ISO INTERNATIONAL STANDARD 19636 First edition 2019-02 Ships and marine technology General requirements for inclinometers used for the determination of trim and list of LNG carriers Navires et technologie maritime - Exigences générales relatives aux inclinometresutilisespourladeterminationdeI'assietteetlistedes méthaniers Reference number IS0 19636:2019(E) ISO @ IS0 2019 IS0 19636:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 19636:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ...1. 3 Terms and definitions 4 Safety precautions .2 4.1 Existing safety regulations, standards and classification societies rules .2 4.2 Equipment precautions. .2 5 Design requirements. .3 5.1 General .3 5.2 A Trim and list inclinometer's axes and range .3 5.3 Communication methods .3 5.3.1 Analogue current interface type. .3 5.3.2 Digital interface type 3 5.4 Levelling of a trim and list inclinometer. .3 5.5 A trim and list inclinometer's protection box 4 5.6 Sealing, security and unsealing. .4 5.7 Marking serial number .4 6 Installation .5 6.1 General .5 6.2 Installation of a trim and list inclinometer .5 6.3 Alignment of a trim and list inclinometer. .5 6.4 Alignment of a trim and list inclinometer - Ship at dry dock ..6 6.5 Installation of a trim and list inclinometer Ship at floating dock .6 6.6 Installationofatrimandlistinclinometer Shipanchoredormoored .7 7 Accuracy ..8 7.1 General. ..8 7.2 Uncertainty of a Trim and List inclinometer's inherent error -Factory acceptance .8 test(FAT) 7.3 Uncertainty of reference standard -Site acceptance test (SAT) ..8 7.4 Integrated overall accuracy. .9 8 Verification test and certification .9 8.1 General .9 8.2 Visual examination .9 8.3 Verification test. .10 8.4 Sealing .10 8.5 Certificate .10 Annex A (informative) Verification ofalignment for trim and list inclinometers .11 Bibliography .13 @ IS0 2019 - All rights reserved iii