Chemical engineering drawing symbols - foreword, preface, acknowledgements, contents, introduction

Oct 23, 2026

A reference guide to chemical engineering drawing symbols used across the full design lifecycle of chemical plants, from block diagrams and engineering line diagrams to flowsheet interpretation. It compiles graphic symbols drawn from standard documents and major industrial design practices, explains their intended meanings and typical applications, and highlights how multiple alternatives for the same item reinforce the need for further standardization. The text targets undergraduates, draughtsmen, and process engineers working on plant design projects.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages104

Reading Time4 h 22 min

AccessFree to download

Foreword

Preface

Acknowledgements

Contents

Introduction

Chemical EngineeringDrawing Symbols D.G.Austin George Godwin Limited -London John Wiley &Sons -New York First'published in Great Britain 1979by George Godwin LimitedThe book publishing subsidiary ofThe Builder Group 1-3 Pemberton Row,Fleet StreetLondon EC4P 4HL Copyright ◎1979 by D.G.Austin British Library Cataloguing in Publication Data Austln,DG Chemical engineering drawing symbols. 1.Engineering drawings 2.Signs andsymbols 3.Chemical .engineering I.Title604'.2'66020148.T357 ISBN 0-7114-3318-6(George Godwin Ltd) ISBN 0-470-26601-5 (Halsted Press) Published in the U.S.A.and Canadaby Halsted Press,a Division ofJohn Wiley &Sons Inc.,New York. All rights reserved.No part of this publication may be reproduced,stored in a retrieval system,or transmitted in any form or by any mean's,electronic,mechanical,photocopying,recording or otherwise,withoutthe prior permission of the publisher and copyright owner. Printed in Great Britain byTonbridge Printers Limited # Foreword Throughout all stages of the design of a chemical plant,engineers of manydisciplines communicate by reference to diagrams ranging from the simple blockdiagram,where process alternatives are screened and developed,to thecomprehensive engineering line diagrams from which the plant is planned andfabricated.The graphic symbols employed in these diagrams need to be relativelysimple and versatile,so that they may be easily modified to suit the particulardesign requirement;also their form should be representative of the equipmentthey describe. This useful reference book hascollected together graphic symbols from manystandard documents and other sources and these have been arranged so that theselection of the appropriate symbol for-formulation or interpretation of themany different flowsheets is easily accomplished.The existence of alternativesymbols for the same item emphasises the need for further standar.disation in thisarea and it is hoped that this publication has made a valuable contribution in thisrespect. This book is recommended for undergraduate chemical engineering students,especially those embarking on design project work,and it is believed that it willalso be useful to draughtsmen and process engineers employed in plant designoffices in the chemical industry. G.V.Jeffreys Department.of Chemical EngineeringThe University ofAston in Birmingham Preface Process flow(PFD)and engineering line(ELD)diagrams are the chemical andprocess engineer's basic means of communication during the development.processand project engineering of plants.However.difficulties are frequently encounteredin interpreting or formulating these diagrams.Such problems are primarilyassociated with the layout and use of graphic symbols employed to representplant items and ancillary equipment,including control and instrumentationfeatures of the process. The types of question that arise are: What does this symbol represent? Which type of internals is employed in this distillation column?Does a recognised symbol exist for a plate heat exchanger? Two symbols are available for a diaphragm valve:which is preferred.andwhy? Can it be shown graphically how the valve is actuated.with the type offittings for connection to pipelines? Frequent reference to the various different published systems of symbols toanswer these questions distracts the designer from the continuity of the flowsheet.Moreover.confusion over symbol use and interpretation.as well as being time-consuming.can lead to serious mistakes which may be costly to rectify and.ifthey remain undetected.can result in inefficient or even unsafe plant. Although flowsheets fulfil diverse functions.their chief use is to communicate aprocess design clearly and accurately with the minimum of effort on the part ofthose engaged in producing and interpreting them.The principal objective incompiling this book has been to ease these tasks by providing a comprehensivelist of graphic symbols with examples t

FAQs

What problem does the book address about process flow and engineering line diagrams?

It addresses difficulties in interpreting or formulating PFD and ELD diagrams, especially confusion caused by layout and the use of graphic symbols representing plant items and control or instrumentation features.

Why are standard symbols recommended, and when can alternatives be used?

Standard symbols are recommended wherever possible, but alternatives may be used when a standard symbol is unavailable or when more detailed information must be conveyed.

Who is the book intended to help?

It is recommended for undergraduate chemical engineering students starting design project work, and it is also intended for draughtsmen and process engineers in plant design offices within the chemical industry.

Oct 23, 2026

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