ISO INTERNATIONAL STANDARD 29042-4 First edition 2009-02-15 Safety of machinery Evaluation of the emission of airborne hazardous substances Part 4: Tracer method for the measurement of the capture efficiency of an exhaust system Securitedesmachines-EvaluationdeI'emission de substances dangereusesvehiculeesparl'air- Partie 4: Methode par traceur pour le mesurage de I'efficacite de captaged'unsystemed'échappement Reference number ISO 29042-4:2009(E) @ISO2009 Copyright Intemational Organization for Standardization Not for Resale ISO29042-4:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT ISO2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, Iso's member body in the country of the requester. ISO copyright office Case postale 56·CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2009 - All rights reserved without license from IHS Not for Resale ISO29042-4:2009(E) Contents Page Foreword. IV Introductior 1 Scope 2 Normativereferences 3 Terms and definitions ... 4 Principle.... 5 Simplifiedexpressionofthecaptureefficiency 6 Test method.... 6.1 Generalprocedure. 6.2 Measurementof concentration,C 6.3 Applicationtoaspecificgroupofmachines.. Controlparametersandinfluencingfactors.. 7.1 7.2 Control parameters.. 7.3 Influencingfactorsoncaptureefficiency.. 8 Test report. .8 Annex A (informative)Simplified calculation of random component of uncertainty on C3 (95%)... ....9 Bibliography ..10 ili cense from IHS Not for Resale ISO29042-4:2009(E) Foreword ISso (the International Organization for Standardization) is a worldwide federation of national standards bodies International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/lECDirectives,Part2 The main task of technical committees is to prepare International Standards. Draft International Standards adoptedbythetechnical committeesarecirculatedtothememberbodiesforvoting.Publicationasan International Standard requires approval by at least 75% of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO29042-4waspreparedbyTechnicalCommitteeISO/TC199,Safetyof machinery. IsO 29042 consists of the following parts,under the general title Safety of machinery-Evaluation of the emissionofairbornehazardoussubstances: Part1:Selectionoftestmethods Part 2:Tracer gas method for the measurement of the emission rate of a given pollutant Part3:Testbenchmethodforthemeasurementof theemissionrateofagivenpollutant Part4:Tracermethodforthemeasurementofthecaptureefficiencyofan exhaust system The following parts are under preparation: Part 5:Test bench method for the measurement of the separation efficiencyby mass of air cleaning systemswithunductedoutlet Part 6: Test bench method for the measurement of the separation efficiency by mass of air cleaning systems with ducted outlet Part7:Testbenchmethodforthemeasurementofthepollutantconc