1、105 Decker Court, Suite 825, Irving, TX 75062 P: 469-499-1044 F: 469-499-1063 www.plasticpipe.org MS-3/2009 HDPE (High Density Polyethylene) Pipe and Fittings Specification for Buried Potable Water 2 December 2009 HDPE (High Density Polyethylene) Pipe and Fittings Specification for Buried Potable Wa
2、ter SECTION 026XX HIGH DENSITY POLYETHYLENE PIPE AND FITTINGS 1.01 DESCRIPTION: PART 1 GENERAL The scope of this model specification is for municipal water pipelines which conform to AWWA standards. This guideline specification may be adopted in full or modified by the specifier to fit the project.
3、Options for the specifier are denoted by square brackets and italics. This model specification provides minimum requirements for HDPE pipe and fittings to be used in the design and construction of municipal pressure piping projects. A. Scope This section specifies high density polyethylene pipe (HDP
4、E) and fittings for water utility use as indicated on the Drawings, and as specified herein. Furnish, Install, and Test HDPE pipe as indicated and specified in this section, and as referred to in related sections, and the Drawings for Insert name of contract The primary installation method is burial
5、. The means and methods, including the testing for acceptance shall conform to all applicable standards as noted herein with the intention of providing a leak-free system to the owner. B. Special Instructions: Insert here special instructions with respect to the scope that are not obvious, or covere
6、d elsewhere 1.02 RELATED WORK A. The following sections are incorporated by reference, Reference the other sections of the contract that influence the HDPE- such as soil and site excavation, control of material at site payment schedule etc a. Section 01300: Submittals b. Section 01315: Coordination
7、and Meetings c. Section 01400 : Quality Control d. Section 01600: Materials and Equipment e. Section 022xx: Excavation, Backfill, Fill and Grading f. Section 025xx: Utility Relocation g. Section 26xx: Testing, Disinfection and Commissioning 1.03 REFERENCES A. To the extent referenced in this specifi
8、cation section, the standards and documents listed below are included, and made a part of this specification. B. In the event of a conflict, the requirements of this specification section prevail. 3 December 2009 C. Unless otherwise specified, references to documents shall mean the latest published
9、edition of the referenced document in effect at the bid date of the project. ANSI/AWWA www.awwa.org ANSI/AWWA C901-08 Polyethylene (PE) Pressure Pipe and Tubing, In. (13 mm) Through 3 In. (76 mm) for Water Service ANSI/AWWA C906-07 Polyethylene (PE) Pressure Pipe and Fittings, 4 In. (100 mm) Through
10、 63 In. (1,600 mm), for Water Distribution and Transmission ANSI/AWWA C651 Standard for Disinfecting Water Mains AWWA M55 Manual of Water Supply Practices, PE PipeDesign and Installation Plastics Pipe Institute, PPI www.plasticpipe.org PPI Handbook of Polyethylene Pipe 2009 (2nd PPI TR-33 Generic Bu
11、tt Fusion Joining Procedure for Polyethylene Gas Pipe Edition) PPI TR-34 Disinfection of Newly Constructed Polyethylene Water Mains PPI TR-41 Generic Saddle Fusion Joining Procedure for Polyethylene Gas Piping PPI TN-42 Recommended Minimum Training Guidelines for PE Pipe Butt Fusion Joining Operator
12、s for Municipal and Industrial Projects (2009) NSF www.nsf.org NSF / ANSI 61 Drinking Water System ComponentsHealth Effects ASTM www.astm.org ASTM F 714 Standard Specification for Polyethylene (PE) Plastic Pipe (SDR-PR) Based on Outside Diameter ASTM F905 Standard Practice for Qualification of Polye
13、thylene Saddle-Fused Joints ASTM F 1055 Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene Pipe and Tubing ASTM F 1290 Standard Practice for Electrofusion Joining Polyolefin Pipe and Fittings ASTM F 1412 Standard Specification for Polyole
14、fin Pipe and Fittings for Corrosive Waste Drainage Systems ASTM F1417 Standard Test Method for Installation Acceptance of Plastic Gravity Sewer Lines Using Low-Pressure Air 4 December 2009 ASTM F 2164 Standard Practice for Field Leak Testing of Polyethylene (PE) Pressure Piping Systems Using Hydrost
15、atic Pressure ASTM F2206 Standard Specification for Fabricated Fittings of Butt-Fused Polyethylene (PE) Plastic Pipe, Fittings, Sheet Stock, Plate Stock, or Block Stock ASTM D 2239 Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter ASTM D 2321 Sta
16、ndard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications ASTM F 2620 Standard Practice for Heat Fusion Joining of Polyethylene Pipe and Fittings ASTM D 2683 Standard Specification for Socket-Type Polyethylene Fittings for Outside Diameter-Contr
17、olled Polyethylene Pipe and Tubing ASTM D 2737 Standard Specification for Polyethylene (PE) Plastic Tubing ASTM D 2774 Standard Practice for Underground Installation of Thermoplastic Pressure Piping ASTM D 3261 Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyet
18、hylene (PE) Plastic Pipe and Tubing ASTM D 3350-08 Standard Specification for Polyethylene Plastics Pipe and Fittings Materials 1.04 SYSTEM DESIGN PARAMETERS A. The polyethylene system working pressure rating accommodates the normal operating pressure and the repetitive surges. The pressure rating a
19、pplies at 80oF or less. B. Per AWWA 901 and C906, the repetitive surge pressure allowance is one half the pressure class of the pipe, and the occasional surge over pressure allowance is equal to the pressure class of the pipe. Allowable Total Pressure during Recurring Surge conditions equals 1.5 tim
20、es the pipes pressure class. Allowable Total Pressure during Occasional Surge conditions equals 2.0 times the pipes pressure class. Table 1 gives the Pressure Class per AWWA C901, Pressure Rating and Allowable Total Pressure During Recurring and Occasional Surge for PE4710 pipe at 80oF or less. For
21、PE 3608, refer to Table 2. 5 December 2009 Table 1. Pressure Class per AWWA C901 for PE 4710 at 80oPipe Dimension Ratio (DR) F or less Pressure Class Pressure Rating Allowable Total Pressure During Recurring Surge Allowable Total Pressure During Occasional Surge DR 9 250 psi 250 psi 375 psi 500 psi
22、DR 11 200 psi 200 psi 300 psi 400 psi DR 14.3 150 psi 150 psi 225 psi 300 psi DR 17 125 psi 125 psi 185 psi 250 psi DR 21 100 psi 100 psi 150 psi 200 psi Table 2 gives the Pressure Class per AWWA C901 and C906 , Pressure Rating and Allowable Total Pressure During Recurring and Occasional Surge for P
23、E3608 pipe at 80oF or less. Table 2. Pressure Class per AWWA C901 and C906 for PE 3608 at 80oPipe Dimension Ratio (DR) F or less Pressure Class Pressure Rating Allowable Total Pressure During Recurring Surge Allowable Total Pressure During Occasional Surge DR 9 200 psi 200 psi 300 psi 400 psi DR 11
24、160 psi 160 psi 240 psi 320 psi DR 14.3 120 psi 120 psi 180 psi 240 psi DR 17 100 psi 100 psi 150 psi 200 psi DR 21 80 psi 80 psi 120 psi 160 psi 1.05 SUBMITTALS A. Quality Assurance / Control Submittals 1. Affirmation that product shipped meets or exceeds the standards set forth in this specificati
25、on. This shall be in the form of a written document from the manufacturer attesting to the manufacturing process meeting the standards. The specifier can also ask for various test results to be supplied that are done according to the standards 2. Manufacturers recommended fusion procedures for the p
26、roducts. 1.06 DELIVERY STORAGE HANDLING A. Handle the pipe in accordance with the PPI Handbook of Polyethylene Pipe (2ndEdition), Chapter 2 using approved strapping and equipment rated for the loads encountered. Do not use chains, wire rope, forklifts or other methods or equipment 6 December 2009 th
27、at may gouge or damage the pipe or endanger persons or property. Field storage is to be in compliance with AWWA Manual of Practice M55 Chapter 7. B. If any gouges, scrapes, or other damage to the pipe results in loss of 10% of the pipe wall thickness, cut out that section or do not use. A. Polyethyl
28、ene pipe shall be made from a HDPE material having a minimum material designation code of PE 4710 or PE 3608. The material shall meet the requirements of ASTM D 3350 and shall have a minimum cell classification of PE445474C for PE 4710 and PE345464C for PE 3608. In addition, the pipe shall be listed
29、 as meeting NSF-61. PART 2 A PRODUCTS FOR 3 INCH AND SMALLER PIPE PER AWWA C901 2A.01 PIPE B. The pipe shall meet the requirements of AWWA C901 C. HDPE pipe shall be rated for use at a pressure class of _ User specified psi. The specifier chooses the pressure class from Table 1 or Table 2 in Section
30、 1.04 above. The outside diameter of the pipe shall be based upon the IPS, CTS, or SIDR sizing system. User to specify the appropriate sizing system on the plans. D. Approved manufacturers are: The specifier is referred to the list of manufacturers as shown on the PPI website http:/plasticpipe.org/m
31、unicipal_pipe/mi_members.html 2A.02 FITTINGS A. Butt Fusion Fittings - Fittings shall be made of either PE4710 or PE 3608, with a minimum Cell Classification as noted in 2A.01A. Butt Fusion Fittings shall meet the requirements of ASTM D3261. Molded and fabricated fittings shall have a pressure ratin
32、g equal to the pipe unless otherwise specified in the plans. Markings for molded fittings shall comply with the requirements of ASTM D 3261. Fabricated fittings shall be marked in accordance with ASTM F 2206. Socket fittings shall meet ASTM D 2683. B. Electrofusion Fittings - Fittings shall be PE471
33、0 or PE 3608, with a minimum Cell Classification as noted in 2A.01A. Electrofusion Fittings shall have a manufacturing standard of ASTM F1055. Fittings shall have a pressure rating equal to the pipe unless otherwise specified on the plans. C. Flanges and Mechanical Joint Adapters (MJ Adapters) Flang
34、es and Mechanical Joint Adapters shall be PE4710 or PE 3608, with a minimum Cell Classification as noted in 2A.01A. Flanged and Mechanical Joint Adapters can be made to ASTM D 3261 or if machined, must meet the requirements of ASTM F 2206. Flanges and MJ Adapters shall have a pressure rating equal t
35、o the pipe unless otherwise specified on the plans. Markings for molded or machined 7 December 2009 flange adapters or MJ Adapters shall be per ASTM D 3261. Fabricated (including machined) flange adapters shall be per ASTM F 2206. Van-Stone style, metallic (including stainless steel), convoluted or
36、flat-plate, back-up rings and bolt materials shall follow the guidelines of Plastic Pipe Institute Technical Note # 38, and shall have the bolt-holes and bolt-circles conforming to one of these standards: ASME B-16.5 Class 150, ASME B-16.47 Series A Class 150, ASME B-16.1 Class 125, or AWWA C207 Cla
37、ss 150 Series B, D, or E. The back-up ring shall provide a long-term pressure rating equal to or greater than the pressure-class of the pipe with which the flange adapter assembly will be used, and such pressure rating shall be marked on the back-up ring. The back-up ring, bolts, and nuts shall be p
38、rotected from corrosion by a system such as paint, coal-tar epoxy, galvanization, polyether or polyester fusion bonded epoxy coatings, anodes, or cathodic protection, as specified by the project engineer. D. Service connections shall be electrofusion saddles with a brass or stainless steel threaded
39、outlet, electrofusion saddles, sidewall fusion branch saddles, tapping tees, or mechanical saddles. For electrofusion saddles with threaded outlet the size of the outlet shall be one inch IPS unless a larger size is shown on the plans. Electrofusion saddles shall be made from materials required in p
40、art 2A.02 B. Electrofusion Fittings. For sidewall fusion saddles, the size of the saddle shall be as indicated on the plans. The saddle can be made in accordance to ASTM D 3261 or ASTM F 2206. After installation, approximately ” of the PE pipe shall be visible beyond the saddle to confirm that prope
41、r surface preparation occurred. Saddle faces that do not provided inch of area beyond the saddle are not acceptable. Tapping tees shall be made to ASTM D3261 or D2683. Mechanical strap-on saddles can only be used where there use on PE pipe is approved by the mechanical saddle manufacturer. The body
42、of the saddle shall be stainless steel, epoxy coated cast iron or brass. The gasket material and design must be acceptable for PE pipe. The outlet shall be threaded for one inch IPS unless a larger size is shown on the plans. Mechanical strap-on saddles will be installed per the manufacturers instru
43、ctions. 2A.03 PIPE AND FITTING IDENTIFICATION A. The pipe shall be marked in accordance with the standards to which it is manufactured. or alternative as above B. Color identification by the use of stripes on pipe to identify pipe service shall be optional. If used, stripes or colored exterior pipe
44、product shall be blue for potable water. Optional 8 December 2009 C. Tracing wire shall be placed parallel and above, but separate from the pipe and shall be 10 AWG or engineer approved equal. The specifier can change this to the preferred material or method, all pipes should have a methodology to b
45、e locatable D. Marking tape shall be approved by the engineer and placed between 6 and 12 inches above the crown of pipe. Optional A. Polyethylene pipe shall be made from HDPE material having a material designation code of PE3608 or higher. The material shall meet the requirements of ASTM D 3350 and
46、 shall have a minimum cell classification of PE345464C. In addition, the material shall be listed as meeting NSF-61. PART 2 B PRODUCTS FOR 4 INCH AND LARGER PIPE PER AWWA C906 2B.01 PIPE B. The pipe and fittings shall meet the requirements of AWWA C906. C. HDPE pipe shall be rated for use at a press
47、ure class of _ User specified psi. The specifier chooses the pressure class from Table 2 in Section 1.04 above. The outside diameter of the pipe shall be based upon the IPS or DIPS sizing system. User to specify the appropriate sizing system on the plans. D. Approved manufacturers are: The specifier
48、 is referred to the list of manufacturers as shown on the PPI website http:/plasticpipe.org/municipal_pipe/mi_members.html 2B.02 FITTINGS A. Butt Fusion Fittings - Fittings shall be made of HDPE material with a minimum material designation code of PE3608 and with a minimum Cell Classification as noted in 2B.01A. Butt Fusion Fittings shall meet the requirements of ASTM D3261. Molded and fabricated fittings shall have a pressure rating equal to the pipe unless otherwise specified on the plans. All fittings shall meet the requirements of AWWA C906. Markings fo
