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ANSI/AWWA

C225-20

(Revision of ANSI/AWWA C225-14)

eal crop marks

Fused Polyolefin Coatings for Steel Water Pipe

Effective date: July 1, 2020.

First edition approved by Board of Directors Jan. 19, 2003. This edition approved Jan. 23, 2020. Approved by American National Standards Institute Feb. 6, 2020.

SM

Since 1881

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 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 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 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 consensus 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 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 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, purchasing, or using products, processes, or procedures not conforming to the standard. American National 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 are 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 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 writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; 212.642.4900; or e-mailing [email protected].

All rights reserved. No part of this publication may be reproduced or transmitted 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. Please send any requests or questions to [email protected].

ISBN-13, print: 978-1-64717-015-8

ISBN-13, electronic: 978-1-61300-555-2 DOI: http://dx.doi.org/10.12999/AWWA.C225.20

All rights reserved. No part of this publication may be reproduced or transmitted 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 © 2020 by American Water Works Association Printed in USA

ii Copyright © 2020 American Water Works Association. All Rights Reserved

Committee Personnel The Steel Water Pipe Manufacturer’s Technical Advisory Committee (SWPMTAC) Task Group for AWWA C225, which reviewed this standard, had the following personnel at the time: Sam Thomas, Chair Larry McKinney, Vice Chair B. Buchanan, Seal For Life, Toronto, Ont. A. Fletcher, Pentair, Melbourne, Australia D. Libby, Chase Corporation, Westwood, Mass. L. McKinney, Womble Company Inc., Houston, Tex. R.N. Satyarthi, Baker Coupling Company Inc., Los Angeles, Calif. S. Thomas, Liberty Coatings, Pelham, N.H. The AWWA Standards Committee on Steel Pipe, which reviewed and approved this standard, had the following personnel at the time of approval: John H. Bambei Jr., Chair Bob Card, Vice Chair John Luka, Secretary General Interest Members S.A. Arnaout (alternate), Stantec, Dallas, Tex. J.H. Bambei Jr., Bambei Engineering Services, Arvada, Colo. R.J. Card, Lockwood, Andrews & Newnam, Inc., Houston, Tex. R.L. Coffey, HDR Engineering Inc., Omaha, Neb. R.L. Gibson, Freese and Nichols Inc., Fort Worth, Tex. M.D. Gossett (alternate), HDR, Denver, Colo. M.B. Horsley (alternate), Horsley Engineering LLC, Overland Park, Kans. R. Issa, AECOM, McKinney, Tex. C.H. Kirby (alternate), Lockwood, Andrews & Newnam, Inc., Houston, Tex. R.A. Kufaas, Norske Corrosion & Inspection Services Ltd., Surrey, B.C. J.L. Mattson, Corrosion Control Technologies, Sandy, Utah A. Murdock, Jacobs Engineering, Salt Lake City, Utah R. Ortega, Aurora Technical Services, Houston, Tex. E.S. Ralph (liaison, nonvoting), Standards Engineer Liaison, AWWA, Denver, Colo. iii Copyright © 2020 American Water Works Association. All Rights Reserved

A.E. Romer (alternate), AECOM, Orange, Calif. J.R. Snow, Stantec, Denver, Colo. A.M. Stanton, Black & Veatch, Los Angeles, Calif. W.R. Whidden, Woolpert, Orlando, Fla. Producer Members H.R. Bardakjian, Consultant, Glendale, Calif. D. Dechant, Dechant Infrastructure Service, Aurora, Colo. D.W. Dunker, Thompson Pipe Group, Grand Prairie, Tex. W.B. Geyer, Steel Plate Fabricators Associates, Lake Zurich, Ill. B.D. Keil, Northwest Pipe Company, Draper, Utah J.L. Luka, American SpiralWeld Pipe Company, Columbia, S.C. R. Mielke (alternate), Northwest Pipe Company, Raleigh, N.C. G.F. Ruchti (alternate), Consultant, Punta Gorda, Fla. B. Simpson (alternate), American Cast Iron Pipe Company, Birmingham, Ala. C.C. Sundberg, Victaulic, Issaquah, Wash. R. Wu (alternate), Thompson Pipe Group, Grand Prairie, Tex. User Members L. Adams, US Bureau of Reclamation, Denver, Colo. G.A. Andersen, New York City Bureau of Water Supply, Little Neck, N.Y. B. Cheng, Metro Vancouver, Burnaby, B.C. B. Fountain, San Diego County Water Authority, San Diego, Calif. J. Garcia (alternate), Metropolitan Water District of Southern California, La Verne, Calif. M. Garcia (liaison, nonvoting), Standards Council Liaison, Denver Water, Denver, Colo. S. Hattan, Tarrant Regional Water District, Fort Worth, Tex. M. Lobik, Springfield Water & Sewer Commission, Springfield, Mass. T. Peng, Metropolitan Water District of Southern California, Los Angeles, Calif. V. Scutelnicu, Los Angeles Department of Water & Power, Los Angeles, Calif. M. Turney (alternate), Denver Water, Denver, Colo.

iv Copyright © 2020 American Water Works Association. All Rights Reserved

Contents 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

4.6 Coating Repair................................. 9

Foreword I Introduction..................................... vii I.A Background...................................... vii

4.7 Field Joints—Welded and Non-Welded............................... 10

I.B History............................................. vii

4.8 Field Procedures............................... 10

II

Special Issues.................................... vii

5 Verification

III

Use of This Standard........................ vii

5.1 Coating Materials Prequalification.......................... 11

III.A Purchaser Options and Alternatives................................ vii

5.2 Requirements of Coating System...... 11

III.B Modification to Standard................. viii

5.3 Quality Assurance and Records........ 13

Major Revisions................................ viii

5.4 Inspection and Testing by the Purchaser.................................... 13

IV

V Comments....................................... ix

5.5 Quality Control Requirements of Applied Coating System............. 13

Standard 1 General

5.6 Rejection.......................................... 15

1.1 Scope .............................................. 1

6 Delivery

1.2 Purpose............................................ 2

6.1 Marking........................................... 16

1.3 Application....................................... 2

6.2 Packaging and Shipping................... 16

2 References....................................... 2

6.3 Affidavit of Compliance................... 16

3 Definitions...................................... 3

Tables

4 Requirements

1

4.1 Equipment....................................... 4

2

4.2 Materials and Workmanship............. 4 4.3 Coating System................................ 4

3

4.4 Surface Preparation........................... 7

4

4.5 Coating Application......................... 8

Prequalification Requirements of Inner-Layer Tape........................ 5 Prequalification Requirements of Outer-Layer Tape....................... 5 Prequalification Requirements of Total Coating System................. 5 Quality Control Requirements of Applied Coating System............. 6

v Copyright © 2020 American Water Works Association. All Rights Reserved

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Copyright © 2020 American Water Works Association. All Rights Reserved

Foreword This foreword is for information only and is not a part of ANSI/AWWA C225. I. Introduction. I.A. Background.  This standard describes the minimum material and application requirements for a fused polyolefin coating system to be plant-applied to the exterior of steel water pipe for purposes of underground corrosion protection. Currently, the only fused-type coatings for which significant performance experience in this application has been accumulated are based on polyolefin. I.B. History.  The fused polyolefin coating system has been in existence since approximately 1988. Steel Pipe New Zealand has been applying this system to largediameter water pipe since 1994. With the exception of a few water pipe projects around the world, the remainder of the history of this system has been in the oil and gas industry. The first edition of ANSI/AWWA C225 was approved by the AWWA Board of Directors on Jan. 19, 2003. Subsequent editions were approved on June 24, 2007, and Jan. 19, 2014. This edition was approved on Jan. 23, 2020. II.

Special Issues.  There are no special issues described in this standard.

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. Purchaser Options and Alternatives.  The following items should be specified by the purchaser: 1. Standard used—that is, ANSI/AWWA C225, Fused Polyolefin Coatings for Steel Water Pipe, of latest edition. 2. Any exceptions to the standard that may be required. 3. Diameter, length, and location of pipeline. 4. Location of coating application with reference to environmental considerations. 5. Maximum internal operating temperature of the pipeline (Sec. 1.1.1). 6. Requirements for outdoor storage (Sec. 4.3.2.3). 7. Requirements for ultraviolet-light protection (Sec. 4.3.2.3). 8. Requirements for coating system thickness (Table 4). 9. Requirements for cutback at pipe ends (Sec. 4.5.3.7). 10. Requirements for field-joint coating (Sec. 4.7). 11. Requirements for optional inspection by purchaser (Sec. 5.4). vii Copyright © 2020 American Water Works Association. All Rights Reserved

12. Requirements for coating-system test frequency (Sec. 5.5.3.4). 13. Requirements for delivery (Sec. 6). 14. Requirements for packaging (Sec. 6.2.1). 15. Affidavit of compliance, if required (Sec. 6.3). III.B. Modification to Standard.  Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV. Major Revisions.  Revisions made to this standard in this edition include the following: 1. Sec. III.A Purchaser Options and Alternatives was updated to remove items listed that are now stated as requirements in the standard and items no longer mentioned in the standard. 2. Section 2 References was updated. 3. The definitions for applicator, supplier, and weld seam were added to Sec. 3. 4. Sec. 4.2 Materials and Workmanship was revised and sections on safety and personnel were added to be consistent with other AWWA steel pipe coating standards. 5. The option of using a 100 percent solids (hot melt) adhesive was deleted from Sec. 1.1. Scope and Sec. 4.3.1 System components, item 1, since hot melt adhesives are no longer commercially available. Table 1 and Sec. 4.3.2.2 from the previous edition, which also pertained to 100 percent solids adhesives, were deleted. 6. An increase in nonpolyolefinic backing to 5 percent was included in Table 1, Table 2, and Sec. 4.3.2.2 since the manufacturers increased their limit to 5.0 percent, as the 3.5 percent limit is not reflective of the manufacturer’s capabilities. 7. A requirement for adhesion of the inner-layer tape to primed steel was added to Table 1 and Sec. 5.2.2.8. 8. Table 6 was deleted since the information contained in Table 6 only applies to the applicator and their methodology for application of the tape. 9. Sec. 4.3.3. Tests was deleted since it is redundant, as Sec. 5.1 and Sec. 5.2 cover those requirements. 10. Sec. 4.4 Surface Preparation was revised in a continued effort to establish consistent language between similar AWWA steel pipe coating and lining standards. 11. Sections on special requirements and protection during welding were added to Sec. 4.8 Field Procedures. 12. Sec. 4.5.2 Weld-seam treatment was revised to be consistent with other steel pipe standards, and a requirement for the maximum height of the weld reinforcement was added.

viii Copyright © 2020 American Water Works Association. All Rights Reserved

13. The width of rubber roller to be used was made a requirement in Sec. 4.5.3.3 Application of inner layer. 14. Sec. 5.5.4 Adhesion of outer tape layers was deleted. Adhesion of the inner layer tape was added in Table 1 and Sec. 5.2.2.8, and adhesion of the total tape coating system is required in Sec. 5.5.3, so evaluating the adhesion of the outer layer separately is no longer required. 15. Sec. 6.2 Packaging and Shipping was updated to be consistent with other AWWA steel pipe coating standards. 16. Sec. 6.3 Affidavit of Compliance was modified to include an affidavit for workmanship. Similar language has been added to other AWWA steel pipe coating and lining standards. 17. Units of measure were updated in the tables to be consistent with other steel pipe coating and lining standards. 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 email at [email protected].

ix Copyright © 2020 American Water Works Association. All Rights Reserved

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Copyright © 2020 American Water Works Association. All Rights Reserved

ANSI/AWWA C225-20 (Revision of ANSI/AWWA C225-14)

®

AWWA Standard

Fused Polyolefin Coatings for Steel Water Pipe SECTION 1: Sec. 1.1

GENERAL

Scope This standard describes the materials and application of fused polyolefin coating systems for buried service. This system is applied in pipe coating plants, both portable and fixed, using coating techniques and equipment as recommended by the manufacturer. Typically, these prefabricated, polyolefin coatings are applied as a three-layer system consisting of (1) a liquid adhesive layer, (2) a corrosionprotection inner layer, and (3) a mechanical-protection outer layer. 1.1.1 Maximum temperatures.  This standard is intended for pipe in potable-water service. Therefore, the maximum service temperature of this coating considered in this standard is based on the maximum service temperature of potable water. These coating systems will perform at higher temperatures. Consult the coating manufacturer for conditions and limitations. 1.1.2 Conditions not described in this standard.  This standard does not describe the additional materials and procedures that may be required for difficult conditions, such as those encountered in rocky areas or where soil conditions are known to be severe and in construction of underwater lines, casing pipe, and river crossings. The manufacturer should be consulted for specific recommendations when these conditions exist. 1 Copyright © 2020 American Water Works Association. All Rights Reserved

2 AWWA C225-20

Sec. 1.2

Purpose The purpose of this standard is to provide minimum performance requirements for fused polyolefin coating systems for the exterior of steel water pipelines, including system components, application, inspection, testing, marking, and packaging requirements.

Sec. 1.3

Application This standard or sections of this standard can be referenced in documents for purchasing and receiving fused polyolefin coating systems for the exterior of steel water pipelines. This standard can be used as a guide for applying, inspecting, and testing fused polyolefin coating systems for the exterior of steel water pipelines. The stipulations of this standard apply when this document has been referenced and only to fused polyolefin coating systems for the exterior of steel water pipelines.

SECTION 2:

REFERENCES

This standard references the following documents. In their latest editions, these documents form a part of this standard to the extent specified within this standard. In any case of conflict, the requirements of this standard shall prevail. ANSI*/AWWA C203—Coal-Tar Protective Coatings and Linings for Steel Water Pipe. ANSI/AWWA C209—Tape Coatings for Steel Water Pipe and Fittings. ANSI/AWWA C216—Heat-Shrinkable Cross-Linked Polyolefin Coatings for Steel Water Pipe and Fittings. ANSI/AWWA C604—Installation of Buried Steel Water Pipe—4 In. (100 mm) and Larger. ASTM† D149—Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies. ASTM D570—Standard Test Method for Water Absorption of Plastics. ASTM D1000—Standard Test Methods for Pressure-Sensitive AdhesiveCoated Tapes Used for Electrical and Electronic Applications. ASTM D4218—Standard Test Method for Determination of Carbon Black Content in Polyethylene Compounds by the Muffle-Furnace Technique. * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. † ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.

Copyright © 2020 American Water Works Association. All Rights Reserved

FUSED POLYOLEFIN COATINGS FOR STEEL WATER PIPE 3

ASTM D4417—Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel. ASTM E96—Standard Test Methods for Water Vapor Transmission of Materials. ASTM G8—Standard Test Methods for Cathodic Disbonding of Pipeline Coatings. ASTM G14—Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test). ASTM G17—Standard Test Method for Penetration Resistance of Pipeline Coatings (Blunt Rod). NACE* SP0274—High-Voltage Electrical Inspection of Pipeline Coatings. SSPC†-PA 2—Procedure for Determining Conformance to Dry Coating Thickness Requirements. SSPC-SP l—Solvent Cleaning. SSPC-SP 6/NACE No. 3—Commercial Blast Cleaning.

SECTION 3:

DEFINITIONS

The following definitions shall apply in this standard: 1. Abrasive blast cleaning:  Cleaning the pipe surface with sand and/or steel shot, and/or grit. 2. Applicator:  The party that provides the work for applying the coating. 3. Constructor:  The party that provides the work and materials for placement or installation. 4. Manufacturer:  The party that manufactures, fabricates, or produces materials or products. 5. Potable water:  Water that is safe and satisfactory for drinking and cooking. 6. Purchaser:  The person, company, or organization that purchases any materials or work to be performed. 7. Supplier:  The party that supplies material or services. A supplier may or may not be the manufacturer. 8. Weld seam:  A weld or weld joint.

* NACE International, 15835 Park Ten Place, Houston, TX 77084. † The Society for Protective Coatings, 800 Trumbull Drive, Pittsburgh, PA 15205.

Copyright © 2020 American Water Works Association. All Rights Reserved

4 AWWA C225-20

SECTION 4: Sec. 4.1

REQUIREMENTS

Equipment The equipment for blast cleaning and coating shall be designed, manufactured, and maintained in such condition to comply with the procedures and obtain the results prescribed in this standard.

Sec. 4.2

Materials and Workmanship 4.2.1 Materials.  Materials supplied shall meet the provisions of this standard. Material or workmanship that fails to conform to this standard may be rejected at any time before final acceptance. 4.2.2 Safety.  All necessary precautions shall be taken to protect personnel and property from accidents caused by falls, hazardous materials, fire, explosion, and other dangers. The methods and practices prescribed by applicable federal, state, provincial, and local regulations shall be followed. 4.2.3 Personnel.  The entire operation of applying the coating system shall be performed by personnel trained in the application of the fused polyolefin coating system.

Sec. 4.3

Coating System 4.3.1 System components.  The prefabricated fused polyolefin coating system shall be at least three layers consisting of the following: 1. A liquid adhesive layer. 2. An inner layer for corrosion protection. 3. An outer layer for mechanical protection. The inner-layer corrosion protection and outer-layer mechanical protection shall be in the form of prefabricated material in rolls. The properties of the entire system shall conform to the appropriate values listed in Tables 1 through 4. 4.3.2 Component requirements. 4.3.2.1 Liquid adhesive.  The liquid adhesive shall consist of a mixture of suitable rubber and heat or thermal activated polymeric resins and a solvent. The liquid adhesive shall be applied to the properly prepared pipe surface before application of the inner-layer corrosion protection. The liquid adhesive shall provide a bonding medium between the pipe surface and the inner-layer corrosion protection and shall be supplied by the manufacturer that supplies the inner layer. The components of the liquid adhesive shall not settle in the container to form a cake or sludge that cannot be easily incorporated by hand or mechanical agitation, and it shall have good machine-application properties. Copyright © 2020 American Water Works Association. All Rights Reserved

FUSED POLYOLEFIN COATINGS FOR STEEL WATER PIPE 5

Table 1

Prequalification requirements of inner-layer tape Requirement Property

Width deviation

Thickness Ratio of adhesive relative to total inner-layer tape thickness, t Water absorption (24 h) Water-vapor transmission Dielectric strength Insulation resistance Breaking strength Elongation Nonpolyolefinic backing material, % by weight Adhesion to primed steel

Table 2

Minimum

Maximum

Test Method

–5% of width or –¼ in. (–6 mm), whichever is smaller 24 mil (610 µm) 40% of total t

+5%

Sec. 5.2.1.1

— 60% of total t

Sec. 5.2.1.2 Sec. 5.2.1.2

0.2% by wt 0.10 g/(h·m2) — — —

Sec. 5.2.2.1 Sec. 5.2.2.2 Sec. 5.2.2.3 Sec. 5.2.2.4 Sec. 5.2.2.5

— 5.0%

Sec. 5.2.2.6 Sec. 5.2.2.7 Sec 5.2.2.8

— — 450 V/mil 1,000,000 megohms 45 lbf/in. width (7.9 N/mm width) 200% — 32 lbf/in. width (5.6 N/mm width)

Prequalification requirements of outer-layer tape Requirement Property

Minimum

Maximum

Test Method

+5%

Sec. 5.2.1.1

— —

Sec. 5.2.1.2 Sec. 5.2.2.3 Sec. 5.2.2.5

Elongation Nonpolyolefinic backing material, % by weight

–5% of width or –¼ in. (–6 mm), whichever is smaller 24 mil (610 µm) 450 V/mil 65 lbf/in. width (11.4 N/mm width) 200% —

— 5.0%

Sec. 5.2.2.6 Sec. 5.2.2.7

Minimum

Maximum

Test Method

450 V/mil 50 lbf-in. (5.6 N-m) —

— —