ISO INTERNATIONAL STANDARD 16904 Firstedition 2016-02-15 Petroleum and natural gas industries - Design and testing of LNG marine transfer arms for conventional onshore terminals Industriesdupetroleetdugaz naturel-Conception etessaisdes bras de transfertdeGNLsurdes terminaux terrestres conventionnels Reference number IS016904:2016(E) ISO Intermational Organization for Standardization @IS02016 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 ted without license from IHS IS016904:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,Published inSwitzerland 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. ISOcopyrightoffice Ch. de Blandonnet 8. CP 401 CH-1214 Vernier,Geneva, Switzerland Tel.+41 22 749 0111 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Intematinaibr PrganizationfoStandardization License-ZHEJIANG INST OF STANDARDIZoISQ0d6-All rights reserved Not for Resale, 2016/4/26 02:15:33 networking permited without license from IHS IS0 16904:2016(E) Contents Page Foreword ..vi 1 Scope ..1 2 Normative references 3 Terms and definitions ... 4 Abbreviatedterms 5 Design of the arms .10 5.1 Definition of the length and the configuration of the arms, arms description .10 5.1.1 General. ..10 5.1.2 Balancing. ..10 5.1.3 Armsdimensionsandclearances ..11 5.2 Designbasis .11 5.2.1 Product line diameter and product data .11 5.2.2 Material and grades.. ..11 5.2.3 Stress analysis ..12 5.3 Swivel joints. .15 5.3.1 General. .15 5.3.2 Product sealing arrangement .16 5.3.3 Bearing system .16 5.3.4 External sealingarrangement ..16 5.3.5 Design. ..16 5.4 Structural bearings .17 5.4.1 Design ..17 5.4.2 Protection of structural bearings .18 5.4.3 Grease sampling point ..18 5.5 Accessories .18 5.5.1 Adjustable support (jack) .18 5.5.2 Nitrogen injection line .18 5.5.3 Stowing locking device ..18 5.5.4 Ladders and platforms .19 5.5.5 Vapourrecoverylines. .19 5.5.6 Liquid nitrogen line. .19 5.5.7 Thermal insulation .19 5.5.8 Ice fall protection ..19 5.6 Pipework and fitting. 19 5.6.1 Process connections. .19 5.6.2 Drain connection. .19 5.6.3 Plugged connection 20 5.6.4 Valve. .20 5.6.5 Connection flange. 20 5.6.6 Gasket .20 5.7 Welding 20 5.8 Corrosion protectionand embrittlementprotection .20 5.8.1 Corrosion protection. .20 5.8.2 Embrittlement protection 20 5.9 Maintenance 21 6 Safety systems 21 6.1 General. 21 6.2 Two stage alarm and shutdown system 22 6.2.1 First stage.. 22 6.2.2 Second stage 22 6.3 Monitoring and alarm systems 22 6.3.1 Alarm envelopes. 22 iii icensee=ZHEJIANGINSTOF STANDARDIZATION C15956617 ithout license from IHS