07-30164823-DC.pdf

a Date: 22 June 2007 Origin: European Latest date for receipt of comments: 30 September 2007 Project no.: 2007/00934 Responsible committee: AGE/6 Agricultural tractors and forestry machinery Interested committees: Title: Draft BS EN 15695-2 Agricultural tractors and self-propelled machinery - Protection against hazardous substances Part 2: Air purifying devices Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 September 2007. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. 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Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi-global.com. Direct tel: Responsible Committee Secretary: Mrs G Hagger (BSI) 17 Hollies Close;Twickenham;TW1 4NL;GB E-mail: gill.haggerbtinternet.com Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30164823 DC Licensed Copy: London South Bank University, London South Bank University, Tue Jul 03 01:09:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on European discussions in which the UK has taken an active part. Your comments on this draft are welcome and will assist in the preparation of the consequent British Standard. 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Licensed Copy: London South Bank University, London South Bank University, Tue Jul 03 01:09:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM DRAFT prEN 15695-2 June 2007 ICS 65.060.10 English Version Agricultural tractors and self-propelled machinery - Protection against hazardous substances - Part 2: Air purifying devices Tracteurs et machines agricoles automotrices - Protection contre les substances dangereuses - Partie 2 : Dispositifs d'épuration de l'air Landwirtschaftliche Traktoren und Selbstfahrende Arbeitsmaschinen - Schutz vor gefährlichen Stoffen - Teil 2: Luftreinigungseinrichtungen This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 144. 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 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. Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation. 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 © 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. prEN 15695-2:2007: E Licensed Copy: London South Bank University, London South Bank University, Tue Jul 03 01:09:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 15695-2:2007 (E) 2 Contents Page Foreword3 Introduction.4 1 Scope 6 2 Normative references6 3 Terms and definitions .7 4 Requirements and test procedures .7 4.1 Dust.7 4.1.1 Requirements.7 4.1.2 Test procedure.7 4.2 Aerosols8 4.2.1 Requirements.8 4.2.2 Test procedure.8 4.3 Gas and vapours8 4.3.1 Requirements.8 4.3.2 Test procedure.9 5 Optional test for installed air purifying devices.9 6 Information for use9 Annex A (informative) Method for assessing the effectiveness of installed air purification devices10 A.1 Scope 10 A.2 Principle10 A.3 Measurement protocol 10 A.3.1 Cab conditioning10 A.3.2 Measurement of aerodynamic characteristics .10 A.3.3 Test room11 A.3.4 Aerosol generation11 A.3.5 Measurement of concentrations 11 A.3.6 Test report14 Annex B (informative) New air flow measurement methods.15 B.1 Measurement of air flow at the diffusers.15 B.2 Measurement of the flow rate of new air by tracing.15 B.3 Measurement of the flow rate of new air by thermal anemometry.16 B.3.1 Measuring apparatus.16 B.3.2 Measurement points17 B.3.3 Measurement conditions 18 B.3.4 Determination of the flow rate of new air18 Annex C (normative) Typical test report.20 C.1 Description of the equipment tested .20 C.1.1 Cab (attach a dimensional drawing):.20 C.1.2 Vehicle for which the cab is designed:20 C.1.3 Pressurisation and air purification system:20 C.2 Tests21 C.2.1 Description.21 C.2.2 Results (repeated as many times as there are different settings):.22 Annex D (informative) 23 Bibliography24 Licensed Copy: London South Bank University, London South Bank University, Tue Jul 03 01:09:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 15695-2:2007 (E) 3 Foreword This document (prEN 15695-2:2007) 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 document is currently submitted to the CEN Enquiry. This document (prEN 15695) consists of the following parts, under the general title Agricultural tractors and self-propelled machinery Protection against hazardous substances: Part 1: Cab classification, requirements and test procedures Part 2: Air purifying devices Licensed Copy: London South Bank University, London South Bank University, Tue Jul 03 01:09:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 15695-2:2007 (E) 4 Introduction When operating agricultural machinery and tractors the operator may be exposed to dust and/or chemical substances (see for example the application of plant protection products or fertilisers). Cabs of agricultural tractors and self-propelled machines providing protection against these substances can respectively be used to reduce operator exposure to air contaminants generated during farming operations. In a cabin filtration system a fan draws/pushes air through an air purifying device and pressurizes the cabin with this filtered air. In some cases a re-circulation system is employed to filter the internal air in the cab by re-circulating the air through additional filter(s) and then past the air conditioner evaporator coil. The air flows out of the pressurized enclosure through leaks and/or a vent port. Air flow in the cab interior is ducted to distribute the filtered air around the operator providing a breathing space that is supplied with air which has contaminant levels reduced. With regard to the application of plant protection products (PPP) the operator may be exposed to risks: before the actual spraying operation (e.g. handling of PPP cans / packages, spray tank filling, sprayer adjustment); during the spraying operation (e.g. on the tractor or self-propelled sprayer with/without cab, when working at the sprayer when adjusting the sprayer in the field, removing nozzle blockages, etc.); after the spraying operation (e.g. when removal of residues, sprayer cleaning, service and maintenance operations). The operator exposure may be caused by dermal and respiratory contact with the PPP. In general, the dermal contact may be seen as the main problem. The different situations also show that different parties are involved (PPP manufacturer, operator, (mounted, trailed and self-propelled) sprayer manufacturer, tractor manufacturer) and are forced to contribute to the risk reduction. With regard to the wide range of available PPP, the different potential risks and the expertise of the PPP manufacturer who is the only one knowing exactly the product respectively the potential risks it is very essential that the necessary protective measures are specified on the PPP label and observed by the operator. Normally the following protective measures (personal protective equipment PPE) are specified on labels today: dermal exposure: gloves, overall, apron, headdress (with face protection), protective goggles; respiratory exposure: filtering half masks. The objective of this document is to improve the operator protection during spraying operations by using the protective function of the cab of self-propelled sprayers and tractors in case of mounted or trailed sprayers. For this purpose this document specifies cab categories, performance requirements, test procedures and the operator information to be provided. However, with regard to the different risk situations it shall be noted that additional measures related to sprayers and PPP shall be considered to improve or to complete the operator protection, for example providing means for the storage of used PPE outside the cab, development of sensors to detect hazardous substances in cabs. To allow and to ensure the protection by cabs the cab, respectively the corresponding cab category, shall be accepted and shown on the PPP label (otherwise the operator will still be forced to use the specified PPE). In Licensed Copy: London South Bank University, London South Bank University, Tue Jul 03 01:09:36 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 15695-2:2007 (E) 5 addition, the cab performance shall be maintained during the life time. Therefore, the intended regular inspection of sprayers in use should include the inspection of cabs. Noting this, this document shall consider the different types of tractors and machinery and their intended use as well as the responsibilities and expertise of all involved parties. Therefore, this document shall satisfy especially the following conditions: to distinguish which requirements shall be mandatory for all types of tractors and machinery and additional requirements to provide protection in case of special situations; therefore, appropriate information about the performance of the tractor / machine shall be provided to the operator/farmer; to ensure a high level of occupational safety by specifying performance based requirements corresponding to the state of art and allowing technical progress; to consider the wide range substances and the decision of the operator which substance/product is applied; to use the expertise of manufacturers of PPP, fertilisers and filters (air purification devices) to ensure the appropriate protection; to consider specific implement features (for example supplementary controls); to allow the use of and compatibility with available filters; to use available specifications and standards; not to reduce the operator protection against other hazards. It should be understood that the work on the protection against hazardous substances shall be continued to consider the responsibilities of all involved parties and additional action