ISO INTERNATIONAL STANDARD 24490 Secondedition 2016-03-15 Cryogenic vessels Pumps for cryogenic service Récipients cryogeniques - Pompes pour service cryogénique Reference number ISO 24490:2016(E) ISO International Organization for Standardization =ZHEJIANG INST OF STANDARDIZATION C15956617 @IS02016 vided by IHS under lic Not for Resale, 2016/6/2 08:28:15 itted without license from IHS IS0 24490:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,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 +41 22 749 09 47 [email protected] www.iso.org Intenationaibr Prganization for Standardization icensee-ZHEJIANG INST OF STANDARDIZoISQ s.6 - All rights reserved etworking permitted without license from IHS IS0 24490:2016(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Requirements for pumps .2 4.1 General .2 4.2 Materials. .2 4.2.1 General 2 4.2.2 Mechanical properties at low temperature 4.2.3 Corrosionresistance. .3 4.2.4 Oxygen and oxidizing fluids compatibility .3 4.2.5 Hydrogen compatibility 4 4.3 Design .4 4.3.1 Pressure-containing parts ..4 4.3.2 Performance .4 4.3.3 Clearances. 4.3.4 Prevention of rubbing. .4 4.3.5 Fastenings. ..4 4.3.6 Warm bearings 4 4.3.7 Cold bearings .4 4.3.8 Bearing lubrication.. .5 4.3.9 Shaft seals. .5 4.3.10 Purging .5 4.3.11 Prevention of particle contamination 5 4.3.12 Specific requirement forflammable liquids .5 4.3.13 Protection against over-pressurization .6 4.3.14 Pumpmotors ..6 5 Test procedures 5.1 Prototype testing. .6 5.1.1 General. 5.1.2 Design evaluation .6 5.1.3 Performance evaluation 5.1.4 Initialtests. .6 5.1.5 Cryogenic tests. ..7 5.2 Production testing. 1 5.2.1 General. .7 5.2.2 Hydrostatic pressure test. 5.2.3 Mechanical running and performance test ..8 6 Cleanliness .8 7 Marking ..8 AnnexA (informative)Guidance on installationdesign ..9 Annex B (informative) Acceptable materials for construction of centrifugal pumps for ..11 liquid oxygen Bibliography ..15 iii See=ZHEJIANG INSTOFSTANDARDIZATIONC15956617 ed without license from IHS Not for Resale, 2016/6/2 08:28:15