1、AWWA Standard SM Ductile-Iron Pipe, Centrifugally Cast Effective date: June 1, 2017. First edition approved by AWWA Board of Directors 1965. This edition approved Jan. 14, 2017. Approved by American National Standards Institute Feb, 14, 2017. ANSI/AWWA C151/A21.51-17 (Revision of ANSI/AWWA C151/A21.
2、51-09) Copyright 2017 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 inf
3、ormation normally contained 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 pub- lication of a standard does not constitute endors
4、ement of any product or 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 i
5、ntended to represent a consensus 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 Associatio
6、n. The action becomes effective on the first day of the month following the month of Journal American 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 provision
7、s. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the 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, purchasi
8、ng, or using products, processes, or proce - dures not conforming to the standard. American National Standards are subject to periodic review, and users are cau- tioned to obtain the latest editions. Producers of goods made in conformity with an American National Standard are encouraged to state on
9、their own responsibility in advertising and promotional materials or on tags or labels that the goods are 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 indicate
10、s 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 reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American National Stand
11、ards 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 10036; 212.642.4900; or emailing infoansi.org. hours of work by your fellow water professionals. Revenue from the sales of this AWWA
12、material supports ongoing 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: 978-1-62576-219-1 eISBN-13, electronic: 978-1-61300-419-7
13、DOI: http:/dx.doi.org/10.12999/AWWA.C151.17 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 quotati
14、ons for review purposes, without the written permission of the publisher. Copyright 2017 by American Water Works Association Printed in USA . iii Committee Personnel Subcommittee 1, Pipe, which reviewed this standard, had the following personnel at the time: Maury D. Gaston, Chair General Interest M
15、embers M.B. Horsley, Horsley Engineering LLC, Overland Park, Kan. (AWWA) S.M. Passarelli,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) J.R. Plattsmier, HDR Engineering Inc., Denver, Colo. (AWWA) P.A. Selig, consultant, Vestavia, Ala. (DIPRA) K.E. Wilson, Atkins, Tampa, Fla. (AWWA) L.C. Ya
16、tes, McGoodwin, Williams however, it continues to maintain its representation on AWWA Committee A21. The present scope of AWWA Committee A21 activity is the development of stan - dards and manuals addressing ductile-iron pressure pipe for water and other liquids, and ductile-iron and gray-iron fitti
17、ngs for use with such pipe. These standards and manuals include design, dimensions, materials, coatings, linings, joints, accessories, and methods of inspection and testing. * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2017 American Water
18、Works Association. All Rights Reserved. x The work of AWWA Committee A21 is conducted by subcommittees. The scope of Subcommittee 1, Pipe, includes the periodic review of current Committee A21 stan- dards for pipe, the preparation of revisions and new standards when needed, and other matters pertain
19、ing to pipe standards. The first edition of ANSI/AWWA C151/A21.51, Standard for Ductile-Iron Pipe for Water and Other Liquids, was issued in 1965. Subsequent revisions to ANSI/AWWA C151/A21.51 were prepared by the AWWA Standards Committee and approved by the AWWA Board of Directors in 1971, 1976, 19
20、81, 1986, 1991, 1995, 2002, and 2009. This edition of C151.A21.51 was approved on Jan. 14, 2017. I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consens
21、us standards and a certification program for direct and indirect drinking water additives. Other members of the original consortium included the Water Research Foundation (formerly AwwaRF) and the Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association (A
22、WWA) and the Association of State Drinking Water Administrators (ASDWA) joined later. In the United States, authority to regulate products for use in, or in contact with, drinking water rests with individual states.* Local agencies may choose to impose requirements more stringent than those required
23、 by the state. To evaluate the health effects of products and drinking water additives from such products, state and local agencies may use various references, including 1. Specific policies of the state or local agency. 2. Two standards developed under the direction of NSF : NSF/ANSI 60, Drinking W
24、ater Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. 3. Other references, including AWWA standards, Food Chemicals Codex, Water Chemicals Codex, and other standards considered appropriate by the state or local agency. Various certification organiza
25、tions may be involved in certifying products in accor- dance with NSF/ANSI 61. Individual states or local agencies have authority to accept * Persons outside the United States should contact the appropriate authority having jurisdiction. NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Both publications available from National Academy of Sciences, 500 Fifth Street, NW, Washington, DC 20001. Copyright 2017 American Water Works Association. All Rights Reserved.
