ISO INTERNATIONAL STANDARD 10397 First edition 1993-08-01 Stationary source emissions - Determination of asbestos plant emissions - Method by fibre count measurement Emissions de sources fixes -- Détermination des émissions par des usines d'amiante --- Méthode par comptage des fibres Reference number ISO 10397:1993(E) Standardizatic by IHS No reproduction or networking permitted without license from IHS Not for Resale ISO 10397:1993(E) Contents Page 1 Scope 2 2 Normative references 2 3 Definitions 2 4 Symbois with their corresponding units and subscripts 3 5 Principle 6 Summary of method 3 7 Apparatus 7.1 General 4 7.2 List of apparatus 6 7.3 Sampling probe (including nozzle and fibre collector) 6 7.4 Sampling rate and volume 7 7.5 Flow and temperature measurement in the duct 8 8 Facilities at the sampling site 8 8.1 General 8 8.2 Requirements for a suitable sampling location 8 8.3 Location of access ports 8 8.4 Sampling platform 8 9 Site work prior to sampling 9 9.1 Genera! 9 9.2 Duct cross-sectional area at the sampling plane 9 9.3 Velocity and temperature survey 10 9.4 The number and position of sampling points 10 9.5 Preliminary sample 10 9.6 Sample transfer and assessment 10 10 Sampling procedure ISO1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanicai, including photocopying and microfilm, without per- mission in writing from the publisher. International OrganizationforStandardization Case Postale 56 CH-1211 Geneve 20 · Switzerland Printed in Switzerland Copyright International Organization for Standardization ISO 10397:1993(E) 10.1 General 11 10.2 Nozzle diameter, sampling rate and duration 11 10.3 Definitive sampling 12 10.3.1 General 12 10.3.2 Cumulative sampling (see 3.3) 12 10.3.3 Sample transfer 13 10.3.4 Velocity and temperature readings 13 10.4 Second definitive sample 13 11 Analytical procedures 13 11.1 Return of the filter(s) 13 11.2 Filter clearing in preparation for fibre counting 13 11.3 Fibre counting 13 12 Method of calculation 13 12.1 Caiculation of gasvelocity 13 12.2 Volume of air sampled 14 12.3 Validation of isokinetic sampling 14 12.4 Fibre concentration 14 13 Presentation and interpretation of results 14 13.1 Presentation 14 13.2 Interpretation of results 14 Annexes A Non-ideal circumstances 15 A.1 Less suitable sampling locations 15 A.2 Position of sampling point 15 A.3 Analytical procedures 15 B Care of apparatus 16 B.1 Pitot-static tubes 16 B.2 Sample nozzles 16 B.3 Integrating meters 16 ii Not for Resale