ISO INTERNATIONAL STANDARD 26261-3 First edition 2017-02 Fireworks Category 4 - Part 3: Test methods Artifices de divertissement-Categorie4- Partie 3: Méthodes d'essai Reference number ISO 26261-3:2017(E) so International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 Not for Resale, 2017/5/11 02:38:43 itted without license from IHS IS0 26261-3:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,PublishedinSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax+412274909 47 [email protected] www.iso.org Intenationai br PrganizationforStandardization icensee-ZHEJIANG INST OF STANDARDIZRoISQ s1.7 - All rights reserved I by IHS unde etworking permitted without license from IHS IS0 26261-3:2017(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Test environment for functioning test 4.1 General. ..1 4.2 Wind measurement 5 Apparatus. ..1 6 Test methods. .5 6.1 Construction and stability .5 Outer dimension of item .5 6.1.1 6.1.2 Determination of calibre .6 6.1.3 Determination of gross mass .6 6.2 Design - Verification .6 6.3 Determination of tube angle .6 6.3.1 Apparatus.. .6 6.3.2 Procedure .6 6.4 Angle of ascent and burst height .7 6.4.1 General. 7 6.4.2 Dimensions of mortar. 7 6.4.3 Support of mortar 7 6.5 Measurement of sound pressure level. 7 6.5.1 Apparatus. 7 6.5.2 Procedure. 7 6.6 Extinguishing of flames 7 6.6.1 Apparatus. 6.6.2 Procedure. .7 6.7 Visual and audible inspections. 8 6.8 Mechanical conditioning .8 6.8.1 Apparatus. .8 6.8.2 Procedure.. 6.9 Thermal conditioning .8 6.9.1 Apparatus. 6.9.2 Procedure. ..8 6.10 Functiontest ..8 6.10.1 Apparatus. ..8 6.10.2 Procedure. .9 6.10.3 Monitoring of effect, rising/bursting and drop height .9 6.10.4 Monitoring of effect range and effect dimensions of aquatic fireworks .9 Annex A (informative) Mechanical conditioning (shock apparatus) ..11 Annex B (informative) Procedures for calculation of heights ..14 Annex C (informative) Calculation method for safety/protection distance ..18 Bibliography .19 iii See=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS Not for Resale, 2017/5/11 02:38:43