AWWA B702-2018 Sodium Fluorosilicate.pdf
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1、ANSI/AWWA B702-18 (Revision of ANSI/AWWA B702-11) AWWA Standard SM Sodium Fluorosilicate Effective date: July 1, 2018. First edition approved by AWWA Board of Directors May 27, 1954. This edition approved Jan. 20, 2018. Approved by American National Standards Institute Feb. 27, 2018. Copyright 2018
2、American 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 cont
3、ained in specifications. The AWWA standards usually contain options that must be evaluated by the user of the standard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constitute endorsement of any product or
4、product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, or code of any governmental authority. AWWA standards are intended to represent a c
5、onsensus of the water industry that the product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of action will be placed in the Official Notice section of Journal AWWA. The action becomes effective on the first day of the month following
6、the month of Journal AWWA publication of the official notice. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and t
7、he general public. The existence of an American National Standard does not in any respect preclude anyone, whether that person has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National St
8、andards are subject to periodic review, and users are cautioned to obtain the latest editions. Producers of goods made in conformity with an American National Standard are encouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods are
9、 produced in conformity with particular American National Standards. Caution Notice : The American National Standards Institute (ANSI) approval date on the front cover of this standard indicates completion of the ANSI approval process. This American National Standard may be revised or withdrawn at a
10、ny time. ANSI procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of ANSI approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standar
11、ds Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; 212.642.4900; or e-mailing infoansi.org. ISBN-13, print: 978-1-62576-296-2 eISBN-13, electronic: 978-1-61300-477-7DOI: http:/dx.doi.org/10.12999/AWWA.B702.18 All rights reserved. No part of this publication may be reproduced or tra
12、nsmitted in any form or by any means, electronic or mechanical, including scanning, recording, or any information or retrieval system. Reproduction and commercial use of this material is prohibited, except with written permission from the publisher. Copyright 2018 by American Water Works Association
13、 Printed in USA If you are interested in using any part of this publication for training, creating a derivative work, or for any commercial use, written permission from AWWA is required. Please send your request to permissionsawwa.org. Copyright 2018 American Water Works Association. All Rights Rese
14、rved. iii Committee Personnel The AWWA Standards Committee on Fluorides, which reviewed and approved this standard, had the following personnel at the time of approval: H.C. Liang, Chair Gus Navar, Secretary General Interest Members K. Duchon, Centers for Disease Control and Prevention, Atlanta, Ga.
15、 N.J. Edman, *Standards Group Liaison, AWWA, Denver, Colo. R. Hampaul, Indigenous and Northern Affairs Canada, Vancouver, B.C., Canada H.C. Liang, Tetra Tech, Denver, Colo. C. Marcos, Northeast Pump & Instrument, Lunenburg, Mass. M.L. Wentink, Nebraska Health and Human Services Drinking Water Progra
16、m, North Platte, Neb. Producer Members T. L. Fitzgerald, SA Services, LLC, Spring, Tex. J.W. Fulcher, Univar Specialties, Charlotte, N.C. R.L. Horne, Pennco Inc., San Felipe, Tex. M.E. Looney, Solvay Fluorides, Houston, Tex. M.T. Merlo, BHS Specialty Chemical Products, Nampa, Idaho G. Navar, The Mos
17、aic Company, Lithia, Fla. User Members P . Devlin, Peterborough Utilities Group, Peterborough, Ont., Canada M.B. Gilton, T urlock, Calif. L.J. Hammes, Ames Water & Pollution Control Department, Ames, Iowa D.J. Huggins, City of London Water Operations, London, Ont., Canada E.A. Moreno, Gentle Family
18、Dentists, West Liberty, Iowa S. Rezania, City of Minneapolis, Minneapolis, Minn. J.S. T rotter, City of Bloomington Utilities, Bloomington, Ind. C. Wheland, T roy Dept. of Public Utilities, T roy, N.Y. * Liaison, nonvoting Copyright 2018 American Water Works Association. All Rights Reserved. This pa
19、ge intentionally blank. Copyright 2018 American Water Works Association. All Rights Reserved. v Foreword I Introduction. . vii I.A Background . vii I.B History vii I.C Acceptance viii II Special Issues . ix II.A Storage, Handling, and Safety Precautions ix III Use of This Standard . x III.A Purchase
20、r Options and Alternatives . x III.B Modification to Standard xi IV Major Revisions . xi V Comments xi Standard 1 General 1.1 Scope. 1 1.2 Purpose . 1 1.3 Application 1 2 References 2 3 Definitions . 2 4 Requirements 4.1 Physical Requirements . 3 4.2 Chemical Requirements 3 4.3 Impurities 4 5 Verifi
21、cation 5.1 Sampling . 6 5.2 Test Procedures 7 5.3 Notice of Nonconformance . 10 6 Delivery 6.1 Marking 10 6.2 Packaging and Shipping 11 6.3 Affidavit of Compliance or Certified Analysis . 12 Appendix A Sodium Fluorosilicate: Contaminants . 13 Tables 1 Maximum Allowed Concentrations of Impurities in
22、Sodium Fluorosilicate . 5 2 Impurity Analytical Methods . 9 A.1 Sodium Fluorosilicate: Contaminants . 13Contents All AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. SEC. PAGE SEC. PAGE Copyright 2018 American Wa
23、ter Works Association. All Rights Reserved. This page intentionally blank. Copyright 2018 American Water Works Association. All Rights Reserved. vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA B702. I. Introduction. I.A. Background. Community water fluoridation is
24、an effective, safe, and relatively inexpensive way to prevent tooth decay. Sodium fluorosilicate (Na 2 SiF 6 ) is one of several compounds presently being added to drinking water to reduce the incidence of dental cavities. Since the first fluoridation installations during 1945, studies have shown th
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