadmissible contamination of the environment. The national or local laws or regulations for emissions in
40、to the atmosphere shall be followed. 3.2.4.2 Ventilation of the spray cabin The air volume needed for the ventilation of the spray cabin is given by the exhaust air volume. The design of air inlet into the spray cabin and of the exhausting shall provide an air flow in suitable flow direction and loc
41、al speed. A laminar continuous air flow, which can be reached by a great number of small inlet openings equally distributed is preferred, so far as the air flow is not decisive disturbed by the spraying equipment and the manipulating system. A turbulent air flow causes swirls and low pressure areas,
42、 where dust can remain or fall out. PD CEN/TR 15339-6:2014CEN/TR 15339-6:2014 (E) 7 The ventilation capacity and speed in the cabin shall function in the sense of displacement ventilation. Capacity and speed shall serve: for an adequate transport of spray dusts to the exhaust system; to avoid too lo
43、w an oxygen content by diluting the atmosphere in the cabin (e. g. in the case of cold spraying); to avoid unacceptable gas concentration, which can remain in dead spots; to maintain the air temperature in the duct in a range that the filters will not be damaged (e. g. in the case of HVOF kerosene s
44、praying). 3.2.4.3 Exhausting the spray cabin The exhaust volume shall be adequate for the spray process and the size and shape of the exhaust hood and the component. Table 1 includes typical values in m 3 /h depending on the spray process. It should be noted that the better the exhaust hood is adjus
45、ted to the size and form of the component, the lesser are problems with remaining dust in the air and on the floor and cabin walls. The air speed to capture the rebounding particles and those which did not meet the part should be at least 1 m/s in front of the exhaust hood. In the case of manual spr
46、aying in a cabin an Air Change Rate (ACR), see Formula (1) of at least 60 to 180 changes per hour depending on the spraying process is recommended. The Air Change Rate is calculates as follows: N = Q/Vol (1) Where N number of air changes per hour Q Volumetric flow rate of air in cubic meter per hour
47、 Vol Space volume: length width height, in cubic meter Table 1 Exhaust volumes Spray process Exhaust volume min. m 3 /h Flame spraying 3 000 to 5 000 Arc spraying 8 000 to 12 000 Plasma spraying 8 000 to 10 000 HVOF (gaseous fuel) 10 000 to 12 000 HVOF (liquid fuel) 12 000 to 15 000 Cold spraying 5
48、000 to 15 000 Exhaust and ventilation systems will create a lower pressure in the spray cabin. This lower pressure shall not cause difficulties opening the doors while the extraction is running. An adequate air inlet shall be calculated and designed to avoid this. The start of the spray system shall
49、 be interlocked with the exhaust system to ensure adequate extraction during spray operation. PD CEN/TR 15339-6:2014CEN/TR 15339-6:2014 (E) 8 Sometimes ventilators with two running speeds are recommended either to keep a low ventilation level mode, if the cabin door is opened for maintenance, set-up or teach-in programming or to increase the ventilator capacity in the case of emergency to avoid a dangerous or explosive atmosphere in the cabin. The exhaust system should have a short run lengths and preferably should lead only from one or tw
