1、The Authoritative Resource for Safe WaterANSI/AWWA C218-08(Revision of ANSI/AWWA C218-02)AWWA StandardEffective date: Oct. 1, 2008.First edition approved by AWWA Board of Directors Nov. 1, 1991.This edition approved Jan. 27, 2008.Approved by American National Standards Institute Aug. 4, 2008.Liquid
2、Coating Systems for the Exterior of Aboveground Steel Water Pipelines and Fittings6666 West Quincy AvenueDenver, CO 80235-3098T 800.926.7337www.awwa.orgAdvocacyCommunicationsConferencesEducation and TrainingScience and TechnologySectionsiiAWWA StandardThis document is an American Water Works Associa
3、tion (AWWA) standard. It is not a specification. AWWA standardsdescribe minimum requirements and do not contain all of the engineering and administrative information normallycontained in specifications. The AWWA standards usually contain options that must be evaluated by the user of thestandard. Unt
4、il each optional feature is specified by the user, the product or service is not fully defined. AWWApublication 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 entirely voluntary. This stan
5、dard does not supersede or takeprecedence over or displace any applicable law, regulation, or codes of any governmental authority. AWWA standardsare intended to represent a consensus of the water supply industry that the product described will provide satisfactoryservice. When AWWA revises or withdr
6、aws this standard, an official notice of action will be placed on the first page ofthe classified advertising section of Journal AWWA. The action becomes effective on the first day of the month followingthe month of Journal AWWA publication of the official notice.American National StandardAn America
7、n National Standard implies a consensus of those substantially concerned with its scope and provisions. AnAmerican National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. Theexistence of an American National Standard does not in any respect preclude an
8、yone, whether that person hasapproved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or proceduresnot conforming to the standard. American National Standards are subject to periodic review, and users are cautionedto obtain the latest editions. Producers
9、 of goods made in conformity with an American National Standard areencouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that thegoods are produced in conformity with particular American National Standards.CAUTION NOTICE: The American National
10、Standards Institute (ANSI) approval date on the front cover of this standardindicates completion of the ANSI approval process. This American National Standard may be revised or withdrawn atany time. ANSI procedures require that action be taken to reaffirm, revise, or withdraw this standard no later
11、than fiveyears from the date of publication. Purchasers of American National Standards may receive current information on allstandards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York,NY 10036; (212) 642-4900.All rights reserved. No part of
12、 this publication may be reproduced or transmitted in any form or by any means, electronicor mechanical, including photocopy, recording, or any information or retrieval system, except in the form of briefexcerpts or quotations for review purposes, without the written permission of the publisher. Cop
13、yright 2008 by American Water Works AssociationPrinted in USAiiiCommittee PersonnelThe Steel Water Pipe-Manufacturers Technical Advisory Committee (SWPMTAC) TaskGroup on updating ANSI/AWWA C218 had the following personnel at the time:Frank Rampton, ChairM. Bauer, Tnemec Company Inc., North Kansas Ci
14、ty, Kan. (AWWA)A. Libertore, Madison Chemical Industries Inc., Milton, Ont. (AWWA)L. McKinney, Womble Company Inc., Houston, Texas (AWWA)R. Mielke, Northwest Pipe Company, Raleigh, N.C. (AWWA)R. Newby, ICI Devoe Coatings, Mandeville, La. (AWWA)F. Rampton, Trenton Corporation, Ann Arbor, Mich. (AWWA)
15、G. Smith, Northwest Pipe Company, Poway, Calif. (AWWA)H.R. Stoner, Consultant, North Plainfield, N.J. (AWWA)The AWWA Standards Committee on Steel Pipe, which reviewed and approved this stan-dard, had the following personnel at the time of approval:John H. Bambei Jr., ChairGeorge J. Tupac, Vice-Chair
16、Dennis Dechant, SecretaryGeneral Interest MembersJ.B. Allen,*Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA)W.R. Brunzell, Brunzell Associates Ltd., Skokie, Ill. (AWWA)R.L. Coffey, HDR Engineering Inc., Omaha, Neb. (AWWA)H.E. Dunham, MWH Inc., Bothell, Wash. (AWWA)S.N. Foellmi, Black the type
17、s of volatile organic compound (VOC) allowancespermitted by regulatory agencies; and regulatory requirements for lead abatement.The paint and coating systems in this standard are designed to assist the user inproducing specifications to meet these needs.I.B. History. In November 1986, the AWWA Stand
18、ards Council authorizedAWWAs Steel Pipe Committee to develop a new standard for coatings to be used onaboveground steel water pipe exposed to the atmosphere. The first edition of thisstandard was published as ANSI/AWWA C218-91, Standard for Coating the Exteriorof Aboveground Steel Water Pipelines an
19、d Fittings, with an effective date of Nov. 1,1991. Subsequent editions of this standard were approved by the AWWA Board ofDirectors on June 17, 1995, Jan. 24, 1999, and June 16, 2002. This edition wasapproved Jan. 27, 2008.I.C. Acceptance. This standard has no applicable information for this section
20、.II. Special Issues.II.A. Advisory information on product use. This standard defines the perfor-mance and quality of external pipe coatings and coating systems designed to protectand prevent atmospheric corrosion. This standard applies to the exterior coating ofaboveground steel water pipelines and
21、the associated fittings installed aboveground,outdoors, or inside an associated pump station, valve chamber, or other waterfacilities. The coating systems cited in this standard are not all-inclusive but are thosemost commonly used with an accepted performance record. Before selecting andspecifying
22、any of these coating systems, the purchaser should determine theirsuitability for the intended service.xII.A.1. General. This standard presents several alternative coating systemscurrently in use in the water industry, often serving dual functions of corrosionprotection and aesthetics. Another funct
23、ion of coating systems may be to color codethe pipe to identify the type of service.Most coating manufacturers are reformulating their coatings to comply withcurrent federal, state or provincial, and local environmental regulations. Some of thecoatings discussed in this standard have been used succe
24、ssfully as solvent-basecoatings for the last 20 to 30 years but are now available as water-based coatings.Others have been reformulated to reduce the amount of solvents, resulting incoatings with much lower VOCs. In some cases, high-solids coatings have beendeveloped in which the solids content exce
25、eds 80 percent and may reach 100 percent.Primers are being reformulated to remove heavy metals and toxic inhibitors.In many instances, these changes have altered the application, curing, adhesion,and inhibiting characteristics of coating systems. The manufacturer should beconsulted for the technical
26、 data and material safety data sheets, which provide theprospective user with the information necessary to select the coating system that bestsatisfies the purchasers requirements.II.A.2. Materials. Code of Federal Regulations 29,*LaborPart 1910, Occu-pational Safety and Health Administration (OSHA)
27、 regulations establish restrictivelimits on the constructor regarding inhaling or absorbing lead- and chromate-bearingpigments and solvents through the skin. This regulation refers to shop applications,and it can significantly increase the cost of shop coating applications.Whenever coating materials
28、 are referenced to federal, military, or other standards,the reference identifies a generic type of coating material or system.II.A.3. Selecting coating systems. Several generic coating systems (see Table 1)are included in this standard, because no single coating or coating system isappropriate for
29、all service applications. Often it is impractical for an occasionalcoatings user to make sufficient laboratory tests to verify and compare the relativeperformance characteristics of various coating systems to a given set of performancecriteria. Consequently, it is necessary for the purchaser to cons
30、ider the atmosphericand environmental conditions of service to which the coating or coating system willbe exposed. Refer to Section 6 and Table 3, SSPCPainting Manual Vol. 2, Systems*Available from the US Government Printing Office, Superintendent of Documents, Washington,DC 20402.SSPC: The Society
31、for Protective Coatings, 40 24th Street, 6th Floor, Pittsburgh, PA 15222.xiand Specifications, eighth edition (2000), chapter 1, for definitions of atmosphericand environmental conditions of service.The coatings listed in this standard have been used extensively and have providedexcellent corrosion
32、protection and weathering endurance. In recent years, thedevelopment of new polymers, pigments, and solvents has contributed to the rapidadvancement of materials technology for painting and coating of steel structures.These advancements, coupled with regulatory agency concerns about air pollution by
33、VOCs, have led to the development of many new paint formulations. Although notlisted in this standard, many of these new products provide performance equal to orbetter than the systems presented in this standard.III. Use of This Standard. It is the responsibility of the user of an AWWAstandard to de
34、termine that the products described in that standard are suitable for usein the particular application being considered. III.A. Purchaser Options and Alternatives. The following items should be spec-ified by the purchaser:1. Standard used, that is, ANSI/AWWA C218, Liquid Coating Systems for theExter
35、ior of Aboveground Steel Water Pipelines and Fittings, of latest revision.2. Any exceptions to the standard that may be required.3. Diameter, length, and location of the pipeline.4. Coating system to be supplied (Sec. 4.2).5. Color, if special color is specified (Sec. 4.2.2, 4.2.3, 4.2.4, 4.2.6, and
36、 4.2.7).6. Optional four-coat system (Sec. 4.2.2).7. Optional two-coat system (Sec. 4.2.5 and 4.2.6).8. Verification of film thickness of the coating or coating system (Sec. 4.3.2.4).9. Surface preparation (Sec. 4.4).10. Previously coated pipe (Sec. 4.4.1.2).11. Requirements for visual comparative s
37、tandards for blast cleaning (Sec.4.4.2.1).12. Application (Sec. 4.5).13. Coating of special pipe fittings and appurtenances (Sec. 4.5.12).14. Inspection (Sec. 5.1).15. Adhesion test procedure (Sec. 5.2.4.1).16. Stacking (Sec. 6.1.1).17. Affidavit of compliance, if required (Sec. 6.3).III.B. Modifica
38、tion to Standard. Any modification of the provisions, defini-tions, and terminology in this standard must be provided by the purchaser.xiiIV. Major Revisions. Major revisions made to the standard in this editioninclude the following:1. Reduced number of coating systems covered from nine to six.2. De
39、leted Sec. 1.1.1Conditions not covered in this standard.3. Table 1:a. Combined “Four-coat alkyd” with “Three-coat alkyd.”b. Deleted “Three-coat alkyd/silicone alkyd.”c. Deleted “Two- or three-coat epoxy/high-build aliphatic polyurethaneover existing coated substrates.”4. Renumbered coating systems t
40、hroughout the standard.5. Revised Sec. 4.2.2.1, 4.2.3.1, and 4.2.4.1, Materials under Sec. 4.2 CoatingSystems.6. Deleted Sec. 4.4.1.2 on previously coated piping and added new Sec. 4.4.1.2on overcoating.7. A new appendix A has been added to address the selection and use of coatingsystems.V. Comments
41、. If you have any comments or questions about this standard,please call the AWWA Volunteer and Technical Support Group at 303.794.7711,FAX 303.795.7603, write to the group at 6666 West Quincy Avenue, Denver, CO80235-3098, or e-mail at standardsawwa.org.1AWWA StandardANSI/AWWA C218-08(Revision of ANS
42、I/AWWA C218-02)Liquid Coating Systems for the Exterior of Aboveground Steel Water Pipelines and FittingsSECTION 1: GENERALSec. 1.1 ScopeThis standard describes six coating systems designed to protect the exteriorsurfaces of steel pipelines and the associated fittings used by the water supplyindustry
43、 in aboveground locations. The coating systems described may not performor cost the same, but they are presented so that the appropriate coating system can beselected for the site-specific project requirements.1.1.1 Maximum temperatures. The maximum service temperature of thecoating systems listed i
44、n this standard is based on the maximum service temperatureof potable water. Consult the coating manufacturer for conditions and limitations.Sec. 1.2 PurposeThe purpose of this standard is to define the minimum requirements for coatingthe exterior of aboveground steel water pipelines and fittings, i
45、ncluding coatingsystems, surface preparation, coating material information requirements, coatingapplication, inspection, and testing.2 AWWA C218-08Sec. 1.3 ApplicationThis standard can be referenced in specifications for coating or recoating theexterior of aboveground steel water pipelines and fitti
46、ngs. The stipulations of thisstandard apply when this standard has been referenced and then only to coating theexterior of aboveground steel water pipelines and fittings where exterior surfaces arenot in contact with potable water.SECTION 2: REFERENCESThis standard references the following documents
47、. In their latest editions, thesedocuments form a part of this standard to the extent specified within the standard.In any case of conflict, the requirements of this standard shall prevail.ASTM*D16Standard Terminology for Paint, Related Coatings, Materials,and Applications.ASTM D2200Standard Pictori
48、al Surface Preparation Standards for PaintingSteel Surfaces.ASTM D2794Standard Test Method for Resistance of Organic Coatings tothe Effects of Rapid Deformation (Impact).ASTM D4541Standard Test Method for Pull-Off Strength of Coatings UsingPortable Adhesion Testers.ASTM D5064Standard Practice for Co
49、nducting a Patch Test to AssessCoating Compatibility.Code of Federal Regulations 29, LaborParts 1910, Occupational Safety andHealth Administration (OSHA).Fed. Spec. TT-E-489Enamel, Alkyd, Gloss (for Exterior and InteriorSurfaces).Fed. Spec. TT-P-320Pigment, Aluminum: Powder and Paste for Paint.Fed. Spec. TT-V-81Varnish; Mixing for Aluminum Paint.*ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428.Available from US Government Printing Office, Superintendent of Documents, Washington, DC20402.US Government Defense Printing Service Detachment Office, Cus
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