ISO INTERNATIONAL STANDARD 10628-1 First edition 2014-09-15 Diagrams for the chemical and petrochemical industry - Part 1: Specification of diagrams Schémas de procedé pour Il'industrie chimique et pétrochimique - Partie 1: Specification des schemas de procedé Reference number IS0 10628-1:2014(E) LSO @ IS0 2014 Not for Resale IS0 10628-1:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved networking permitted without license from IHS Not for Resale IS0 10628-1:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions 4 Classification, information content, and presentation of flow diagrams ..1 4.1 General .1 4.2 Block diagrams. ..2 4.3 Process flow diagrams .3 4.4 Piping and instrumentation diagrams (P&ID) 3 5 Drafting rules ..4 5.1 General 4 5.2 Layout of flow diagrams .5 5.3 Connecting lines. .5 5.4 Inscription. ..7 5.5 Scale. .8 5.6 Limits. .8 Annex A (informative) Examples of flow diagrams for process plants .10 Bibliography .16 iii se with ISt ed without license from IHS Not for Resale