1、ANSI/AWWA B511-10 (Revision of ANSI/AWWA B511-05) AWWA Standard Effective date: Aug. 1, 2010. First edition approved by AWWA Board of Directors Jan. 20, 2002. This edition approved Jan. 17, 2010. Approved by American National Standards Institute June 14, 2010. 6666 West Quincy Avenue Advocacy Denver
2、, CO 80235-3098 Communications T 800.926.7337 Conferences www.awwa.org Education and TrainingScience and TechnologySections The Authoritative Resource on Safe WaterPotassium Hydroxide Copyright 2010 American Water Works Association. All Rights Reserved.ii AWWA Standard This document is an American W
3、ater 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 contained in specifi- cations. The AWWA standards usually contain options that must be evaluated by the us
4、er 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 product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is enti
5、rely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, or codes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satisfactory service.
6、 When AWWA revises or withdraws this standard, an official notice of action will be placed on the first page of the classified advertising section of Journal AWWA. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official notice. Ameri
7、can National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An Ameri- can National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard
8、 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 Standards are subject to periodic review, and users are cautioned t
9、o obtain the latest editions. Producers of goods made in conformity with an American National Standard are encouraged to state on their own responsibility in advertis- ing and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Stand
10、ards. Caution n oti Ce : 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 any time. ANSI procedures require that action be taken to reaf
11、firm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 1
12、0036; (212) 642-4900, or e-mailing infoansi.org. 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 qu
13、otations for review purposes, without the written permission of the publisher. Copyright 2010 by American Water Works Association Printed in USA Copyright 2010 American Water Works Association. All Rights Reserved.iii Committee Personnel The AWWA Standards Committee on Softening and Conditioning Che
14、micals, which developed and approved this standard, had the following personnel at the time of approval: Clyde R. Dugan, Chair General Interest Members R.J. Casale,* American Water, Voorhees, N.J. (AWWA) W.J. Conlon, Parsons Brinckerhoff, Tampa, Fla. (AWWA) T.O. Crowley, Carollo Engineers, Lees Summ
15、it, Mo. (AWWA) S.J. Posavec,* Standards Group Liaison, AWWA, Denver, Colo. (AWWA) M.H. Winegard, Consoer Townsend Envirodyne, Wheaton, Ill. (AWWA) Producer Members J. Althouse, Dow Chemical Company, Ludington, Mich. (AWWA) E.W. Coyner, National Lime Association, Arlington, Va. (AWWA) W.B. Huebner, M
16、ine Hill, N.J. (AWWA) J.M. Shepard, Middletown, Del. (AWWA) User Members I. Alvarez, John Preston Water Plant, Hialeah, Fla. (AWWA) C.R. Dugan, Bath, Mich. (AWWA) P.M. Marchand, Providence Water Supply Board, Providence, R.I. (AWWA) G.C. Rosati, City of Mankato Public Utilities, Mankato, Minn. (AWWA
17、) A.T. Segars, MiamiDade Water therefore, the rate of dilution and the method of cooling should be carefully controlled to prevent boiling or splattering of the liquid. Potassium hydroxide can cause severe burns to the skin and eyes; therefore, work- ers handling it must wear complete protective equ
18、ipment, including chemical safety goggles. If the possibility of exposure to potassium hydroxide is high, for example, dur- ing unloading operations, a full-face shield should also be worn. Non-aluminum hard hats are recommended for protection from overhead leaks and splashes. Boots and gloves shoul
19、d be made of polyvinyl chloride or neoprene. Outer clothing should be made of cotton or a suitable synthetic fabric (potassium hydroxide destroys wool and leather). A neoprene apron will provide additional protection. If the possibil- ity of exposure is high, full suits of neoprene or polyvinyl chlo
20、ride are recommended. Shirts should have long sleeves and snug-fitting cuffs. The collars should be buttoned. Trouser bottoms should extend over boot tops. A full-face-piece respirator approved by the National Institute for Occupational Safety and Health (NIOSH) or the Mine Safety and Health Adminis
21、tration (MSHA) for dusts and mists should be worn when handling dry potassium hydroxide. Emergency shower and eyewash units should be located near feeding and pumping equipment, where potassium hydroxide is sampled, and where tank cars or trucks are unloaded. Refer to the material safety data sheets
22、 (MSDSs) available from the vendor or manufacturer for additional information. III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. III.A. Pur
23、chaser Options and Alternatives. The following information should be provided by the purchaser. Copyright 2010 American Water Works Association. All Rights Reserved.x 1. Standard usedthat is, ANSI/AWWA B511, Potassium Hydroxide, of latest revision. 2. Quantity of potassium hydroxide required. 3. Whe
24、ther compliance with NSF/ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, is required. 4. Details of other federal, state or provincial, and local requirements (Sec. 4.1). 5. Type of materialdry or liquid (Sec. 4.3). If dry is ordered, whether ground, flake, crystal, beaded, prilled, or ot
25、her is desired. 6. For liquid potassium hydroxide, the minimum percentage of potassium hydroxide (Sec. 4.3.2). 7. Whether the purchaser will reject product from containers or packaging with missing or damaged seals. The purchaser may reject product from bulk containers or packages with missing or da
26、maged seals unless the purchasers tests of representative samples, conducted in accordance with Sec. 5.2, demonstrate that the product meets the standard. Failure to meet the standard or the absence of, or irregularities in, seals may be sufficient cause to reject the shipment. 8. Whether alternativ
27、e security measures have been adopted to replace or aug- ment the security measures set out in Sec. 6.2.5 and 6.2.6. 9. Form of shipmentbulk or package and the type and size of container (Sec. 6.2). 10. If an affidavit of compliance or certified analysis or both is required (Sec. 6.3). III.B. Modifi
28、cation to Standard. Any modification of the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV. Major Revisions. Major changes made to the standard in this revision include the following: 1. Inclusion of a requirement for compliance with the Safe Drinking
29、Water Act and other federal regulations (Sec. 4.1). 2. Inclusion of a requirement for tamper-evident packaging (Sec. 6.2.5 and 6.2.6). V. Comments. If you have any comments or questions about this standard, please call the AWWA Volunteer and Technical Support Group at 303.794.7711, FAX at 303.795.7603, write to the group at 6666 West Quincy Avenue, Denver, CO 80235- 3098, or e-mail the group at standardsawwa.org. Copyright 2010 American Water Works Association. All Rights Reserved.
