Please read this IMPORTANT information before reading any further pages of this publication.

This publication should not be printed as it is an e-book in which there are many links to other information. The information found from the links should be read as if it was part of this book – note that these areas are highlighted in bold. There are other links which are not mandatory but may be useful and these are not in bold.

This publication has been provided for your personal use only.

As each copy of this book is distributed, the name of the person it has been issued to is recorded therefore allowing its use to be monitored.

The book has been produced for the personal use of the learner to which this book has been issued. It should not be used as your training delivery resource and not be distributed to others as this would be an infringement on the terms and conditions in the use of this publication and an infringement of its copyright. The Environment Study Centre has adopted a proactive approach to monitoring the circulation of this publication. The Environment Study Centre will take legal redress should this book be found to be circulated, or used beyond what is permitted under terms and conditions in the use of the book. The Environment Study Centre has already taken legal redress to others that have infringed these terms and conditions, and will not hesitate to do so at any time in the future.

Official notice:

© Environment Study Centre – All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission in writing from the Environment Study Centre. The Environment Study Centre has made every effort to ensure that the information contained within this publication is accurate. Its contents should be used as guidance material only and not as a replacement for current regulations or existing standards.

Images copyright Edwards Hart Ltd unless from another source as indicated.

Each issue of this book has been issued to a limited number of individuals for their personal use only, primarily as support in taking the 2 day retrofit course. This book must not be passed onto others and not made available for use by others.