1、NSF International Standard / American National StandardNSF/ANSI 358-1 - 2017Polyethylene Pipe and Fittings for Water-Based Ground-Source “Geothermal“ Heat Pump Systems NSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider
2、of public health and safety-based risk management solutions while serving the interests of all stakeholders. This Standard is subject to revision. Contact NSF to confirm this revision is current. Users of this Standard may request clarifications and interpretations, or propose revisions by contactin
3、g: Chair, Joint Committee on Plastics c/o NSF International 789 North Dixboro Road, P.O. Box 130140 Ann Arbor, Michigan 48113-0140 USA Phone: (734) 769-8010 Telex: 753215 NSF INTL FAX: (734) 769-0109 E-mail: infonsf.org Web: http:/www.nsf.org i NSF International Standard/ American National Standard
4、for Plastics Polyethylene Pipe and Fittings for Water-Based Ground-Source “Geothermal” Heat Pump Systems Standard Developer NSF International NSF International Board of Directors Designated as an ANSI Standard January 2, 2017 American National Standards Institute NSF/ANSI 358-1 2017 ii Prepared by T
5、he NSF Joint Committee on Plastics Recommended for Adoption by The NSF Council of Public Health Consultants Adopted by NSF International July 2012 Revised August 2014 January 2017 Published by NSF International PO Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inqu
6、iries with regard to this Standard, please reference the designation “NSF/ANSI 358-1 2017”. Copyright 2017 NSF International Previous editions 2014, 2012 Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, inclu
7、ding photocopying and microfilm, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1 NSF, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any
8、 other party. The opinions and findings of NSF represent its professional judgment. NSF shall not be responsible to anyone for the use of or reliance upon this Standard by anyone. NSF shall not incur any obligation or liability for damages, including consequential damages, arising out of or in conne
9、ction with the use, interpretation of, or reliance upon this Standard. NSF Standards provide basic criteria to promote sanitation and protection of the public health. Provisions for mechanical and electrical safety have not been included in this Standard because governmental agencies or other nation
10、al standards-setting organizations provide safety requirements. Participation in NSF Standards development activities by regulatory agency representatives (federal, local, state) shall not constitute their agencys endorsement of NSF or any of its Standards. Preference is given to the use of performa
11、nce criteria measurable by examination or testing in NSF Standards development when such performance criteria may reasonably be used in lieu of design, materials, or construction criteria. The illustrations, if provided, are intended to assist in understanding their adjacent standard requirements. H
12、owever, the illustrations may not include all requirements for a specific product or unit, nor do they show the only method of fabricating such arrangements. Such partial drawings shall not be used to justify improper or incomplete design and construction. Unless otherwise referenced, the annexes ar
13、e not considered an integral part of NSF Standards. The annexes are provided as general guidelines to the manufacturer, regulatory agency, user, or certifying organization. 1 The information contained in this Disclaimer is not part of this American National Standard (ANS) and has not been processed
14、in accordance with ANSIs requirements for an ANS. Therefore, this Disclaimer may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. iv This page is intentionally left blank.v C
15、ontents 1 General . 1 1.1 Purpose 1 1.2 Scope 1 2 Normative References 1 3 Definitions . 2 4 Material Requirements . 4 4.1 Plastic Materials . 4 4.2 Materials . 4 4.3 Long-term strength of plastic pipe 4 4.4 Hydrostatic design 4 5 General Requirements . 4 5.1 Polyethylene Pipe 4 5.2 Polyethylene Fit
16、tings 5 5.3 Chemical Resistance . 5 6 Marking Requirements . 6 6.1 Pipe Marking 6 6.2 Fitting Marking . 6 6.3 Manufacturers Instructions 6 7 Quality Assurance. 6 7.1 General. 6 7.2 Start-up and qualification of molds 7 7.3 Calibration 7 7.4 Quality assurance records . 7 7.5 Production code identific
17、ation 7 7.6 Number of test specimens . 8 vi This page is intentionally left blank.vii Foreword2 Geothermal technology has been used in North America for decades and is experiencing tremendous interest. In 2009, the NSF Joint Committee on Plastics and RV Plumbing Components proposed to develop this S
18、tandard after a need was identified in the industry. Plastic piping system components are used in the construction of earth energy systems yet there is no North American standard addressing all relevant aspects of earth energy systems. It is the intent of this Standard to assist in a more consistent
19、 approval and mainstream code adoption of the geothermal piping systems technology. This Standard will be separated into four separate documents based on material types. NSF/ANSI 358-1 addresses products in polyethylene systems. This edition of NSF/ANSI 358-1 includes the following revisions: Issue
20、3 This issue updates 5.2 Polyethylene fittings. This Standard was developed by the NSF Joint Committee on Plastics using the consensus process described by the American National Standards Institute. Suggestions for improvement of this Standard are welcome. This Standard is maintained on a Continuous
21、 Maintenance schedule and can be opened for comment at any time. Comments should be sent to Chair, Joint Committee on Plastics at standardsnsf.org or, c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan, 48113-0140, USA. 2 The information contained in this Foreword is n
22、ot part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for
23、 conformance to the Standard. This page is intentionally left blank.1 2017 NSF NSF/ANSI 358-1 2017 NSF International Standard for Plastics Polyethylene Pipe and Fittings for Water-Based Ground-Source “Geothermal” Heat Pump Systems 1 General 1.1 Purpose This Standard establishes the minimum physical
24、and performance requirements for plastic piping system components. These criteria were established for the protection of property, public health and the environment. 1.2 Scope The physical and performance requirements in this Standard apply to plastic piping system components as well as non-plastic
25、components of the ground loop heat exchanger including, but not limited to, pipes and fittings used in water-based ground-source heat pump systems. This Standard is intended for ground loop heat exchangers with a maximum temperature and pressure of 140 F (60 C) at 100 psi. Water-based ground-source
26、heat pump systems commonly include the use of anti-freeze, heat transfer fluids or other chemical additives. This Standard does not cover refrigerant based ground loop heat exchangers such as direct expansion (DX) systems. This Standard does not cover hydronic heating or cooling systems within build
27、ings. 2 Normative references The following documents contain provisions that, through reference, constitute provisions of this NSF Standard. At the time this Standard was balloted, the editions listed below were valid. All documents are subject to revision, and parties are encouraged to investigate
28、the possibility of applying the recent editions of the documents indicated below. The most recent published edition of the document shall be used for undated references. ASTM D2290-12. Standard Test Method for Apparent Hoop Tensile Strength of Plastic or Reinforced Plastic Pipe by Split Disk Method3
29、 ASTM F1588-96(2011). Standard Test Method for Constant Tensile Load Joint Test (CTLJT3) ASTM D2683-10e1. Standard Specification for Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing3 ASTM D2737-12a. Standard Specification for Polyethylene (PE) Plastic Tu
30、bing3 ASTM D2837-11. Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe 3 American Society for Testing Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 . NSF 2017 NSF/ANSI 358-1 2017 2 Materials or Pressure Design Basis for Thermoplastic Pipe
31、Products3 ASTM D3035-12e1. Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter3 ASTM D3261-10a. Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing3 ASTM D3350-12e1. Standard S
32、pecification for Polyethylene Plastics Pipe and Fittings Materials3 ASTM D543-06. Standard Practices for Evaluating the Resistance of Plastics to Chemical Reagents3 ASTM D638. Test Method for Tensile Properties of Plastics3 ASTM F412-13. Terminology Relating to Plastic Piping Systems3 ASTM F714-13.
33、Standard Specification for Polyethylene (PE) Plastic Pipe (SDR-PR) Based on Outside Diameter3 ASTM F1055-13. Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene Pipe and Tubing3 ASTM F2620-12. Standard Practice
34、 for Heat Fusion Joining of Polyethylene Pipe and Fittings3 AWWA C901-08. Polyethylene (PE) Pressure Pipe and Tubing, in (13 mm) Through 3 in (76 mm), for Water Service Plumbing Fittings4 CSA B137.1-09. Polyethylene Pipe, Tubing, and Fittings for Cold Water Pressure Services5 National Institute of S
35、tandards and Technology (NIST)6 PPI TR-3 (2010) Policies and Procedures for Developing Hydrostatic Design Basis (HDB), Hydrostatic Design Stresses (HDS), Pressure Design Basis (PDB), Strength Design Basis (SDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe7
36、PPI TR-4 (2011) PPI Listing of Hydrostatic Design Basis (HDB), Hydrostatic Design Stress (HDS), Strength Design Basis (SDB), Pressure Design Basis (PDB) and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe7 3 Definitions Terms used in this Standard that have a speci
37、fic technical meaning are defined here. 3.1 compound: A mixture of polymers with other ingredients such as fillers, stabilizers, catalysts, processing aids, lubricants, modifiers, pigments, or curing agents. NOTE Compounds are considered materials; however, not all materials are considered compounds
38、. 4 American Water Works Association (AWWA), 6666 West Quincy Avenue, Denver, CO 80235 . 5 Canadian Standards Association (CSA), 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W 1R3 . 6 National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD 20899 7 Plastics Pipe I
39、nstitute, 105 Decker Court, Suite 825, Irving, Texas . NSF 2017 NSF/ANSI 358-1 2017 3 3.2 contamination: The presence of a substance not intentionally incorporated in a product. 3.3 critical dimensions: Dimensions of a product (e.g., pipes and fittings) that directly affect the fit and function, or
40、the capacity of making a sound joint, or both. 3.4 fitting: A piping component used to join, terminate, or provide changes of direction in a piping system. 3.5 ground-source heat pump system: A term used to describe a variety of mechanical systems that use the ground, groundwater, or surface water a
41、s a heat source or heat sink. Systems can be further described as ground-coupled, groundwater and surface water heat pump systems. 3.6 hydrostatic design basis (HDB): One of a series of established stress values specified in ASTM D2837 for a plastic compound, obtained by categorizing the long-term h
42、ydrostatic strength determined in accordance with ASTM D2837. 3.7 hydrostatic design stress (HDS): The estimated maximum tensile stress a material is capable of withstanding continuously with a high degree of certainty that failure of the pipe will not occur. This stress is circumferential when inte
43、rnal hydrostatic water pressure is applied. 3.8 joint: The location at which two pieces of pipe or a pipe and a fitting are connected together. Various joint types not defined in this Standard shall be defined by ASTM F412. 3.9 plastic pipe: A hollow cylinder of plastic, in which the wall thicknesse
44、s are usually small when compared to the diameter, and in which the inside and outside walls are essentially concentric. 3.10 plastic: A material that contains as an essential ingredient one or more organic polymeric substances of large molecular weight, is solid in its finished state, and, at some
45、stage in its manufacture or processing into finished articles, can be shaped by flow. 3.11 pressure rating: The estimated maximum water pressure at a specified temperature that a pipe is capable of withstanding continuously with a high degree of certainty that failure of the pipe will not occur. 3.1
46、2 quality assurance: A formal system for verifying that products conform to specific standards. Quality assurance is intended as an audit of quality control testing. 3.13 quality control: The methods used to ensure that a production process yields products in conformance with the appropriate specifi
47、cations established by the quality assurance program. 3.14 rework material: A material from a manufacturers own production that has been reground or pelletized for reuse by that same manufacturer. 3.15 steady-state: An operational condition of the manufacturing process that does not change with time
48、. 3.16 thermoplastic: noun A plastic that can be repeatedly softened by heating and hardened by cooling through a temperature range characteristic of the plastic, and in the softened state, can be shaped by flow through molding or extrusion. adjective Capable of being repeatedly softened by heating
49、and hardened by cooling through a temperature range characteristic of the plastic, and able in the softened state to be shaped by flow into articles by molding or extrusion. 3.17 virgin material: A material in the form of pellets, granules, powder, floc, or liquid that has not been subjected to use or processing other than that required for its initial manufacture. NSF 2017 NSF/ANSI 358-1 2017 4 4 Material requirements 4.1 Plastic materials Plastic piping system components and related materials shall be produced from virgin plastics or clean rew
