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    PPI MS-4-2007 Model Specification For Polyamide 11 (PA-11) Plastic Pipe Tubing and Fittings for Fuel Gas Distribution Systems《油气输送系统用聚酰胺(PA-11)塑料管 管道和配件的型号规格》.pdf

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    PPI MS-4-2007 Model Specification For Polyamide 11 (PA-11) Plastic Pipe Tubing and Fittings for Fuel Gas Distribution Systems《油气输送系统用聚酰胺(PA-11)塑料管 管道和配件的型号规格》.pdf

    1、 MS-4/2007 Model Specification For Polyamide 11 (PA-11) Plastic Pipe, Tubing and Fittings for Fuel Gas Distribution Systems 2 MODEL SPECIFICATION FOR POLYAMIDE-11 (PA-11) PLASTIC PIPE, TUBING AND FITTINGS FOR FUEL GAS DISTRIBUTION SYSTEMS FOREWORD The Plastics Pipe Institute (PPI) has prepared this

    2、model specification as a service to its members and the industry. It is offered for use as a starting point and guide in developing appropriate final specifications suited to a particular projects needs. This report has been prepared by PPI as a service of the industry. The information in this repor

    3、t is offered in good faith and believed to be accurate at the time of its preparation, but is offered without any warranty, expressed or implied, including WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Any reference to or testing of a particular proprietary product should not b

    4、e construed as an endorsement by PPI, which does not endorse the proprietary products or processes of any manufacturer. Industry members in fulfilling their own compliance responsibilities offer the information in this report for consideration. PPI assumes no responsibility for compliance with appli

    5、cable laws and regulations. PPI intends to revise this report from time to time, in response to comments and suggestions from users of the report. Please send suggestions of improvements to PPI. Information on other publications can be obtained by contacting PPI directly or visiting the web site. Th

    6、e Plastics Pipe Institute, Inc. http:/www.plasticpipe.org 3 MODEL SPECIFICATION FOR PA-11 PLASTIC PIPE, TUBING AND FITTINGS FOR FUEL GAS DISTRIBUTION SYSTEMS INTRODUCTION This Model Specification for PA-11 Plastic Pipe, Tubing and Fittings for Fuel Gas Distribution Systems has been developed by the

    7、Plastics Pipe Institute (PPI) to assist the utility user in developing his own specifications which will help to ensure that the products purchased will perform satisfactorily in the intended enduse. It is incumbent upon the utility user to have a working familiarity with the following regulations,

    8、standard specifications, and recommendations: A. US Department of Transportation Pipeline Safety Regulations, Code of Federal Regulations (CFR) Title 49, Part 192, “Transportation of Natural or Other Gases by Pipeline: Minimum Federal Safety Standards”. B. ASTM D 2513 - Standard Specification for Th

    9、ermoplastic Gas Pressure Pipe, Tubing and Fittings. C. ASTM D 4066 Classification System for Nylon Injection and Extrusion Materials (PA) D. ASTM D 6779 Standard Classification System for Polyamide Molding and Extrusion Materials (PA) E. ASTM F 1733 Standard Specification for Butt Heat Fusion Polyam

    10、ide (PA) Plastic Fitting for Polyamide(PA) Plastic Pipe and Tubing F. ASTM F 1973 Standard Specification for Factory Assembled Anodeless Risers and Transition Fittings in Polyethylene (PE) and Polyamide 11 (PA11) Fuel Gas Distribution Systems G. ASTM F 2145 Standard Specification for Polyamide 11 (P

    11、A 11) Mechanical Fittings for Use on Outside Diameter Controlled Polyamide 11 Pipe and Tubing H. ANSI Z 221.3 / NFPA 54 National Fuel Gas Code I. CSA-CAN B137.12-02 Polyamide Piping Systems for Gas Services J. NFPA 58 Liquefied Petroleum Gas Code K. PPI TR-3 - Policies and Procedures for Developing

    12、Hydrostatic Design Basis (HDB), Strength Design Basis (SDB), Pressure Design Basis (PDB) and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe. L. PPI TR-4 - PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis (SDB), Pressure Design Basis (PDB) and M

    13、inimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe. 4 In addition, it is recommended the user review the American Gas Association publication, AGA Plastic Pipe Manual for Gas Service. Although it is difficult to incorporate in a specification, one of the most important

    14、 considerations in purchasing quality materials for a PA-11 fuel gas distribution system is the selection of a quality vendor. Such a vendor will have an understanding of the necessary quality control tests and the capabilities to perform them, and will also be able to provide records showing that a

    15、 quality control/quality assurance program is in effect that utilize these testing facilities. Using both the appropriate Annex for In-Plant Quality Control of ASTM D 2513 and this document as guides the user or purchaser should evaluate an intended supplier through an on-site visit and inspection.

    16、Adequate records should be available for the users review to demonstrate that the suppliers production of gas piping products meets the requirements of the specification. In qualifying a supplier, the user should consider: A. A demonstrated commitment to the market as evidenced by facilities investm

    17、ent and products offered; A. A good reputation for product quality and service based on other user comments; B. Adequate in-plant inspection and quality control/quality assurance testing, either in the suppliers own facilities or in a qualified independent laboratory. Registration under a recognized

    18、 quality assurance program such as ISO 9000 is a means to ensure proper /quality control/quality assurance procedures are in place. C. Evidence that the supplier has a qualified joining procedure in accordance with the requirements of the US Department of Transportation Pipeline Safety Regulations (

    19、CFR) Title 49, Part 192, “Transportation of Natural or Other Gases by Pipeline: Minimum Federal Safety Standards”. D. The ability to provide sound technical support for its products. The user should ensure that, in addition to clearly defined material purchase specifications; the manufacturer has al

    20、so established procedures for qualification testing and acceptance testing of PA-11 pipe, tubing and fittings, and certification requirements for the materials purchased for use in their systems. The following model specification is furnished to assist the user of PA-11 gas pipe in the procurement o

    21、f materials meeting the minimum federal standards as well as some additional recommended requirements, such as those contained in ASTM D 2513. In the event local standards are more stringent, appropriate modifications should be made to this model specification. 5 MODEL SPECIFICATION FOR PA-11 PLASTI

    22、C PIPE, TUBING AND FITTINGS FOR FUEL GAS DISTRIBUTION SYSTEMS DISCUSSION I. General All PA-11 pipe, tubing and fittings furnished under this specification shall conform to all applicable provisions and requirements of the latest revision of the US Department of Transportation Pipeline Safety Regulat

    23、ions (CFR) Title 49, Part 192, “Transportation of Natural or Other Gases by Pipeline: Minimum Federal Safety Standards, and, by inclusion, all appropriate standards referenced therein. II. Materials PA-11 compounds utilized in the manufacture of products furnished under this specification shall have

    24、 a grade of PA32312, as defined in ASTM D 4066. In conformance with ASTM D 2513, they shall have a PPI recommended hydrostatic design basis (HDB) as shown in the below table for the indicated temperatures: PPI TR4 HDB Values for PA-11 Temperature HDB 73F (23C) 2500 psi 140F (60C) 1600 psi 180F (82C)

    25、 1250 psi Clean rework material of the same type and grade, generated from the manufacturers own pipe and fitting production, may be used by the same manufacturer as long as the pipe, tubing or fitting produced meet all the requirements of ASTM D 2513. III. Pipe and Tubing Pipe and Tubing furnished

    26、under this specification shall be manufactured using compounds complying with the requirements of Section II, above, and all appropriate requirements of Part 192 of the Minimum Federal Safety Standards. Dimensional characteristics (including outside diameter, wall thickness, toe-in, ovality and leng

    27、th) and performance characteristics (including chemical resistance, sustained pressure, elevated temperature service, burst pressure/apparent tensile strength, joining, squeeze-off and outdoor storage 6 stability) shall conform to the requirements of ASTM D 2513 including applicable annexes. Pipe an

    28、d Tubing may be supplied in either coils or straight lengths. IV. Fittings PA-11 fittings furnished under this specification shall be manufactured using compounds complying with the requirements of Section II, above and all appropriate requirements of Part 192 of the Minimum Federal Safety Standards

    29、. Butt fusion fittings shall comply with ASTM F 1733. PA-11 mechanical fittings for use on PA-11 piping shall comply with ASTM D 2145. Mechanical fittings produced from metallic or materials other than plastics listed in Section II shall be approved only after submission of appropriate test data and

    30、 service histories indicating their acceptability for the intended service. In addition, all mechanical fittings shall be categorized for pullout resistance as stated in ASTM D 2513 and identified as to the appropriate category. Plastic valves shall meet the requirements of ANSI Standard B16.40. In

    31、all cases, the specifications and requirements for the fittings supplied shall comply with the appropriate sections of Part 192 of the Minimum Federal Safety Standards or NFPA 58 LP Gas Code. V. Marking Pipe and tubing shall be marked in accordance with ASTM D 2513. Marking shall be legible and shal

    32、l remain legible under normal handling and installation practices. Indent marking may be utilized provided: (1) the marking does not reduce the wall thickness to less than the minimum value for the pipe or tubing, (2) it has been demonstrated that these marks have no effect on the long term strength

    33、 of the pipe or tubing and (3) (3) the marking will not provide leakage channels when approved elastomeric gasket compression fittings are used to make joints. Fusion fittings shall be marked on the body or hub. Marking shall be in accordance with ASTM D 2513 or the standard to which the fitting is

    34、manufactured. Mechanical fittings shall be marked in accordance with the fitting standard to which it is manufactured or Part 192 of the Minimum Federal Safety Standard Section 192.63. VI. Workmanship Pipe, tubing and fittings shall be homogeneous throughout and free of visible cracks, holes, foreig

    35、n inclusions, blisters, dents, or other injurious defects. The pipe, tubing, and fittings shall be as uniform as commercially practicable in color, opacity, density, and other physical properties. 7 VII. Quality Control Quality Control shall be in accordance with the requirements given in ASTM D 251

    36、3 including applicable annexes. VIII. Fusion Qualification The manufacturer of pipe, tubing and or fittings supplied under this specification shall establish and certify heat fusion procedures for the joining of the materials supplied in accordance with the applicable section of (CFR) Title 49, Part

    37、 192 “Transportation of Natural and or Other Gases by Pipeline: Minimum Federal Safety Standards” paragraph 192.283. Qualified fusion procedures, with appropriate supporting data, shall be furnished to the purchaser upon request. IX. Resolution of Conflicts The use of ASTM standard specification references without a year designation implies the most current applicable specification. In the event this specification conflicts with the specification referenced in (CFR) Title 49, Part 192, the requirements of (CSR) Title 49, Part 192 shall prevail.


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