AWWA_C203a-99美国给排水标准(英文)

American Water Works Association 6666 W. Quincy Ave., Denver, CO 80235 (303) 794-771 1 AWWA C203a-99 Addendum to ANSIIAWWA C203-97 Standard for Coal-Tar Protective Coatings and Linings for Steel Water Pipelines-Enamel and Tape-Hot Applied (Approved by the AWWA Board of Directors on Jan. 24, 1999.) P. ix, Sec. III. A, revise Item 22 t o read: 22. If materials only are being purchased according to the requirements of Sec. 4.3 of this standard, then the purchaser shall specify quantities for the following items: (1) primer by type (Sec. 4.3.2); (2) coal-tar enamel by type (Sec. 4.3.3.1 and Table 1); (3) outerwrap (Sec. 4.3.4); and (4) glass-fiber inner mat (Sec. 4.7.3.1). The purchaser should also specify if an affidavit of compliance is required (Sec. 6.3). P. 22, Sec. 4.7.2.4, revise to read: 4.7.2.4 Coal-tar enamel, glass-fiber inner mat, and bonded outerwrap. P. 22, Sec. 4.7.2.4.2, revise to read: 4.7.2.4.2 The construction of this exterior protection shall consist of (1) primer; (2) coal-tar enamel, ' / 3 2 in. * /32 in. (2.4 mm f 0.8 mm) thick; (3) glass-fiber inner mat; (4) coal-tar enamel, ' h in. (0.8 mm> minimum; ( 5 ) bonded outerwrap; and (6) whitewash, water-emulsion latex paint, or kraft-paper finish coat. P. 22, Sec. 4.7.2.4.3, revise to read: 4.7.2.4.3 Glass-fiber inner mat shall conform to the material requirements set forth in Sec. 4.7.3.1. COPYRIGHT American Water Works Association Licensed by Information Handling Services COPYRIGHT American Water Works Association Licensed by Information Handling Services P. 22, Sec. 4.7.2.4.5, revise to read: 4.7.2.4.5 The glass-fiber inner mat shall be of suitable width for smooth, spiral application and shall be of approximately uniform width. The lap of the glass-fiber inner mat shall be not less than '/z in. (13 mm). Glass-fiber inner mat shall be mechanically applied in a continuous end-feed machine, in a lathe-type machine, or by suitable inner mat application equipment. Application shall be simultaneous with the first coat of coal-tar enamel. The roll of glass-fiber inner mat shall be under tension sufficient to embed the mat in the enamel before the latter sets or cools. The glass-fiber inner mat must be placed in the outer third of the first coat of enamel and not pulled through the hot enamel to the metal surface. The second coat of hot coal-tar enamel shall be applied over the glass-fiber inner mat simultaneously with a bonded outerwrap. Glass-fiber inner mat shall be used when two wraps are applied in accordance with Sec. 4.7.2.1. P. 22, Sec. 4.7.2.4.8, revise to read: 4.7.2.4.8 Enamel applied by hand to the exterior of specials or field joints shall be examined for holidays in accordance with Sec. 4.5.3, and holidays shall be repaired prior to the application of the glass-fiber inner mat and subsequent enamel and bonded outerwrap. P. 22, Sec. 4.7.3.1, revise to read: 4.7.3.1 Glass-fiber inner mat. P. 22, Sec. 4.7.3.1.1, revise to read: 4.7.3.1.1 Description. The glass-fiber inner mat shall be a thin, flexible, uniform mat, composed of glass fibers in an open, porous structure, bonded with a suitable inner material that is compatible with hot, coal-tar enamel. The inner mat may be of the reinforced or nonreinforced type. The finished glass-fiber inner mat shall have the following physical characteristics: P. 22, Sec. 4.7.3.1.2, revise to read: 4.7.3.1.2 Appearance. The finished glass-fiber inner mat shall have a smooth surface free from visible defects. P. 22, Sec. 4.7.3.1.4, revise to read: 4.7.3.1.4 Thickness. The finished glass-fiber inner mat shall have a thickness of not less than 13 mils (0.325 mm), as determined by ANSUASTM D146, modified. At 10 equally spaced areas selected for sampling, the thickness shall be measured with an Ames dial reading in units of ten thousandths of an inch. Use a circular foot and anvil, both 1 in.2 (645 mm2) in area, exerting a pressure of 2 lb/in.2 (13.8 Wa). All measurements shall be made in an atmosphere of 50 percent relative humidity and at 73°F ? 4°F (23°C & 2°C). COPYRIGHT American Water Works Association Licensed by Information Handling Services COPYRIGHT American Water Works Association Licensed by Information Handling Services S T D D A W W A C203-ENGL L797 0783350 050bL52 T39 M V P. 22, Sec. 4.7.3.1.4, insert the following after Sec. 4.7.3.1.4: 4.7.3.1.5 Elmendorf tear strength. The glass-fiber inner mat shall have an Elmendorf tear strength in both the longitudinal direction and in the transverse direction of not less than 0.22 lb (100 g) in each case, as determined by TAPP1 T414 in Sec. 5.3.14.1. 4.7.3.1.6 Breaking strength. Non-reinforced glass-fiber inner mat shall have a minimum breaking strength in the longitudinal direction of 4 lbf/in. (700 N/m) width. Reinforced glass-fiber inner mat shall have a minimum breaking strength in the longitudinal direction of 13 lbf/in. (2.28 kN/m) width. In either case, the minimum breaking strength in the transverse direction shall be 4 lbf/in. (700 N/m) as determined by ANSUASTM D146, as modified in Sec. 5.3.14.2. 4.7.3.1.7 Pliability There shall be no cracking of the glass-fiber inner mat when bent over a YE; in. (3.2 mm) radius at 730F 2 4°F (23°C -c 2%), as determined by ANSUASTM D146, modified as in Sec. 5.3.14.3. 4.7.3.1.8 Porosity. When related to pressure difference across the sample, the glass-fiber inner mat shall have porosity of not less than 0.022 in. (0.6 mm) and not more than 0.076 in. (1.9 mm) of water at an average air velocity of 200 ft/min (61 m/ min), as determined by ASTM D737, modified as in Sec. 5.3.14.4. P. 32, Sec. 5.3.10, revise to read: 5.3.10 Glass-fiber outerwrap weight-loss-on-heating tests. P. 32, Sec. 5.3.12, revise t o read: 5.3.12 Breaking strength test for outerwrap. Test samples of the outerwrap taken from the inside of the roll shall be aged at 73°F 2 4°F (23°C r 2°C) for at least 2 h. Then, in accordance with ASTM D882, modified, cut 10 specimens 2 in. x 12 in. (51 mm x 305 mm), with the longer dimension along the roll. Cut another 10 specimens the same size with the longer dimension across the roll. The tensile testing machine shall have clamps that are wider than 2 in. (51 mm) and are attached to swivels that are free to move in any direction. Grip the specimen from each end, leaving a distance between the jaws of at least 6 in. (152 mm). Initiate the breaking of the load by causing the lower clamp of the machine to travel at a uniform speed of 12 in./min (305 mm/min). Disregard the reading of any specimen that breaks nearer than l/4 in. (6.4 mm) from either clamp, and test an additional specimen in its place. Report the average of the results of the 10 individual specimens cut along the roll as the longitudinal breaking strength, and the average of the results of the 10 individual tests on specimens cut across the roll as the transverse breaking strength. Readings should be to the nearest pound of force (N/m). P. 33, Sec. 5.3.14, revise to read: 5.3.14 Testing of glass-fiber inner mat. COPYRIGHT American Water Works Association Licensed by Information Handling Services COPYRIGHT American Water Works Association Licensed by Information Handling Services STD-AWWA C203-ENGL L777 m 0783350 05ClbL53 775 = P. 33, Sec. 5.3.14.1, revise to read: 5.3.14.1 Elmendorf tear-strength test. The glass-fiber inner mat shall have an Elmendorf tear strength in both the longitudinal direction and in the transverse direction of not less than 0.22 lb (100 g) in each case, as determined by TAPP1 T414. The test shall be conducted using an Elmendorf tear tester, Thwing-Albert Model 60-16, or equivalent, with a capacity of O t o 3.5 lb (O to 1,600 g). The instrument shall be anchored to a table and leveled. The pendulum shall be tested for zero by moving it to the left to the pendulum stop and releasing. Adjustments shall be made if the pointer does not read zero after the pendulum stop has been released. The friction of the apparatus and the condition of the knife shall be verified and adjusted, if required, as provided in ASTM D689. Tests shall be made at a temperature of 73°F k 4°F (23°C k 2°C) and a relative humidity of 40 to 60 percent. Ten specimens shall be cut from the glass-fiber inner mat using either a sample cutter or template, noting machine direction (MD) and machine direction plus cross direction (MD plus CD). Sample size shall be 3 in. l/16 in. (76 mm f 1.6 mm) wide by 2'/2-in. k '/i6 in. (63 mm f 1.6 mm) high. Initially, the test shall be performed using two plies. The number of plies may subsequently be varied as indicated in ASTM D689. The pendulum is moved to the left until the stop is engaged. After the specimen has been clamped into the apparatus so that the 2 l/2-in. (63.5-mm) slit will be in the vertical direction, the knife is depressed to make the slit, and the stop is depressed to release the pendulum. Record the number of plies, the reading of the pointer, and whether MD or MD plus CD tear. The entire procedure shall be repeated to obtain 10 individual readings, and the readings averaged. This average, divided by the number of plies tested, gives the Elmendorf tear strength. P. 34, Sec. 5.3.14.2, revise to read: 5.3.14.2 Breaking-strength test. Nonreinforced glass-fiber inner mat shall have a minimum breaking strength in the longitudinal direction of 4 lbfhn. (700 N/m) width. Reinforced glass-fiber inner mat shall have a minimum breaking strength in the longitudinal direction of 13 lbf/in. (2.28 kN/m) width. In either case, the minimum breaking strength in the transverse direction shall be 4 1bUin. (700 N/m) width, as determined by ANSVASTM D146, modified. Ten specimens, each 3 in. x 22 in. (76 mm x 559 mm), shall be cut with the longer dimension across the roll. In those instances where the wrapper width is less than 22 in. (559 mm), the specimen length shall be that of the wrapper length. Both ends of each specimen shall be impregnated with a protective shellac or methacrylate for a distance of 2'/2 in. (63.5 mm) and allowed to dv. All specimens shall be tested at 73°F f 4°F (23°C f 2°C) using a tension-testing machine of adequate capacity in which the clamps are attached to swivels that are free t o move in any direction. The clamps shall be 1 in. x 3 in. (25 mm x 76 mm) and shall be covered with masking tape. The specimen to be tested shall be gripped 2 in. (51 mm) from each end, leaving 18 in. (457 mm) between the clamps. This gauge length may have to be adjusted, depending on the glass-fiber inner mat width. However, the gauge length should be the maximum consistent with good clamping. The breaking of the load shall be increased by causing the lower clamps of the machine to travel at a uniform speed of 12 in./min (305 mm/min). The reading on any specimen that breaks nearer than '12 in. (13 mm) from either clamp shall be disregarded and an additional specimen shall be tested in its place. The average of the results of 10 individual tests on specimens cut along the roll shall be COPYRIGHT American Water Works Association Licensed by Information Handling Services COPYRIGHT American Water Works Association Licensed by Information Handling Services S T D - A W W A C203-ENGL L777 m 0783350 050b15L! B O L reported as the longitudinal breaking strength and the average of 10 individual tests on specimens cut across the roll reported as the transverse breaking strength. P. 34, Sec. 5.3.14.3, revise to read: 5.3.14.3 Pliability test. There shall be no cracking of the glass-fiber inner mat when it is bent over a 'hin. (3.2-mm) radius at 73°F * 4°F (23°C * 2'0, as determined by ANSUASTM D146, modified. Five specimens, 1 in. x 8 in. (25 mm x 203 mm), shall be cut with the long dimension parallel to the length of the roll, and then immersed in water having a temperature of 73°F rt 4°F (23°C k 2°C) for a period of 10 to 15 min. Each specimen shall be individually removed from the bath and bent over a Y4-in. (6.4 mm) mandrel through a 90 percent arc at a uniform speed in approximately 2 seconds. Each specimen shall then be examined for cracks and breaks. F? 34, Sec. 5.3.14.4, revise to read: 5.3.14.4 Porosity test. When related to pressure difference across the sample, the glass-fiber inner mat shall have porosity of not less than 0.022 in. (0.6 mm) and not more than 0.076 in. (1.9 mm) of water at an average air velocity of 200 ft/min (61 m/min), as determined by ASTM D737, modified. Five specimens, a t least 10 in. x 10 in. (254 mm x 254 mm), representative of the unsaturated glass-fiber inner mat t o be tested, shall be provided. Alternatively, five places on the unsaturated glass-fiber inner mat, separated as widely as possible, may be tested without cutting. The apparatus shall consist essentially of a suction fan for drawing air through a known area of unsaturated glass-fiber inner mat, a circular orifice over which the mat to be tested can be clamped, a means of measuring the pressure drop across the mat, and a means of measuring the volume of air flowing through the mat. The clamp shall effectively eliminate edge leakage. The apparatus shall be capable of testing unsaturated glass-fiber inner mat of different thicknesses and testing large pieces of glass-fiber inner mat without cutting. The instrument shall be calibrated directly with a precision instrument. All tests shall be made at 73°F f 4°F (23°C 2 2°C) and 50 percent * 2 percent relative humidity. The test specimen shall be mounted between the clamp and the circular orifice with sufficient tension t o draw the, unsaturated glass-fiber inner mat smooth. The test specimen shall not be distorted in its own plane. Conditioned air shall be drawn through the known area of the glass-fiber inner mat and through the calibrated flowmeter at the rate of 200 ft/min (61 &min). The pressure drop across the glass- fiber inner mat shall be recorded in inches (millimetres) of water. The average of the test results for the five test specimens or the five different test locations of the glass-fiber inner mat shall be reported as the porosity. COPYRIGHT American Water Works Association Licensed by Information Handling Services COPYRIGHT American Water Works Association Licensed by Information Handling Services American Water Works Association ANSVAWWA C203-97 (Revision of ANWAWWA C203-91) AWWA STANDARD FOR COAL-TAR PROTECTIVE COATINGS AND LININGS FOR STEEL WATER PIPELINES”-ENAMEL AND TAPE-HOT APPLIED Effective date: Feb. 1, 1998. First edition approved by AWWA Board of Directors Apr 25, 1940. This edition approved June 15,1997. Approved by American National Standards Institute Oct. 31, 1997. AMERICAN WATER WORKS ASSOCIATION 6666 West Quincy Avenue, Denver, Colorado 80235 COPYRIGHT American Water Works Association Licensed by Information Handling Services COPYRIGHT American Water Works Association Licensed by Information Handling Services ~ STD-AWWA C203-ENGL L777 U783350 0505bb2 5 T 5 = A W A 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. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satisfactory service. 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. 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 manufactur- ing, 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 publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 11 W. 42nd St., New York, NY 10036; (212) 642-4900. Copyright O 1998 by American Water Works Association Printed in USA 11 COPYRIGHT American Water Works Association Licensed by Information Handling Services COPYRIGHT American Water Works Association Licensed by Information Handling Services Committee Personnel The Steel Water Pipe Manufacturer's Technical Advisory Committee (SWPMTAC) Task Force for Development and Maintenance of AWWA C203, which developed this standard, had the following personnel at the time: William Roder, Chair F.D. Barnes, Tapecoat Company, Evanston, Ill. R.M. Nee, Polyguard Products Inc., Tulsa, Okla. Jack O'Brien, Tapecoat Company, Deerfield, Ill. J.P. Power, Power Marketing Group, Englewood, Colo. Don Roberts, Northwest Pipe Company, Portland, Ore. William Roder, Reilly Industries Inc., Indianapolis, Ind. John Schmidt, Tapecoat Company, Litchfield, Minn. H.R. Stoner, Consultant, North Plainfield, N.J. Keld Stovgaard, Phonix Contractors A/S, Vejen, Denmark J.A. Wise, Canus Industries Inc., Port Coquitlam, B.C. The Standards Committee on Steel Pipe, which reviewed and approved this standard, had the following personnel a t the time of approval: G.J. Tupac, Chair J.H. Bambei Jr., Vice-Chair Dennis Dechant, Secretary Consumer Members G.A. Andersen, New York City Bureau of Water Supply, Corona, Ergun Bakall, AKM Consulting Engineers, Irvine, Calif. J.H. Bambei Jr., Denver Water Department, Denver, Colo. J.L. Doane, Portland Water Bureau, Portland, Ore. R.V. Frisz, US Bureau of Reclamation, Denver, Colo. W.M. Kremkau, Washington Suburban Sanitary Commi