AWWA B550-2017 Calcium Chloride.pdf

1、AWWA Standard SM Calcium Chloride Effective date: June 1, 2017. First edition approved by AWWA Board of Directors June 23, 1985. This edition approved Jan. 14, 2017. Approved by American National Standards Institute Oct. 13, 2016. ANSI/AWWA B550-17 (Revision of ANSI/AWWA B550-10) Copyright 2017 Amer

2、ican Water Works Association. All Rights Reserved. ii AWWA Standard This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describe minimum requirements and do not contain all of the engineering and administrative information normally containe

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5、sensus of the water industry that the product described will provide satisfactory ser- vice. When AWWA revises or withdraws this standard, an official notice of action will be placed on the first page of the Official Notice section of Journal American Water Works Association. The action becomes effe

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11、nformation on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; 212.642.4900; or emailing infoansi.org. hours of work by your fellow water professionals. Revenue from the sales of this AWWA material supports ongoing

12、product development. Unauthorized distribution, either electronic or photocopied, is illegal and hinders AWWAs mission to support the water community. This AWWA content is the product of thousands of ISBN-13, print: 978-1-62576-217-7 eISBN-13, electronic: 978-1-61300-417-3 DOI: http:/dx.doi.org/10.1

13、2999/AWWA.B550.17 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information or retrieval system, except in the form of brief excerpts or quotations for review purposes, w

14、ithout the written permission of the publisher. Copyright 2017 by American Water Works Association Printed in USAiii Committee Personnel The AWWA Standards Committee on Softening and Conditioning Chemicals, which reviewed and approved this standard, had the following personnel at the time of approval: Clyde R. Dugan, Chair General Interest Members W.J. Conlon, Parsons Corporation, Tampa, Fla. (AWWA) N.E. McTigue,* EE write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at standardsawwa.org. Copyright 2017 American Water Works Association. All Rights Reserved.