1、 ANSI/AWWA B505-12 (Revision of ANSI/AWWA B505-05) AWWA Standard Effective date: Aug. 1, 2012. First edition approved by AWWA Board of Directors Jan. 25, 1988. This edition approved Jan. 22, 2012. Approved by American National Standards Institute June 1, 2012. 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 WaterDisodium Phosphate, Anhydrous SM Copyright 2012 American Water Works Association. All Rights Reserved. ii AWWA Standard This document is
3、 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 contained in specifi- cations. The AWWA standards usually contain options that must be evalu
4、ated 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 product type, nor does AWWA test, certify, or approve any product. The use of AWWA sta
5、ndards is entirely 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 satisfa
6、ctory service. 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 effective on the first day of the month following the month of Journal - America
7、n Water Works Association 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
8、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. Ameri- can National
9、Standards 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 a
10、re produced in conformity with particular American National Standards. 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
11、at any 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 writ- ing the American National S
12、tandards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; (212) 642-4900, or emailing infoansi.org. ISBN-13, print: 978-1-58321-895-2 eISBN-13, electronic: 978-1-61300-191-2 ISBN-10, print: 1-58321-895-5 eISBN-10, electronic: 1-61300-191-6 All rights reserved. No part of this public
13、ation 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, without the written permission of the publisher. Copyright 201
14、2 by American Water Works Association Printed in USA Copyright 2012 American Water Works Association. All Rights Reserved. iii Committee Personnel The AWWA Standards Committee on Scale and Corrosion-Control Chemicals, which reviewed and approved this standard, had the following personnel at the time
15、 of approval: Robert A. Ryder, Chair General Interest Members J.H. Bambei Jr.,* Denver Water, Denver, Colo. (AWWA) M.P. Chaulk, CBCL Limited Consultants Ltd., Halifax Regional Municipality, N.S. (AWWA) M.S. McFadden, HDR Engineering Inc., Bellevue, Wash. (AWWA) D. Orozco, Cole & Associates Engineers
16、, Safety Harbor, Fla. (AWWA) R.A. Ryder, Kennedy/Jenks Consultants, San Francisco, Calif. (AWWA) S.J. Posavec,* Standards Group Liaison, AWWA, Denver, Colo. (AWWA) R. Vaidya, Camp Dresser & McKee, Tampa, Fla. (AWWA) Producer Members H.T. Belcher Jr., Corrtrac Systems Corporation, Currituck, N.C. (AW
17、WA) C.P. Principi, Carus Corporation, Belmont, N.C. (AWWA) V.J. Verdone, Pristine Water Solutions Inc., Waukegan, Ill. (AWWA) Y. Zhang, DXV Water Technologies Inc., Tustin, Calif. (AWWA) User Members E.J. Kiefer, North Shore Water Commission, Milwaukee, Wis. (AWWA) R.M. Powell, Pinellas County Utili
18、ties, Largo, Fla. (AWWA) J.C. Thurrott, City of Daytona Beach, Daytona Beach, Fla. (AWWA) * Liaison, nonvoting Copyright 2012 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 2012 American Water Works Association. All Rights Reserved. v Contents All AWW
19、A standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. SEC. PAGESEC. PAGE Foreword I Introduction. . vii I.A Background . vii I.B History vii I.C Acceptance vii II Special Issues. . viii II.A Storage and Handling Precauti
20、ons . viii III Use of This Standard ix III.A Purchaser Options and Alternatives ix III.B Modification to Standard . ix IV Major Revisions ix V Comments . ix Standard 1 General . 1 1.1 Scope 1 1.2 Purpose . 1 1.3 Application 1 2 References 2 3 Definitions . 2 4 Requirements 4.1 Physical Requirements
21、. 3 4.2 Chemical Requirements 3 4.3 Impurities 4 5 Verification 5.1 Sampling . 4 5.2 Test Procedures . 5 5.3 Notice of Nonconformance . 8 6 Delivery 6.1 Marking 8 6.2 Packaging and Shipping 9 6.3 Affidavit of Compliance or Certified Analysis 9 Copyright 2012 American Water Works Association. All Rig
22、hts Reserved. This page intentionally blank. Copyright 2012 American Water Works Association. All Rights Reserved. vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA B505. I. Introduction. I.A. Background. Disodium phosphate, anhydrous, is a manufactured product obtai
23、ned by combining a comparatively pure chemical, soda ash (Na 2 CO 3 ) or caustic soda (NaOH), with phosphoric acid (H 3 PO 4 ). The resulting product is dried, sized, and packaged. Disodium phosphate, anhydrous, is a white, crystalline solid, commercially avail- able in granular and powder forms. A
24、solution of 1 lb/gal (0.12 kg/L) has a specific gravity of approximately 1.1 at 25C (77F). For information on safety, refer to material safety data sheets (MSDS) available from the supplier or manufacturer. I.B. History. In 1985, the AWWA Standards Committee on Scale and Corrosion-Control Chemicals
25、recognized the need for a standard for disodium phosphate, anhydrous, used as a corrosion-control product in the treatment of potable water. The AWWA Standards Council authorized development of the standard on Nov. 18, 1985, and the first edition was approved on Jan. 25, 1988. The second edition of
26、the standard was approved on Jan. 22, 1995. The third edition of the standard was approved on Jan. 21, 2001. The fourth edition of ANSI/AWWA B505 was approved by the AWWA Board of Directors on June 12, 2005. This edition was approved on Jan. 22, 2012. I.C. Acceptance. In May 1985, the US Environment
27、al Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct and indirect drinking water additives. Other members of the original consortium included the
28、Water Research Foundation (formerly AwwaRF), and the Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association and the Association of State Drinking Water Administrators (ASDWA) joined later. In the United States, authority to regulate products for use in,
29、or in contact with, drinking water rests with individual states. Local agencies may choose to impose * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Water Research Foundation, 6666 West Quincy Avenue, Denver, CO 80235 Persons outside the United States
30、should contact the appropriate authority having jurisdiction. Copyright 2012 American Water Works Association. All Rights Reserved. viii requirements more stringent than those required by the state. To evaluate the health effects of products and drinking water additives from such products, state and
31、 local agencies may use various references, including two standards developed under the direction of NSF, NSF*/ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. Various certification organizations may be involved in certifying
32、 products in accor- dance with NSF/ANSI 60. Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdiction. Accreditation of certi- fication organizations may vary from jurisdiction to jurisdiction. Annex A, “Toxicology Review and Evalu
33、ation Procedures,” to NSF/ANSI 60 does not stipulate a maximum allowable level (MAL) of a contaminant for substances not regulated by a USEPA final maximum contaminant level (MCL). The MALs of an unspecified list of “unregulated contaminants” are based on toxicity testing guidelines (noncarcinogens)
34、 and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. ANSI/AWWA B505 addresses additives requirements in Sec. 4.3.3 of the standard. The transfer of contaminants from chemicals to processed water or to residual solids
35、 is becoming a problem of greater concern. The language in Sec. 4.3.3 is a recommenda- tion only for direct additives used in the treatment of potable water to be certified by an accredited certification organization in accordance with NSF/ANSI 60 Drinking Water Treatment ChemicalsHealth Effects. Ho
36、wever, users of the standard may opt to make this certification a requirement for the product. Users of this standard should consult the appropriate state or local agency having jurisdiction in order to 1. Determine additives requirements, including applicable standards. 2. Determine the status of c
37、ertifications by parties offering to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certification. II. Special Issues. II.A. Storage and Handling Precautions. Disodium phosphate, anhydrous, is relatively hygroscopic and will absorb wat
38、er. It must be stored under dry conditions. Exposure to humidity produces a caked condition. This results in poor flow and caking that interferes with the rate of dilution and effectiveness of the product. Refer to the MSDS available from the manufacturer or supplier for additional information. * NS
39、F International, 789 N. Dixboro Road, Ann Arbor, MI 48105. Copyright 2012 American Water Works Association. All Rights Reserved. ix 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 th
40、e particular application being considered. III.A. Purchaser Options and Alternatives. The following information should be provided by the purchaser. 1. Standard usedthat is, ANSI/AWWA B505, Standard for Disodium Phosphate, Anhydrous, of latest revision. 2. Whether compliance with NSF/ANSI 60, Drinki
41、ng Water Treatment ChemicalsHealth Effects, is required. 3. Details of other federal, state, or provincial, and local requirements (Section 4). 4. Physical form(s) and quantity (Sec. 4.1.1). 5. Specific maximum impurity content limits, if required (Sec. 4.3). 6. Whether the purchaser will reject pro
42、duct from containers or packaging with missing or damaged seals. The purchaser may reject product from bulk containers or packages with missing or damaged seals unless the purchasers tests of representative samples, conducted in accordance with Sec. 5.2, demonstrate that the product meets the standa
43、rd. Failure to meet the standard or the absence of, or irregularities in, seals may be sufficient cause to reject a shipment. 7. Form of shipmentbulk or package, type, and size of container (Sec. 6.2). 8. Whether alternative security measures have been adopted to replace or aug- ment the security me
44、asures set out in Sec. 6.2.3 and 6.2.4. 9. Size and type of container to be used (Sec. 6.2). 10. Affidavit of compliance or certified analysis, or both, if required (Sec. 6.3). III.B. Modification to Standard. Any modification of the provisions, definitions, or terminology in this standard must be p
45、rovided by the purchaser. I V. 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 Water Act and other federal regulations (Section 4). 2. Inclusion of a requirement for tamper-evident packagi
46、ng (Sec. 6.2.3 and 6.2.4). V. Comments. If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711, FAX at 303.795.7603, write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098, or e-mail at standardsawwa.org. Copy
47、right 2012 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 2012 American Water Works Association. All Rights Reserved. AWWA Standard 1 ANSI/AWWA B505-12 (Revision of ANSI/AWWA B505-05) Disodium Phosphate, Anhydrous SECTION 1: GENERAl Sec. 1.1 Scope Thi
48、s standard describes disodium phosphate, anhydrous, for use in the treat - ment of potable water, wastewater, and reclaimed water. The product described is an orthophosphate used, as formulated and in blends, to inhibit corrosion of potable water conveyance systems. The product described by this sta
49、ndard is also known as sodium phosphate, dibasic, anhydrous. Sec. 1.2 Purpose The purpose of this standard is to provide minimum requirements for diso- dium phosphate, including physical, chemical, sampling, packaging, shipping, and testing requirements. Sec. 1.3 Application This standard can be referenced in documents for purchasing and receiving disodium phosphate, anhydrous, and can be used as a guide for testing the physical and chemical properties of disodium phosphate, anhydrous, samples. The stipula- tions of this standard apply when th
